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  1. andler
  2. [ 635.284254] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3. [ 635.284256] Call Trace:
  4. [ 635.284260] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5. [ 635.284263] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6. [ 635.284271] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  7. [ 635.284282] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  8. [ 635.284290] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  9. [ 635.284297] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  10. [ 635.284304] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  11. [ 635.284308] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  12. [ 635.284316] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  13. [ 635.284327] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  14. [ 635.284337] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  15. [ 635.284341] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  16. [ 635.284351] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  17. [ 635.284362] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  18. [ 635.284366] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  19. [ 635.284369] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  20. [ 635.284378] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  21. [ 635.284387] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  22. [ 635.284397] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  23. [ 635.284406] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  24. [ 635.284409] [<ffffffff810523e6>] kthread+0x96/0xa0
  25. [ 635.284413] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  26. [ 635.284416] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  27. [ 635.284418] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  28. [ 635.284420] ---[ end trace 15b8c8d16278c157 ]---
  29. [ 635.288368] ------------[ cut here ]------------
  30. [ 635.288378] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  31. [ 635.288380] Hardware name: X8ST3
  32. [ 635.288381] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  33. [ 635.288399] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  34. [ 635.288401] Call Trace:
  35. [ 635.288406] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  36. [ 635.288409] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  37. [ 635.288417] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  38. [ 635.288428] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  39. [ 635.288435] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  40. [ 635.288442] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  41. [ 635.288449] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  42. [ 635.288453] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  43. [ 635.288462] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  44. [ 635.288472] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  45. [ 635.288483] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  46. [ 635.288486] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  47. [ 635.288497] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  48. [ 635.288507] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  49. [ 635.288511] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  50. [ 635.288514] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  51. [ 635.288524] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  52. [ 635.288533] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  53. [ 635.288543] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  54. [ 635.288552] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  55. [ 635.288555] [<ffffffff810523e6>] kthread+0x96/0xa0
  56. [ 635.288558] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  57. [ 635.288562] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  58. [ 635.288564] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  59. [ 635.288566] ---[ end trace 15b8c8d16278c158 ]---
  60. [ 635.292510] ------------[ cut here ]------------
  61. [ 635.292520] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  62. [ 635.292523] Hardware name: X8ST3
  63. [ 635.292524] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  64. [ 635.292541] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  65. [ 635.292543] Call Trace:
  66. [ 635.292548] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  67. [ 635.292551] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  68. [ 635.292559] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  69. [ 635.292570] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  70. [ 635.292578] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  71. [ 635.292585] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  72. [ 635.292592] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  73. [ 635.292596] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  74. [ 635.292604] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  75. [ 635.292615] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  76. [ 635.292625] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  77. [ 635.292629] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  78. [ 635.292639] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  79. [ 635.292650] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  80. [ 635.292654] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  81. [ 635.292657] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  82. [ 635.292666] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  83. [ 635.292676] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  84. [ 635.292685] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  85. [ 635.292695] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  86. [ 635.292698] [<ffffffff810523e6>] kthread+0x96/0xa0
  87. [ 635.292701] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  88. [ 635.292704] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  89. [ 635.292707] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  90. [ 635.292709] ---[ end trace 15b8c8d16278c159 ]---
  91. [ 635.296824] ------------[ cut here ]------------
  92. [ 635.296834] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  93. [ 635.296836] Hardware name: X8ST3
  94. [ 635.296838] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  95. [ 635.296855] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  96. [ 635.296857] Call Trace:
  97. [ 635.296861] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  98. [ 635.296865] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  99. [ 635.296873] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  100. [ 635.296883] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  101. [ 635.296891] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  102. [ 635.296954] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  103. [ 635.296961] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  104. [ 635.296967] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  105. [ 635.296978] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  106. [ 635.296990] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  107. [ 635.297003] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  108. [ 635.297008] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  109. [ 635.297021] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  110. [ 635.297033] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  111. [ 635.297039] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  112. [ 635.297044] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  113. [ 635.297055] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  114. [ 635.297067] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  115. [ 635.297078] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  116. [ 635.297089] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  117. [ 635.297094] [<ffffffff810523e6>] kthread+0x96/0xa0
  118. [ 635.297099] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  119. [ 635.297104] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  120. [ 635.297108] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  121. [ 635.297112] ---[ end trace 15b8c8d16278c15a ]---
  122. [ 635.301509] ------------[ cut here ]------------
  123. [ 635.301519] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  124. [ 635.301522] Hardware name: X8ST3
  125. [ 635.301523] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  126. [ 635.301540] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  127. [ 635.301542] Call Trace:
  128. [ 635.301547] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  129. [ 635.301550] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  130. [ 635.301558] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  131. [ 635.301568] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  132. [ 635.301576] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  133. [ 635.301583] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  134. [ 635.301590] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  135. [ 635.301594] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  136. [ 635.301602] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  137. [ 635.301612] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  138. [ 635.301623] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  139. [ 635.301626] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  140. [ 635.301637] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  141. [ 635.301647] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  142. [ 635.301651] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  143. [ 635.301654] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  144. [ 635.301663] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  145. [ 635.301673] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  146. [ 635.301682] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  147. [ 635.301691] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  148. [ 635.301694] [<ffffffff810523e6>] kthread+0x96/0xa0
  149. [ 635.301698] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  150. [ 635.301701] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  151. [ 635.301703] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  152. [ 635.301705] ---[ end trace 15b8c8d16278c15b ]---
  153. [ 635.305869] ------------[ cut here ]------------
  154. [ 635.305879] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  155. [ 635.305881] Hardware name: X8ST3
  156. [ 635.305882] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  157. [ 635.305962] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  158. [ 635.305966] Call Trace:
  159. [ 635.305972] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  160. [ 635.305977] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  161. [ 635.305987] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  162. [ 635.306000] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  163. [ 635.306009] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  164. [ 635.306018] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  165. [ 635.306027] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  166. [ 635.306033] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  167. [ 635.306044] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  168. [ 635.306056] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  169. [ 635.306069] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  170. [ 635.306074] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  171. [ 635.306087] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  172. [ 635.306099] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  173. [ 635.306105] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  174. [ 635.306111] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  175. [ 635.306122] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  176. [ 635.306133] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  177. [ 635.306145] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  178. [ 635.306156] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  179. [ 635.306161] [<ffffffff810523e6>] kthread+0x96/0xa0
  180. [ 635.306166] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  181. [ 635.306171] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  182. [ 635.306176] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  183. [ 635.306179] ---[ end trace 15b8c8d16278c15c ]---
  184. [ 635.310925] ------------[ cut here ]------------
  185. [ 635.310935] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  186. [ 635.310938] Hardware name: X8ST3
  187. [ 635.310939] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  188. [ 635.310958] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  189. [ 635.310960] Call Trace:
  190. [ 635.310965] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  191. [ 635.310968] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  192. [ 635.310977] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  193. [ 635.310989] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  194. [ 635.310997] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  195. [ 635.311004] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  196. [ 635.311012] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  197. [ 635.311016] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  198. [ 635.311025] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  199. [ 635.311037] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  200. [ 635.311048] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  201. [ 635.311052] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  202. [ 635.311063] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  203. [ 635.311074] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  204. [ 635.311078] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  205. [ 635.311082] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  206. [ 635.311092] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  207. [ 635.311102] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  208. [ 635.311112] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  209. [ 635.311122] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  210. [ 635.311125] [<ffffffff810523e6>] kthread+0x96/0xa0
  211. [ 635.311129] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  212. [ 635.311132] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  213. [ 635.311135] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  214. [ 635.311137] ---[ end trace 15b8c8d16278c15d ]---
  215. [ 635.315570] ------------[ cut here ]------------
  216. [ 635.315581] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  217. [ 635.315583] Hardware name: X8ST3
  218. [ 635.315585] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  219. [ 635.315604] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  220. [ 635.315606] Call Trace:
  221. [ 635.315611] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  222. [ 635.315614] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  223. [ 635.315623] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  224. [ 635.315634] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  225. [ 635.315642] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  226. [ 635.315650] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  227. [ 635.315657] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  228. [ 635.315662] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  229. [ 635.315671] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  230. [ 635.315682] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  231. [ 635.315693] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  232. [ 635.315697] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  233. [ 635.315709] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  234. [ 635.315720] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  235. [ 635.315724] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  236. [ 635.315727] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  237. [ 635.315737] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  238. [ 635.315747] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  239. [ 635.315758] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  240. [ 635.315768] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  241. [ 635.315771] [<ffffffff810523e6>] kthread+0x96/0xa0
  242. [ 635.315774] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  243. [ 635.315778] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  244. [ 635.315781] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  245. [ 635.315783] ---[ end trace 15b8c8d16278c15e ]---
  246. [ 635.320570] ------------[ cut here ]------------
  247. [ 635.320581] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  248. [ 635.320583] Hardware name: X8ST3
  249. [ 635.320585] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  250. [ 635.320603] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  251. [ 635.320605] Call Trace:
  252. [ 635.320610] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  253. [ 635.320614] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  254. [ 635.320622] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  255. [ 635.320634] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  256. [ 635.320642] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  257. [ 635.320649] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  258. [ 635.320657] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  259. [ 635.320661] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  260. [ 635.320670] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  261. [ 635.320682] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  262. [ 635.320693] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  263. [ 635.320697] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  264. [ 635.320708] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  265. [ 635.320719] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  266. [ 635.320723] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  267. [ 635.320727] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  268. [ 635.320737] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  269. [ 635.320747] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  270. [ 635.320757] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  271. [ 635.320767] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  272. [ 635.320770] [<ffffffff810523e6>] kthread+0x96/0xa0
  273. [ 635.320774] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  274. [ 635.320777] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  275. [ 635.320780] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  276. [ 635.320782] ---[ end trace 15b8c8d16278c15f ]---
  277. [ 635.324919] ------------[ cut here ]------------
  278. [ 635.324930] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  279. [ 635.324933] Hardware name: X8ST3
  280. [ 635.324934] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  281. [ 635.324953] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  282. [ 635.324955] Call Trace:
  283. [ 635.324959] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  284. [ 635.324963] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  285. [ 635.324972] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  286. [ 635.324983] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  287. [ 635.324991] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  288. [ 635.324998] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  289. [ 635.325006] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  290. [ 635.325010] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  291. [ 635.325020] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  292. [ 635.325031] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  293. [ 635.325042] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  294. [ 635.325046] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  295. [ 635.325057] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  296. [ 635.325068] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  297. [ 635.325072] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  298. [ 635.325076] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  299. [ 635.325086] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  300. [ 635.325095] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  301. [ 635.325106] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  302. [ 635.325116] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  303. [ 635.325119] [<ffffffff810523e6>] kthread+0x96/0xa0
  304. [ 635.325122] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  305. [ 635.325126] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  306. [ 635.325129] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  307. [ 635.325131] ---[ end trace 15b8c8d16278c160 ]---
  308. [ 635.329398] ------------[ cut here ]------------
  309. [ 635.329409] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  310. [ 635.329412] Hardware name: X8ST3
  311. [ 635.329413] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  312. [ 635.329432] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  313. [ 635.329434] Call Trace:
  314. [ 635.329439] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  315. [ 635.329442] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  316. [ 635.329451] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  317. [ 635.329463] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  318. [ 635.329471] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  319. [ 635.329478] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  320. [ 635.329486] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  321. [ 635.329490] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  322. [ 635.329499] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  323. [ 635.329510] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  324. [ 635.329522] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  325. [ 635.329526] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  326. [ 635.329537] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  327. [ 635.329548] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  328. [ 635.329552] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  329. [ 635.329556] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  330. [ 635.329566] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  331. [ 635.329576] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  332. [ 635.329586] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  333. [ 635.329596] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  334. [ 635.329599] [<ffffffff810523e6>] kthread+0x96/0xa0
  335. [ 635.329602] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  336. [ 635.329606] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  337. [ 635.329609] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  338. [ 635.329611] ---[ end trace 15b8c8d16278c161 ]---
  339. [ 635.333943] ------------[ cut here ]------------
  340. [ 635.333954] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  341. [ 635.333956] Hardware name: X8ST3
  342. [ 635.333958] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  343. [ 635.333977] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  344. [ 635.333979] Call Trace:
  345. [ 635.333983] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  346. [ 635.333987] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  347. [ 635.333996] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  348. [ 635.334007] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  349. [ 635.334015] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  350. [ 635.334023] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  351. [ 635.334030] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  352. [ 635.334035] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  353. [ 635.334044] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  354. [ 635.334055] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  355. [ 635.334066] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  356. [ 635.334070] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  357. [ 635.334081] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  358. [ 635.334092] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  359. [ 635.334097] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  360. [ 635.334100] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  361. [ 635.334110] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  362. [ 635.334120] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  363. [ 635.334130] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  364. [ 635.334140] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  365. [ 635.334144] [<ffffffff810523e6>] kthread+0x96/0xa0
  366. [ 635.334147] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  367. [ 635.334150] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  368. [ 635.334153] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  369. [ 635.334156] ---[ end trace 15b8c8d16278c162 ]---
  370. [ 635.338788] ------------[ cut here ]------------
  371. [ 635.338799] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  372. [ 635.338801] Hardware name: X8ST3
  373. [ 635.338803] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  374. [ 635.338821] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  375. [ 635.338824] Call Trace:
  376. [ 635.338828] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  377. [ 635.338832] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  378. [ 635.338841] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  379. [ 635.338852] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  380. [ 635.338860] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  381. [ 635.338868] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  382. [ 635.338875] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  383. [ 635.338880] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  384. [ 635.338889] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  385. [ 635.338969] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  386. [ 635.338982] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  387. [ 635.338988] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  388. [ 635.339001] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  389. [ 635.339014] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  390. [ 635.339020] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  391. [ 635.339025] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  392. [ 635.339037] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  393. [ 635.339049] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  394. [ 635.339061] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  395. [ 635.339073] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  396. [ 635.339078] [<ffffffff810523e6>] kthread+0x96/0xa0
  397. [ 635.339083] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  398. [ 635.339089] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  399. [ 635.339093] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  400. [ 635.339097] ---[ end trace 15b8c8d16278c163 ]---
  401. [ 635.343795] ------------[ cut here ]------------
  402. [ 635.343806] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  403. [ 635.343808] Hardware name: X8ST3
  404. [ 635.343810] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  405. [ 635.343828] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  406. [ 635.343830] Call Trace:
  407. [ 635.343835] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  408. [ 635.343839] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  409. [ 635.343847] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  410. [ 635.343859] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  411. [ 635.343867] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  412. [ 635.343874] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  413. [ 635.343881] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  414. [ 635.343886] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  415. [ 635.343895] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  416. [ 635.343964] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  417. [ 635.343977] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  418. [ 635.343984] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  419. [ 635.343997] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  420. [ 635.344010] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  421. [ 635.344016] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  422. [ 635.344021] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  423. [ 635.344033] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  424. [ 635.344044] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  425. [ 635.344056] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  426. [ 635.344068] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  427. [ 635.344073] [<ffffffff810523e6>] kthread+0x96/0xa0
  428. [ 635.344079] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  429. [ 635.344084] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  430. [ 635.344088] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  431. [ 635.344092] ---[ end trace 15b8c8d16278c164 ]---
  432. [ 635.348861] ------------[ cut here ]------------
  433. [ 635.348872] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  434. [ 635.348874] Hardware name: X8ST3
  435. [ 635.348875] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  436. [ 635.348958] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  437. [ 635.348961] Call Trace:
  438. [ 635.348965] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  439. [ 635.348971] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  440. [ 635.348981] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  441. [ 635.348994] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  442. [ 635.349004] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  443. [ 635.349014] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  444. [ 635.349023] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  445. [ 635.349029] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  446. [ 635.349040] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  447. [ 635.349053] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  448. [ 635.349066] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  449. [ 635.349071] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  450. [ 635.349085] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  451. [ 635.349098] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  452. [ 635.349104] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  453. [ 635.349109] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  454. [ 635.349120] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  455. [ 635.349132] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  456. [ 635.349144] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  457. [ 635.349155] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  458. [ 635.349161] [<ffffffff810523e6>] kthread+0x96/0xa0
  459. [ 635.349166] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  460. [ 635.349171] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  461. [ 635.349175] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  462. [ 635.349179] ---[ end trace 15b8c8d16278c165 ]---
  463. [ 635.353375] ------------[ cut here ]------------
  464. [ 635.353386] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  465. [ 635.353389] Hardware name: X8ST3
  466. [ 635.353390] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  467. [ 635.353409] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  468. [ 635.353411] Call Trace:
  469. [ 635.353415] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  470. [ 635.353419] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  471. [ 635.353428] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  472. [ 635.353439] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  473. [ 635.353447] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  474. [ 635.353454] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  475. [ 635.353462] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  476. [ 635.353466] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  477. [ 635.353475] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  478. [ 635.353486] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  479. [ 635.353497] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  480. [ 635.353501] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  481. [ 635.353513] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  482. [ 635.353523] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  483. [ 635.353528] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  484. [ 635.353531] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  485. [ 635.353541] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  486. [ 635.353551] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  487. [ 635.353561] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  488. [ 635.353571] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  489. [ 635.353574] [<ffffffff810523e6>] kthread+0x96/0xa0
  490. [ 635.353577] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  491. [ 635.353581] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  492. [ 635.353584] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  493. [ 635.353586] ---[ end trace 15b8c8d16278c166 ]---
  494. [ 635.358388] ------------[ cut here ]------------
  495. [ 635.358399] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  496. [ 635.358401] Hardware name: X8ST3
  497. [ 635.358402] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  498. [ 635.358421] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  499. [ 635.358423] Call Trace:
  500. [ 635.358428] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  501. [ 635.358431] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  502. [ 635.358440] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  503. [ 635.358451] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  504. [ 635.358459] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  505. [ 635.358466] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  506. [ 635.358474] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  507. [ 635.358478] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  508. [ 635.358487] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  509. [ 635.358498] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  510. [ 635.358509] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  511. [ 635.358513] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  512. [ 635.358525] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  513. [ 635.358535] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  514. [ 635.358540] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  515. [ 635.358543] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  516. [ 635.358553] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  517. [ 635.358563] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  518. [ 635.358573] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  519. [ 635.358583] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  520. [ 635.358586] [<ffffffff810523e6>] kthread+0x96/0xa0
  521. [ 635.358590] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  522. [ 635.358593] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  523. [ 635.358596] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  524. [ 635.358598] ---[ end trace 15b8c8d16278c167 ]---
  525. [ 635.363450] ------------[ cut here ]------------
  526. [ 635.363460] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  527. [ 635.363463] Hardware name: X8ST3
  528. [ 635.363464] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  529. [ 635.363483] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  530. [ 635.363485] Call Trace:
  531. [ 635.363490] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  532. [ 635.363494] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  533. [ 635.363502] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  534. [ 635.363513] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  535. [ 635.363522] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  536. [ 635.363529] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  537. [ 635.363536] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  538. [ 635.363541] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  539. [ 635.363550] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  540. [ 635.363561] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  541. [ 635.363572] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  542. [ 635.363576] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  543. [ 635.363587] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  544. [ 635.363598] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  545. [ 635.363602] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  546. [ 635.363606] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  547. [ 635.363615] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  548. [ 635.363625] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  549. [ 635.363635] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  550. [ 635.363645] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  551. [ 635.363649] [<ffffffff810523e6>] kthread+0x96/0xa0
  552. [ 635.363652] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  553. [ 635.363655] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  554. [ 635.363658] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  555. [ 635.363660] ---[ end trace 15b8c8d16278c168 ]---
  556. [ 635.367728] ------------[ cut here ]------------
  557. [ 635.367738] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  558. [ 635.367741] Hardware name: X8ST3
  559. [ 635.367742] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  560. [ 635.367761] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  561. [ 635.367763] Call Trace:
  562. [ 635.367768] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  563. [ 635.367771] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  564. [ 635.367780] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  565. [ 635.367791] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  566. [ 635.367800] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  567. [ 635.367807] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  568. [ 635.367815] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  569. [ 635.367819] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  570. [ 635.367828] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  571. [ 635.367839] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  572. [ 635.367850] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  573. [ 635.367854] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  574. [ 635.367866] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  575. [ 635.367877] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  576. [ 635.367881] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  577. [ 635.367884] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  578. [ 635.367894] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  579. [ 635.367977] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  580. [ 635.367989] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  581. [ 635.368001] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  582. [ 635.368006] [<ffffffff810523e6>] kthread+0x96/0xa0
  583. [ 635.368011] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  584. [ 635.368016] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  585. [ 635.368020] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  586. [ 635.368024] ---[ end trace 15b8c8d16278c169 ]---
  587. [ 635.371798] ------------[ cut here ]------------
  588. [ 635.371809] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  589. [ 635.371811] Hardware name: X8ST3
  590. [ 635.371812] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  591. [ 635.371831] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  592. [ 635.371833] Call Trace:
  593. [ 635.371838] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  594. [ 635.371842] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  595. [ 635.371850] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  596. [ 635.371861] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  597. [ 635.371870] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  598. [ 635.371877] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  599. [ 635.371885] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  600. [ 635.371889] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  601. [ 635.371974] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  602. [ 635.371988] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  603. [ 635.372001] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  604. [ 635.372007] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  605. [ 635.372021] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  606. [ 635.372033] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  607. [ 635.372040] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  608. [ 635.372045] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  609. [ 635.372057] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  610. [ 635.372069] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  611. [ 635.372081] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  612. [ 635.372093] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  613. [ 635.372098] [<ffffffff810523e6>] kthread+0x96/0xa0
  614. [ 635.372103] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  615. [ 635.372108] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  616. [ 635.372113] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  617. [ 635.372116] ---[ end trace 15b8c8d16278c16a ]---
  618. [ 635.375967] ------------[ cut here ]------------
  619. [ 635.375978] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  620. [ 635.375980] Hardware name: X8ST3
  621. [ 635.375981] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  622. [ 635.376000] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  623. [ 635.376002] Call Trace:
  624. [ 635.376007] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  625. [ 635.376011] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  626. [ 635.376019] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  627. [ 635.376030] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  628. [ 635.376039] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  629. [ 635.376046] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  630. [ 635.376054] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  631. [ 635.376058] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  632. [ 635.376067] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  633. [ 635.376078] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  634. [ 635.376089] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  635. [ 635.376093] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  636. [ 635.376105] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  637. [ 635.376115] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  638. [ 635.376119] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  639. [ 635.376123] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  640. [ 635.376133] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  641. [ 635.376143] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  642. [ 635.376153] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  643. [ 635.376163] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  644. [ 635.376166] [<ffffffff810523e6>] kthread+0x96/0xa0
  645. [ 635.376170] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  646. [ 635.376173] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  647. [ 635.376176] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  648. [ 635.376178] ---[ end trace 15b8c8d16278c16b ]---
  649. [ 635.380100] ------------[ cut here ]------------
  650. [ 635.380110] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  651. [ 635.380112] Hardware name: X8ST3
  652. [ 635.380113] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  653. [ 635.380129] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  654. [ 635.380132] Call Trace:
  655. [ 635.380136] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  656. [ 635.380139] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  657. [ 635.380146] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  658. [ 635.380156] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  659. [ 635.380163] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  660. [ 635.380170] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  661. [ 635.380176] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  662. [ 635.380180] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  663. [ 635.380188] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  664. [ 635.380198] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  665. [ 635.380207] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  666. [ 635.380211] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  667. [ 635.380221] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  668. [ 635.380230] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  669. [ 635.380234] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  670. [ 635.380237] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  671. [ 635.380246] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  672. [ 635.380254] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  673. [ 635.380263] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  674. [ 635.380272] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  675. [ 635.380275] [<ffffffff810523e6>] kthread+0x96/0xa0
  676. [ 635.380278] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  677. [ 635.380281] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  678. [ 635.380283] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  679. [ 635.380285] ---[ end trace 15b8c8d16278c16c ]---
  680. [ 635.384514] ------------[ cut here ]------------
  681. [ 635.384524] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  682. [ 635.384526] Hardware name: X8ST3
  683. [ 635.384527] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  684. [ 635.384544] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  685. [ 635.384546] Call Trace:
  686. [ 635.384550] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  687. [ 635.384553] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  688. [ 635.384560] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  689. [ 635.384570] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  690. [ 635.384577] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  691. [ 635.384584] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  692. [ 635.384590] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  693. [ 635.384594] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  694. [ 635.384602] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  695. [ 635.384612] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  696. [ 635.384621] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  697. [ 635.384625] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  698. [ 635.384635] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  699. [ 635.384644] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  700. [ 635.384648] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  701. [ 635.384651] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  702. [ 635.384659] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  703. [ 635.384668] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  704. [ 635.384677] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  705. [ 635.384686] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  706. [ 635.384688] [<ffffffff810523e6>] kthread+0x96/0xa0
  707. [ 635.384691] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  708. [ 635.384694] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  709. [ 635.384697] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  710. [ 635.384699] ---[ end trace 15b8c8d16278c16d ]---
  711. [ 635.389416] ------------[ cut here ]------------
  712. [ 635.389426] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  713. [ 635.389428] Hardware name: X8ST3
  714. [ 635.389429] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  715. [ 635.389446] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  716. [ 635.389448] Call Trace:
  717. [ 635.389452] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  718. [ 635.389455] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  719. [ 635.389463] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  720. [ 635.389473] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  721. [ 635.389480] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  722. [ 635.389486] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  723. [ 635.389493] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  724. [ 635.389497] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  725. [ 635.389505] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  726. [ 635.389515] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  727. [ 635.389524] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  728. [ 635.389528] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  729. [ 635.389538] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  730. [ 635.389547] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  731. [ 635.389551] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  732. [ 635.389554] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  733. [ 635.389563] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  734. [ 635.389572] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  735. [ 635.389580] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  736. [ 635.389589] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  737. [ 635.389592] [<ffffffff810523e6>] kthread+0x96/0xa0
  738. [ 635.389595] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  739. [ 635.389598] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  740. [ 635.389601] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  741. [ 635.389603] ---[ end trace 15b8c8d16278c16e ]---
  742. [ 635.393579] ------------[ cut here ]------------
  743. [ 635.393588] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  744. [ 635.393590] Hardware name: X8ST3
  745. [ 635.393592] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  746. [ 635.393608] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  747. [ 635.393610] Call Trace:
  748. [ 635.393614] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  749. [ 635.393618] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  750. [ 635.393625] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  751. [ 635.393635] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  752. [ 635.393642] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  753. [ 635.393649] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  754. [ 635.393655] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  755. [ 635.393659] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  756. [ 635.393667] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  757. [ 635.393677] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  758. [ 635.393687] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  759. [ 635.393690] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  760. [ 635.393700] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  761. [ 635.393709] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  762. [ 635.393713] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  763. [ 635.393716] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  764. [ 635.393725] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  765. [ 635.393733] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  766. [ 635.393742] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  767. [ 635.393751] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  768. [ 635.393754] [<ffffffff810523e6>] kthread+0x96/0xa0
  769. [ 635.393757] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  770. [ 635.393760] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  771. [ 635.393762] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  772. [ 635.393764] ---[ end trace 15b8c8d16278c16f ]---
  773. [ 635.397745] ------------[ cut here ]------------
  774. [ 635.397755] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  775. [ 635.397757] Hardware name: X8ST3
  776. [ 635.397758] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  777. [ 635.397774] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  778. [ 635.397776] Call Trace:
  779. [ 635.397781] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  780. [ 635.397784] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  781. [ 635.397791] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  782. [ 635.397801] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  783. [ 635.397808] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  784. [ 635.397815] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  785. [ 635.397822] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  786. [ 635.397825] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  787. [ 635.397834] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  788. [ 635.397843] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  789. [ 635.397853] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  790. [ 635.397856] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  791. [ 635.397866] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  792. [ 635.397876] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  793. [ 635.397879] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  794. [ 635.397882] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  795. [ 635.397891] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  796. [ 635.397973] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  797. [ 635.397982] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  798. [ 635.397993] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  799. [ 635.397998] [<ffffffff810523e6>] kthread+0x96/0xa0
  800. [ 635.398003] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  801. [ 635.398008] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  802. [ 635.398012] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  803. [ 635.398015] ---[ end trace 15b8c8d16278c170 ]---
  804. [ 635.401842] ------------[ cut here ]------------
  805. [ 635.401851] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  806. [ 635.401853] Hardware name: X8ST3
  807. [ 635.401854] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  808. [ 635.401871] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  809. [ 635.401873] Call Trace:
  810. [ 635.401877] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  811. [ 635.401880] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  812. [ 635.401887] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  813. [ 635.401897] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  814. [ 635.401934] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  815. [ 635.401941] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  816. [ 635.401950] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  817. [ 635.401955] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  818. [ 635.401965] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  819. [ 635.401976] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  820. [ 635.401988] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  821. [ 635.401993] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  822. [ 635.402005] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  823. [ 635.402016] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  824. [ 635.402021] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  825. [ 635.402026] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  826. [ 635.402036] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  827. [ 635.402046] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  828. [ 635.402057] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  829. [ 635.402067] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  830. [ 635.402072] [<ffffffff810523e6>] kthread+0x96/0xa0
  831. [ 635.402076] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  832. [ 635.402080] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  833. [ 635.402085] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  834. [ 635.402088] ---[ end trace 15b8c8d16278c171 ]---
  835. [ 635.406426] ------------[ cut here ]------------
  836. [ 635.406436] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  837. [ 635.406438] Hardware name: X8ST3
  838. [ 635.406439] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  839. [ 635.406456] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  840. [ 635.406457] Call Trace:
  841. [ 635.406462] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  842. [ 635.406465] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  843. [ 635.406472] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  844. [ 635.406482] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  845. [ 635.406489] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  846. [ 635.406496] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  847. [ 635.406502] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  848. [ 635.406506] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  849. [ 635.406514] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  850. [ 635.406523] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  851. [ 635.406533] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  852. [ 635.406537] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  853. [ 635.406546] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  854. [ 635.406556] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  855. [ 635.406559] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  856. [ 635.406563] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  857. [ 635.406571] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  858. [ 635.406580] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  859. [ 635.406589] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  860. [ 635.406597] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  861. [ 635.406600] [<ffffffff810523e6>] kthread+0x96/0xa0
  862. [ 635.406603] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  863. [ 635.406606] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  864. [ 635.406608] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  865. [ 635.406610] ---[ end trace 15b8c8d16278c172 ]---
  866. [ 635.410488] ------------[ cut here ]------------
  867. [ 635.410498] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  868. [ 635.410500] Hardware name: X8ST3
  869. [ 635.410501] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  870. [ 635.410519] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  871. [ 635.410521] Call Trace:
  872. [ 635.410525] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  873. [ 635.410529] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  874. [ 635.410537] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  875. [ 635.410547] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  876. [ 635.410555] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  877. [ 635.410562] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  878. [ 635.410569] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  879. [ 635.410573] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  880. [ 635.410582] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  881. [ 635.410592] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  882. [ 635.410602] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  883. [ 635.410606] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  884. [ 635.410617] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  885. [ 635.410627] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  886. [ 635.410631] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  887. [ 635.410634] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  888. [ 635.410644] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  889. [ 635.410653] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  890. [ 635.410663] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  891. [ 635.410672] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  892. [ 635.410675] [<ffffffff810523e6>] kthread+0x96/0xa0
  893. [ 635.410678] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  894. [ 635.410681] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  895. [ 635.410684] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  896. [ 635.410686] ---[ end trace 15b8c8d16278c173 ]---
  897. [ 635.414925] ------------[ cut here ]------------
  898. [ 635.414935] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  899. [ 635.414937] Hardware name: X8ST3
  900. [ 635.414939] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  901. [ 635.414956] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  902. [ 635.414958] Call Trace:
  903. [ 635.414963] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  904. [ 635.414966] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  905. [ 635.414974] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  906. [ 635.414985] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  907. [ 635.414992] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  908. [ 635.414999] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  909. [ 635.415006] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  910. [ 635.415010] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  911. [ 635.415019] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  912. [ 635.415029] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  913. [ 635.415040] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  914. [ 635.415044] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  915. [ 635.415054] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  916. [ 635.415064] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  917. [ 635.415068] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  918. [ 635.415072] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  919. [ 635.415081] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  920. [ 635.415090] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  921. [ 635.415100] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  922. [ 635.415109] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  923. [ 635.415112] [<ffffffff810523e6>] kthread+0x96/0xa0
  924. [ 635.415116] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  925. [ 635.415119] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  926. [ 635.415122] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  927. [ 635.415124] ---[ end trace 15b8c8d16278c174 ]---
  928. [ 635.419547] ------------[ cut here ]------------
  929. [ 635.419557] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  930. [ 635.419560] Hardware name: X8ST3
  931. [ 635.419561] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  932. [ 635.419579] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  933. [ 635.419581] Call Trace:
  934. [ 635.419585] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  935. [ 635.419589] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  936. [ 635.419597] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  937. [ 635.419607] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  938. [ 635.419615] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  939. [ 635.419622] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  940. [ 635.419629] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  941. [ 635.419633] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  942. [ 635.419641] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  943. [ 635.419652] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  944. [ 635.419662] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  945. [ 635.419666] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  946. [ 635.419677] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  947. [ 635.419687] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  948. [ 635.419691] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  949. [ 635.419694] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  950. [ 635.419703] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  951. [ 635.419713] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  952. [ 635.419722] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  953. [ 635.419732] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  954. [ 635.419735] [<ffffffff810523e6>] kthread+0x96/0xa0
  955. [ 635.419738] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  956. [ 635.419741] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  957. [ 635.419744] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  958. [ 635.419746] ---[ end trace 15b8c8d16278c175 ]---
  959. [ 635.424156] ------------[ cut here ]------------
  960. [ 635.424166] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  961. [ 635.424168] Hardware name: X8ST3
  962. [ 635.424169] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  963. [ 635.424187] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  964. [ 635.424189] Call Trace:
  965. [ 635.424193] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  966. [ 635.424196] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  967. [ 635.424205] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  968. [ 635.424215] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  969. [ 635.424223] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  970. [ 635.424230] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  971. [ 635.424237] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  972. [ 635.424241] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  973. [ 635.424250] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  974. [ 635.424260] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  975. [ 635.424270] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  976. [ 635.424274] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  977. [ 635.424285] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  978. [ 635.424295] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  979. [ 635.424299] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  980. [ 635.424302] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  981. [ 635.424312] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  982. [ 635.424321] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  983. [ 635.424330] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  984. [ 635.424340] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  985. [ 635.424343] [<ffffffff810523e6>] kthread+0x96/0xa0
  986. [ 635.424346] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  987. [ 635.424349] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  988. [ 635.424352] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  989. [ 635.424354] ---[ end trace 15b8c8d16278c176 ]---
  990. [ 635.428411] ------------[ cut here ]------------
  991. [ 635.428421] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  992. [ 635.428424] Hardware name: X8ST3
  993. [ 635.428425] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  994. [ 635.428443] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  995. [ 635.428445] Call Trace:
  996. [ 635.428449] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  997. [ 635.428453] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  998. [ 635.428461] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  999. [ 635.428471] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1000. [ 635.428479] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1001. [ 635.428486] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1002. [ 635.428493] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1003. [ 635.428497] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1004. [ 635.428506] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1005. [ 635.428516] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1006. [ 635.428527] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1007. [ 635.428530] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1008. [ 635.428541] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1009. [ 635.428551] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1010. [ 635.428555] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1011. [ 635.428559] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1012. [ 635.428568] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1013. [ 635.428577] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1014. [ 635.428587] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1015. [ 635.428596] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1016. [ 635.428599] [<ffffffff810523e6>] kthread+0x96/0xa0
  1017. [ 635.428603] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1018. [ 635.428606] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1019. [ 635.428608] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1020. [ 635.428610] ---[ end trace 15b8c8d16278c177 ]---
  1021. [ 635.432851] ------------[ cut here ]------------
  1022. [ 635.432861] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1023. [ 635.432863] Hardware name: X8ST3
  1024. [ 635.432865] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1025. [ 635.432882] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1026. [ 635.432884] Call Trace:
  1027. [ 635.432889] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1028. [ 635.432892] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1029. [ 635.432941] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1030. [ 635.432954] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1031. [ 635.432964] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1032. [ 635.432973] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1033. [ 635.432982] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1034. [ 635.432988] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1035. [ 635.432998] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1036. [ 635.433010] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1037. [ 635.433023] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1038. [ 635.433028] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1039. [ 635.433041] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1040. [ 635.433053] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1041. [ 635.433059] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1042. [ 635.433064] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1043. [ 635.433075] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1044. [ 635.433086] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1045. [ 635.433097] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1046. [ 635.433109] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1047. [ 635.433113] [<ffffffff810523e6>] kthread+0x96/0xa0
  1048. [ 635.433118] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1049. [ 635.433123] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1050. [ 635.433128] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1051. [ 635.433131] ---[ end trace 15b8c8d16278c178 ]---
  1052. [ 635.437435] ------------[ cut here ]------------
  1053. [ 635.437445] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1054. [ 635.437447] Hardware name: X8ST3
  1055. [ 635.437449] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1056. [ 635.437466] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1057. [ 635.437468] Call Trace:
  1058. [ 635.437472] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1059. [ 635.437476] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1060. [ 635.437484] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1061. [ 635.437494] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1062. [ 635.437502] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1063. [ 635.437509] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1064. [ 635.437516] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1065. [ 635.437520] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1066. [ 635.437528] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1067. [ 635.437539] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1068. [ 635.437549] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1069. [ 635.437553] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1070. [ 635.437563] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1071. [ 635.437573] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1072. [ 635.437577] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1073. [ 635.437580] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1074. [ 635.437590] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1075. [ 635.437599] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1076. [ 635.437608] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1077. [ 635.437617] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1078. [ 635.437621] [<ffffffff810523e6>] kthread+0x96/0xa0
  1079. [ 635.437624] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1080. [ 635.437627] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1081. [ 635.437629] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1082. [ 635.437631] ---[ end trace 15b8c8d16278c179 ]---
  1083. [ 635.442277] ------------[ cut here ]------------
  1084. [ 635.442288] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1085. [ 635.442290] Hardware name: X8ST3
  1086. [ 635.442291] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1087. [ 635.442309] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1088. [ 635.442311] Call Trace:
  1089. [ 635.442315] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1090. [ 635.442318] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1091. [ 635.442327] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1092. [ 635.442337] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1093. [ 635.442345] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1094. [ 635.442352] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1095. [ 635.442359] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1096. [ 635.442363] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1097. [ 635.442371] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1098. [ 635.442382] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1099. [ 635.442392] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1100. [ 635.442396] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1101. [ 635.442407] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1102. [ 635.442417] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1103. [ 635.442421] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1104. [ 635.442424] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1105. [ 635.442434] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1106. [ 635.442443] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1107. [ 635.442452] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1108. [ 635.442462] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1109. [ 635.442465] [<ffffffff810523e6>] kthread+0x96/0xa0
  1110. [ 635.442468] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1111. [ 635.442471] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1112. [ 635.442474] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1113. [ 635.442476] ---[ end trace 15b8c8d16278c17a ]---
  1114. [ 635.446708] ------------[ cut here ]------------
  1115. [ 635.446719] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1116. [ 635.446721] Hardware name: X8ST3
  1117. [ 635.446722] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1118. [ 635.446740] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1119. [ 635.446742] Call Trace:
  1120. [ 635.446746] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1121. [ 635.446750] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1122. [ 635.446758] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1123. [ 635.446769] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1124. [ 635.446776] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1125. [ 635.446783] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1126. [ 635.446790] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1127. [ 635.446794] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1128. [ 635.446803] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1129. [ 635.446813] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1130. [ 635.446824] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1131. [ 635.446827] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1132. [ 635.446838] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1133. [ 635.446848] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1134. [ 635.446852] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1135. [ 635.446856] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1136. [ 635.446865] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1137. [ 635.446874] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1138. [ 635.446884] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1139. [ 635.446893] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1140. [ 635.446935] [<ffffffff810523e6>] kthread+0x96/0xa0
  1141. [ 635.446938] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1142. [ 635.446942] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1143. [ 635.446947] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1144. [ 635.446950] ---[ end trace 15b8c8d16278c17b ]---
  1145. [ 635.451396] ------------[ cut here ]------------
  1146. [ 635.451406] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1147. [ 635.451408] Hardware name: X8ST3
  1148. [ 635.451409] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1149. [ 635.451426] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1150. [ 635.451429] Call Trace:
  1151. [ 635.451433] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1152. [ 635.451436] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1153. [ 635.451444] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1154. [ 635.451455] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1155. [ 635.451462] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1156. [ 635.451469] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1157. [ 635.451476] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1158. [ 635.451480] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1159. [ 635.451489] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1160. [ 635.451499] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1161. [ 635.451509] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1162. [ 635.451513] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1163. [ 635.451523] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1164. [ 635.451533] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1165. [ 635.451537] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1166. [ 635.451541] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1167. [ 635.451550] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1168. [ 635.451559] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1169. [ 635.451568] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1170. [ 635.451578] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1171. [ 635.451581] [<ffffffff810523e6>] kthread+0x96/0xa0
  1172. [ 635.451584] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1173. [ 635.451587] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1174. [ 635.451590] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1175. [ 635.451592] ---[ end trace 15b8c8d16278c17c ]---
  1176. [ 635.455987] ------------[ cut here ]------------
  1177. [ 635.455997] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1178. [ 635.456000] Hardware name: X8ST3
  1179. [ 635.456001] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1180. [ 635.456018] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1181. [ 635.456021] Call Trace:
  1182. [ 635.456025] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1183. [ 635.456028] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1184. [ 635.456036] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1185. [ 635.456047] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1186. [ 635.456054] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1187. [ 635.456061] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1188. [ 635.456068] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1189. [ 635.456072] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1190. [ 635.456081] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1191. [ 635.456091] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1192. [ 635.456101] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1193. [ 635.456105] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1194. [ 635.456115] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1195. [ 635.456125] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1196. [ 635.456129] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1197. [ 635.456133] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1198. [ 635.456142] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1199. [ 635.456151] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1200. [ 635.456161] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1201. [ 635.456170] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1202. [ 635.456173] [<ffffffff810523e6>] kthread+0x96/0xa0
  1203. [ 635.456176] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1204. [ 635.456179] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1205. [ 635.456182] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1206. [ 635.456184] ---[ end trace 15b8c8d16278c17d ]---
  1207. [ 635.460507] ------------[ cut here ]------------
  1208. [ 635.460518] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1209. [ 635.460520] Hardware name: X8ST3
  1210. [ 635.460521] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1211. [ 635.460539] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1212. [ 635.460541] Call Trace:
  1213. [ 635.460545] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1214. [ 635.460549] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1215. [ 635.460557] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1216. [ 635.460568] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1217. [ 635.460575] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1218. [ 635.460582] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1219. [ 635.460589] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1220. [ 635.460593] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1221. [ 635.460602] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1222. [ 635.460612] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1223. [ 635.460623] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1224. [ 635.460626] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1225. [ 635.460637] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1226. [ 635.460647] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1227. [ 635.460651] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1228. [ 635.460654] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1229. [ 635.460664] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1230. [ 635.460673] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1231. [ 635.460682] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1232. [ 635.460692] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1233. [ 635.460695] [<ffffffff810523e6>] kthread+0x96/0xa0
  1234. [ 635.460698] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1235. [ 635.460701] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1236. [ 635.460704] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1237. [ 635.460706] ---[ end trace 15b8c8d16278c17e ]---
  1238. [ 635.465466] ------------[ cut here ]------------
  1239. [ 635.465476] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1240. [ 635.465479] Hardware name: X8ST3
  1241. [ 635.465480] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1242. [ 635.465497] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1243. [ 635.465499] Call Trace:
  1244. [ 635.465504] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1245. [ 635.465507] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1246. [ 635.465515] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1247. [ 635.465526] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1248. [ 635.465533] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1249. [ 635.465540] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1250. [ 635.465548] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1251. [ 635.465551] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1252. [ 635.465560] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1253. [ 635.465570] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1254. [ 635.465581] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1255. [ 635.465585] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1256. [ 635.465595] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1257. [ 635.465605] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1258. [ 635.465609] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1259. [ 635.465612] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1260. [ 635.465622] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1261. [ 635.465631] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1262. [ 635.465641] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1263. [ 635.465650] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1264. [ 635.465653] [<ffffffff810523e6>] kthread+0x96/0xa0
  1265. [ 635.465656] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1266. [ 635.465659] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1267. [ 635.465662] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1268. [ 635.465664] ---[ end trace 15b8c8d16278c17f ]---
  1269. [ 635.470438] ------------[ cut here ]------------
  1270. [ 635.470448] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1271. [ 635.470451] Hardware name: X8ST3
  1272. [ 635.470452] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1273. [ 635.470471] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1274. [ 635.470473] Call Trace:
  1275. [ 635.470478] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1276. [ 635.470481] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1277. [ 635.470490] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1278. [ 635.470501] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1279. [ 635.470510] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1280. [ 635.470517] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1281. [ 635.470525] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1282. [ 635.470529] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1283. [ 635.470538] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1284. [ 635.470549] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1285. [ 635.470560] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1286. [ 635.470564] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1287. [ 635.470576] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1288. [ 635.470586] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1289. [ 635.470591] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1290. [ 635.470594] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1291. [ 635.470604] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1292. [ 635.470614] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1293. [ 635.470624] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1294. [ 635.470634] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1295. [ 635.470637] [<ffffffff810523e6>] kthread+0x96/0xa0
  1296. [ 635.470641] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1297. [ 635.470644] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1298. [ 635.470647] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1299. [ 635.470649] ---[ end trace 15b8c8d16278c180 ]---
  1300. [ 635.475296] ------------[ cut here ]------------
  1301. [ 635.475307] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1302. [ 635.475309] Hardware name: X8ST3
  1303. [ 635.475311] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1304. [ 635.475329] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1305. [ 635.475332] Call Trace:
  1306. [ 635.475336] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1307. [ 635.475340] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1308. [ 635.475349] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1309. [ 635.475360] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1310. [ 635.475368] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1311. [ 635.475376] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1312. [ 635.475383] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1313. [ 635.475387] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1314. [ 635.475397] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1315. [ 635.475408] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1316. [ 635.475419] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1317. [ 635.475423] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1318. [ 635.475434] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1319. [ 635.475445] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1320. [ 635.475449] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1321. [ 635.475453] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1322. [ 635.475463] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1323. [ 635.475473] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1324. [ 635.475483] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1325. [ 635.475493] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1326. [ 635.475496] [<ffffffff810523e6>] kthread+0x96/0xa0
  1327. [ 635.475500] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1328. [ 635.475503] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1329. [ 635.475506] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1330. [ 635.475508] ---[ end trace 15b8c8d16278c181 ]---
  1331. [ 635.479551] ------------[ cut here ]------------
  1332. [ 635.479562] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1333. [ 635.479564] Hardware name: X8ST3
  1334. [ 635.479566] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1335. [ 635.479584] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1336. [ 635.479587] Call Trace:
  1337. [ 635.479591] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1338. [ 635.479595] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1339. [ 635.479604] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1340. [ 635.479615] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1341. [ 635.479623] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1342. [ 635.479631] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1343. [ 635.479638] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1344. [ 635.479642] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1345. [ 635.479652] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1346. [ 635.479663] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1347. [ 635.479674] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1348. [ 635.479678] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1349. [ 635.479690] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1350. [ 635.479700] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1351. [ 635.479705] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1352. [ 635.479708] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1353. [ 635.479718] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1354. [ 635.479728] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1355. [ 635.479738] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1356. [ 635.479748] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1357. [ 635.479752] [<ffffffff810523e6>] kthread+0x96/0xa0
  1358. [ 635.479755] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1359. [ 635.479758] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1360. [ 635.479761] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1361. [ 635.479763] ---[ end trace 15b8c8d16278c182 ]---
  1362. [ 635.484197] ------------[ cut here ]------------
  1363. [ 635.484208] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1364. [ 635.484210] Hardware name: X8ST3
  1365. [ 635.484212] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1366. [ 635.484231] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1367. [ 635.484233] Call Trace:
  1368. [ 635.484237] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1369. [ 635.484241] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1370. [ 635.484250] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1371. [ 635.484261] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1372. [ 635.484269] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1373. [ 635.484277] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1374. [ 635.484284] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1375. [ 635.484288] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1376. [ 635.484297] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1377. [ 635.484309] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1378. [ 635.484320] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1379. [ 635.484324] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1380. [ 635.484335] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1381. [ 635.484346] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1382. [ 635.484350] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1383. [ 635.484353] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1384. [ 635.484363] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1385. [ 635.484373] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1386. [ 635.484383] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1387. [ 635.484393] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1388. [ 635.484396] [<ffffffff810523e6>] kthread+0x96/0xa0
  1389. [ 635.484400] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1390. [ 635.484403] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1391. [ 635.484406] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1392. [ 635.484408] ---[ end trace 15b8c8d16278c183 ]---
  1393. [ 635.488784] ------------[ cut here ]------------
  1394. [ 635.488795] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1395. [ 635.488798] Hardware name: X8ST3
  1396. [ 635.488799] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1397. [ 635.488818] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1398. [ 635.488820] Call Trace:
  1399. [ 635.488824] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1400. [ 635.488828] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1401. [ 635.488837] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1402. [ 635.488848] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1403. [ 635.488856] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1404. [ 635.488863] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1405. [ 635.488871] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1406. [ 635.488875] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1407. [ 635.488884] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1408. [ 635.488895] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1409. [ 635.488952] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1410. [ 635.488959] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1411. [ 635.488972] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1412. [ 635.488985] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1413. [ 635.488992] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1414. [ 635.488997] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1415. [ 635.489009] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1416. [ 635.489021] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1417. [ 635.489033] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1418. [ 635.489045] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1419. [ 635.489050] [<ffffffff810523e6>] kthread+0x96/0xa0
  1420. [ 635.489055] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1421. [ 635.489060] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1422. [ 635.489065] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1423. [ 635.489068] ---[ end trace 15b8c8d16278c184 ]---
  1424. [ 635.493688] ------------[ cut here ]------------
  1425. [ 635.493698] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1426. [ 635.493701] Hardware name: X8ST3
  1427. [ 635.493702] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1428. [ 635.493721] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1429. [ 635.493723] Call Trace:
  1430. [ 635.493728] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1431. [ 635.493731] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1432. [ 635.493740] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1433. [ 635.493751] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1434. [ 635.493759] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1435. [ 635.493766] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1436. [ 635.493774] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1437. [ 635.493778] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1438. [ 635.493787] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1439. [ 635.493798] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1440. [ 635.493809] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1441. [ 635.493813] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1442. [ 635.493825] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1443. [ 635.493836] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1444. [ 635.493840] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1445. [ 635.493843] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1446. [ 635.493853] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1447. [ 635.493863] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1448. [ 635.493873] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1449. [ 635.493883] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1450. [ 635.493886] [<ffffffff810523e6>] kthread+0x96/0xa0
  1451. [ 635.493890] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1452. [ 635.493893] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1453. [ 635.493932] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1454. [ 635.493934] ---[ end trace 15b8c8d16278c185 ]---
  1455. [ 635.498618] ------------[ cut here ]------------
  1456. [ 635.498629] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1457. [ 635.498631] Hardware name: X8ST3
  1458. [ 635.498633] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1459. [ 635.498651] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1460. [ 635.498654] Call Trace:
  1461. [ 635.498658] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1462. [ 635.498662] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1463. [ 635.498670] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1464. [ 635.498682] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1465. [ 635.498690] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1466. [ 635.498697] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1467. [ 635.498705] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1468. [ 635.498709] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1469. [ 635.498718] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1470. [ 635.498729] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1471. [ 635.498740] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1472. [ 635.498744] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1473. [ 635.498755] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1474. [ 635.498766] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1475. [ 635.498770] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1476. [ 635.498774] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1477. [ 635.498784] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1478. [ 635.498793] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1479. [ 635.498803] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1480. [ 635.498813] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1481. [ 635.498817] [<ffffffff810523e6>] kthread+0x96/0xa0
  1482. [ 635.498820] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1483. [ 635.498823] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1484. [ 635.498826] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1485. [ 635.498828] ---[ end trace 15b8c8d16278c186 ]---
  1486. [ 635.503360] ------------[ cut here ]------------
  1487. [ 635.503371] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1488. [ 635.503373] Hardware name: X8ST3
  1489. [ 635.503374] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1490. [ 635.503393] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1491. [ 635.503395] Call Trace:
  1492. [ 635.503400] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1493. [ 635.503404] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1494. [ 635.503412] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1495. [ 635.503424] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1496. [ 635.503432] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1497. [ 635.503439] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1498. [ 635.503447] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1499. [ 635.503451] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1500. [ 635.503460] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1501. [ 635.503471] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1502. [ 635.503482] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1503. [ 635.503487] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1504. [ 635.503498] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1505. [ 635.503509] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1506. [ 635.503513] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1507. [ 635.503516] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1508. [ 635.503527] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1509. [ 635.503536] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1510. [ 635.503546] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1511. [ 635.503557] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1512. [ 635.503560] [<ffffffff810523e6>] kthread+0x96/0xa0
  1513. [ 635.503563] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1514. [ 635.503567] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1515. [ 635.503570] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1516. [ 635.503572] ---[ end trace 15b8c8d16278c187 ]---
  1517. [ 635.507581] ------------[ cut here ]------------
  1518. [ 635.507592] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1519. [ 635.507595] Hardware name: X8ST3
  1520. [ 635.507596] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1521. [ 635.507615] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1522. [ 635.507617] Call Trace:
  1523. [ 635.507621] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1524. [ 635.507625] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1525. [ 635.507634] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1526. [ 635.507645] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1527. [ 635.507653] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1528. [ 635.507660] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1529. [ 635.507668] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1530. [ 635.507672] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1531. [ 635.507681] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1532. [ 635.507692] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1533. [ 635.507703] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1534. [ 635.507707] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1535. [ 635.507719] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1536. [ 635.507729] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1537. [ 635.507734] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1538. [ 635.507737] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1539. [ 635.507747] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1540. [ 635.507757] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1541. [ 635.507767] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1542. [ 635.507777] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1543. [ 635.507780] [<ffffffff810523e6>] kthread+0x96/0xa0
  1544. [ 635.507783] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1545. [ 635.507787] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1546. [ 635.507790] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1547. [ 635.507792] ---[ end trace 15b8c8d16278c188 ]---
  1548. [ 635.512367] ------------[ cut here ]------------
  1549. [ 635.512378] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1550. [ 635.512380] Hardware name: X8ST3
  1551. [ 635.512382] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1552. [ 635.512400] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1553. [ 635.512402] Call Trace:
  1554. [ 635.512407] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1555. [ 635.512411] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1556. [ 635.512419] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1557. [ 635.512431] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1558. [ 635.512439] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1559. [ 635.512446] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1560. [ 635.512453] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1561. [ 635.512458] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1562. [ 635.512467] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1563. [ 635.512478] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1564. [ 635.512489] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1565. [ 635.512493] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1566. [ 635.512504] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1567. [ 635.512515] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1568. [ 635.512519] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1569. [ 635.512523] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1570. [ 635.512532] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1571. [ 635.512542] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1572. [ 635.512552] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1573. [ 635.512562] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1574. [ 635.512566] [<ffffffff810523e6>] kthread+0x96/0xa0
  1575. [ 635.512569] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1576. [ 635.512572] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1577. [ 635.512575] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1578. [ 635.512577] ---[ end trace 15b8c8d16278c189 ]---
  1579. [ 635.517315] ------------[ cut here ]------------
  1580. [ 635.517326] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1581. [ 635.517329] Hardware name: X8ST3
  1582. [ 635.517330] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1583. [ 635.517349] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1584. [ 635.517351] Call Trace:
  1585. [ 635.517355] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1586. [ 635.517359] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1587. [ 635.517368] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1588. [ 635.517379] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1589. [ 635.517387] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1590. [ 635.517395] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1591. [ 635.517402] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1592. [ 635.517406] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1593. [ 635.517416] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1594. [ 635.517427] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1595. [ 635.517438] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1596. [ 635.517442] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1597. [ 635.517453] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1598. [ 635.517464] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1599. [ 635.517468] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1600. [ 635.517472] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1601. [ 635.517482] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1602. [ 635.517492] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1603. [ 635.517502] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1604. [ 635.517512] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1605. [ 635.517515] [<ffffffff810523e6>] kthread+0x96/0xa0
  1606. [ 635.517519] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1607. [ 635.517522] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1608. [ 635.517525] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1609. [ 635.517527] ---[ end trace 15b8c8d16278c18a ]---
  1610. [ 635.521522] ------------[ cut here ]------------
  1611. [ 635.521533] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1612. [ 635.521536] Hardware name: X8ST3
  1613. [ 635.521537] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1614. [ 635.521556] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1615. [ 635.521558] Call Trace:
  1616. [ 635.521563] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1617. [ 635.521566] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1618. [ 635.521575] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1619. [ 635.521586] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1620. [ 635.521594] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1621. [ 635.521602] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1622. [ 635.521609] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1623. [ 635.521614] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1624. [ 635.521623] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1625. [ 635.521634] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1626. [ 635.521645] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1627. [ 635.521649] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1628. [ 635.521660] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1629. [ 635.521671] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1630. [ 635.521676] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1631. [ 635.521679] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1632. [ 635.521689] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1633. [ 635.521699] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1634. [ 635.521709] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1635. [ 635.521719] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1636. [ 635.521723] [<ffffffff810523e6>] kthread+0x96/0xa0
  1637. [ 635.521726] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1638. [ 635.521729] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1639. [ 635.521732] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1640. [ 635.521735] ---[ end trace 15b8c8d16278c18b ]---
  1641. [ 635.525554] ------------[ cut here ]------------
  1642. [ 635.525565] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1643. [ 635.525567] Hardware name: X8ST3
  1644. [ 635.525568] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1645. [ 635.525587] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1646. [ 635.525589] Call Trace:
  1647. [ 635.525594] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1648. [ 635.525598] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1649. [ 635.525606] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1650. [ 635.525618] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1651. [ 635.525626] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1652. [ 635.525633] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1653. [ 635.525641] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1654. [ 635.525645] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1655. [ 635.525654] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1656. [ 635.525666] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1657. [ 635.525677] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1658. [ 635.525681] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1659. [ 635.525692] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1660. [ 635.525703] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1661. [ 635.525707] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1662. [ 635.525711] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1663. [ 635.525721] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1664. [ 635.525731] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1665. [ 635.525741] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1666. [ 635.525751] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1667. [ 635.525754] [<ffffffff810523e6>] kthread+0x96/0xa0
  1668. [ 635.525758] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1669. [ 635.525761] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1670. [ 635.525764] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1671. [ 635.525766] ---[ end trace 15b8c8d16278c18c ]---
  1672. [ 635.529564] ------------[ cut here ]------------
  1673. [ 635.529575] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1674. [ 635.529577] Hardware name: X8ST3
  1675. [ 635.529579] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1676. [ 635.529597] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1677. [ 635.529599] Call Trace:
  1678. [ 635.529604] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1679. [ 635.529608] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1680. [ 635.529616] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1681. [ 635.529628] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1682. [ 635.529636] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1683. [ 635.529643] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1684. [ 635.529651] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1685. [ 635.529655] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1686. [ 635.529664] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1687. [ 635.529676] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1688. [ 635.529687] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1689. [ 635.529691] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1690. [ 635.529702] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1691. [ 635.529713] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1692. [ 635.529717] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1693. [ 635.529721] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1694. [ 635.529731] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1695. [ 635.529741] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1696. [ 635.529751] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1697. [ 635.529761] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1698. [ 635.529764] [<ffffffff810523e6>] kthread+0x96/0xa0
  1699. [ 635.529768] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1700. [ 635.529771] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1701. [ 635.529774] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1702. [ 635.529776] ---[ end trace 15b8c8d16278c18d ]---
  1703. [ 635.533591] ------------[ cut here ]------------
  1704. [ 635.533602] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1705. [ 635.533604] Hardware name: X8ST3
  1706. [ 635.533606] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1707. [ 635.533624] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1708. [ 635.533626] Call Trace:
  1709. [ 635.533631] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1710. [ 635.533635] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1711. [ 635.533643] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1712. [ 635.533655] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1713. [ 635.533663] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1714. [ 635.533670] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1715. [ 635.533678] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1716. [ 635.533682] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1717. [ 635.533691] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1718. [ 635.533703] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1719. [ 635.533714] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1720. [ 635.533718] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1721. [ 635.533729] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1722. [ 635.533740] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1723. [ 635.533744] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1724. [ 635.533748] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1725. [ 635.533758] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1726. [ 635.533768] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1727. [ 635.533778] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1728. [ 635.533788] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1729. [ 635.533791] [<ffffffff810523e6>] kthread+0x96/0xa0
  1730. [ 635.533794] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1731. [ 635.533798] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1732. [ 635.533801] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1733. [ 635.533803] ---[ end trace 15b8c8d16278c18e ]---
  1734. [ 635.537597] ------------[ cut here ]------------
  1735. [ 635.537608] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1736. [ 635.537610] Hardware name: X8ST3
  1737. [ 635.537612] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1738. [ 635.537630] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1739. [ 635.537633] Call Trace:
  1740. [ 635.537637] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1741. [ 635.537641] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1742. [ 635.537650] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1743. [ 635.537661] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1744. [ 635.537669] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1745. [ 635.537677] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1746. [ 635.537684] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1747. [ 635.537689] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1748. [ 635.537698] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1749. [ 635.537709] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1750. [ 635.537720] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1751. [ 635.537724] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1752. [ 635.537736] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1753. [ 635.537746] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1754. [ 635.537751] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1755. [ 635.537754] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1756. [ 635.537764] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1757. [ 635.537774] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1758. [ 635.537784] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1759. [ 635.537794] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1760. [ 635.537798] [<ffffffff810523e6>] kthread+0x96/0xa0
  1761. [ 635.537801] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1762. [ 635.537804] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1763. [ 635.537807] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1764. [ 635.537810] ---[ end trace 15b8c8d16278c18f ]---
  1765. [ 635.541557] ------------[ cut here ]------------
  1766. [ 635.541566] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1767. [ 635.541569] Hardware name: X8ST3
  1768. [ 635.541570] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1769. [ 635.541586] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1770. [ 635.541588] Call Trace:
  1771. [ 635.541592] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1772. [ 635.541596] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1773. [ 635.541603] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1774. [ 635.541613] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1775. [ 635.541620] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1776. [ 635.541627] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1777. [ 635.541633] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1778. [ 635.541637] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1779. [ 635.541645] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1780. [ 635.541655] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1781. [ 635.541665] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1782. [ 635.541668] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1783. [ 635.541678] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1784. [ 635.541688] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1785. [ 635.541692] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1786. [ 635.541695] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1787. [ 635.541703] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1788. [ 635.541712] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1789. [ 635.541721] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1790. [ 635.541730] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1791. [ 635.541733] [<ffffffff810523e6>] kthread+0x96/0xa0
  1792. [ 635.541736] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1793. [ 635.541739] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1794. [ 635.541741] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1795. [ 635.541743] ---[ end trace 15b8c8d16278c190 ]---
  1796. [ 635.545317] ------------[ cut here ]------------
  1797. [ 635.545326] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1798. [ 635.545328] Hardware name: X8ST3
  1799. [ 635.545330] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1800. [ 635.545346] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1801. [ 635.545348] Call Trace:
  1802. [ 635.545352] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1803. [ 635.545355] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1804. [ 635.545363] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1805. [ 635.545373] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1806. [ 635.545380] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1807. [ 635.545386] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1808. [ 635.545393] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1809. [ 635.545396] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1810. [ 635.545404] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1811. [ 635.545414] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1812. [ 635.545424] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1813. [ 635.545427] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1814. [ 635.545437] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1815. [ 635.545447] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1816. [ 635.545450] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1817. [ 635.545453] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1818. [ 635.545462] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1819. [ 635.545471] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1820. [ 635.545480] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1821. [ 635.545488] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1822. [ 635.545491] [<ffffffff810523e6>] kthread+0x96/0xa0
  1823. [ 635.545494] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1824. [ 635.545497] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1825. [ 635.545500] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1826. [ 635.545501] ---[ end trace 15b8c8d16278c191 ]---
  1827. [ 635.548991] ------------[ cut here ]------------
  1828. [ 635.549000] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1829. [ 635.549003] Hardware name: X8ST3
  1830. [ 635.549004] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1831. [ 635.549020] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1832. [ 635.549022] Call Trace:
  1833. [ 635.549027] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1834. [ 635.549030] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1835. [ 635.549037] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1836. [ 635.549047] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1837. [ 635.549055] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1838. [ 635.549061] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1839. [ 635.549068] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1840. [ 635.549071] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1841. [ 635.549079] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1842. [ 635.549089] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1843. [ 635.549099] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1844. [ 635.549103] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1845. [ 635.549113] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1846. [ 635.549122] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1847. [ 635.549126] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1848. [ 635.549129] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1849. [ 635.549138] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1850. [ 635.549146] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1851. [ 635.549155] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1852. [ 635.549164] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1853. [ 635.549167] [<ffffffff810523e6>] kthread+0x96/0xa0
  1854. [ 635.549170] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1855. [ 635.549173] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1856. [ 635.549175] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1857. [ 635.549177] ---[ end trace 15b8c8d16278c192 ]---
  1858. [ 635.553540] ------------[ cut here ]------------
  1859. [ 635.553549] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1860. [ 635.553552] Hardware name: X8ST3
  1861. [ 635.553553] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1862. [ 635.553569] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1863. [ 635.553571] Call Trace:
  1864. [ 635.553576] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1865. [ 635.553579] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1866. [ 635.553586] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1867. [ 635.553596] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1868. [ 635.553603] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1869. [ 635.553610] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1870. [ 635.553616] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1871. [ 635.553620] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1872. [ 635.553628] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1873. [ 635.553638] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1874. [ 635.553647] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1875. [ 635.553651] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1876. [ 635.553661] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1877. [ 635.553670] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1878. [ 635.553674] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1879. [ 635.553677] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1880. [ 635.553685] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1881. [ 635.553694] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1882. [ 635.553703] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1883. [ 635.553711] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1884. [ 635.553714] [<ffffffff810523e6>] kthread+0x96/0xa0
  1885. [ 635.553717] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1886. [ 635.553720] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1887. [ 635.553723] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1888. [ 635.553724] ---[ end trace 15b8c8d16278c193 ]---
  1889. [ 635.558100] ------------[ cut here ]------------
  1890. [ 635.558110] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1891. [ 635.558112] Hardware name: X8ST3
  1892. [ 635.558113] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1893. [ 635.558129] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1894. [ 635.558131] Call Trace:
  1895. [ 635.558135] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1896. [ 635.558138] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1897. [ 635.558146] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1898. [ 635.558156] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1899. [ 635.558163] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1900. [ 635.558169] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1901. [ 635.558176] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1902. [ 635.558180] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1903. [ 635.558188] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1904. [ 635.558197] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1905. [ 635.558207] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1906. [ 635.558210] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1907. [ 635.558220] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1908. [ 635.558230] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1909. [ 635.558233] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1910. [ 635.558236] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1911. [ 635.558245] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1912. [ 635.558253] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1913. [ 635.558262] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1914. [ 635.558271] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1915. [ 635.558274] [<ffffffff810523e6>] kthread+0x96/0xa0
  1916. [ 635.558277] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1917. [ 635.558280] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1918. [ 635.558282] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1919. [ 635.558284] ---[ end trace 15b8c8d16278c194 ]---
  1920. [ 635.562144] ------------[ cut here ]------------
  1921. [ 635.562154] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1922. [ 635.562156] Hardware name: X8ST3
  1923. [ 635.562157] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1924. [ 635.562174] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1925. [ 635.562176] Call Trace:
  1926. [ 635.562180] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1927. [ 635.562183] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1928. [ 635.562191] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1929. [ 635.562201] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1930. [ 635.562208] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1931. [ 635.562214] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1932. [ 635.562221] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1933. [ 635.562225] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1934. [ 635.562233] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1935. [ 635.562243] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1936. [ 635.562253] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1937. [ 635.562256] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1938. [ 635.562266] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1939. [ 635.562276] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1940. [ 635.562279] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1941. [ 635.562282] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1942. [ 635.562291] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1943. [ 635.562300] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1944. [ 635.562309] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1945. [ 635.562318] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1946. [ 635.562321] [<ffffffff810523e6>] kthread+0x96/0xa0
  1947. [ 635.562324] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1948. [ 635.562327] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1949. [ 635.562329] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1950. [ 635.562331] ---[ end trace 15b8c8d16278c195 ]---
  1951. [ 635.566343] ------------[ cut here ]------------
  1952. [ 635.566353] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1953. [ 635.566355] Hardware name: X8ST3
  1954. [ 635.566356] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1955. [ 635.566373] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1956. [ 635.566375] Call Trace:
  1957. [ 635.566379] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1958. [ 635.566382] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1959. [ 635.566390] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1960. [ 635.566399] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1961. [ 635.566407] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1962. [ 635.566413] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1963. [ 635.566420] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1964. [ 635.566423] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1965. [ 635.566432] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1966. [ 635.566441] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1967. [ 635.566451] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1968. [ 635.566455] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1969. [ 635.566464] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1970. [ 635.566474] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1971. [ 635.566478] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1972. [ 635.566481] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1973. [ 635.566489] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1974. [ 635.566498] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  1975. [ 635.566507] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1976. [ 635.566516] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1977. [ 635.566518] [<ffffffff810523e6>] kthread+0x96/0xa0
  1978. [ 635.566522] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1979. [ 635.566524] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1980. [ 635.566527] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1981. [ 635.566529] ---[ end trace 15b8c8d16278c196 ]---
  1982. [ 635.570163] ------------[ cut here ]------------
  1983. [ 635.570173] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1984. [ 635.570175] Hardware name: X8ST3
  1985. [ 635.570177] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1986. [ 635.570193] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1987. [ 635.570195] Call Trace:
  1988. [ 635.570199] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1989. [ 635.570203] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1990. [ 635.570210] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1991. [ 635.570220] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1992. [ 635.570227] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  1993. [ 635.570234] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1994. [ 635.570240] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1995. [ 635.570244] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1996. [ 635.570252] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1997. [ 635.570262] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  1998. [ 635.570271] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1999. [ 635.570275] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2000. [ 635.570285] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2001. [ 635.570294] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2002. [ 635.570298] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2003. [ 635.570301] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2004. [ 635.570310] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2005. [ 635.570319] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2006. [ 635.570327] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2007. [ 635.570336] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2008. [ 635.570339] [<ffffffff810523e6>] kthread+0x96/0xa0
  2009. [ 635.570342] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2010. [ 635.570345] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2011. [ 635.570347] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2012. [ 635.570349] ---[ end trace 15b8c8d16278c197 ]---
  2013. [ 635.573857] ------------[ cut here ]------------
  2014. [ 635.573867] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2015. [ 635.573869] Hardware name: X8ST3
  2016. [ 635.573870] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2017. [ 635.573887] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2018. [ 635.573889] Call Trace:
  2019. [ 635.573893] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2020. [ 635.573896] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2021. [ 635.573944] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2022. [ 635.573956] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2023. [ 635.573965] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2024. [ 635.573973] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2025. [ 635.573981] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2026. [ 635.573987] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2027. [ 635.573996] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2028. [ 635.574008] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2029. [ 635.574019] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2030. [ 635.574024] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2031. [ 635.574036] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2032. [ 635.574047] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2033. [ 635.574052] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2034. [ 635.574057] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2035. [ 635.574067] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2036. [ 635.574077] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2037. [ 635.574088] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2038. [ 635.574098] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2039. [ 635.574103] [<ffffffff810523e6>] kthread+0x96/0xa0
  2040. [ 635.574107] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2041. [ 635.574112] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2042. [ 635.574115] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2043. [ 635.574118] ---[ end trace 15b8c8d16278c198 ]---
  2044. [ 635.577588] ------------[ cut here ]------------
  2045. [ 635.577598] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2046. [ 635.577600] Hardware name: X8ST3
  2047. [ 635.577601] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2048. [ 635.577618] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2049. [ 635.577619] Call Trace:
  2050. [ 635.577624] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2051. [ 635.577627] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2052. [ 635.577634] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2053. [ 635.577644] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2054. [ 635.577651] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2055. [ 635.577658] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2056. [ 635.577665] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2057. [ 635.577668] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2058. [ 635.577676] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2059. [ 635.577686] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2060. [ 635.577696] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2061. [ 635.577699] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2062. [ 635.577709] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2063. [ 635.577719] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2064. [ 635.577722] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2065. [ 635.577725] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2066. [ 635.577734] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2067. [ 635.577743] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2068. [ 635.577752] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2069. [ 635.577760] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2070. [ 635.577763] [<ffffffff810523e6>] kthread+0x96/0xa0
  2071. [ 635.577766] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2072. [ 635.577769] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2073. [ 635.577772] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2074. [ 635.577774] ---[ end trace 15b8c8d16278c199 ]---
  2075. [ 635.581223] ------------[ cut here ]------------
  2076. [ 635.581233] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2077. [ 635.581235] Hardware name: X8ST3
  2078. [ 635.581236] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2079. [ 635.581254] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2080. [ 635.581256] Call Trace:
  2081. [ 635.581260] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2082. [ 635.581263] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2083. [ 635.581271] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2084. [ 635.581281] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2085. [ 635.581288] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2086. [ 635.581294] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2087. [ 635.581301] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2088. [ 635.581305] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2089. [ 635.581313] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2090. [ 635.581323] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2091. [ 635.581332] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2092. [ 635.581336] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2093. [ 635.581346] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2094. [ 635.581355] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2095. [ 635.581359] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2096. [ 635.581367] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2097. [ 635.581376] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2098. [ 635.581385] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2099. [ 635.581393] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2100. [ 635.581396] [<ffffffff810523e6>] kthread+0x96/0xa0
  2101. [ 635.581399] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2102. [ 635.581402] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2103. [ 635.581405] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2104. [ 635.581407] ---[ end trace 15b8c8d16278c19a ]---
  2105. [ 635.585035] ------------[ cut here ]------------
  2106. [ 635.585045] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2107. [ 635.585047] Hardware name: X8ST3
  2108. [ 635.585048] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2109. [ 635.585065] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2110. [ 635.585067] Call Trace:
  2111. [ 635.585071] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2112. [ 635.585074] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2113. [ 635.585082] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2114. [ 635.585092] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2115. [ 635.585099] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2116. [ 635.585105] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2117. [ 635.585112] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2118. [ 635.585116] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2119. [ 635.585124] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2120. [ 635.585134] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2121. [ 635.585144] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2122. [ 635.585147] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2123. [ 635.585157] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2124. [ 635.585167] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2125. [ 635.585170] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2126. [ 635.585173] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2127. [ 635.585182] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2128. [ 635.585191] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2129. [ 635.585200] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2130. [ 635.585209] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2131. [ 635.585211] [<ffffffff810523e6>] kthread+0x96/0xa0
  2132. [ 635.585215] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2133. [ 635.585217] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2134. [ 635.585220] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2135. [ 635.585222] ---[ end trace 15b8c8d16278c19b ]---
  2136. [ 635.588838] ------------[ cut here ]------------
  2137. [ 635.588848] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2138. [ 635.588850] Hardware name: X8ST3
  2139. [ 635.588851] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2140. [ 635.588868] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2141. [ 635.588870] Call Trace:
  2142. [ 635.588874] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2143. [ 635.588877] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2144. [ 635.588884] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2145. [ 635.588894] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2146. [ 635.588902] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2147. [ 635.588988] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2148. [ 635.588995] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2149. [ 635.589001] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2150. [ 635.589010] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2151. [ 635.589022] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2152. [ 635.589034] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2153. [ 635.589039] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2154. [ 635.589051] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2155. [ 635.589062] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2156. [ 635.589067] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2157. [ 635.589071] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2158. [ 635.589082] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2159. [ 635.589092] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2160. [ 635.589103] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2161. [ 635.589113] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2162. [ 635.589117] [<ffffffff810523e6>] kthread+0x96/0xa0
  2163. [ 635.589122] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2164. [ 635.589126] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2165. [ 635.589130] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2166. [ 635.589133] ---[ end trace 15b8c8d16278c19c ]---
  2167. [ 635.592570] ------------[ cut here ]------------
  2168. [ 635.592580] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2169. [ 635.592582] Hardware name: X8ST3
  2170. [ 635.592584] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2171. [ 635.592601] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2172. [ 635.592603] Call Trace:
  2173. [ 635.592607] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2174. [ 635.592611] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2175. [ 635.592618] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2176. [ 635.592628] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2177. [ 635.592635] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2178. [ 635.592642] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2179. [ 635.592648] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2180. [ 635.592652] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2181. [ 635.592660] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2182. [ 635.592670] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2183. [ 635.592679] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2184. [ 635.592683] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2185. [ 635.592693] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2186. [ 635.592702] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2187. [ 635.592706] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2188. [ 635.592715] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2189. [ 635.592723] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2190. [ 635.592732] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2191. [ 635.592741] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2192. [ 635.592744] [<ffffffff810523e6>] kthread+0x96/0xa0
  2193. [ 635.592747] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2194. [ 635.592750] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2195. [ 635.592752] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2196. [ 635.592754] ---[ end trace 15b8c8d16278c19d ]---
  2197. [ 635.596340] ------------[ cut here ]------------
  2198. [ 635.596350] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2199. [ 635.596352] Hardware name: X8ST3
  2200. [ 635.596353] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2201. [ 635.596370] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2202. [ 635.596372] Call Trace:
  2203. [ 635.596376] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2204. [ 635.596379] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2205. [ 635.596387] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2206. [ 635.596397] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2207. [ 635.596404] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2208. [ 635.596410] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2209. [ 635.596417] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2210. [ 635.596420] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2211. [ 635.596428] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2212. [ 635.596438] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2213. [ 635.596448] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2214. [ 635.596451] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2215. [ 635.596461] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2216. [ 635.596471] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2217. [ 635.596474] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2218. [ 635.596477] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2219. [ 635.596486] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2220. [ 635.596495] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2221. [ 635.596504] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2222. [ 635.596512] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2223. [ 635.596515] [<ffffffff810523e6>] kthread+0x96/0xa0
  2224. [ 635.596518] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2225. [ 635.596521] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2226. [ 635.596524] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2227. [ 635.596525] ---[ end trace 15b8c8d16278c19e ]---
  2228. [ 635.600004] ------------[ cut here ]------------
  2229. [ 635.600014] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2230. [ 635.600016] Hardware name: X8ST3
  2231. [ 635.600017] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2232. [ 635.600033] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2233. [ 635.600035] Call Trace:
  2234. [ 635.600039] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2235. [ 635.600043] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2236. [ 635.600050] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2237. [ 635.600060] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2238. [ 635.600067] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2239. [ 635.600074] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2240. [ 635.600081] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2241. [ 635.600084] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2242. [ 635.600092] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2243. [ 635.600102] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2244. [ 635.600112] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2245. [ 635.600115] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2246. [ 635.600125] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2247. [ 635.600135] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2248. [ 635.600138] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2249. [ 635.600142] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2250. [ 635.600150] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2251. [ 635.600159] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2252. [ 635.600168] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2253. [ 635.600177] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2254. [ 635.600179] [<ffffffff810523e6>] kthread+0x96/0xa0
  2255. [ 635.600183] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2256. [ 635.600186] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2257. [ 635.600188] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2258. [ 635.600190] ---[ end trace 15b8c8d16278c19f ]---
  2259. [ 635.603768] ------------[ cut here ]------------
  2260. [ 635.603777] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2261. [ 635.603780] Hardware name: X8ST3
  2262. [ 635.603781] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2263. [ 635.603797] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2264. [ 635.603799] Call Trace:
  2265. [ 635.603803] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2266. [ 635.603806] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2267. [ 635.603814] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2268. [ 635.603824] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2269. [ 635.603831] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2270. [ 635.603838] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2271. [ 635.603844] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2272. [ 635.603848] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2273. [ 635.603856] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2274. [ 635.603866] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2275. [ 635.603876] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2276. [ 635.603879] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2277. [ 635.603889] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2278. [ 635.603899] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2279. [ 635.603963] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2280. [ 635.603966] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2281. [ 635.603975] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2282. [ 635.603986] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2283. [ 635.603996] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2284. [ 635.604007] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2285. [ 635.604011] [<ffffffff810523e6>] kthread+0x96/0xa0
  2286. [ 635.604016] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2287. [ 635.604020] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2288. [ 635.604024] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2289. [ 635.604027] ---[ end trace 15b8c8d16278c1a0 ]---
  2290. [ 635.607495] ------------[ cut here ]------------
  2291. [ 635.607504] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2292. [ 635.607507] Hardware name: X8ST3
  2293. [ 635.607508] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2294. [ 635.607524] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2295. [ 635.607526] Call Trace:
  2296. [ 635.607530] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2297. [ 635.607534] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2298. [ 635.607541] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2299. [ 635.607551] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2300. [ 635.607558] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2301. [ 635.607565] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2302. [ 635.607571] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2303. [ 635.607575] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2304. [ 635.607583] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2305. [ 635.607593] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2306. [ 635.607603] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2307. [ 635.607606] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2308. [ 635.607616] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2309. [ 635.607626] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2310. [ 635.607630] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2311. [ 635.607633] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2312. [ 635.607642] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2313. [ 635.607650] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2314. [ 635.607659] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2315. [ 635.607668] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2316. [ 635.607671] [<ffffffff810523e6>] kthread+0x96/0xa0
  2317. [ 635.607674] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2318. [ 635.607677] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2319. [ 635.607679] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2320. [ 635.607681] ---[ end trace 15b8c8d16278c1a1 ]---
  2321. [ 635.611183] ------------[ cut here ]------------
  2322. [ 635.611193] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2323. [ 635.611195] Hardware name: X8ST3
  2324. [ 635.611196] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2325. [ 635.611212] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2326. [ 635.611214] Call Trace:
  2327. [ 635.611218] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2328. [ 635.611222] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2329. [ 635.611229] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2330. [ 635.611239] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2331. [ 635.611246] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2332. [ 635.611253] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2333. [ 635.611260] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2334. [ 635.611263] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2335. [ 635.611271] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2336. [ 635.611281] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2337. [ 635.611291] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2338. [ 635.611294] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2339. [ 635.611304] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2340. [ 635.611314] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2341. [ 635.611318] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2342. [ 635.611321] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2343. [ 635.611329] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2344. [ 635.611338] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2345. [ 635.611347] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2346. [ 635.611356] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2347. [ 635.611359] [<ffffffff810523e6>] kthread+0x96/0xa0
  2348. [ 635.611362] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2349. [ 635.611365] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2350. [ 635.611367] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2351. [ 635.611369] ---[ end trace 15b8c8d16278c1a2 ]---
  2352. [ 635.615132] ------------[ cut here ]------------
  2353. [ 635.615141] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2354. [ 635.615143] Hardware name: X8ST3
  2355. [ 635.615145] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2356. [ 635.615161] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2357. [ 635.615163] Call Trace:
  2358. [ 635.615167] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2359. [ 635.615171] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2360. [ 635.615178] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2361. [ 635.615188] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2362. [ 635.615195] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2363. [ 635.615202] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2364. [ 635.615208] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2365. [ 635.615212] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2366. [ 635.615220] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2367. [ 635.615230] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2368. [ 635.615239] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2369. [ 635.615243] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2370. [ 635.615253] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2371. [ 635.615262] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2372. [ 635.615266] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2373. [ 635.615269] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2374. [ 635.615278] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2375. [ 635.615286] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2376. [ 635.615295] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2377. [ 635.615304] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2378. [ 635.615307] [<ffffffff810523e6>] kthread+0x96/0xa0
  2379. [ 635.615310] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2380. [ 635.615313] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2381. [ 635.615315] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2382. [ 635.615317] ---[ end trace 15b8c8d16278c1a3 ]---
  2383. [ 635.618915] ------------[ cut here ]------------
  2384. [ 635.618925] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2385. [ 635.618927] Hardware name: X8ST3
  2386. [ 635.618928] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2387. [ 635.618944] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2388. [ 635.618947] Call Trace:
  2389. [ 635.618951] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2390. [ 635.618954] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2391. [ 635.618961] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2392. [ 635.618971] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2393. [ 635.618979] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2394. [ 635.618985] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2395. [ 635.618992] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2396. [ 635.618995] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2397. [ 635.619004] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2398. [ 635.619013] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2399. [ 635.619023] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2400. [ 635.619027] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2401. [ 635.619037] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2402. [ 635.619046] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2403. [ 635.619050] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2404. [ 635.619053] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2405. [ 635.619062] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2406. [ 635.619071] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2407. [ 635.619079] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2408. [ 635.619088] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2409. [ 635.619091] [<ffffffff810523e6>] kthread+0x96/0xa0
  2410. [ 635.619094] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2411. [ 635.619097] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2412. [ 635.619100] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2413. [ 635.619102] ---[ end trace 15b8c8d16278c1a4 ]---
  2414. [ 635.622542] ------------[ cut here ]------------
  2415. [ 635.622552] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2416. [ 635.622554] Hardware name: X8ST3
  2417. [ 635.622555] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2418. [ 635.622572] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2419. [ 635.622574] Call Trace:
  2420. [ 635.622578] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2421. [ 635.622581] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2422. [ 635.622589] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2423. [ 635.622599] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2424. [ 635.622606] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2425. [ 635.622612] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2426. [ 635.622619] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2427. [ 635.622623] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2428. [ 635.622631] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2429. [ 635.622641] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2430. [ 635.622650] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2431. [ 635.622654] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2432. [ 635.622664] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2433. [ 635.622673] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2434. [ 635.622677] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2435. [ 635.622680] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2436. [ 635.622689] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2437. [ 635.622698] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2438. [ 635.622707] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2439. [ 635.622715] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2440. [ 635.622718] [<ffffffff810523e6>] kthread+0x96/0xa0
  2441. [ 635.622721] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2442. [ 635.622724] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2443. [ 635.622727] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2444. [ 635.622729] ---[ end trace 15b8c8d16278c1a5 ]---
  2445. [ 635.626416] ------------[ cut here ]------------
  2446. [ 635.626426] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2447. [ 635.626428] Hardware name: X8ST3
  2448. [ 635.626429] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2449. [ 635.626445] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2450. [ 635.626447] Call Trace:
  2451. [ 635.626451] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2452. [ 635.626455] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2453. [ 635.626462] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2454. [ 635.626472] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2455. [ 635.626479] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2456. [ 635.626486] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2457. [ 635.626492] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2458. [ 635.626496] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2459. [ 635.626504] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2460. [ 635.626514] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2461. [ 635.626524] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2462. [ 635.626527] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2463. [ 635.626537] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2464. [ 635.626546] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2465. [ 635.626550] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2466. [ 635.626553] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2467. [ 635.626562] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2468. [ 635.626571] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2469. [ 635.626579] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2470. [ 635.626588] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2471. [ 635.626591] [<ffffffff810523e6>] kthread+0x96/0xa0
  2472. [ 635.626594] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2473. [ 635.626597] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2474. [ 635.626600] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2475. [ 635.626601] ---[ end trace 15b8c8d16278c1a6 ]---
  2476. [ 635.630417] ------------[ cut here ]------------
  2477. [ 635.630427] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2478. [ 635.630429] Hardware name: X8ST3
  2479. [ 635.630430] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2480. [ 635.630447] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2481. [ 635.630449] Call Trace:
  2482. [ 635.630453] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2483. [ 635.630456] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2484. [ 635.630464] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2485. [ 635.630473] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2486. [ 635.630481] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2487. [ 635.630487] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2488. [ 635.630494] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2489. [ 635.630497] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2490. [ 635.630506] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2491. [ 635.630515] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2492. [ 635.630525] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2493. [ 635.630529] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2494. [ 635.630539] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2495. [ 635.630548] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2496. [ 635.630552] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2497. [ 635.630555] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2498. [ 635.630564] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2499. [ 635.630572] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2500. [ 635.630581] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2501. [ 635.630590] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2502. [ 635.630593] [<ffffffff810523e6>] kthread+0x96/0xa0
  2503. [ 635.630596] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2504. [ 635.630599] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2505. [ 635.630602] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2506. [ 635.630604] ---[ end trace 15b8c8d16278c1a7 ]---
  2507. [ 635.634454] ------------[ cut here ]------------
  2508. [ 635.634464] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2509. [ 635.634466] Hardware name: X8ST3
  2510. [ 635.634467] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2511. [ 635.634484] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2512. [ 635.634486] Call Trace:
  2513. [ 635.634490] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2514. [ 635.634493] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2515. [ 635.634501] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2516. [ 635.634510] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2517. [ 635.634518] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2518. [ 635.634524] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2519. [ 635.634531] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2520. [ 635.634535] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2521. [ 635.634543] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2522. [ 635.634552] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2523. [ 635.634562] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2524. [ 635.634566] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2525. [ 635.634575] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2526. [ 635.634585] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2527. [ 635.634589] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2528. [ 635.634592] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2529. [ 635.634600] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2530. [ 635.634609] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2531. [ 635.634618] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2532. [ 635.634627] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2533. [ 635.634630] [<ffffffff810523e6>] kthread+0x96/0xa0
  2534. [ 635.634633] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2535. [ 635.634636] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2536. [ 635.634638] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2537. [ 635.634640] ---[ end trace 15b8c8d16278c1a8 ]---
  2538. [ 635.639302] ------------[ cut here ]------------
  2539. [ 635.639312] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2540. [ 635.639314] Hardware name: X8ST3
  2541. [ 635.639315] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2542. [ 635.639332] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2543. [ 635.639334] Call Trace:
  2544. [ 635.639338] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2545. [ 635.639341] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2546. [ 635.639348] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2547. [ 635.639358] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2548. [ 635.639365] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2549. [ 635.639372] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2550. [ 635.639379] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2551. [ 635.639382] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2552. [ 635.639390] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2553. [ 635.639400] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2554. [ 635.639410] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2555. [ 635.639413] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2556. [ 635.639423] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2557. [ 635.639433] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2558. [ 635.639437] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2559. [ 635.639440] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2560. [ 635.639448] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2561. [ 635.639457] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2562. [ 635.639466] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2563. [ 635.639475] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2564. [ 635.639478] [<ffffffff810523e6>] kthread+0x96/0xa0
  2565. [ 635.639481] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2566. [ 635.639484] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2567. [ 635.639486] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2568. [ 635.639488] ---[ end trace 15b8c8d16278c1a9 ]---
  2569. [ 635.643269] ------------[ cut here ]------------
  2570. [ 635.643279] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2571. [ 635.643281] Hardware name: X8ST3
  2572. [ 635.643282] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2573. [ 635.643299] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2574. [ 635.643301] Call Trace:
  2575. [ 635.643305] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2576. [ 635.643308] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2577. [ 635.643316] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2578. [ 635.643326] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2579. [ 635.643333] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2580. [ 635.643339] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2581. [ 635.643346] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2582. [ 635.643349] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2583. [ 635.643358] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2584. [ 635.643367] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2585. [ 635.643377] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2586. [ 635.643381] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2587. [ 635.643391] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2588. [ 635.643400] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2589. [ 635.643404] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2590. [ 635.643407] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2591. [ 635.643416] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2592. [ 635.643424] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2593. [ 635.643433] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2594. [ 635.643442] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2595. [ 635.643445] [<ffffffff810523e6>] kthread+0x96/0xa0
  2596. [ 635.643448] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2597. [ 635.643451] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2598. [ 635.643453] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2599. [ 635.643455] ---[ end trace 15b8c8d16278c1aa ]---
  2600. [ 635.647289] ------------[ cut here ]------------
  2601. [ 635.647298] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2602. [ 635.647301] Hardware name: X8ST3
  2603. [ 635.647302] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2604. [ 635.647318] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2605. [ 635.647320] Call Trace:
  2606. [ 635.647324] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2607. [ 635.647328] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2608. [ 635.647335] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2609. [ 635.647345] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2610. [ 635.647352] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2611. [ 635.647359] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2612. [ 635.647366] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2613. [ 635.647369] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2614. [ 635.647378] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2615. [ 635.647387] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2616. [ 635.647397] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2617. [ 635.647400] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2618. [ 635.647410] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2619. [ 635.647420] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2620. [ 635.647424] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2621. [ 635.647427] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2622. [ 635.647436] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2623. [ 635.647444] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2624. [ 635.647453] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2625. [ 635.647462] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2626. [ 635.647465] [<ffffffff810523e6>] kthread+0x96/0xa0
  2627. [ 635.647468] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2628. [ 635.647471] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2629. [ 635.647473] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2630. [ 635.647475] ---[ end trace 15b8c8d16278c1ab ]---
  2631. [ 635.651206] ------------[ cut here ]------------
  2632. [ 635.651216] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2633. [ 635.651218] Hardware name: X8ST3
  2634. [ 635.651219] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2635. [ 635.651236] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2636. [ 635.651238] Call Trace:
  2637. [ 635.651242] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2638. [ 635.651245] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2639. [ 635.651253] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2640. [ 635.651263] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2641. [ 635.651270] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2642. [ 635.651276] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2643. [ 635.651283] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2644. [ 635.651287] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2645. [ 635.651295] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2646. [ 635.651305] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2647. [ 635.651314] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2648. [ 635.651318] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2649. [ 635.651328] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2650. [ 635.651337] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2651. [ 635.651341] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2652. [ 635.651344] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2653. [ 635.651353] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2654. [ 635.651361] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2655. [ 635.651370] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2656. [ 635.651379] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2657. [ 635.651382] [<ffffffff810523e6>] kthread+0x96/0xa0
  2658. [ 635.651385] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2659. [ 635.651388] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2660. [ 635.651390] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2661. [ 635.651392] ---[ end trace 15b8c8d16278c1ac ]---
  2662. [ 635.655574] ------------[ cut here ]------------
  2663. [ 635.655584] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2664. [ 635.655586] Hardware name: X8ST3
  2665. [ 635.655587] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2666. [ 635.655604] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2667. [ 635.655606] Call Trace:
  2668. [ 635.655610] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2669. [ 635.655613] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2670. [ 635.655621] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2671. [ 635.655631] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2672. [ 635.655638] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2673. [ 635.655644] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2674. [ 635.655651] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2675. [ 635.655654] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2676. [ 635.655663] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2677. [ 635.655672] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2678. [ 635.655682] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2679. [ 635.655686] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2680. [ 635.655695] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2681. [ 635.655705] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2682. [ 635.655709] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2683. [ 635.655712] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2684. [ 635.655721] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2685. [ 635.655729] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2686. [ 635.655738] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2687. [ 635.655747] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2688. [ 635.655750] [<ffffffff810523e6>] kthread+0x96/0xa0
  2689. [ 635.655753] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2690. [ 635.655756] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2691. [ 635.655759] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2692. [ 635.655760] ---[ end trace 15b8c8d16278c1ad ]---
  2693. [ 635.659866] ------------[ cut here ]------------
  2694. [ 635.659876] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2695. [ 635.659878] Hardware name: X8ST3
  2696. [ 635.659879] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2697. [ 635.659896] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2698. [ 635.659898] Call Trace:
  2699. [ 635.659902] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2700. [ 635.659941] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2701. [ 635.659948] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2702. [ 635.659960] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2703. [ 635.659969] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2704. [ 635.659977] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2705. [ 635.659986] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2706. [ 635.659991] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2707. [ 635.660001] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2708. [ 635.660012] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2709. [ 635.660023] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2710. [ 635.660029] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2711. [ 635.660040] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2712. [ 635.660051] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2713. [ 635.660056] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2714. [ 635.660061] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2715. [ 635.660071] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2716. [ 635.660081] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2717. [ 635.660092] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2718. [ 635.660102] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2719. [ 635.660107] [<ffffffff810523e6>] kthread+0x96/0xa0
  2720. [ 635.660111] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2721. [ 635.660116] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2722. [ 635.660120] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2723. [ 635.660123] ---[ end trace 15b8c8d16278c1ae ]---
  2724. [ 635.664484] ------------[ cut here ]------------
  2725. [ 635.664494] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2726. [ 635.664496] Hardware name: X8ST3
  2727. [ 635.664497] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2728. [ 635.664513] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2729. [ 635.664515] Call Trace:
  2730. [ 635.664519] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2731. [ 635.664523] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2732. [ 635.664530] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2733. [ 635.664540] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2734. [ 635.664547] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2735. [ 635.664553] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2736. [ 635.664560] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2737. [ 635.664564] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2738. [ 635.664572] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2739. [ 635.664581] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2740. [ 635.664591] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2741. [ 635.664594] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2742. [ 635.664604] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2743. [ 635.664614] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2744. [ 635.664617] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2745. [ 635.664620] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2746. [ 635.664629] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2747. [ 635.664638] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2748. [ 635.664646] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2749. [ 635.664655] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2750. [ 635.664658] [<ffffffff810523e6>] kthread+0x96/0xa0
  2751. [ 635.664661] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2752. [ 635.664664] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2753. [ 635.664666] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2754. [ 635.664668] ---[ end trace 15b8c8d16278c1af ]---
  2755. [ 635.669375] ------------[ cut here ]------------
  2756. [ 635.669385] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2757. [ 635.669387] Hardware name: X8ST3
  2758. [ 635.669388] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2759. [ 635.669405] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2760. [ 635.669407] Call Trace:
  2761. [ 635.669411] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2762. [ 635.669414] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2763. [ 635.669422] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2764. [ 635.669431] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2765. [ 635.669439] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2766. [ 635.669445] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2767. [ 635.669452] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2768. [ 635.669456] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2769. [ 635.669464] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2770. [ 635.669474] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2771. [ 635.669483] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2772. [ 635.669487] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2773. [ 635.669497] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2774. [ 635.669507] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2775. [ 635.669510] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2776. [ 635.669513] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2777. [ 635.669522] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2778. [ 635.669531] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2779. [ 635.669540] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2780. [ 635.669549] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2781. [ 635.669551] [<ffffffff810523e6>] kthread+0x96/0xa0
  2782. [ 635.669555] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2783. [ 635.669557] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2784. [ 635.669560] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2785. [ 635.669562] ---[ end trace 15b8c8d16278c1b0 ]---
  2786. [ 635.673093] ------------[ cut here ]------------
  2787. [ 635.673103] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2788. [ 635.673105] Hardware name: X8ST3
  2789. [ 635.673106] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2790. [ 635.673122] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2791. [ 635.673124] Call Trace:
  2792. [ 635.673128] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2793. [ 635.673132] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2794. [ 635.673139] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2795. [ 635.673149] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2796. [ 635.673156] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2797. [ 635.673163] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2798. [ 635.673169] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2799. [ 635.673173] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2800. [ 635.673181] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2801. [ 635.673191] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2802. [ 635.673201] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2803. [ 635.673204] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2804. [ 635.673214] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2805. [ 635.673224] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2806. [ 635.673228] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2807. [ 635.673231] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2808. [ 635.673240] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2809. [ 635.673248] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2810. [ 635.673257] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2811. [ 635.673266] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2812. [ 635.673269] [<ffffffff810523e6>] kthread+0x96/0xa0
  2813. [ 635.673272] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2814. [ 635.673275] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2815. [ 635.673277] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2816. [ 635.673279] ---[ end trace 15b8c8d16278c1b1 ]---
  2817. [ 635.677515] ------------[ cut here ]------------
  2818. [ 635.677525] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2819. [ 635.677527] Hardware name: X8ST3
  2820. [ 635.677528] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2821. [ 635.677545] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2822. [ 635.677547] Call Trace:
  2823. [ 635.677551] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2824. [ 635.677555] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2825. [ 635.677562] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2826. [ 635.677572] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2827. [ 635.677579] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2828. [ 635.677586] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2829. [ 635.677593] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2830. [ 635.677596] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2831. [ 635.677604] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2832. [ 635.677614] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2833. [ 635.677624] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2834. [ 635.677628] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2835. [ 635.677638] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2836. [ 635.677647] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2837. [ 635.677651] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2838. [ 635.677654] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2839. [ 635.677663] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2840. [ 635.677672] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2841. [ 635.677680] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2842. [ 635.677689] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2843. [ 635.677692] [<ffffffff810523e6>] kthread+0x96/0xa0
  2844. [ 635.677695] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2845. [ 635.677698] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2846. [ 635.677701] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2847. [ 635.677703] ---[ end trace 15b8c8d16278c1b2 ]---
  2848. [ 635.681751] ------------[ cut here ]------------
  2849. [ 635.681760] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2850. [ 635.681763] Hardware name: X8ST3
  2851. [ 635.681764] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2852. [ 635.681780] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2853. [ 635.681782] Call Trace:
  2854. [ 635.681786] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2855. [ 635.681790] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2856. [ 635.681797] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2857. [ 635.681807] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2858. [ 635.681814] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2859. [ 635.681821] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2860. [ 635.681827] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2861. [ 635.681831] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2862. [ 635.681839] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2863. [ 635.681849] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2864. [ 635.681859] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2865. [ 635.681862] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2866. [ 635.681872] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2867. [ 635.681882] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2868. [ 635.681885] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2869. [ 635.681888] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2870. [ 635.681897] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2871. [ 635.681906] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2872. [ 635.681945] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2873. [ 635.681953] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2874. [ 635.681959] [<ffffffff810523e6>] kthread+0x96/0xa0
  2875. [ 635.681963] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2876. [ 635.681968] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2877. [ 635.681972] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2878. [ 635.681975] ---[ end trace 15b8c8d16278c1b3 ]---
  2879. [ 635.686380] ------------[ cut here ]------------
  2880. [ 635.686390] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2881. [ 635.686392] Hardware name: X8ST3
  2882. [ 635.686393] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2883. [ 635.686409] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2884. [ 635.686411] Call Trace:
  2885. [ 635.686415] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2886. [ 635.686418] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2887. [ 635.686426] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2888. [ 635.686436] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2889. [ 635.686443] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2890. [ 635.686449] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2891. [ 635.686456] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2892. [ 635.686460] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2893. [ 635.686468] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2894. [ 635.686478] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2895. [ 635.686487] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2896. [ 635.686491] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2897. [ 635.686501] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2898. [ 635.686510] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2899. [ 635.686514] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2900. [ 635.686517] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2901. [ 635.686525] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2902. [ 635.686534] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2903. [ 635.686543] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2904. [ 635.686551] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2905. [ 635.686554] [<ffffffff810523e6>] kthread+0x96/0xa0
  2906. [ 635.686557] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2907. [ 635.686560] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2908. [ 635.686563] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2909. [ 635.686564] ---[ end trace 15b8c8d16278c1b4 ]---
  2910. [ 635.690449] ------------[ cut here ]------------
  2911. [ 635.690460] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2912. [ 635.690462] Hardware name: X8ST3
  2913. [ 635.690463] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2914. [ 635.690481] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2915. [ 635.690483] Call Trace:
  2916. [ 635.690487] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2917. [ 635.690491] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2918. [ 635.690499] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2919. [ 635.690509] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2920. [ 635.690517] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2921. [ 635.690524] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2922. [ 635.690531] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2923. [ 635.690535] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2924. [ 635.690544] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2925. [ 635.690554] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2926. [ 635.690565] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2927. [ 635.690569] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2928. [ 635.690579] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2929. [ 635.690589] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2930. [ 635.690593] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2931. [ 635.690597] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2932. [ 635.690606] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2933. [ 635.690615] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2934. [ 635.690625] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2935. [ 635.690634] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2936. [ 635.690637] [<ffffffff810523e6>] kthread+0x96/0xa0
  2937. [ 635.690640] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2938. [ 635.690644] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2939. [ 635.690646] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2940. [ 635.690648] ---[ end trace 15b8c8d16278c1b5 ]---
  2941. [ 635.695278] ------------[ cut here ]------------
  2942. [ 635.695288] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2943. [ 635.695291] Hardware name: X8ST3
  2944. [ 635.695292] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2945. [ 635.695310] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2946. [ 635.695312] Call Trace:
  2947. [ 635.695316] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2948. [ 635.695319] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2949. [ 635.695328] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2950. [ 635.695338] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2951. [ 635.695346] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2952. [ 635.695353] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2953. [ 635.695360] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2954. [ 635.695364] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2955. [ 635.695372] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2956. [ 635.695383] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2957. [ 635.695393] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2958. [ 635.695397] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2959. [ 635.695407] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2960. [ 635.695418] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2961. [ 635.695422] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2962. [ 635.695425] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2963. [ 635.695434] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2964. [ 635.695443] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2965. [ 635.695453] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2966. [ 635.695462] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2967. [ 635.695465] [<ffffffff810523e6>] kthread+0x96/0xa0
  2968. [ 635.695468] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2969. [ 635.695471] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2970. [ 635.695474] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2971. [ 635.695476] ---[ end trace 15b8c8d16278c1b6 ]---
  2972. [ 635.700502] ------------[ cut here ]------------
  2973. [ 635.700513] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2974. [ 635.700515] Hardware name: X8ST3
  2975. [ 635.700516] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2976. [ 635.700534] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2977. [ 635.700536] Call Trace:
  2978. [ 635.700540] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2979. [ 635.700544] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2980. [ 635.700552] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2981. [ 635.700562] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2982. [ 635.700570] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  2983. [ 635.700577] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2984. [ 635.700584] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2985. [ 635.700588] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2986. [ 635.700597] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2987. [ 635.700607] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  2988. [ 635.700617] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2989. [ 635.700621] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2990. [ 635.700632] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2991. [ 635.700642] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2992. [ 635.700646] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2993. [ 635.700649] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2994. [ 635.700658] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2995. [ 635.700668] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  2996. [ 635.700677] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2997. [ 635.700686] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2998. [ 635.700690] [<ffffffff810523e6>] kthread+0x96/0xa0
  2999. [ 635.700693] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3000. [ 635.700696] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3001. [ 635.700699] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3002. [ 635.700701] ---[ end trace 15b8c8d16278c1b7 ]---
  3003. [ 635.704951] ------------[ cut here ]------------
  3004. [ 635.704961] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3005. [ 635.704963] Hardware name: X8ST3
  3006. [ 635.704965] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3007. [ 635.704982] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3008. [ 635.704984] Call Trace:
  3009. [ 635.704988] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3010. [ 635.704992] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3011. [ 635.705000] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3012. [ 635.705011] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3013. [ 635.705018] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3014. [ 635.705025] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3015. [ 635.705032] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3016. [ 635.705036] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3017. [ 635.705045] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3018. [ 635.705055] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3019. [ 635.705066] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3020. [ 635.705069] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3021. [ 635.705080] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3022. [ 635.705090] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3023. [ 635.705094] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3024. [ 635.705097] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3025. [ 635.705107] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3026. [ 635.705116] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3027. [ 635.705126] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3028. [ 635.705135] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3029. [ 635.705138] [<ffffffff810523e6>] kthread+0x96/0xa0
  3030. [ 635.705141] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3031. [ 635.705144] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3032. [ 635.705147] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3033. [ 635.705149] ---[ end trace 15b8c8d16278c1b8 ]---
  3034. [ 635.709688] ------------[ cut here ]------------
  3035. [ 635.709698] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3036. [ 635.709701] Hardware name: X8ST3
  3037. [ 635.709702] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3038. [ 635.709719] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3039. [ 635.709721] Call Trace:
  3040. [ 635.709726] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3041. [ 635.709729] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3042. [ 635.709737] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3043. [ 635.709748] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3044. [ 635.709756] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3045. [ 635.709763] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3046. [ 635.709770] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3047. [ 635.709773] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3048. [ 635.709782] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3049. [ 635.709793] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3050. [ 635.709803] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3051. [ 635.709807] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3052. [ 635.709817] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3053. [ 635.709827] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3054. [ 635.709831] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3055. [ 635.709835] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3056. [ 635.709844] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3057. [ 635.709853] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3058. [ 635.709863] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3059. [ 635.709872] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3060. [ 635.709875] [<ffffffff810523e6>] kthread+0x96/0xa0
  3061. [ 635.709878] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3062. [ 635.709881] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3063. [ 635.709884] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3064. [ 635.709886] ---[ end trace 15b8c8d16278c1b9 ]---
  3065. [ 635.714494] ------------[ cut here ]------------
  3066. [ 635.714504] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3067. [ 635.714506] Hardware name: X8ST3
  3068. [ 635.714508] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3069. [ 635.714525] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3070. [ 635.714527] Call Trace:
  3071. [ 635.714532] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3072. [ 635.714535] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3073. [ 635.714543] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3074. [ 635.714554] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3075. [ 635.714561] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3076. [ 635.714568] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3077. [ 635.714575] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3078. [ 635.714579] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3079. [ 635.714588] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3080. [ 635.714598] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3081. [ 635.714609] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3082. [ 635.714613] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3083. [ 635.714623] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3084. [ 635.714633] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3085. [ 635.714637] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3086. [ 635.714641] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3087. [ 635.714650] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3088. [ 635.714659] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3089. [ 635.714669] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3090. [ 635.714678] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3091. [ 635.714681] [<ffffffff810523e6>] kthread+0x96/0xa0
  3092. [ 635.714685] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3093. [ 635.714688] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3094. [ 635.714690] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3095. [ 635.714692] ---[ end trace 15b8c8d16278c1ba ]---
  3096. [ 635.719492] ------------[ cut here ]------------
  3097. [ 635.719502] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3098. [ 635.719504] Hardware name: X8ST3
  3099. [ 635.719506] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3100. [ 635.719523] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3101. [ 635.719525] Call Trace:
  3102. [ 635.719530] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3103. [ 635.719533] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3104. [ 635.719541] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3105. [ 635.719552] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3106. [ 635.719559] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3107. [ 635.719566] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3108. [ 635.719573] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3109. [ 635.719577] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3110. [ 635.719585] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3111. [ 635.719596] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3112. [ 635.719606] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3113. [ 635.719610] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3114. [ 635.719620] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3115. [ 635.719630] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3116. [ 635.719634] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3117. [ 635.719637] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3118. [ 635.719647] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3119. [ 635.719656] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3120. [ 635.719665] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3121. [ 635.719675] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3122. [ 635.719678] [<ffffffff810523e6>] kthread+0x96/0xa0
  3123. [ 635.719681] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3124. [ 635.719684] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3125. [ 635.719687] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3126. [ 635.719689] ---[ end trace 15b8c8d16278c1bb ]---
  3127. [ 635.724500] ------------[ cut here ]------------
  3128. [ 635.724510] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3129. [ 635.724512] Hardware name: X8ST3
  3130. [ 635.724514] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3131. [ 635.724531] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3132. [ 635.724533] Call Trace:
  3133. [ 635.724538] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3134. [ 635.724541] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3135. [ 635.724549] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3136. [ 635.724560] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3137. [ 635.724567] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3138. [ 635.724574] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3139. [ 635.724581] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3140. [ 635.724585] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3141. [ 635.724594] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3142. [ 635.724604] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3143. [ 635.724615] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3144. [ 635.724618] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3145. [ 635.724629] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3146. [ 635.724639] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3147. [ 635.724643] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3148. [ 635.724646] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3149. [ 635.724656] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3150. [ 635.724665] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3151. [ 635.724675] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3152. [ 635.724684] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3153. [ 635.724687] [<ffffffff810523e6>] kthread+0x96/0xa0
  3154. [ 635.724690] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3155. [ 635.724693] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3156. [ 635.724696] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3157. [ 635.724698] ---[ end trace 15b8c8d16278c1bc ]---
  3158. [ 635.729452] ------------[ cut here ]------------
  3159. [ 635.729462] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3160. [ 635.729464] Hardware name: X8ST3
  3161. [ 635.729465] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3162. [ 635.729483] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3163. [ 635.729485] Call Trace:
  3164. [ 635.729489] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3165. [ 635.729493] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3166. [ 635.729501] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3167. [ 635.729511] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3168. [ 635.729519] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3169. [ 635.729526] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3170. [ 635.729533] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3171. [ 635.729537] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3172. [ 635.729546] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3173. [ 635.729556] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3174. [ 635.729567] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3175. [ 635.729570] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3176. [ 635.729581] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3177. [ 635.729591] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3178. [ 635.729595] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3179. [ 635.729599] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3180. [ 635.729608] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3181. [ 635.729617] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3182. [ 635.729627] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3183. [ 635.729636] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3184. [ 635.729639] [<ffffffff810523e6>] kthread+0x96/0xa0
  3185. [ 635.729642] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3186. [ 635.729646] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3187. [ 635.729648] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3188. [ 635.729650] ---[ end trace 15b8c8d16278c1bd ]---
  3189. [ 635.734310] ------------[ cut here ]------------
  3190. [ 635.734321] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3191. [ 635.734324] Hardware name: X8ST3
  3192. [ 635.734325] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3193. [ 635.734344] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3194. [ 635.734346] Call Trace:
  3195. [ 635.734350] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3196. [ 635.734354] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3197. [ 635.734363] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3198. [ 635.734374] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3199. [ 635.734382] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3200. [ 635.734389] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3201. [ 635.734397] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3202. [ 635.734401] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3203. [ 635.734410] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3204. [ 635.734421] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3205. [ 635.734432] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3206. [ 635.734436] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3207. [ 635.734448] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3208. [ 635.734458] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3209. [ 635.734462] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3210. [ 635.734466] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3211. [ 635.734476] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3212. [ 635.734486] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3213. [ 635.734496] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3214. [ 635.734506] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3215. [ 635.734509] [<ffffffff810523e6>] kthread+0x96/0xa0
  3216. [ 635.734512] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3217. [ 635.734516] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3218. [ 635.734518] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3219. [ 635.734521] ---[ end trace 15b8c8d16278c1be ]---
  3220. [ 635.738674] ------------[ cut here ]------------
  3221. [ 635.738685] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3222. [ 635.738688] Hardware name: X8ST3
  3223. [ 635.738689] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3224. [ 635.738708] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3225. [ 635.738710] Call Trace:
  3226. [ 635.738715] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3227. [ 635.738719] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3228. [ 635.738727] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3229. [ 635.738739] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3230. [ 635.738747] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3231. [ 635.738754] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3232. [ 635.738762] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3233. [ 635.738766] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3234. [ 635.738775] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3235. [ 635.738787] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3236. [ 635.738798] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3237. [ 635.738802] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3238. [ 635.738813] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3239. [ 635.738824] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3240. [ 635.738828] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3241. [ 635.738832] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3242. [ 635.738842] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3243. [ 635.738852] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3244. [ 635.738862] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3245. [ 635.738872] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3246. [ 635.738875] [<ffffffff810523e6>] kthread+0x96/0xa0
  3247. [ 635.738879] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3248. [ 635.738882] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3249. [ 635.738885] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3250. [ 635.738887] ---[ end trace 15b8c8d16278c1bf ]---
  3251. [ 635.743638] ------------[ cut here ]------------
  3252. [ 635.743649] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3253. [ 635.743651] Hardware name: X8ST3
  3254. [ 635.743653] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3255. [ 635.743671] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3256. [ 635.743673] Call Trace:
  3257. [ 635.743678] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3258. [ 635.743682] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3259. [ 635.743690] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3260. [ 635.743702] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3261. [ 635.743710] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3262. [ 635.743717] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3263. [ 635.743725] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3264. [ 635.743729] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3265. [ 635.743738] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3266. [ 635.743750] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3267. [ 635.743761] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3268. [ 635.743765] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3269. [ 635.743776] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3270. [ 635.743787] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3271. [ 635.743791] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3272. [ 635.743795] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3273. [ 635.743805] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3274. [ 635.743815] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3275. [ 635.743825] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3276. [ 635.743835] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3277. [ 635.743838] [<ffffffff810523e6>] kthread+0x96/0xa0
  3278. [ 635.743841] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3279. [ 635.743845] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3280. [ 635.743848] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3281. [ 635.743850] ---[ end trace 15b8c8d16278c1c0 ]---
  3282. [ 635.748362] ------------[ cut here ]------------
  3283. [ 635.748372] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3284. [ 635.748375] Hardware name: X8ST3
  3285. [ 635.748376] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3286. [ 635.748395] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3287. [ 635.748397] Call Trace:
  3288. [ 635.748402] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3289. [ 635.748406] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3290. [ 635.748414] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3291. [ 635.748425] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3292. [ 635.748434] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3293. [ 635.748441] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3294. [ 635.748449] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3295. [ 635.748453] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3296. [ 635.748462] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3297. [ 635.748473] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3298. [ 635.748484] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3299. [ 635.748488] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3300. [ 635.748499] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3301. [ 635.748510] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3302. [ 635.748515] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3303. [ 635.748518] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3304. [ 635.748528] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3305. [ 635.748538] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3306. [ 635.748548] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3307. [ 635.748558] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3308. [ 635.748562] [<ffffffff810523e6>] kthread+0x96/0xa0
  3309. [ 635.748565] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3310. [ 635.748568] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3311. [ 635.748571] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3312. [ 635.748573] ---[ end trace 15b8c8d16278c1c1 ]---
  3313. [ 635.752730] ------------[ cut here ]------------
  3314. [ 635.752741] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3315. [ 635.752743] Hardware name: X8ST3
  3316. [ 635.752744] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3317. [ 635.752763] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3318. [ 635.752765] Call Trace:
  3319. [ 635.752770] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3320. [ 635.752773] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3321. [ 635.752782] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3322. [ 635.752793] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3323. [ 635.752801] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3324. [ 635.752809] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3325. [ 635.752816] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3326. [ 635.752820] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3327. [ 635.752830] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3328. [ 635.752841] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3329. [ 635.752852] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3330. [ 635.752856] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3331. [ 635.752867] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3332. [ 635.752878] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3333. [ 635.752882] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3334. [ 635.752885] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3335. [ 635.752895] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3336. [ 635.752905] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3337. [ 635.752952] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3338. [ 635.752965] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3339. [ 635.752971] [<ffffffff810523e6>] kthread+0x96/0xa0
  3340. [ 635.752976] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3341. [ 635.752981] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3342. [ 635.752985] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3343. [ 635.752989] ---[ end trace 15b8c8d16278c1c2 ]---
  3344. [ 635.757531] ------------[ cut here ]------------
  3345. [ 635.757542] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3346. [ 635.757545] Hardware name: X8ST3
  3347. [ 635.757546] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3348. [ 635.757565] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3349. [ 635.757567] Call Trace:
  3350. [ 635.757571] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3351. [ 635.757575] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3352. [ 635.757584] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3353. [ 635.757595] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3354. [ 635.757603] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3355. [ 635.757610] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3356. [ 635.757618] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3357. [ 635.757622] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3358. [ 635.757631] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3359. [ 635.757642] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3360. [ 635.757653] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3361. [ 635.757657] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3362. [ 635.757668] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3363. [ 635.757679] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3364. [ 635.757683] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3365. [ 635.757687] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3366. [ 635.757697] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3367. [ 635.757707] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3368. [ 635.757717] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3369. [ 635.757727] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3370. [ 635.757730] [<ffffffff810523e6>] kthread+0x96/0xa0
  3371. [ 635.757733] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3372. [ 635.757737] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3373. [ 635.757739] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3374. [ 635.757742] ---[ end trace 15b8c8d16278c1c3 ]---
  3375. [ 635.762416] ------------[ cut here ]------------
  3376. [ 635.762426] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3377. [ 635.762429] Hardware name: X8ST3
  3378. [ 635.762430] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3379. [ 635.762449] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3380. [ 635.762451] Call Trace:
  3381. [ 635.762456] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3382. [ 635.762459] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3383. [ 635.762468] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3384. [ 635.762479] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3385. [ 635.762487] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3386. [ 635.762495] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3387. [ 635.762502] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3388. [ 635.762507] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3389. [ 635.762516] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3390. [ 635.762527] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3391. [ 635.762538] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3392. [ 635.762542] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3393. [ 635.762554] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3394. [ 635.762565] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3395. [ 635.762569] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3396. [ 635.762572] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3397. [ 635.762583] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3398. [ 635.762592] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3399. [ 635.762603] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3400. [ 635.762613] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3401. [ 635.762616] [<ffffffff810523e6>] kthread+0x96/0xa0
  3402. [ 635.762619] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3403. [ 635.762623] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3404. [ 635.762626] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3405. [ 635.762628] ---[ end trace 15b8c8d16278c1c4 ]---
  3406. [ 635.767400] ------------[ cut here ]------------
  3407. [ 635.767411] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3408. [ 635.767414] Hardware name: X8ST3
  3409. [ 635.767415] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3410. [ 635.767434] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3411. [ 635.767436] Call Trace:
  3412. [ 635.767440] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3413. [ 635.767444] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3414. [ 635.767453] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3415. [ 635.767464] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3416. [ 635.767472] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3417. [ 635.767480] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3418. [ 635.767487] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3419. [ 635.767492] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3420. [ 635.767501] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3421. [ 635.767512] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3422. [ 635.767523] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3423. [ 635.767527] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3424. [ 635.767538] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3425. [ 635.767549] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3426. [ 635.767553] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3427. [ 635.767557] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3428. [ 635.767567] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3429. [ 635.767577] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3430. [ 635.767587] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3431. [ 635.767597] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3432. [ 635.767600] [<ffffffff810523e6>] kthread+0x96/0xa0
  3433. [ 635.767604] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3434. [ 635.767607] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3435. [ 635.767610] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3436. [ 635.767612] ---[ end trace 15b8c8d16278c1c5 ]---
  3437. [ 635.772517] ------------[ cut here ]------------
  3438. [ 635.772528] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3439. [ 635.772530] Hardware name: X8ST3
  3440. [ 635.772532] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3441. [ 635.772550] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3442. [ 635.772553] Call Trace:
  3443. [ 635.772557] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3444. [ 635.772561] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3445. [ 635.772570] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3446. [ 635.772581] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3447. [ 635.772589] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3448. [ 635.772597] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3449. [ 635.772604] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3450. [ 635.772608] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3451. [ 635.772618] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3452. [ 635.772629] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3453. [ 635.772640] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3454. [ 635.772644] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3455. [ 635.772655] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3456. [ 635.772666] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3457. [ 635.772670] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3458. [ 635.772674] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3459. [ 635.772684] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3460. [ 635.772694] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3461. [ 635.772704] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3462. [ 635.772714] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3463. [ 635.772717] [<ffffffff810523e6>] kthread+0x96/0xa0
  3464. [ 635.772721] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3465. [ 635.772724] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3466. [ 635.772727] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3467. [ 635.772729] ---[ end trace 15b8c8d16278c1c6 ]---
  3468. [ 635.777316] ------------[ cut here ]------------
  3469. [ 635.777326] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3470. [ 635.777329] Hardware name: X8ST3
  3471. [ 635.777330] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3472. [ 635.777349] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3473. [ 635.777351] Call Trace:
  3474. [ 635.777356] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3475. [ 635.777359] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3476. [ 635.777368] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3477. [ 635.777379] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3478. [ 635.777388] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3479. [ 635.777395] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3480. [ 635.777403] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3481. [ 635.777407] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3482. [ 635.777416] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3483. [ 635.777427] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3484. [ 635.777438] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3485. [ 635.777442] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3486. [ 635.777454] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3487. [ 635.777465] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3488. [ 635.777469] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3489. [ 635.777472] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3490. [ 635.777482] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3491. [ 635.777492] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3492. [ 635.777502] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3493. [ 635.777513] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3494. [ 635.777516] [<ffffffff810523e6>] kthread+0x96/0xa0
  3495. [ 635.777519] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3496. [ 635.777523] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3497. [ 635.777526] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3498. [ 635.777528] ---[ end trace 15b8c8d16278c1c7 ]---
  3499. [ 635.781576] ------------[ cut here ]------------
  3500. [ 635.781587] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3501. [ 635.781589] Hardware name: X8ST3
  3502. [ 635.781591] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3503. [ 635.781609] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3504. [ 635.781612] Call Trace:
  3505. [ 635.781616] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3506. [ 635.781620] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3507. [ 635.781629] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3508. [ 635.781640] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3509. [ 635.781648] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3510. [ 635.781655] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3511. [ 635.781663] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3512. [ 635.781667] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3513. [ 635.781676] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3514. [ 635.781687] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3515. [ 635.781699] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3516. [ 635.781703] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3517. [ 635.781714] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3518. [ 635.781725] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3519. [ 635.781729] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3520. [ 635.781732] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3521. [ 635.781742] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3522. [ 635.781752] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3523. [ 635.781762] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3524. [ 635.781772] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3525. [ 635.781776] [<ffffffff810523e6>] kthread+0x96/0xa0
  3526. [ 635.781779] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3527. [ 635.781783] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3528. [ 635.781785] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3529. [ 635.781788] ---[ end trace 15b8c8d16278c1c8 ]---
  3530. [ 635.786265] ------------[ cut here ]------------
  3531. [ 635.786276] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3532. [ 635.786278] Hardware name: X8ST3
  3533. [ 635.786280] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3534. [ 635.786298] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3535. [ 635.786301] Call Trace:
  3536. [ 635.786305] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3537. [ 635.786309] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3538. [ 635.786318] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3539. [ 635.786329] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3540. [ 635.786337] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3541. [ 635.786345] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3542. [ 635.786352] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3543. [ 635.786356] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3544. [ 635.786366] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3545. [ 635.786377] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3546. [ 635.786388] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3547. [ 635.786392] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3548. [ 635.786403] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3549. [ 635.786414] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3550. [ 635.786418] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3551. [ 635.786422] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3552. [ 635.786432] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3553. [ 635.786442] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3554. [ 635.786452] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3555. [ 635.786462] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3556. [ 635.786465] [<ffffffff810523e6>] kthread+0x96/0xa0
  3557. [ 635.786469] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3558. [ 635.786472] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3559. [ 635.786475] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3560. [ 635.786477] ---[ end trace 15b8c8d16278c1c9 ]---
  3561. [ 635.790269] ------------[ cut here ]------------
  3562. [ 635.790280] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3563. [ 635.790283] Hardware name: X8ST3
  3564. [ 635.790284] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3565. [ 635.790303] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3566. [ 635.790305] Call Trace:
  3567. [ 635.790309] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3568. [ 635.790313] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3569. [ 635.790322] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3570. [ 635.790333] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3571. [ 635.790341] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3572. [ 635.790349] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3573. [ 635.790356] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3574. [ 635.790360] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3575. [ 635.790370] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3576. [ 635.790381] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3577. [ 635.790392] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3578. [ 635.790396] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3579. [ 635.790407] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3580. [ 635.790418] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3581. [ 635.790422] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3582. [ 635.790426] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3583. [ 635.790436] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3584. [ 635.790446] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3585. [ 635.790456] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3586. [ 635.790466] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3587. [ 635.790469] [<ffffffff810523e6>] kthread+0x96/0xa0
  3588. [ 635.790473] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3589. [ 635.790476] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3590. [ 635.790479] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3591. [ 635.790481] ---[ end trace 15b8c8d16278c1ca ]---
  3592. [ 635.794410] ------------[ cut here ]------------
  3593. [ 635.794421] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3594. [ 635.794423] Hardware name: X8ST3
  3595. [ 635.794424] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3596. [ 635.794443] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3597. [ 635.794445] Call Trace:
  3598. [ 635.794450] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3599. [ 635.794454] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3600. [ 635.794462] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3601. [ 635.794474] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3602. [ 635.794482] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3603. [ 635.794489] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3604. [ 635.794497] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3605. [ 635.794501] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3606. [ 635.794510] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3607. [ 635.794521] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3608. [ 635.794533] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3609. [ 635.794537] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3610. [ 635.794548] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3611. [ 635.794559] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3612. [ 635.794563] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3613. [ 635.794567] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3614. [ 635.794577] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3615. [ 635.794587] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3616. [ 635.794597] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3617. [ 635.794607] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3618. [ 635.794610] [<ffffffff810523e6>] kthread+0x96/0xa0
  3619. [ 635.794614] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3620. [ 635.794617] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3621. [ 635.794620] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3622. [ 635.794622] ---[ end trace 15b8c8d16278c1cb ]---
  3623. [ 635.798935] ------------[ cut here ]------------
  3624. [ 635.798946] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3625. [ 635.798949] Hardware name: X8ST3
  3626. [ 635.798950] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3627. [ 635.798969] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3628. [ 635.798971] Call Trace:
  3629. [ 635.798976] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3630. [ 635.798979] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3631. [ 635.798988] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3632. [ 635.798999] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3633. [ 635.799008] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3634. [ 635.799015] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3635. [ 635.799023] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3636. [ 635.799027] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3637. [ 635.799036] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3638. [ 635.799047] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3639. [ 635.799058] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3640. [ 635.799062] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3641. [ 635.799073] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3642. [ 635.799084] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3643. [ 635.799089] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3644. [ 635.799092] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3645. [ 635.799102] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3646. [ 635.799112] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3647. [ 635.799122] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3648. [ 635.799132] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3649. [ 635.799135] [<ffffffff810523e6>] kthread+0x96/0xa0
  3650. [ 635.799139] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3651. [ 635.799142] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3652. [ 635.799145] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3653. [ 635.799147] ---[ end trace 15b8c8d16278c1cc ]---
  3654. [ 635.803659] ------------[ cut here ]------------
  3655. [ 635.803670] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3656. [ 635.803672] Hardware name: X8ST3
  3657. [ 635.803674] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3658. [ 635.803693] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3659. [ 635.803695] Call Trace:
  3660. [ 635.803699] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3661. [ 635.803703] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3662. [ 635.803712] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3663. [ 635.803723] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3664. [ 635.803731] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3665. [ 635.803739] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3666. [ 635.803746] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3667. [ 635.803751] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3668. [ 635.803760] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3669. [ 635.803771] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3670. [ 635.803782] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3671. [ 635.803786] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3672. [ 635.803798] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3673. [ 635.803809] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3674. [ 635.803813] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3675. [ 635.803816] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3676. [ 635.803826] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3677. [ 635.803836] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3678. [ 635.803846] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3679. [ 635.803857] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3680. [ 635.803860] [<ffffffff810523e6>] kthread+0x96/0xa0
  3681. [ 635.803863] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3682. [ 635.803867] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3683. [ 635.803870] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3684. [ 635.803872] ---[ end trace 15b8c8d16278c1cd ]---
  3685. [ 635.808534] ------------[ cut here ]------------
  3686. [ 635.808544] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3687. [ 635.808547] Hardware name: X8ST3
  3688. [ 635.808548] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3689. [ 635.808567] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3690. [ 635.808569] Call Trace:
  3691. [ 635.808574] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3692. [ 635.808578] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3693. [ 635.808586] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3694. [ 635.808597] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3695. [ 635.808606] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3696. [ 635.808613] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3697. [ 635.808621] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3698. [ 635.808625] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3699. [ 635.808634] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3700. [ 635.808645] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3701. [ 635.808657] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3702. [ 635.808661] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3703. [ 635.808672] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3704. [ 635.808683] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3705. [ 635.808687] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3706. [ 635.808691] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3707. [ 635.808701] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3708. [ 635.808710] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3709. [ 635.808721] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3710. [ 635.808731] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3711. [ 635.808734] [<ffffffff810523e6>] kthread+0x96/0xa0
  3712. [ 635.808737] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3713. [ 635.808741] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3714. [ 635.808744] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3715. [ 635.808746] ---[ end trace 15b8c8d16278c1ce ]---
  3716. [ 635.813229] ------------[ cut here ]------------
  3717. [ 635.813240] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3718. [ 635.813242] Hardware name: X8ST3
  3719. [ 635.813243] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3720. [ 635.813262] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3721. [ 635.813264] Call Trace:
  3722. [ 635.813269] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3723. [ 635.813273] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3724. [ 635.813281] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3725. [ 635.813292] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3726. [ 635.813301] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3727. [ 635.813308] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3728. [ 635.813316] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3729. [ 635.813320] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3730. [ 635.813329] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3731. [ 635.813340] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3732. [ 635.813351] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3733. [ 635.813355] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3734. [ 635.813367] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3735. [ 635.813378] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3736. [ 635.813382] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3737. [ 635.813385] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3738. [ 635.813396] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3739. [ 635.813406] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3740. [ 635.813416] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3741. [ 635.813426] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3742. [ 635.813429] [<ffffffff810523e6>] kthread+0x96/0xa0
  3743. [ 635.813432] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3744. [ 635.813436] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3745. [ 635.813439] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3746. [ 635.813441] ---[ end trace 15b8c8d16278c1cf ]---
  3747. [ 635.817486] ------------[ cut here ]------------
  3748. [ 635.817496] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3749. [ 635.817499] Hardware name: X8ST3
  3750. [ 635.817500] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3751. [ 635.817519] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3752. [ 635.817521] Call Trace:
  3753. [ 635.817526] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3754. [ 635.817530] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3755. [ 635.817538] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3756. [ 635.817550] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3757. [ 635.817558] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3758. [ 635.817565] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3759. [ 635.817573] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3760. [ 635.817577] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3761. [ 635.817586] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3762. [ 635.817598] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3763. [ 635.817609] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3764. [ 635.817613] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3765. [ 635.817624] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3766. [ 635.817635] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3767. [ 635.817639] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3768. [ 635.817643] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3769. [ 635.817653] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3770. [ 635.817663] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3771. [ 635.817673] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3772. [ 635.817683] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3773. [ 635.817686] [<ffffffff810523e6>] kthread+0x96/0xa0
  3774. [ 635.817690] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3775. [ 635.817693] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3776. [ 635.817696] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3777. [ 635.817699] ---[ end trace 15b8c8d16278c1d0 ]---
  3778. [ 635.822298] ------------[ cut here ]------------
  3779. [ 635.822308] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3780. [ 635.822311] Hardware name: X8ST3
  3781. [ 635.822312] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3782. [ 635.822331] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3783. [ 635.822333] Call Trace:
  3784. [ 635.822337] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3785. [ 635.822341] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3786. [ 635.822350] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3787. [ 635.822361] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3788. [ 635.822369] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3789. [ 635.822377] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3790. [ 635.822384] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3791. [ 635.822389] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3792. [ 635.822398] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3793. [ 635.822409] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3794. [ 635.822420] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3795. [ 635.822424] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3796. [ 635.822436] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3797. [ 635.822447] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3798. [ 635.822451] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3799. [ 635.822454] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3800. [ 635.822465] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3801. [ 635.822474] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3802. [ 635.822485] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3803. [ 635.822495] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3804. [ 635.822498] [<ffffffff810523e6>] kthread+0x96/0xa0
  3805. [ 635.822501] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3806. [ 635.822505] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3807. [ 635.822508] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3808. [ 635.822510] ---[ end trace 15b8c8d16278c1d1 ]---
  3809. [ 635.826684] ------------[ cut here ]------------
  3810. [ 635.826695] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3811. [ 635.826697] Hardware name: X8ST3
  3812. [ 635.826699] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3813. [ 635.826717] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3814. [ 635.826720] Call Trace:
  3815. [ 635.826724] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3816. [ 635.826728] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3817. [ 635.826737] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3818. [ 635.826748] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3819. [ 635.826756] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3820. [ 635.826764] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3821. [ 635.826771] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3822. [ 635.826775] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3823. [ 635.826785] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3824. [ 635.826796] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3825. [ 635.826807] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3826. [ 635.826811] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3827. [ 635.826822] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3828. [ 635.826833] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3829. [ 635.826837] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3830. [ 635.826841] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3831. [ 635.826851] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3832. [ 635.826861] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3833. [ 635.826871] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3834. [ 635.826881] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3835. [ 635.826884] [<ffffffff810523e6>] kthread+0x96/0xa0
  3836. [ 635.826887] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3837. [ 635.826891] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3838. [ 635.826894] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3839. [ 635.826896] ---[ end trace 15b8c8d16278c1d2 ]---
  3840. [ 635.830700] ------------[ cut here ]------------
  3841. [ 635.830711] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3842. [ 635.830714] Hardware name: X8ST3
  3843. [ 635.830715] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3844. [ 635.830734] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3845. [ 635.830736] Call Trace:
  3846. [ 635.830741] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3847. [ 635.830744] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3848. [ 635.830753] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3849. [ 635.830764] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3850. [ 635.830773] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3851. [ 635.830780] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3852. [ 635.830788] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3853. [ 635.830792] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3854. [ 635.830801] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3855. [ 635.830812] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3856. [ 635.830823] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3857. [ 635.830827] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3858. [ 635.830839] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3859. [ 635.830850] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3860. [ 635.830854] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3861. [ 635.830858] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3862. [ 635.830868] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3863. [ 635.830877] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3864. [ 635.830888] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3865. [ 635.830898] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3866. [ 635.830901] [<ffffffff810523e6>] kthread+0x96/0xa0
  3867. [ 635.830904] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3868. [ 635.830948] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3869. [ 635.830951] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3870. [ 635.830954] ---[ end trace 15b8c8d16278c1d3 ]---
  3871. [ 635.834719] ------------[ cut here ]------------
  3872. [ 635.834730] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3873. [ 635.834733] Hardware name: X8ST3
  3874. [ 635.834734] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3875. [ 635.834753] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3876. [ 635.834755] Call Trace:
  3877. [ 635.834759] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3878. [ 635.834763] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3879. [ 635.834772] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3880. [ 635.834783] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3881. [ 635.834791] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3882. [ 635.834799] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3883. [ 635.834806] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3884. [ 635.834810] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3885. [ 635.834820] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3886. [ 635.834831] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3887. [ 635.834842] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3888. [ 635.834846] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3889. [ 635.834857] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3890. [ 635.834868] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3891. [ 635.834872] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3892. [ 635.834876] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3893. [ 635.834886] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3894. [ 635.834896] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3895. [ 635.834906] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3896. [ 635.834954] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3897. [ 635.834960] [<ffffffff810523e6>] kthread+0x96/0xa0
  3898. [ 635.834965] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3899. [ 635.834971] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3900. [ 635.834976] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3901. [ 635.834980] ---[ end trace 15b8c8d16278c1d4 ]---
  3902. [ 635.838943] ------------[ cut here ]------------
  3903. [ 635.838954] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3904. [ 635.838957] Hardware name: X8ST3
  3905. [ 635.838958] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3906. [ 635.838977] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3907. [ 635.838979] Call Trace:
  3908. [ 635.838983] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3909. [ 635.838987] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3910. [ 635.838996] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3911. [ 635.839007] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3912. [ 635.839015] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3913. [ 635.839022] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3914. [ 635.839030] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3915. [ 635.839034] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3916. [ 635.839043] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3917. [ 635.839054] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3918. [ 635.839065] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3919. [ 635.839069] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3920. [ 635.839081] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3921. [ 635.839091] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3922. [ 635.839096] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3923. [ 635.839099] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3924. [ 635.839109] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3925. [ 635.839119] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3926. [ 635.839129] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3927. [ 635.839139] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3928. [ 635.839142] [<ffffffff810523e6>] kthread+0x96/0xa0
  3929. [ 635.839145] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3930. [ 635.839149] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3931. [ 635.839152] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3932. [ 635.839154] ---[ end trace 15b8c8d16278c1d5 ]---
  3933. [ 635.843517] ------------[ cut here ]------------
  3934. [ 635.843527] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3935. [ 635.843529] Hardware name: X8ST3
  3936. [ 635.843530] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3937. [ 635.843546] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3938. [ 635.843548] Call Trace:
  3939. [ 635.843552] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3940. [ 635.843556] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3941. [ 635.843563] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3942. [ 635.843573] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3943. [ 635.843580] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3944. [ 635.843587] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3945. [ 635.843593] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3946. [ 635.843597] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3947. [ 635.843605] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3948. [ 635.843615] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3949. [ 635.843625] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3950. [ 635.843628] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3951. [ 635.843638] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3952. [ 635.843648] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3953. [ 635.843651] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3954. [ 635.843654] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3955. [ 635.843663] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3956. [ 635.843672] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3957. [ 635.843681] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3958. [ 635.843690] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3959. [ 635.843693] [<ffffffff810523e6>] kthread+0x96/0xa0
  3960. [ 635.843696] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3961. [ 635.843698] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3962. [ 635.843701] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3963. [ 635.843703] ---[ end trace 15b8c8d16278c1d6 ]---
  3964. [ 635.847760] ------------[ cut here ]------------
  3965. [ 635.847769] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3966. [ 635.847771] Hardware name: X8ST3
  3967. [ 635.847773] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3968. [ 635.847789] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3969. [ 635.847791] Call Trace:
  3970. [ 635.847795] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3971. [ 635.847798] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3972. [ 635.847806] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3973. [ 635.847816] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3974. [ 635.847823] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  3975. [ 635.847829] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3976. [ 635.847836] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3977. [ 635.847840] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3978. [ 635.847848] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3979. [ 635.847858] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  3980. [ 635.847867] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3981. [ 635.847871] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3982. [ 635.847881] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3983. [ 635.847890] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3984. [ 635.847894] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3985. [ 635.847897] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3986. [ 635.847906] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3987. [ 635.847954] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  3988. [ 635.847965] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3989. [ 635.847976] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3990. [ 635.847980] [<ffffffff810523e6>] kthread+0x96/0xa0
  3991. [ 635.847985] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3992. [ 635.847990] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3993. [ 635.847994] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3994. [ 635.847997] ---[ end trace 15b8c8d16278c1d7 ]---
  3995. [ 635.852619] ------------[ cut here ]------------
  3996. [ 635.852629] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3997. [ 635.852631] Hardware name: X8ST3
  3998. [ 635.852632] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3999. [ 635.852650] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4000. [ 635.852652] Call Trace:
  4001. [ 635.852656] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4002. [ 635.852659] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4003. [ 635.852667] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4004. [ 635.852678] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4005. [ 635.852686] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4006. [ 635.852692] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4007. [ 635.852699] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4008. [ 635.852703] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4009. [ 635.852712] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4010. [ 635.852722] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4011. [ 635.852733] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4012. [ 635.852736] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4013. [ 635.852747] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4014. [ 635.852757] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4015. [ 635.852761] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4016. [ 635.852764] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4017. [ 635.852773] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4018. [ 635.852783] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4019. [ 635.852792] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4020. [ 635.852801] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4021. [ 635.852804] [<ffffffff810523e6>] kthread+0x96/0xa0
  4022. [ 635.852807] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4023. [ 635.852810] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4024. [ 635.852813] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4025. [ 635.852815] ---[ end trace 15b8c8d16278c1d8 ]---
  4026. [ 635.857300] ------------[ cut here ]------------
  4027. [ 635.857310] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4028. [ 635.857313] Hardware name: X8ST3
  4029. [ 635.857314] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4030. [ 635.857331] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4031. [ 635.857333] Call Trace:
  4032. [ 635.857338] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4033. [ 635.857341] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4034. [ 635.857349] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4035. [ 635.857359] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4036. [ 635.857367] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4037. [ 635.857374] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4038. [ 635.857381] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4039. [ 635.857385] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4040. [ 635.857394] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4041. [ 635.857404] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4042. [ 635.857414] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4043. [ 635.857418] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4044. [ 635.857429] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4045. [ 635.857439] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4046. [ 635.857443] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4047. [ 635.857446] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4048. [ 635.857455] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4049. [ 635.857465] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4050. [ 635.857474] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4051. [ 635.857483] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4052. [ 635.857486] [<ffffffff810523e6>] kthread+0x96/0xa0
  4053. [ 635.857490] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4054. [ 635.857493] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4055. [ 635.857495] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4056. [ 635.857497] ---[ end trace 15b8c8d16278c1d9 ]---
  4057. [ 635.861402] ------------[ cut here ]------------
  4058. [ 635.861413] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4059. [ 635.861415] Hardware name: X8ST3
  4060. [ 635.861416] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4061. [ 635.861434] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4062. [ 635.861436] Call Trace:
  4063. [ 635.861440] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4064. [ 635.861444] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4065. [ 635.861452] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4066. [ 635.861462] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4067. [ 635.861470] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4068. [ 635.861477] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4069. [ 635.861484] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4070. [ 635.861488] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4071. [ 635.861497] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4072. [ 635.861507] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4073. [ 635.861517] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4074. [ 635.861521] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4075. [ 635.861532] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4076. [ 635.861542] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4077. [ 635.861546] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4078. [ 635.861549] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4079. [ 635.861559] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4080. [ 635.861568] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4081. [ 635.861577] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4082. [ 635.861587] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4083. [ 635.861590] [<ffffffff810523e6>] kthread+0x96/0xa0
  4084. [ 635.861593] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4085. [ 635.861596] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4086. [ 635.861599] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4087. [ 635.861601] ---[ end trace 15b8c8d16278c1da ]---
  4088. [ 635.865720] ------------[ cut here ]------------
  4089. [ 635.865730] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4090. [ 635.865732] Hardware name: X8ST3
  4091. [ 635.865733] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4092. [ 635.865751] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4093. [ 635.865753] Call Trace:
  4094. [ 635.865757] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4095. [ 635.865761] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4096. [ 635.865769] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4097. [ 635.865779] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4098. [ 635.865787] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4099. [ 635.865794] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4100. [ 635.865801] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4101. [ 635.865805] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4102. [ 635.865813] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4103. [ 635.865824] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4104. [ 635.865834] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4105. [ 635.865838] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4106. [ 635.865848] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4107. [ 635.865859] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4108. [ 635.865862] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4109. [ 635.865866] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4110. [ 635.865875] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4111. [ 635.865884] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4112. [ 635.865894] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4113. [ 635.865903] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4114. [ 635.865906] [<ffffffff810523e6>] kthread+0x96/0xa0
  4115. [ 635.865947] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4116. [ 635.865950] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4117. [ 635.865953] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4118. [ 635.865956] ---[ end trace 15b8c8d16278c1db ]---
  4119. [ 635.870371] ------------[ cut here ]------------
  4120. [ 635.870381] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4121. [ 635.870384] Hardware name: X8ST3
  4122. [ 635.870385] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4123. [ 635.870402] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4124. [ 635.870404] Call Trace:
  4125. [ 635.870409] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4126. [ 635.870412] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4127. [ 635.870420] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4128. [ 635.870431] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4129. [ 635.870438] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4130. [ 635.870445] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4131. [ 635.870452] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4132. [ 635.870456] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4133. [ 635.870465] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4134. [ 635.870475] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4135. [ 635.870485] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4136. [ 635.870489] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4137. [ 635.870500] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4138. [ 635.870510] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4139. [ 635.870514] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4140. [ 635.870517] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4141. [ 635.870526] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4142. [ 635.870535] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4143. [ 635.870545] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4144. [ 635.870554] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4145. [ 635.870557] [<ffffffff810523e6>] kthread+0x96/0xa0
  4146. [ 635.870560] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4147. [ 635.870563] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4148. [ 635.870566] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4149. [ 635.870568] ---[ end trace 15b8c8d16278c1dc ]---
  4150. [ 635.874406] ------------[ cut here ]------------
  4151. [ 635.874416] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4152. [ 635.874418] Hardware name: X8ST3
  4153. [ 635.874419] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4154. [ 635.874437] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4155. [ 635.874439] Call Trace:
  4156. [ 635.874443] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4157. [ 635.874447] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4158. [ 635.874455] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4159. [ 635.874465] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4160. [ 635.874473] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4161. [ 635.874480] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4162. [ 635.874487] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4163. [ 635.874491] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4164. [ 635.874500] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4165. [ 635.874510] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4166. [ 635.874520] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4167. [ 635.874524] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4168. [ 635.874535] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4169. [ 635.874545] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4170. [ 635.874549] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4171. [ 635.874552] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4172. [ 635.874562] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4173. [ 635.874571] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4174. [ 635.874580] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4175. [ 635.874590] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4176. [ 635.874593] [<ffffffff810523e6>] kthread+0x96/0xa0
  4177. [ 635.874596] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4178. [ 635.874599] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4179. [ 635.874602] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4180. [ 635.874604] ---[ end trace 15b8c8d16278c1dd ]---
  4181. [ 635.878467] ------------[ cut here ]------------
  4182. [ 635.878477] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4183. [ 635.878479] Hardware name: X8ST3
  4184. [ 635.878481] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4185. [ 635.878498] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4186. [ 635.878500] Call Trace:
  4187. [ 635.878505] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4188. [ 635.878508] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4189. [ 635.878516] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4190. [ 635.878527] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4191. [ 635.878534] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4192. [ 635.878541] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4193. [ 635.878548] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4194. [ 635.878552] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4195. [ 635.878561] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4196. [ 635.878572] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4197. [ 635.878582] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4198. [ 635.878586] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4199. [ 635.878596] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4200. [ 635.878606] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4201. [ 635.878610] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4202. [ 635.878614] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4203. [ 635.878623] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4204. [ 635.878632] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4205. [ 635.878642] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4206. [ 635.878651] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4207. [ 635.878654] [<ffffffff810523e6>] kthread+0x96/0xa0
  4208. [ 635.878658] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4209. [ 635.878661] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4210. [ 635.878663] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4211. [ 635.878665] ---[ end trace 15b8c8d16278c1de ]---
  4212. [ 635.882353] ------------[ cut here ]------------
  4213. [ 635.882363] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4214. [ 635.882366] Hardware name: X8ST3
  4215. [ 635.882367] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4216. [ 635.882384] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4217. [ 635.882386] Call Trace:
  4218. [ 635.882391] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4219. [ 635.882394] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4220. [ 635.882402] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4221. [ 635.882413] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4222. [ 635.882420] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4223. [ 635.882427] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4224. [ 635.882434] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4225. [ 635.882438] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4226. [ 635.882447] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4227. [ 635.882457] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4228. [ 635.882468] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4229. [ 635.882472] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4230. [ 635.882482] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4231. [ 635.882492] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4232. [ 635.882496] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4233. [ 635.882499] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4234. [ 635.882509] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4235. [ 635.882518] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4236. [ 635.882527] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4237. [ 635.882537] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4238. [ 635.882540] [<ffffffff810523e6>] kthread+0x96/0xa0
  4239. [ 635.882543] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4240. [ 635.882546] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4241. [ 635.882549] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4242. [ 635.882551] ---[ end trace 15b8c8d16278c1df ]---
  4243. [ 635.886217] ------------[ cut here ]------------
  4244. [ 635.886228] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4245. [ 635.886230] Hardware name: X8ST3
  4246. [ 635.886231] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4247. [ 635.886249] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4248. [ 635.886251] Call Trace:
  4249. [ 635.886255] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4250. [ 635.886259] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4251. [ 635.886267] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4252. [ 635.886277] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4253. [ 635.886285] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4254. [ 635.886292] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4255. [ 635.886299] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4256. [ 635.886303] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4257. [ 635.886312] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4258. [ 635.886322] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4259. [ 635.886333] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4260. [ 635.886336] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4261. [ 635.886347] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4262. [ 635.886357] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4263. [ 635.886361] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4264. [ 635.886365] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4265. [ 635.886374] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4266. [ 635.886383] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4267. [ 635.886393] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4268. [ 635.886402] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4269. [ 635.886405] [<ffffffff810523e6>] kthread+0x96/0xa0
  4270. [ 635.886408] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4271. [ 635.886412] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4272. [ 635.886414] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4273. [ 635.886416] ---[ end trace 15b8c8d16278c1e0 ]---
  4274. [ 635.890149] ------------[ cut here ]------------
  4275. [ 635.890158] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4276. [ 635.890161] Hardware name: X8ST3
  4277. [ 635.890162] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4278. [ 635.890178] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4279. [ 635.890180] Call Trace:
  4280. [ 635.890184] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4281. [ 635.890188] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4282. [ 635.890195] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4283. [ 635.890205] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4284. [ 635.890212] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4285. [ 635.890219] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4286. [ 635.890225] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4287. [ 635.890229] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4288. [ 635.890237] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4289. [ 635.890247] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4290. [ 635.890257] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4291. [ 635.890260] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4292. [ 635.890270] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4293. [ 635.890280] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4294. [ 635.890284] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4295. [ 635.890287] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4296. [ 635.890295] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4297. [ 635.890304] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4298. [ 635.890313] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4299. [ 635.890322] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4300. [ 635.890325] [<ffffffff810523e6>] kthread+0x96/0xa0
  4301. [ 635.890328] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4302. [ 635.890331] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4303. [ 635.890333] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4304. [ 635.890335] ---[ end trace 15b8c8d16278c1e1 ]---
  4305. [ 635.893936] ------------[ cut here ]------------
  4306. [ 635.893946] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4307. [ 635.893948] Hardware name: X8ST3
  4308. [ 635.893949] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4309. [ 635.893966] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4310. [ 635.893968] Call Trace:
  4311. [ 635.893972] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4312. [ 635.893975] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4313. [ 635.893983] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4314. [ 635.893993] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4315. [ 635.894000] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4316. [ 635.894007] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4317. [ 635.894013] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4318. [ 635.894017] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4319. [ 635.894025] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4320. [ 635.894035] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4321. [ 635.894045] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4322. [ 635.894048] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4323. [ 635.894058] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4324. [ 635.894068] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4325. [ 635.894071] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4326. [ 635.894075] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4327. [ 635.894083] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4328. [ 635.894092] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4329. [ 635.894101] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4330. [ 635.894110] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4331. [ 635.894113] [<ffffffff810523e6>] kthread+0x96/0xa0
  4332. [ 635.894116] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4333. [ 635.894119] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4334. [ 635.894121] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4335. [ 635.894123] ---[ end trace 15b8c8d16278c1e2 ]---
  4336. [ 635.897532] ------------[ cut here ]------------
  4337. [ 635.897542] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4338. [ 635.897544] Hardware name: X8ST3
  4339. [ 635.897545] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4340. [ 635.897562] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4341. [ 635.897564] Call Trace:
  4342. [ 635.897568] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4343. [ 635.897571] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4344. [ 635.897578] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4345. [ 635.897588] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4346. [ 635.897595] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4347. [ 635.897602] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4348. [ 635.897609] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4349. [ 635.897612] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4350. [ 635.897620] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4351. [ 635.897630] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4352. [ 635.897640] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4353. [ 635.897643] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4354. [ 635.897653] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4355. [ 635.897663] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4356. [ 635.897667] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4357. [ 635.897670] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4358. [ 635.897679] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4359. [ 635.897687] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4360. [ 635.897696] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4361. [ 635.897705] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4362. [ 635.897708] [<ffffffff810523e6>] kthread+0x96/0xa0
  4363. [ 635.897711] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4364. [ 635.897714] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4365. [ 635.897717] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4366. [ 635.897718] ---[ end trace 15b8c8d16278c1e3 ]---
  4367. [ 635.901245] ------------[ cut here ]------------
  4368. [ 635.901254] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4369. [ 635.901256] Hardware name: X8ST3
  4370. [ 635.901258] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4371. [ 635.901274] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4372. [ 635.901276] Call Trace:
  4373. [ 635.901280] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4374. [ 635.901283] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4375. [ 635.901291] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4376. [ 635.901301] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4377. [ 635.901308] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4378. [ 635.901314] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4379. [ 635.901321] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4380. [ 635.901325] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4381. [ 635.901333] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4382. [ 635.901343] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4383. [ 635.901352] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4384. [ 635.901356] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4385. [ 635.901366] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4386. [ 635.901375] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4387. [ 635.901379] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4388. [ 635.901382] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4389. [ 635.901391] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4390. [ 635.901400] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4391. [ 635.901408] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4392. [ 635.901417] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4393. [ 635.901420] [<ffffffff810523e6>] kthread+0x96/0xa0
  4394. [ 635.901423] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4395. [ 635.901426] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4396. [ 635.901429] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4397. [ 635.901431] ---[ end trace 15b8c8d16278c1e4 ]---
  4398. [ 635.904995] ------------[ cut here ]------------
  4399. [ 635.905005] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4400. [ 635.905007] Hardware name: X8ST3
  4401. [ 635.905008] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4402. [ 635.905025] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4403. [ 635.905027] Call Trace:
  4404. [ 635.905031] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4405. [ 635.905034] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4406. [ 635.905042] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4407. [ 635.905052] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4408. [ 635.905059] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4409. [ 635.905065] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4410. [ 635.905072] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4411. [ 635.905076] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4412. [ 635.905084] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4413. [ 635.905093] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4414. [ 635.905103] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4415. [ 635.905107] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4416. [ 635.905117] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4417. [ 635.905126] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4418. [ 635.905130] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4419. [ 635.905133] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4420. [ 635.905142] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4421. [ 635.905150] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4422. [ 635.905159] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4423. [ 635.905168] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4424. [ 635.905171] [<ffffffff810523e6>] kthread+0x96/0xa0
  4425. [ 635.905174] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4426. [ 635.905177] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4427. [ 635.905179] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4428. [ 635.905181] ---[ end trace 15b8c8d16278c1e5 ]---
  4429. [ 635.908564] ------------[ cut here ]------------
  4430. [ 635.908574] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4431. [ 635.908576] Hardware name: X8ST3
  4432. [ 635.908577] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4433. [ 635.908594] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4434. [ 635.908596] Call Trace:
  4435. [ 635.908600] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4436. [ 635.908603] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4437. [ 635.908611] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4438. [ 635.908621] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4439. [ 635.908628] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4440. [ 635.908634] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4441. [ 635.908641] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4442. [ 635.908645] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4443. [ 635.908653] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4444. [ 635.908662] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4445. [ 635.908672] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4446. [ 635.908676] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4447. [ 635.908686] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4448. [ 635.908695] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4449. [ 635.908699] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4450. [ 635.908702] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4451. [ 635.908711] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4452. [ 635.908719] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4453. [ 635.908728] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4454. [ 635.908737] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4455. [ 635.908740] [<ffffffff810523e6>] kthread+0x96/0xa0
  4456. [ 635.908743] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4457. [ 635.908746] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4458. [ 635.908749] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4459. [ 635.908751] ---[ end trace 15b8c8d16278c1e6 ]---
  4460. [ 635.912480] ------------[ cut here ]------------
  4461. [ 635.912489] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4462. [ 635.912491] Hardware name: X8ST3
  4463. [ 635.912493] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4464. [ 635.912509] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4465. [ 635.912511] Call Trace:
  4466. [ 635.912515] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4467. [ 635.912518] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4468. [ 635.912526] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4469. [ 635.912536] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4470. [ 635.912543] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4471. [ 635.912550] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4472. [ 635.912556] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4473. [ 635.912560] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4474. [ 635.912568] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4475. [ 635.912578] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4476. [ 635.912588] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4477. [ 635.912591] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4478. [ 635.912601] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4479. [ 635.912611] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4480. [ 635.912614] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4481. [ 635.912617] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4482. [ 635.912626] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4483. [ 635.912635] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4484. [ 635.912644] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4485. [ 635.912652] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4486. [ 635.912655] [<ffffffff810523e6>] kthread+0x96/0xa0
  4487. [ 635.912658] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4488. [ 635.912661] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4489. [ 635.912664] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4490. [ 635.912666] ---[ end trace 15b8c8d16278c1e7 ]---
  4491. [ 635.916924] ------------[ cut here ]------------
  4492. [ 635.916934] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4493. [ 635.916936] Hardware name: X8ST3
  4494. [ 635.916937] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4495. [ 635.916953] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4496. [ 635.916955] Call Trace:
  4497. [ 635.916959] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4498. [ 635.916963] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4499. [ 635.916970] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4500. [ 635.916980] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4501. [ 635.916987] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4502. [ 635.916994] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4503. [ 635.917000] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4504. [ 635.917004] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4505. [ 635.917012] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4506. [ 635.917022] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4507. [ 635.917032] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4508. [ 635.917035] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4509. [ 635.917045] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4510. [ 635.917055] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4511. [ 635.917058] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4512. [ 635.917062] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4513. [ 635.917070] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4514. [ 635.917079] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4515. [ 635.917088] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4516. [ 635.917097] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4517. [ 635.917100] [<ffffffff810523e6>] kthread+0x96/0xa0
  4518. [ 635.917103] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4519. [ 635.917106] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4520. [ 635.917108] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4521. [ 635.917110] ---[ end trace 15b8c8d16278c1e8 ]---
  4522. [ 635.921143] ------------[ cut here ]------------
  4523. [ 635.921152] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4524. [ 635.921154] Hardware name: X8ST3
  4525. [ 635.921156] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4526. [ 635.921172] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4527. [ 635.921174] Call Trace:
  4528. [ 635.921178] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4529. [ 635.921182] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4530. [ 635.921189] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4531. [ 635.921199] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4532. [ 635.921206] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4533. [ 635.921213] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4534. [ 635.921219] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4535. [ 635.921223] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4536. [ 635.921231] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4537. [ 635.921241] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4538. [ 635.921251] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4539. [ 635.921254] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4540. [ 635.921264] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4541. [ 635.921274] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4542. [ 635.921277] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4543. [ 635.921281] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4544. [ 635.921289] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4545. [ 635.921298] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4546. [ 635.921307] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4547. [ 635.921316] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4548. [ 635.921319] [<ffffffff810523e6>] kthread+0x96/0xa0
  4549. [ 635.921322] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4550. [ 635.921325] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4551. [ 635.921327] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4552. [ 635.921329] ---[ end trace 15b8c8d16278c1e9 ]---
  4553. [ 635.925487] ------------[ cut here ]------------
  4554. [ 635.925496] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4555. [ 635.925498] Hardware name: X8ST3
  4556. [ 635.925500] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4557. [ 635.925516] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4558. [ 635.925518] Call Trace:
  4559. [ 635.925522] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4560. [ 635.925525] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4561. [ 635.925533] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4562. [ 635.925543] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4563. [ 635.925550] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4564. [ 635.925556] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4565. [ 635.925563] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4566. [ 635.925567] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4567. [ 635.925575] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4568. [ 635.925584] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4569. [ 635.925594] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4570. [ 635.925598] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4571. [ 635.925607] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4572. [ 635.925617] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4573. [ 635.925621] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4574. [ 635.925624] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4575. [ 635.925632] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4576. [ 635.925641] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4577. [ 635.925650] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4578. [ 635.925658] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4579. [ 635.925661] [<ffffffff810523e6>] kthread+0x96/0xa0
  4580. [ 635.925664] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4581. [ 635.925667] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4582. [ 635.925670] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4583. [ 635.925672] ---[ end trace 15b8c8d16278c1ea ]---
  4584. [ 635.930311] ------------[ cut here ]------------
  4585. [ 635.930321] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4586. [ 635.930323] Hardware name: X8ST3
  4587. [ 635.930325] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4588. [ 635.930342] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4589. [ 635.930344] Call Trace:
  4590. [ 635.930348] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4591. [ 635.930352] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4592. [ 635.930360] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4593. [ 635.930370] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4594. [ 635.930378] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4595. [ 635.930385] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4596. [ 635.930392] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4597. [ 635.930396] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4598. [ 635.930404] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4599. [ 635.930414] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4600. [ 635.930425] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4601. [ 635.930428] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4602. [ 635.930439] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4603. [ 635.930449] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4604. [ 635.930453] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4605. [ 635.930456] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4606. [ 635.930465] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4607. [ 635.930474] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4608. [ 635.930484] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4609. [ 635.930493] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4610. [ 635.930496] [<ffffffff810523e6>] kthread+0x96/0xa0
  4611. [ 635.930499] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4612. [ 635.930502] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4613. [ 635.930505] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4614. [ 635.930507] ---[ end trace 15b8c8d16278c1eb ]---
  4615. [ 635.934545] ------------[ cut here ]------------
  4616. [ 635.934556] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4617. [ 635.934558] Hardware name: X8ST3
  4618. [ 635.934559] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4619. [ 635.934577] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4620. [ 635.934579] Call Trace:
  4621. [ 635.934583] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4622. [ 635.934587] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4623. [ 635.934595] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4624. [ 635.934606] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4625. [ 635.934613] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4626. [ 635.934620] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4627. [ 635.934627] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4628. [ 635.934631] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4629. [ 635.934640] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4630. [ 635.934650] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4631. [ 635.934660] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4632. [ 635.934664] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4633. [ 635.934675] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4634. [ 635.934685] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4635. [ 635.934689] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4636. [ 635.934692] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4637. [ 635.934702] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4638. [ 635.934711] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4639. [ 635.934720] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4640. [ 635.934730] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4641. [ 635.934733] [<ffffffff810523e6>] kthread+0x96/0xa0
  4642. [ 635.934736] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4643. [ 635.934739] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4644. [ 635.934742] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4645. [ 635.934744] ---[ end trace 15b8c8d16278c1ec ]---
  4646. [ 635.939191] ------------[ cut here ]------------
  4647. [ 635.939201] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4648. [ 635.939203] Hardware name: X8ST3
  4649. [ 635.939204] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4650. [ 635.939222] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4651. [ 635.939224] Call Trace:
  4652. [ 635.939228] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4653. [ 635.939232] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4654. [ 635.939240] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4655. [ 635.939250] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4656. [ 635.939258] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4657. [ 635.939265] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4658. [ 635.939272] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4659. [ 635.939276] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4660. [ 635.939285] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4661. [ 635.939295] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4662. [ 635.939306] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4663. [ 635.939309] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4664. [ 635.939320] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4665. [ 635.939330] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4666. [ 635.939334] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4667. [ 635.939338] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4668. [ 635.939347] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4669. [ 635.939356] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4670. [ 635.939366] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4671. [ 635.939375] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4672. [ 635.939378] [<ffffffff810523e6>] kthread+0x96/0xa0
  4673. [ 635.939381] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4674. [ 635.939384] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4675. [ 635.939387] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4676. [ 635.939389] ---[ end trace 15b8c8d16278c1ed ]---
  4677. [ 635.943393] ------------[ cut here ]------------
  4678. [ 635.943403] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4679. [ 635.943405] Hardware name: X8ST3
  4680. [ 635.943407] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4681. [ 635.943424] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4682. [ 635.943426] Call Trace:
  4683. [ 635.943431] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4684. [ 635.943434] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4685. [ 635.943442] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4686. [ 635.943453] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4687. [ 635.943461] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4688. [ 635.943468] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4689. [ 635.943475] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4690. [ 635.943479] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4691. [ 635.943487] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4692. [ 635.943498] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4693. [ 635.943508] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4694. [ 635.943512] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4695. [ 635.943522] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4696. [ 635.943532] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4697. [ 635.943536] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4698. [ 635.943540] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4699. [ 635.943549] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4700. [ 635.943558] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4701. [ 635.943568] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4702. [ 635.943577] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4703. [ 635.943580] [<ffffffff810523e6>] kthread+0x96/0xa0
  4704. [ 635.943583] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4705. [ 635.943587] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4706. [ 635.943589] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4707. [ 635.943591] ---[ end trace 15b8c8d16278c1ee ]---
  4708. [ 635.947456] ------------[ cut here ]------------
  4709. [ 635.947467] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4710. [ 635.947469] Hardware name: X8ST3
  4711. [ 635.947470] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4712. [ 635.947489] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4713. [ 635.947491] Call Trace:
  4714. [ 635.947496] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4715. [ 635.947499] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4716. [ 635.947507] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4717. [ 635.947518] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4718. [ 635.947526] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4719. [ 635.947533] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4720. [ 635.947540] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4721. [ 635.947544] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4722. [ 635.947552] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4723. [ 635.947563] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4724. [ 635.947573] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4725. [ 635.947577] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4726. [ 635.947587] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4727. [ 635.947597] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4728. [ 635.947601] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4729. [ 635.947611] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4730. [ 635.947620] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4731. [ 635.947629] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4732. [ 635.947639] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4733. [ 635.947642] [<ffffffff810523e6>] kthread+0x96/0xa0
  4734. [ 635.947645] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4735. [ 635.947648] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4736. [ 635.947651] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4737. [ 635.947653] ---[ end trace 15b8c8d16278c1ef ]---
  4738. [ 635.951503] ------------[ cut here ]------------
  4739. [ 635.951513] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4740. [ 635.951515] Hardware name: X8ST3
  4741. [ 635.951516] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4742. [ 635.951534] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4743. [ 635.951536] Call Trace:
  4744. [ 635.951540] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4745. [ 635.951543] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4746. [ 635.951551] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4747. [ 635.951562] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4748. [ 635.951569] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4749. [ 635.951576] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4750. [ 635.951583] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4751. [ 635.951587] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4752. [ 635.951596] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4753. [ 635.951606] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4754. [ 635.951617] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4755. [ 635.951620] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4756. [ 635.951631] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4757. [ 635.951641] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4758. [ 635.951645] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4759. [ 635.951654] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4760. [ 635.951663] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4761. [ 635.951673] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4762. [ 635.951682] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4763. [ 635.951685] [<ffffffff810523e6>] kthread+0x96/0xa0
  4764. [ 635.951688] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4765. [ 635.951691] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4766. [ 635.951694] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4767. [ 635.951696] ---[ end trace 15b8c8d16278c1f0 ]---
  4768. [ 635.955515] ------------[ cut here ]------------
  4769. [ 635.955526] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4770. [ 635.955528] Hardware name: X8ST3
  4771. [ 635.955529] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4772. [ 635.955547] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4773. [ 635.955549] Call Trace:
  4774. [ 635.955553] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4775. [ 635.955557] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4776. [ 635.955565] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4777. [ 635.955575] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4778. [ 635.955583] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4779. [ 635.955590] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4780. [ 635.955597] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4781. [ 635.955601] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4782. [ 635.955610] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4783. [ 635.955620] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4784. [ 635.955630] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4785. [ 635.955634] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4786. [ 635.955645] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4787. [ 635.955655] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4788. [ 635.955659] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4789. [ 635.955662] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4790. [ 635.955672] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4791. [ 635.955681] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4792. [ 635.955690] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4793. [ 635.955700] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4794. [ 635.955703] [<ffffffff810523e6>] kthread+0x96/0xa0
  4795. [ 635.955706] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4796. [ 635.955709] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4797. [ 635.955712] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4798. [ 635.955714] ---[ end trace 15b8c8d16278c1f1 ]---
  4799. [ 635.959434] ------------[ cut here ]------------
  4800. [ 635.959444] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4801. [ 635.959446] Hardware name: X8ST3
  4802. [ 635.959447] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4803. [ 635.959465] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4804. [ 635.959467] Call Trace:
  4805. [ 635.959471] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4806. [ 635.959475] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4807. [ 635.959483] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4808. [ 635.959493] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4809. [ 635.959501] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4810. [ 635.959508] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4811. [ 635.959515] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4812. [ 635.959518] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4813. [ 635.959527] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4814. [ 635.959537] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4815. [ 635.959548] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4816. [ 635.959551] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4817. [ 635.959562] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4818. [ 635.959572] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4819. [ 635.959576] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4820. [ 635.959579] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4821. [ 635.959588] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4822. [ 635.959598] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4823. [ 635.959607] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4824. [ 635.959616] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4825. [ 635.959619] [<ffffffff810523e6>] kthread+0x96/0xa0
  4826. [ 635.959623] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4827. [ 635.959626] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4828. [ 635.959628] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4829. [ 635.959630] ---[ end trace 15b8c8d16278c1f2 ]---
  4830. [ 635.963441] ------------[ cut here ]------------
  4831. [ 635.963452] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4832. [ 635.963454] Hardware name: X8ST3
  4833. [ 635.963455] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4834. [ 635.963474] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4835. [ 635.963476] Call Trace:
  4836. [ 635.963481] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4837. [ 635.963484] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4838. [ 635.963492] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4839. [ 635.963503] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4840. [ 635.963510] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4841. [ 635.963517] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4842. [ 635.963524] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4843. [ 635.963528] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4844. [ 635.963537] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4845. [ 635.963547] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4846. [ 635.963558] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4847. [ 635.963561] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4848. [ 635.963572] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4849. [ 635.963582] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4850. [ 635.963586] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4851. [ 635.963595] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4852. [ 635.963604] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4853. [ 635.963614] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4854. [ 635.963623] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4855. [ 635.963626] [<ffffffff810523e6>] kthread+0x96/0xa0
  4856. [ 635.963629] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4857. [ 635.963632] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4858. [ 635.963635] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4859. [ 635.963637] ---[ end trace 15b8c8d16278c1f3 ]---
  4860. [ 635.967384] ------------[ cut here ]------------
  4861. [ 635.967394] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4862. [ 635.967397] Hardware name: X8ST3
  4863. [ 635.967398] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4864. [ 635.967416] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4865. [ 635.967418] Call Trace:
  4866. [ 635.967422] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4867. [ 635.967425] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4868. [ 635.967434] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4869. [ 635.967444] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4870. [ 635.967452] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4871. [ 635.967459] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4872. [ 635.967466] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4873. [ 635.967470] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4874. [ 635.967479] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4875. [ 635.967489] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4876. [ 635.967499] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4877. [ 635.967503] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4878. [ 635.967514] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4879. [ 635.967524] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4880. [ 635.967528] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4881. [ 635.967531] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4882. [ 635.967540] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4883. [ 635.967550] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4884. [ 635.967559] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4885. [ 635.967568] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4886. [ 635.967571] [<ffffffff810523e6>] kthread+0x96/0xa0
  4887. [ 635.967575] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4888. [ 635.967578] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4889. [ 635.967581] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4890. [ 635.967583] ---[ end trace 15b8c8d16278c1f4 ]---
  4891. [ 635.971152] ------------[ cut here ]------------
  4892. [ 635.971162] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4893. [ 635.971164] Hardware name: X8ST3
  4894. [ 635.971165] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4895. [ 635.971182] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4896. [ 635.971184] Call Trace:
  4897. [ 635.971188] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4898. [ 635.971191] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4899. [ 635.971199] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4900. [ 635.971209] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4901. [ 635.971216] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4902. [ 635.971222] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4903. [ 635.971229] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4904. [ 635.971233] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4905. [ 635.971241] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4906. [ 635.971250] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4907. [ 635.971260] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4908. [ 635.971264] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4909. [ 635.971274] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4910. [ 635.971283] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4911. [ 635.971287] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4912. [ 635.971290] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4913. [ 635.971299] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4914. [ 635.971308] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4915. [ 635.971316] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4916. [ 635.971325] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4917. [ 635.971328] [<ffffffff810523e6>] kthread+0x96/0xa0
  4918. [ 635.971331] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4919. [ 635.971334] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4920. [ 635.971337] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4921. [ 635.971339] ---[ end trace 15b8c8d16278c1f5 ]---
  4922. [ 635.974908] ------------[ cut here ]------------
  4923. [ 635.974918] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4924. [ 635.974956] Hardware name: X8ST3
  4925. [ 635.974958] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4926. [ 635.974987] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4927. [ 635.974990] Call Trace:
  4928. [ 635.974996] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4929. [ 635.975000] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4930. [ 635.975010] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4931. [ 635.975021] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4932. [ 635.975030] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4933. [ 635.975038] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4934. [ 635.975047] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4935. [ 635.975052] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4936. [ 635.975062] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4937. [ 635.975073] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4938. [ 635.975085] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4939. [ 635.975090] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4940. [ 635.975101] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4941. [ 635.975113] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4942. [ 635.975118] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4943. [ 635.975123] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4944. [ 635.975133] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4945. [ 635.975143] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4946. [ 635.975154] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4947. [ 635.975164] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4948. [ 635.975169] [<ffffffff810523e6>] kthread+0x96/0xa0
  4949. [ 635.975173] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4950. [ 635.975178] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4951. [ 635.975182] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4952. [ 635.975185] ---[ end trace 15b8c8d16278c1f6 ]---
  4953. [ 635.978621] ------------[ cut here ]------------
  4954. [ 635.978631] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4955. [ 635.978633] Hardware name: X8ST3
  4956. [ 635.978634] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4957. [ 635.978650] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4958. [ 635.978652] Call Trace:
  4959. [ 635.978656] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4960. [ 635.978660] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4961. [ 635.978667] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4962. [ 635.978677] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4963. [ 635.978684] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4964. [ 635.978691] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4965. [ 635.978697] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4966. [ 635.978701] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4967. [ 635.978709] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4968. [ 635.978719] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  4969. [ 635.978729] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4970. [ 635.978732] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4971. [ 635.978742] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4972. [ 635.978752] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4973. [ 635.978756] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4974. [ 635.978759] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4975. [ 635.978767] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4976. [ 635.978776] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  4977. [ 635.978785] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4978. [ 635.978794] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4979. [ 635.978797] [<ffffffff810523e6>] kthread+0x96/0xa0
  4980. [ 635.978800] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4981. [ 635.978803] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4982. [ 635.978805] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4983. [ 635.978807] ---[ end trace 15b8c8d16278c1f7 ]---
  4984. [ 635.982333] ------------[ cut here ]------------
  4985. [ 635.982342] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4986. [ 635.982344] Hardware name: X8ST3
  4987. [ 635.982346] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4988. [ 635.982362] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4989. [ 635.982364] Call Trace:
  4990. [ 635.982368] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4991. [ 635.982371] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4992. [ 635.982379] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4993. [ 635.982389] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4994. [ 635.982396] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  4995. [ 635.982402] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4996. [ 635.982409] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4997. [ 635.982413] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4998. [ 635.982421] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4999. [ 635.982431] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5000. [ 635.982440] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5001. [ 635.982444] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5002. [ 635.982454] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5003. [ 635.982463] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5004. [ 635.982467] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5005. [ 635.982470] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5006. [ 635.982479] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5007. [ 635.982488] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5008. [ 635.982496] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5009. [ 635.982505] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5010. [ 635.982508] [<ffffffff810523e6>] kthread+0x96/0xa0
  5011. [ 635.982511] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5012. [ 635.982514] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5013. [ 635.982517] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5014. [ 635.982519] ---[ end trace 15b8c8d16278c1f8 ]---
  5015. [ 635.986115] ------------[ cut here ]------------
  5016. [ 635.986125] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5017. [ 635.986127] Hardware name: X8ST3
  5018. [ 635.986128] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5019. [ 635.986145] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5020. [ 635.986146] Call Trace:
  5021. [ 635.986151] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5022. [ 635.986154] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5023. [ 635.986161] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5024. [ 635.986171] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5025. [ 635.986179] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5026. [ 635.986185] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5027. [ 635.986192] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5028. [ 635.986195] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5029. [ 635.986204] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5030. [ 635.986213] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5031. [ 635.986223] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5032. [ 635.986227] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5033. [ 635.986236] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5034. [ 635.986246] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5035. [ 635.986250] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5036. [ 635.986253] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5037. [ 635.986261] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5038. [ 635.986270] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5039. [ 635.986279] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5040. [ 635.986288] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5041. [ 635.986291] [<ffffffff810523e6>] kthread+0x96/0xa0
  5042. [ 635.986294] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5043. [ 635.986297] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5044. [ 635.986299] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5045. [ 635.986301] ---[ end trace 15b8c8d16278c1f9 ]---
  5046. [ 635.989837] ------------[ cut here ]------------
  5047. [ 635.989847] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5048. [ 635.989849] Hardware name: X8ST3
  5049. [ 635.989850] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5050. [ 635.989867] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5051. [ 635.989869] Call Trace:
  5052. [ 635.989873] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5053. [ 635.989876] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5054. [ 635.989884] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5055. [ 635.989894] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5056. [ 635.989901] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5057. [ 635.989907] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5058. [ 635.989914] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5059. [ 635.989952] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5060. [ 635.989960] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5061. [ 635.989972] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5062. [ 635.989984] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5063. [ 635.989989] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5064. [ 635.990001] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5065. [ 635.990012] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5066. [ 635.990018] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5067. [ 635.990022] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5068. [ 635.990032] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5069. [ 635.990043] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5070. [ 635.990053] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5071. [ 635.990063] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5072. [ 635.990068] [<ffffffff810523e6>] kthread+0x96/0xa0
  5073. [ 635.990072] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5074. [ 635.990077] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5075. [ 635.990081] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5076. [ 635.990084] ---[ end trace 15b8c8d16278c1fa ]---
  5077. [ 635.993586] ------------[ cut here ]------------
  5078. [ 635.993595] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5079. [ 635.993598] Hardware name: X8ST3
  5080. [ 635.993599] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5081. [ 635.993615] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5082. [ 635.993617] Call Trace:
  5083. [ 635.993621] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5084. [ 635.993624] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5085. [ 635.993632] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5086. [ 635.993642] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5087. [ 635.993649] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5088. [ 635.993655] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5089. [ 635.993662] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5090. [ 635.993666] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5091. [ 635.993674] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5092. [ 635.993684] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5093. [ 635.993694] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5094. [ 635.993697] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5095. [ 635.993707] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5096. [ 635.993717] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5097. [ 635.993720] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5098. [ 635.993723] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5099. [ 635.993732] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5100. [ 635.993741] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5101. [ 635.993750] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5102. [ 635.993758] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5103. [ 635.993761] [<ffffffff810523e6>] kthread+0x96/0xa0
  5104. [ 635.993764] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5105. [ 635.993767] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5106. [ 635.993770] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5107. [ 635.993772] ---[ end trace 15b8c8d16278c1fb ]---
  5108. [ 635.997441] ------------[ cut here ]------------
  5109. [ 635.997451] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5110. [ 635.997453] Hardware name: X8ST3
  5111. [ 635.997454] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5112. [ 635.997471] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5113. [ 635.997473] Call Trace:
  5114. [ 635.997477] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5115. [ 635.997480] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5116. [ 635.997488] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5117. [ 635.997498] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5118. [ 635.997505] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5119. [ 635.997511] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5120. [ 635.997518] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5121. [ 635.997522] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5122. [ 635.997530] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5123. [ 635.997540] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5124. [ 635.997549] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5125. [ 635.997553] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5126. [ 635.997563] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5127. [ 635.997572] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5128. [ 635.997576] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5129. [ 635.997579] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5130. [ 635.997588] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5131. [ 635.997597] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5132. [ 635.997606] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5133. [ 635.997614] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5134. [ 635.997617] [<ffffffff810523e6>] kthread+0x96/0xa0
  5135. [ 635.997620] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5136. [ 635.997623] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5137. [ 635.997626] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5138. [ 635.997628] ---[ end trace 15b8c8d16278c1fc ]---
  5139. [ 636.001565] ------------[ cut here ]------------
  5140. [ 636.001575] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5141. [ 636.001577] Hardware name: X8ST3
  5142. [ 636.001578] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5143. [ 636.001595] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5144. [ 636.001597] Call Trace:
  5145. [ 636.001601] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5146. [ 636.001604] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5147. [ 636.001612] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5148. [ 636.001622] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5149. [ 636.001629] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5150. [ 636.001635] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5151. [ 636.001642] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5152. [ 636.001646] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5153. [ 636.001654] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5154. [ 636.001663] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5155. [ 636.001673] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5156. [ 636.001677] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5157. [ 636.001687] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5158. [ 636.001696] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5159. [ 636.001700] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5160. [ 636.001703] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5161. [ 636.001712] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5162. [ 636.001721] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5163. [ 636.001730] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5164. [ 636.001738] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5165. [ 636.001741] [<ffffffff810523e6>] kthread+0x96/0xa0
  5166. [ 636.001744] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5167. [ 636.001747] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5168. [ 636.001750] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5169. [ 636.001752] ---[ end trace 15b8c8d16278c1fd ]---
  5170. [ 636.006587] ------------[ cut here ]------------
  5171. [ 636.006596] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5172. [ 636.006598] Hardware name: X8ST3
  5173. [ 636.006600] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5174. [ 636.006616] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5175. [ 636.006618] Call Trace:
  5176. [ 636.006622] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5177. [ 636.006625] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5178. [ 636.006633] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5179. [ 636.006643] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5180. [ 636.006650] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5181. [ 636.006656] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5182. [ 636.006663] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5183. [ 636.006667] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5184. [ 636.006675] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5185. [ 636.006685] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5186. [ 636.006694] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5187. [ 636.006698] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5188. [ 636.006708] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5189. [ 636.006717] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5190. [ 636.006721] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5191. [ 636.006724] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5192. [ 636.006733] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5193. [ 636.006741] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5194. [ 636.006750] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5195. [ 636.006759] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5196. [ 636.006762] [<ffffffff810523e6>] kthread+0x96/0xa0
  5197. [ 636.006765] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5198. [ 636.006768] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5199. [ 636.006770] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5200. [ 636.006772] ---[ end trace 15b8c8d16278c1fe ]---
  5201. [ 636.010850] ------------[ cut here ]------------
  5202. [ 636.010860] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5203. [ 636.010862] Hardware name: X8ST3
  5204. [ 636.010864] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5205. [ 636.010881] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5206. [ 636.010883] Call Trace:
  5207. [ 636.010888] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5208. [ 636.010891] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5209. [ 636.010899] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5210. [ 636.010910] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5211. [ 636.010918] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5212. [ 636.010970] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5213. [ 636.010979] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5214. [ 636.010985] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5215. [ 636.010995] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5216. [ 636.011007] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5217. [ 636.011020] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5218. [ 636.011026] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5219. [ 636.011038] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5220. [ 636.011050] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5221. [ 636.011056] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5222. [ 636.011061] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5223. [ 636.011072] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5224. [ 636.011083] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5225. [ 636.011095] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5226. [ 636.011107] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5227. [ 636.011112] [<ffffffff810523e6>] kthread+0x96/0xa0
  5228. [ 636.011117] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5229. [ 636.011122] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5230. [ 636.011126] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5231. [ 636.011130] ---[ end trace 15b8c8d16278c1ff ]---
  5232. [ 636.015807] ------------[ cut here ]------------
  5233. [ 636.015817] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5234. [ 636.015819] Hardware name: X8ST3
  5235. [ 636.015821] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5236. [ 636.015838] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5237. [ 636.015840] Call Trace:
  5238. [ 636.015844] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5239. [ 636.015848] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5240. [ 636.015856] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5241. [ 636.015867] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5242. [ 636.015874] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5243. [ 636.015881] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5244. [ 636.015888] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5245. [ 636.015892] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5246. [ 636.015901] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5247. [ 636.015911] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5248. [ 636.015961] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5249. [ 636.015967] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5250. [ 636.015980] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5251. [ 636.015992] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5252. [ 636.015998] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5253. [ 636.016003] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5254. [ 636.016015] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5255. [ 636.016026] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5256. [ 636.016038] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5257. [ 636.016049] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5258. [ 636.016055] [<ffffffff810523e6>] kthread+0x96/0xa0
  5259. [ 636.016059] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5260. [ 636.016064] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5261. [ 636.016069] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5262. [ 636.016072] ---[ end trace 15b8c8d16278c200 ]---
  5263. [ 636.020618] ------------[ cut here ]------------
  5264. [ 636.020628] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5265. [ 636.020630] Hardware name: X8ST3
  5266. [ 636.020631] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5267. [ 636.020649] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5268. [ 636.020651] Call Trace:
  5269. [ 636.020655] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5270. [ 636.020658] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5271. [ 636.020667] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5272. [ 636.020677] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5273. [ 636.020685] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5274. [ 636.020691] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5275. [ 636.020699] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5276. [ 636.020702] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5277. [ 636.020711] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5278. [ 636.020721] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5279. [ 636.020732] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5280. [ 636.020735] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5281. [ 636.020746] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5282. [ 636.020756] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5283. [ 636.020760] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5284. [ 636.020763] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5285. [ 636.020772] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5286. [ 636.020782] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5287. [ 636.020791] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5288. [ 636.020800] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5289. [ 636.020803] [<ffffffff810523e6>] kthread+0x96/0xa0
  5290. [ 636.020807] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5291. [ 636.020810] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5292. [ 636.020812] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5293. [ 636.020814] ---[ end trace 15b8c8d16278c201 ]---
  5294. [ 636.025078] ------------[ cut here ]------------
  5295. [ 636.025089] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5296. [ 636.025091] Hardware name: X8ST3
  5297. [ 636.025092] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5298. [ 636.025110] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5299. [ 636.025112] Call Trace:
  5300. [ 636.025116] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5301. [ 636.025119] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5302. [ 636.025128] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5303. [ 636.025138] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5304. [ 636.025146] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5305. [ 636.025153] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5306. [ 636.025160] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5307. [ 636.025164] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5308. [ 636.025172] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5309. [ 636.025183] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5310. [ 636.025193] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5311. [ 636.025197] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5312. [ 636.025207] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5313. [ 636.025218] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5314. [ 636.025221] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5315. [ 636.025225] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5316. [ 636.025234] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5317. [ 636.025243] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5318. [ 636.025253] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5319. [ 636.025262] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5320. [ 636.025265] [<ffffffff810523e6>] kthread+0x96/0xa0
  5321. [ 636.025269] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5322. [ 636.025272] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5323. [ 636.025274] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5324. [ 636.025276] ---[ end trace 15b8c8d16278c202 ]---
  5325. [ 636.029806] ------------[ cut here ]------------
  5326. [ 636.029816] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5327. [ 636.029819] Hardware name: X8ST3
  5328. [ 636.029820] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5329. [ 636.029838] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5330. [ 636.029840] Call Trace:
  5331. [ 636.029844] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5332. [ 636.029847] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5333. [ 636.029855] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5334. [ 636.029866] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5335. [ 636.029874] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5336. [ 636.029881] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5337. [ 636.029888] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5338. [ 636.029891] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5339. [ 636.029900] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5340. [ 636.029910] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5341. [ 636.029921] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5342. [ 636.029955] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5343. [ 636.029966] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5344. [ 636.029978] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5345. [ 636.029985] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5346. [ 636.029990] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5347. [ 636.030001] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5348. [ 636.030012] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5349. [ 636.030023] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5350. [ 636.030035] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5351. [ 636.030040] [<ffffffff810523e6>] kthread+0x96/0xa0
  5352. [ 636.030045] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5353. [ 636.030050] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5354. [ 636.030054] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5355. [ 636.030058] ---[ end trace 15b8c8d16278c203 ]---
  5356. [ 636.034506] ------------[ cut here ]------------
  5357. [ 636.034516] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5358. [ 636.034518] Hardware name: X8ST3
  5359. [ 636.034519] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5360. [ 636.034537] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5361. [ 636.034539] Call Trace:
  5362. [ 636.034543] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5363. [ 636.034546] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5364. [ 636.034555] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5365. [ 636.034565] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5366. [ 636.034573] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5367. [ 636.034579] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5368. [ 636.034586] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5369. [ 636.034590] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5370. [ 636.034599] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5371. [ 636.034609] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5372. [ 636.034619] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5373. [ 636.034623] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5374. [ 636.034634] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5375. [ 636.034644] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5376. [ 636.034648] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5377. [ 636.034651] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5378. [ 636.034660] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5379. [ 636.034669] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5380. [ 636.034679] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5381. [ 636.034688] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5382. [ 636.034691] [<ffffffff810523e6>] kthread+0x96/0xa0
  5383. [ 636.034694] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5384. [ 636.034698] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5385. [ 636.034700] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5386. [ 636.034702] ---[ end trace 15b8c8d16278c204 ]---
  5387. [ 636.039356] ------------[ cut here ]------------
  5388. [ 636.039366] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5389. [ 636.039368] Hardware name: X8ST3
  5390. [ 636.039369] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5391. [ 636.039387] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5392. [ 636.039389] Call Trace:
  5393. [ 636.039393] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5394. [ 636.039397] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5395. [ 636.039405] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5396. [ 636.039415] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5397. [ 636.039423] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5398. [ 636.039430] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5399. [ 636.039437] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5400. [ 636.039441] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5401. [ 636.039450] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5402. [ 636.039460] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5403. [ 636.039471] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5404. [ 636.039474] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5405. [ 636.039485] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5406. [ 636.039495] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5407. [ 636.039499] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5408. [ 636.039502] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5409. [ 636.039511] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5410. [ 636.039521] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5411. [ 636.039530] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5412. [ 636.039540] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5413. [ 636.039543] [<ffffffff810523e6>] kthread+0x96/0xa0
  5414. [ 636.039546] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5415. [ 636.039549] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5416. [ 636.039552] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5417. [ 636.039554] ---[ end trace 15b8c8d16278c205 ]---
  5418. [ 636.043405] ------------[ cut here ]------------
  5419. [ 636.043415] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5420. [ 636.043417] Hardware name: X8ST3
  5421. [ 636.043419] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5422. [ 636.043436] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5423. [ 636.043438] Call Trace:
  5424. [ 636.043443] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5425. [ 636.043446] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5426. [ 636.043454] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5427. [ 636.043465] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5428. [ 636.043472] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5429. [ 636.043479] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5430. [ 636.043486] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5431. [ 636.043490] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5432. [ 636.043499] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5433. [ 636.043510] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5434. [ 636.043520] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5435. [ 636.043524] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5436. [ 636.043534] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5437. [ 636.043545] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5438. [ 636.043549] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5439. [ 636.043552] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5440. [ 636.043561] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5441. [ 636.043570] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5442. [ 636.043580] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5443. [ 636.043589] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5444. [ 636.043592] [<ffffffff810523e6>] kthread+0x96/0xa0
  5445. [ 636.043595] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5446. [ 636.043599] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5447. [ 636.043601] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5448. [ 636.043603] ---[ end trace 15b8c8d16278c206 ]---
  5449. [ 636.047341] ------------[ cut here ]------------
  5450. [ 636.047351] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5451. [ 636.047354] Hardware name: X8ST3
  5452. [ 636.047355] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5453. [ 636.047372] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5454. [ 636.047374] Call Trace:
  5455. [ 636.047379] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5456. [ 636.047382] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5457. [ 636.047390] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5458. [ 636.047400] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5459. [ 636.047408] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5460. [ 636.047415] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5461. [ 636.047422] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5462. [ 636.047426] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5463. [ 636.047434] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5464. [ 636.047445] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5465. [ 636.047455] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5466. [ 636.047459] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5467. [ 636.047469] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5468. [ 636.047479] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5469. [ 636.047483] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5470. [ 636.047487] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5471. [ 636.047496] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5472. [ 636.047505] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5473. [ 636.047514] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5474. [ 636.047524] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5475. [ 636.047527] [<ffffffff810523e6>] kthread+0x96/0xa0
  5476. [ 636.047530] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5477. [ 636.047533] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5478. [ 636.047536] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5479. [ 636.047538] ---[ end trace 15b8c8d16278c207 ]---
  5480. [ 636.051317] ------------[ cut here ]------------
  5481. [ 636.051327] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5482. [ 636.051329] Hardware name: X8ST3
  5483. [ 636.051331] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5484. [ 636.051348] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5485. [ 636.051350] Call Trace:
  5486. [ 636.051355] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5487. [ 636.051358] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5488. [ 636.051366] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5489. [ 636.051377] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5490. [ 636.051385] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5491. [ 636.051391] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5492. [ 636.051399] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5493. [ 636.051402] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5494. [ 636.051411] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5495. [ 636.051421] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5496. [ 636.051432] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5497. [ 636.051436] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5498. [ 636.051446] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5499. [ 636.051456] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5500. [ 636.051460] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5501. [ 636.051464] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5502. [ 636.051473] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5503. [ 636.051482] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5504. [ 636.051492] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5505. [ 636.051501] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5506. [ 636.051504] [<ffffffff810523e6>] kthread+0x96/0xa0
  5507. [ 636.051507] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5508. [ 636.051510] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5509. [ 636.051513] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5510. [ 636.051515] ---[ end trace 15b8c8d16278c208 ]---
  5511. [ 636.055023] ------------[ cut here ]------------
  5512. [ 636.055033] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5513. [ 636.055035] Hardware name: X8ST3
  5514. [ 636.055037] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5515. [ 636.055054] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5516. [ 636.055056] Call Trace:
  5517. [ 636.055060] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5518. [ 636.055064] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5519. [ 636.055072] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5520. [ 636.055082] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5521. [ 636.055090] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5522. [ 636.055097] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5523. [ 636.055104] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5524. [ 636.055108] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5525. [ 636.055116] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5526. [ 636.055127] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5527. [ 636.055137] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5528. [ 636.055141] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5529. [ 636.055151] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5530. [ 636.055161] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5531. [ 636.055165] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5532. [ 636.055168] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5533. [ 636.055178] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5534. [ 636.055187] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5535. [ 636.055196] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5536. [ 636.055206] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5537. [ 636.055209] [<ffffffff810523e6>] kthread+0x96/0xa0
  5538. [ 636.055212] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5539. [ 636.055215] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5540. [ 636.055218] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5541. [ 636.055220] ---[ end trace 15b8c8d16278c209 ]---
  5542. [ 636.058854] ------------[ cut here ]------------
  5543. [ 636.058864] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5544. [ 636.058866] Hardware name: X8ST3
  5545. [ 636.058868] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5546. [ 636.058885] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5547. [ 636.058887] Call Trace:
  5548. [ 636.058892] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5549. [ 636.058895] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5550. [ 636.058903] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5551. [ 636.058914] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5552. [ 636.058983] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5553. [ 636.058991] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5554. [ 636.059000] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5555. [ 636.059006] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5556. [ 636.059016] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5557. [ 636.059029] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5558. [ 636.059041] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5559. [ 636.059047] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5560. [ 636.059060] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5561. [ 636.059072] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5562. [ 636.059077] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5563. [ 636.059082] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5564. [ 636.059093] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5565. [ 636.059105] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5566. [ 636.059116] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5567. [ 636.059127] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5568. [ 636.059132] [<ffffffff810523e6>] kthread+0x96/0xa0
  5569. [ 636.059137] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5570. [ 636.059142] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5571. [ 636.059147] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5572. [ 636.059150] ---[ end trace 15b8c8d16278c20a ]---
  5573. [ 636.062604] ------------[ cut here ]------------
  5574. [ 636.062614] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5575. [ 636.062616] Hardware name: X8ST3
  5576. [ 636.062617] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5577. [ 636.062634] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5578. [ 636.062636] Call Trace:
  5579. [ 636.062640] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5580. [ 636.062643] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5581. [ 636.062651] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5582. [ 636.062661] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5583. [ 636.062668] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5584. [ 636.062674] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5585. [ 636.062681] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5586. [ 636.062685] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5587. [ 636.062693] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5588. [ 636.062703] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5589. [ 636.062713] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5590. [ 636.062716] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5591. [ 636.062726] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5592. [ 636.062736] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5593. [ 636.062739] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5594. [ 636.062743] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5595. [ 636.062751] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5596. [ 636.062760] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5597. [ 636.062769] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5598. [ 636.062778] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5599. [ 636.062781] [<ffffffff810523e6>] kthread+0x96/0xa0
  5600. [ 636.062784] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5601. [ 636.062787] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5602. [ 636.062789] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5603. [ 636.062791] ---[ end trace 15b8c8d16278c20b ]---
  5604. [ 636.066257] ------------[ cut here ]------------
  5605. [ 636.066267] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5606. [ 636.066269] Hardware name: X8ST3
  5607. [ 636.066270] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5608. [ 636.066286] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5609. [ 636.066288] Call Trace:
  5610. [ 636.066292] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5611. [ 636.066296] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5612. [ 636.066303] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5613. [ 636.066313] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5614. [ 636.066320] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5615. [ 636.066327] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5616. [ 636.066333] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5617. [ 636.066337] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5618. [ 636.066345] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5619. [ 636.066355] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5620. [ 636.066365] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5621. [ 636.066369] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5622. [ 636.066379] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5623. [ 636.066388] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5624. [ 636.066392] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5625. [ 636.066395] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5626. [ 636.066404] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5627. [ 636.066412] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5628. [ 636.066421] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5629. [ 636.066430] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5630. [ 636.066433] [<ffffffff810523e6>] kthread+0x96/0xa0
  5631. [ 636.066436] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5632. [ 636.066439] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5633. [ 636.066442] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5634. [ 636.066444] ---[ end trace 15b8c8d16278c20c ]---
  5635. [ 636.070068] ------------[ cut here ]------------
  5636. [ 636.070078] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5637. [ 636.070080] Hardware name: X8ST3
  5638. [ 636.070081] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5639. [ 636.070098] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5640. [ 636.070100] Call Trace:
  5641. [ 636.070104] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5642. [ 636.070107] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5643. [ 636.070115] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5644. [ 636.070125] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5645. [ 636.070132] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5646. [ 636.070138] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5647. [ 636.070145] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5648. [ 636.070149] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5649. [ 636.070157] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5650. [ 636.070167] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5651. [ 636.070177] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5652. [ 636.070180] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5653. [ 636.070190] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5654. [ 636.070200] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5655. [ 636.070203] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5656. [ 636.070206] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5657. [ 636.070215] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5658. [ 636.070224] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5659. [ 636.070233] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5660. [ 636.070242] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5661. [ 636.070245] [<ffffffff810523e6>] kthread+0x96/0xa0
  5662. [ 636.070248] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5663. [ 636.070250] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5664. [ 636.070253] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5665. [ 636.070255] ---[ end trace 15b8c8d16278c20d ]---
  5666. [ 636.073863] ------------[ cut here ]------------
  5667. [ 636.073873] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5668. [ 636.073875] Hardware name: X8ST3
  5669. [ 636.073876] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5670. [ 636.073893] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5671. [ 636.073895] Call Trace:
  5672. [ 636.073899] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5673. [ 636.073902] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5674. [ 636.073910] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5675. [ 636.073920] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5676. [ 636.073959] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5677. [ 636.073966] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5678. [ 636.073975] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5679. [ 636.073980] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5680. [ 636.073990] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5681. [ 636.074002] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5682. [ 636.074013] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5683. [ 636.074019] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5684. [ 636.074030] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5685. [ 636.074042] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5686. [ 636.074047] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5687. [ 636.074052] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5688. [ 636.074062] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5689. [ 636.074072] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5690. [ 636.074083] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5691. [ 636.074093] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5692. [ 636.074097] [<ffffffff810523e6>] kthread+0x96/0xa0
  5693. [ 636.074102] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5694. [ 636.074106] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5695. [ 636.074110] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5696. [ 636.074113] ---[ end trace 15b8c8d16278c20e ]---
  5697. [ 636.077665] ------------[ cut here ]------------
  5698. [ 636.077675] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5699. [ 636.077677] Hardware name: X8ST3
  5700. [ 636.077678] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5701. [ 636.077694] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5702. [ 636.077696] Call Trace:
  5703. [ 636.077700] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5704. [ 636.077703] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5705. [ 636.077711] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5706. [ 636.077721] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5707. [ 636.077728] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5708. [ 636.077735] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5709. [ 636.077741] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5710. [ 636.077745] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5711. [ 636.077753] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5712. [ 636.077763] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5713. [ 636.077773] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5714. [ 636.077776] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5715. [ 636.077786] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5716. [ 636.077796] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5717. [ 636.077799] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5718. [ 636.077802] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5719. [ 636.077811] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5720. [ 636.077820] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5721. [ 636.077829] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5722. [ 636.077837] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5723. [ 636.077840] [<ffffffff810523e6>] kthread+0x96/0xa0
  5724. [ 636.077843] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5725. [ 636.077846] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5726. [ 636.077849] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5727. [ 636.077851] ---[ end trace 15b8c8d16278c20f ]---
  5728. [ 636.081376] ------------[ cut here ]------------
  5729. [ 636.081386] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5730. [ 636.081388] Hardware name: X8ST3
  5731. [ 636.081389] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5732. [ 636.081406] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5733. [ 636.081408] Call Trace:
  5734. [ 636.081412] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5735. [ 636.081415] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5736. [ 636.081423] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5737. [ 636.081433] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5738. [ 636.081440] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5739. [ 636.081446] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5740. [ 636.081453] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5741. [ 636.081457] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5742. [ 636.081465] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5743. [ 636.081475] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5744. [ 636.081485] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5745. [ 636.081488] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5746. [ 636.081498] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5747. [ 636.081508] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5748. [ 636.081511] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5749. [ 636.081514] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5750. [ 636.081523] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5751. [ 636.081532] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5752. [ 636.081541] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5753. [ 636.081550] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5754. [ 636.081553] [<ffffffff810523e6>] kthread+0x96/0xa0
  5755. [ 636.081556] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5756. [ 636.081559] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5757. [ 636.081561] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5758. [ 636.081563] ---[ end trace 15b8c8d16278c210 ]---
  5759. [ 636.085065] ------------[ cut here ]------------
  5760. [ 636.085074] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5761. [ 636.085077] Hardware name: X8ST3
  5762. [ 636.085078] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5763. [ 636.085094] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5764. [ 636.085096] Call Trace:
  5765. [ 636.085100] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5766. [ 636.085104] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5767. [ 636.085111] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5768. [ 636.085121] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5769. [ 636.085128] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5770. [ 636.085135] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5771. [ 636.085141] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5772. [ 636.085145] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5773. [ 636.085153] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5774. [ 636.085163] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5775. [ 636.085173] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5776. [ 636.085177] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5777. [ 636.085187] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5778. [ 636.085196] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5779. [ 636.085200] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5780. [ 636.085203] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5781. [ 636.085212] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5782. [ 636.085221] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5783. [ 636.085229] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5784. [ 636.085238] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5785. [ 636.085241] [<ffffffff810523e6>] kthread+0x96/0xa0
  5786. [ 636.085244] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5787. [ 636.085247] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5788. [ 636.085250] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5789. [ 636.085252] ---[ end trace 15b8c8d16278c211 ]---
  5790. [ 636.088746] ------------[ cut here ]------------
  5791. [ 636.088755] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5792. [ 636.088757] Hardware name: X8ST3
  5793. [ 636.088759] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5794. [ 636.088775] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5795. [ 636.088777] Call Trace:
  5796. [ 636.088781] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5797. [ 636.088784] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5798. [ 636.088792] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5799. [ 636.088802] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5800. [ 636.088809] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5801. [ 636.088815] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5802. [ 636.088822] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5803. [ 636.088826] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5804. [ 636.088834] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5805. [ 636.088844] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5806. [ 636.088853] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5807. [ 636.088857] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5808. [ 636.088867] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5809. [ 636.088876] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5810. [ 636.088880] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5811. [ 636.088883] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5812. [ 636.088892] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5813. [ 636.088901] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5814. [ 636.088909] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5815. [ 636.088918] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5816. [ 636.088993] [<ffffffff810523e6>] kthread+0x96/0xa0
  5817. [ 636.088996] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5818. [ 636.088999] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5819. [ 636.089003] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5820. [ 636.089006] ---[ end trace 15b8c8d16278c212 ]---
  5821. [ 636.092440] ------------[ cut here ]------------
  5822. [ 636.092449] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5823. [ 636.092451] Hardware name: X8ST3
  5824. [ 636.092452] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5825. [ 636.092469] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5826. [ 636.092471] Call Trace:
  5827. [ 636.092475] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5828. [ 636.092478] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5829. [ 636.092485] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5830. [ 636.092495] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5831. [ 636.092502] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5832. [ 636.092509] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5833. [ 636.092515] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5834. [ 636.092519] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5835. [ 636.092527] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5836. [ 636.092537] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5837. [ 636.092547] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5838. [ 636.092550] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5839. [ 636.092560] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5840. [ 636.092569] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5841. [ 636.092573] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5842. [ 636.092576] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5843. [ 636.092585] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5844. [ 636.092594] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5845. [ 636.092602] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5846. [ 636.092611] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5847. [ 636.092614] [<ffffffff810523e6>] kthread+0x96/0xa0
  5848. [ 636.092617] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5849. [ 636.092620] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5850. [ 636.092622] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5851. [ 636.092624] ---[ end trace 15b8c8d16278c213 ]---
  5852. [ 636.096177] ------------[ cut here ]------------
  5853. [ 636.096187] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5854. [ 636.096189] Hardware name: X8ST3
  5855. [ 636.096190] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5856. [ 636.096207] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5857. [ 636.096209] Call Trace:
  5858. [ 636.096213] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5859. [ 636.096216] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5860. [ 636.096223] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5861. [ 636.096233] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5862. [ 636.096241] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5863. [ 636.096247] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5864. [ 636.096254] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5865. [ 636.096257] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5866. [ 636.096266] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5867. [ 636.096275] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5868. [ 636.096285] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5869. [ 636.096289] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5870. [ 636.096298] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5871. [ 636.096308] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5872. [ 636.096312] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5873. [ 636.096315] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5874. [ 636.096323] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5875. [ 636.096332] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5876. [ 636.096341] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5877. [ 636.096350] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5878. [ 636.096353] [<ffffffff810523e6>] kthread+0x96/0xa0
  5879. [ 636.096356] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5880. [ 636.096359] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5881. [ 636.096361] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5882. [ 636.096363] ---[ end trace 15b8c8d16278c214 ]---
  5883. [ 636.100006] ------------[ cut here ]------------
  5884. [ 636.100016] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5885. [ 636.100018] Hardware name: X8ST3
  5886. [ 636.100020] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5887. [ 636.100036] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5888. [ 636.100038] Call Trace:
  5889. [ 636.100042] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5890. [ 636.100046] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5891. [ 636.100053] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5892. [ 636.100063] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5893. [ 636.100070] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5894. [ 636.100077] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5895. [ 636.100084] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5896. [ 636.100087] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5897. [ 636.100096] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5898. [ 636.100105] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5899. [ 636.100115] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5900. [ 636.100119] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5901. [ 636.100128] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5902. [ 636.100138] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5903. [ 636.100142] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5904. [ 636.100145] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5905. [ 636.100154] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5906. [ 636.100162] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5907. [ 636.100171] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5908. [ 636.100180] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5909. [ 636.100183] [<ffffffff810523e6>] kthread+0x96/0xa0
  5910. [ 636.100186] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5911. [ 636.100189] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5912. [ 636.100191] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5913. [ 636.100193] ---[ end trace 15b8c8d16278c215 ]---
  5914. [ 636.103674] ------------[ cut here ]------------
  5915. [ 636.103683] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5916. [ 636.103685] Hardware name: X8ST3
  5917. [ 636.103686] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5918. [ 636.103703] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5919. [ 636.103705] Call Trace:
  5920. [ 636.103709] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5921. [ 636.103712] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5922. [ 636.103720] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5923. [ 636.103730] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5924. [ 636.103737] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5925. [ 636.103743] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5926. [ 636.103750] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5927. [ 636.103754] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5928. [ 636.103762] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5929. [ 636.103772] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5930. [ 636.103781] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5931. [ 636.103785] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5932. [ 636.103795] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5933. [ 636.103804] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5934. [ 636.103808] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5935. [ 636.103811] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5936. [ 636.103820] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5937. [ 636.103829] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5938. [ 636.103837] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5939. [ 636.103846] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5940. [ 636.103849] [<ffffffff810523e6>] kthread+0x96/0xa0
  5941. [ 636.103852] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5942. [ 636.103855] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5943. [ 636.103858] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5944. [ 636.103860] ---[ end trace 15b8c8d16278c216 ]---
  5945. [ 636.107389] ------------[ cut here ]------------
  5946. [ 636.107399] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5947. [ 636.107401] Hardware name: X8ST3
  5948. [ 636.107402] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5949. [ 636.107419] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5950. [ 636.107421] Call Trace:
  5951. [ 636.107425] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5952. [ 636.107428] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5953. [ 636.107435] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5954. [ 636.107445] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5955. [ 636.107452] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5956. [ 636.107459] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5957. [ 636.107465] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5958. [ 636.107469] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5959. [ 636.107477] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5960. [ 636.107487] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5961. [ 636.107497] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5962. [ 636.107500] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5963. [ 636.107510] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5964. [ 636.107520] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5965. [ 636.107523] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5966. [ 636.107527] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5967. [ 636.107535] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5968. [ 636.107544] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  5969. [ 636.107553] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5970. [ 636.107562] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5971. [ 636.107564] [<ffffffff810523e6>] kthread+0x96/0xa0
  5972. [ 636.107567] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5973. [ 636.107570] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5974. [ 636.107573] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5975. [ 636.107575] ---[ end trace 15b8c8d16278c217 ]---
  5976. [ 636.111125] ------------[ cut here ]------------
  5977. [ 636.111134] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5978. [ 636.111137] Hardware name: X8ST3
  5979. [ 636.111138] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5980. [ 636.111154] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5981. [ 636.111156] Call Trace:
  5982. [ 636.111161] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5983. [ 636.111164] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5984. [ 636.111171] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5985. [ 636.111181] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5986. [ 636.111189] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  5987. [ 636.111195] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5988. [ 636.111202] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5989. [ 636.111205] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5990. [ 636.111214] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5991. [ 636.111223] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  5992. [ 636.111233] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5993. [ 636.111237] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5994. [ 636.111247] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5995. [ 636.111256] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5996. [ 636.111260] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5997. [ 636.111263] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5998. [ 636.111272] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5999. [ 636.111281] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  6000. [ 636.111289] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6001. [ 636.111298] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6002. [ 636.111301] [<ffffffff810523e6>] kthread+0x96/0xa0
  6003. [ 636.111304] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6004. [ 636.111307] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6005. [ 636.111310] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6006. [ 636.111312] ---[ end trace 15b8c8d16278c218 ]---
  6007. [ 636.114952] ------------[ cut here ]------------
  6008. [ 636.114961] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6009. [ 636.114963] Hardware name: X8ST3
  6010. [ 636.114965] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6011. [ 636.114981] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6012. [ 636.114983] Call Trace:
  6013. [ 636.114987] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6014. [ 636.114991] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6015. [ 636.114998] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6016. [ 636.115008] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6017. [ 636.115015] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  6018. [ 636.115022] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6019. [ 636.115028] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6020. [ 636.115032] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6021. [ 636.115040] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6022. [ 636.115050] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  6023. [ 636.115060] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6024. [ 636.115063] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6025. [ 636.115073] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6026. [ 636.115083] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6027. [ 636.115086] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6028. [ 636.115090] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6029. [ 636.115098] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6030. [ 636.115107] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  6031. [ 636.115116] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6032. [ 636.115125] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6033. [ 636.115128] [<ffffffff810523e6>] kthread+0x96/0xa0
  6034. [ 636.115131] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6035. [ 636.115134] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6036. [ 636.115136] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6037. [ 636.115138] ---[ end trace 15b8c8d16278c219 ]---
  6038. [ 636.118524] ------------[ cut here ]------------
  6039. [ 636.118533] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6040. [ 636.118536] Hardware name: X8ST3
  6041. [ 636.118537] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6042. [ 636.118553] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6043. [ 636.118555] Call Trace:
  6044. [ 636.118560] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6045. [ 636.118563] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6046. [ 636.118570] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6047. [ 636.118580] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6048. [ 636.118588] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  6049. [ 636.118594] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6050. [ 636.118601] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6051. [ 636.118605] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6052. [ 636.118613] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6053. [ 636.118622] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  6054. [ 636.118632] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6055. [ 636.118636] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6056. [ 636.118646] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6057. [ 636.118655] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6058. [ 636.118659] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6059. [ 636.118662] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6060. [ 636.118671] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6061. [ 636.118679] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  6062. [ 636.118688] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6063. [ 636.118697] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6064. [ 636.118700] [<ffffffff810523e6>] kthread+0x96/0xa0
  6065. [ 636.118703] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6066. [ 636.118706] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6067. [ 636.118709] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6068. [ 636.118710] ---[ end trace 15b8c8d16278c21a ]---
  6069. [ 636.122249] ------------[ cut here ]------------
  6070. [ 636.122259] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6071. [ 636.122261] Hardware name: X8ST3
  6072. [ 636.122262] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6073. [ 636.122278] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6074. [ 636.122280] Call Trace:
  6075. [ 636.122284] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6076. [ 636.122288] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6077. [ 636.122295] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6078. [ 636.122305] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6079. [ 636.122312] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  6080. [ 636.122319] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6081. [ 636.122325] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6082. [ 636.122329] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6083. [ 636.122337] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6084. [ 636.122347] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  6085. [ 636.122356] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6086. [ 636.122360] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6087. [ 636.122370] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6088. [ 636.122379] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6089. [ 636.122383] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6090. [ 636.122386] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6091. [ 636.122395] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6092. [ 636.122403] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  6093. [ 636.122412] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6094. [ 636.122421] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6095. [ 636.122423] [<ffffffff810523e6>] kthread+0x96/0xa0
  6096. [ 636.122426] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6097. [ 636.122429] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6098. [ 636.122432] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6099. [ 636.122434] ---[ end trace 15b8c8d16278c21b ]---
  6100. [ 636.125951] ------------[ cut here ]------------
  6101. [ 636.125961] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6102. [ 636.125963] Hardware name: X8ST3
  6103. [ 636.125964] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6104. [ 636.125981] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6105. [ 636.125983] Call Trace:
  6106. [ 636.125987] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6107. [ 636.125990] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6108. [ 636.125998] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6109. [ 636.126008] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6110. [ 636.126015] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  6111. [ 636.126021] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6112. [ 636.126028] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6113. [ 636.126032] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6114. [ 636.126040] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6115. [ 636.126050] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  6116. [ 636.126059] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6117. [ 636.126063] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6118. [ 636.126073] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6119. [ 636.126082] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6120. [ 636.126086] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6121. [ 636.126089] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6122. [ 636.126098] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6123. [ 636.126107] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  6124. [ 636.126115] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6125. [ 636.126124] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6126. [ 636.126127] [<ffffffff810523e6>] kthread+0x96/0xa0
  6127. [ 636.126130] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6128. [ 636.126133] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6129. [ 636.126136] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6130. [ 636.126138] ---[ end trace 15b8c8d16278c21c ]---
  6131. [ 636.129491] ------------[ cut here ]------------
  6132. [ 636.129500] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6133. [ 636.129503] Hardware name: X8ST3
  6134. [ 636.129504] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6135. [ 636.129520] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6136. [ 636.129522] Call Trace:
  6137. [ 636.129527] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6138. [ 636.129530] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6139. [ 636.129537] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6140. [ 636.129547] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6141. [ 636.129554] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  6142. [ 636.129561] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6143. [ 636.129568] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6144. [ 636.129571] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6145. [ 636.129580] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6146. [ 636.129589] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  6147. [ 636.129599] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6148. [ 636.129603] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6149. [ 636.129613] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6150. [ 636.129622] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6151. [ 636.129626] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6152. [ 636.129629] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6153. [ 636.129638] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6154. [ 636.129647] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  6155. [ 636.129656] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6156. [ 636.129664] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6157. [ 636.129667] [<ffffffff810523e6>] kthread+0x96/0xa0
  6158. [ 636.129670] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6159. [ 636.129673] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6160. [ 636.129676] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6161. [ 636.129678] ---[ end trace 15b8c8d16278c21d ]---
  6162. [ 636.133181] ------------[ cut here ]------------
  6163. [ 636.133191] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6164. [ 636.133193] Hardware name: X8ST3
  6165. [ 636.133194] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6166. [ 636.133211] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6167. [ 636.133213] Call Trace:
  6168. [ 636.133217] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6169. [ 636.133220] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6170. [ 636.133227] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6171. [ 636.133237] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6172. [ 636.133244] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  6173. [ 636.133251] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6174. [ 636.133258] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6175. [ 636.133261] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6176. [ 636.133269] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6177. [ 636.133279] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  6178. [ 636.133289] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6179. [ 636.133292] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6180. [ 636.133302] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6181. [ 636.133312] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6182. [ 636.133316] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6183. [ 636.133319] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6184. [ 636.133327] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6185. [ 636.133336] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  6186. [ 636.133345] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6187. [ 636.133354] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6188. [ 636.133357] [<ffffffff810523e6>] kthread+0x96/0xa0
  6189. [ 636.133360] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6190. [ 636.133363] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6191. [ 636.133365] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6192. [ 636.133367] ---[ end trace 15b8c8d16278c21e ]---
  6193. [ 636.136883] ------------[ cut here ]------------
  6194. [ 636.136893] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6195. [ 636.136895] Hardware name: X8ST3
  6196. [ 636.136896] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6197. [ 636.136913] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6198. [ 636.136915] Call Trace:
  6199. [ 636.136919] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6200. [ 636.136957] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6201. [ 636.136965] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6202. [ 636.136977] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6203. [ 636.136986] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  6204. [ 636.136995] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6205. [ 636.137003] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6206. [ 636.137008] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6207. [ 636.137018] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6208. [ 636.137030] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  6209. [ 636.137041] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6210. [ 636.137046] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6211. [ 636.137057] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6212. [ 636.137069] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6213. [ 636.137074] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6214. [ 636.137078] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6215. [ 636.137089] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6216. [ 636.137099] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  6217. [ 636.137110] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6218. [ 636.137120] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6219. [ 636.137124] [<ffffffff810523e6>] kthread+0x96/0xa0
  6220. [ 636.137129] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6221. [ 636.137133] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6222. [ 636.137137] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6223. [ 636.137141] ---[ end trace 15b8c8d16278c21f ]---
  6224. [ 636.140574] ------------[ cut here ]------------
  6225. [ 636.140584] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6226. [ 636.140586] Hardware name: X8ST3
  6227. [ 636.140587] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6228. [ 636.140604] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6229. [ 636.140606] Call Trace:
  6230. [ 636.140610] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6231. [ 636.140613] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6232. [ 636.140621] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6233. [ 636.140630] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6234. [ 636.140638] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  6235. [ 636.140644] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6236. [ 636.140651] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6237. [ 636.140655] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6238. [ 636.140663] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6239. [ 636.140672] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  6240. [ 636.140682] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6241. [ 636.140686] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6242. [ 636.140696] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6243. [ 636.140705] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6244. [ 636.140709] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6245. [ 636.140712] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6246. [ 636.140721] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6247. [ 636.140729] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  6248. [ 636.140738] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6249. [ 636.140747] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6250. [ 636.140750] [<ffffffff810523e6>] kthread+0x96/0xa0
  6251. [ 636.140753] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6252. [ 636.140756] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6253. [ 636.140758] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6254. [ 636.140760] ---[ end trace 15b8c8d16278c220 ]---
  6255. [ 636.144399] ------------[ cut here ]------------
  6256. [ 636.144409] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6257. [ 636.144411] Hardware name: X8ST3
  6258. [ 636.144412] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6259. [ 636.144428] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6260. [ 636.144430] Call Trace:
  6261. [ 636.144435] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6262. [ 636.144438] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6263. [ 636.144445] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6264. [ 636.144455] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6265. [ 636.144462] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  6266. [ 636.144469] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6267. [ 636.144476] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6268. [ 636.144479] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6269. [ 636.144487] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6270. [ 636.144497] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  6271. [ 636.144507] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6272. [ 636.144510] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6273. [ 636.144520] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6274. [ 636.144530] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6275. [ 636.144534] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6276. [ 636.144537] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6277. [ 636.144546] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6278. [ 636.144554] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  6279. [ 636.144563] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6280. [ 636.144572] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6281. [ 636.144575] [<ffffffff810523e6>] kthread+0x96/0xa0
  6282. [ 636.144578] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6283. [ 636.144581] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6284. [ 636.144583] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6285. [ 636.144585] ---[ end trace 15b8c8d16278c221 ]---
  6286. [ 636.148005] ------------[ cut here ]------------
  6287. [ 636.148015] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6288. [ 636.148017] Hardware name: X8ST3
  6289. [ 636.148018] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6290. [ 636.148035] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6291. [ 636.148037] Call Trace:
  6292. [ 636.148041] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6293. [ 636.148044] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6294. [ 636.148052] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6295. [ 636.148062] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6296. [ 636.148069] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  6297. [ 636.148075] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6298. [ 636.148082] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6299. [ 636.148086] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6300. [ 636.148094] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6301. [ 636.148104] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  6302. [ 636.148113] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6303. [ 636.148117] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6304. [ 636.148127] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6305. [ 636.148136] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6306. [ 636.148140] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6307. [ 636.148143] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6308. [ 636.148152] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6309. [ 636.148161] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  6310. [ 636.148170] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6311. [ 636.148178] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6312. [ 636.148181] [<ffffffff810523e6>] kthread+0x96/0xa0
  6313. [ 636.148184] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6314. [ 636.148187] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6315. [ 636.148190] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6316. [ 636.148192] ---[ end trace 15b8c8d16278c222 ]---
  6317. [ 636.151583] ------------[ cut here ]------------
  6318. [ 636.151592] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6319. [ 636.151594] Hardware name: X8ST3
  6320. [ 636.151596] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6321. [ 636.151612] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6322. [ 636.151614] Call Trace:
  6323. [ 636.151618] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6324. [ 636.151621] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6325. [ 636.151629] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6326. [ 636.151639] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6327. [ 636.151646] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  6328. [ 636.151652] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6329. [ 636.151659] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6330. [ 636.151663] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6331. [ 636.151671] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6332. [ 636.151680] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  6333. [ 636.151690] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6334. [ 636.151693] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6335. [ 636.151703] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6336. [ 636.151713] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6337. [ 636.151716] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6338. [ 636.151719] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6339. [ 636.151728] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6340. [ 636.151737] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  6341. [ 636.151745] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6342. [ 636.151754] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6343. [ 636.151757] [<ffffffff810523e6>] kthread+0x96/0xa0
  6344. [ 636.151760] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6345. [ 636.151763] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6346. [ 636.151765] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6347. [ 636.151767] ---[ end trace 15b8c8d16278c223 ]---
  6348. [ 636.155266] ------------[ cut here ]------------
  6349. [ 636.155276] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6350. [ 636.155278] Hardware name: X8ST3
  6351. [ 636.155279] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6352. [ 636.155296] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6353. [ 636.155297] Call Trace:
  6354. [ 636.155302] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6355. [ 636.155305] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6356. [ 636.155312] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6357. [ 636.155322] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6358. [ 636.155330] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  6359. [ 636.155336] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6360. [ 636.155343] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6361. [ 636.155346] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6362. [ 636.155354] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6363. [ 636.155364] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  6364. [ 636.155374] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6365. [ 636.155377] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6366. [ 636.155387] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6367. [ 636.155397] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6368. [ 636.155401] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6369. [ 636.155404] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6370. [ 636.155413] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6371. [ 636.155421] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  6372. [ 636.155430] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6373. [ 636.155439] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6374. [ 636.155442] [<ffffffff810523e6>] kthread+0x96/0xa0
  6375. [ 636.155445] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6376. [ 636.155448] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6377. [ 636.155451] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6378. [ 636.155452] ---[ end trace 15b8c8d16278c224 ]---
  6379. [ 636.158964] ------------[ cut here ]------------
  6380. [ 636.158974] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6381. [ 636.158976] Hardware name: X8ST3
  6382. [ 636.158977] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6383. [ 636.158994] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6384. [ 636.158996] Call Trace:
  6385. [ 636.159000] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6386. [ 636.159003] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6387. [ 636.159011] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6388. [ 636.159021] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6389. [ 636.159028] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  6390. [ 636.159034] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6391. [ 636.159041] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6392. [ 636.159045] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6393. [ 636.159053] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6394. [ 636.159063] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  6395. [ 636.159072] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6396. [ 636.159076] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6397. [ 636.159086] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6398. [ 636.159095] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6399. [ 636.159099] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6400. [ 636.159102] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6401. [ 636.159111] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6402. [ 636.159119] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  6403. [ 636.159128] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6404. [ 636.159137] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6405. [ 636.159140] [<ffffffff810523e6>] kthread+0x96/0xa0
  6406. [ 636.159143] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6407. [ 636.159146] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6408. [ 636.159148] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6409. [ 636.159150] ---[ end trace 15b8c8d16278c225 ]---
  6410. [ 636.162736] ------------[ cut here ]------------
  6411. [ 636.162746] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6412. [ 636.162748] Hardware name: X8ST3
  6413. [ 636.162749] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6414. [ 636.162766] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6415. [ 636.162768] Call Trace:
  6416. [ 636.162772] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6417. [ 636.162775] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6418. [ 636.162783] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6419. [ 636.162792] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6420. [ 636.162800] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  6421. [ 636.162806] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6422. [ 636.162813] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6423. [ 636.162816] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6424. [ 636.162825] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6425. [ 636.162834] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  6426. [ 636.162844] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6427. [ 636.162848] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6428. [ 636.162858] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6429. [ 636.162867] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6430. [ 636.162871] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6431. [ 636.162874] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6432. [ 636.162883] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6433. [ 636.162891] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  6434. [ 636.162900] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6435. [ 636.162909] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6436. [ 636.162912] [<ffffffff810523e6>] kthread+0x96/0xa0
  6437. [ 636.162915] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6438. [ 636.162918] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6439. [ 636.162957] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6440. [ 636.162958] ---[ end trace 15b8c8d16278c226 ]---
  6441. [ 636.167134] ------------[ cut here ]------------
  6442. [ 636.167143] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6443. [ 636.167146] Hardware name: X8ST3
  6444. [ 636.167147] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6445. [ 636.167163] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6446. [ 636.167165] Call Trace:
  6447. [ 636.167169] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6448. [ 636.167172] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6449. [ 636.167180] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6450. [ 636.167190] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6451. [ 636.167197] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  6452. [ 636.167203] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6453. [ 636.167210] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6454. [ 636.167213] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6455. [ 636.167221] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6456. [ 636.167231] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  6457. [ 636.167241] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6458. [ 636.167244] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6459. [ 636.167254] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6460. [ 636.167264] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6461. [ 636.167267] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6462. [ 636.167270] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6463. [ 636.167279] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6464. [ 636.167287] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  6465. [ 636.167296] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6466. [ 636.167305] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6467. [ 636.167308] [<ffffffff810523e6>] kthread+0x96/0xa0
  6468. [ 636.167311] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6469. [ 636.167314] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6470. [ 636.167316] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6471. [ 636.167318] ---[ end trace 15b8c8d16278c227 ]---
  6472. [ 636.172014] ------------[ cut here ]------------
  6473. [ 636.172024] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6474. [ 636.172026] Hardware name: X8ST3
  6475. [ 636.172027] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6476. [ 636.172043] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6477. [ 636.172045] Call Trace:
  6478. [ 636.172050] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6479. [ 636.172053] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6480. [ 636.172060] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6481. [ 636.172070] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6482. [ 636.172078] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  6483. [ 636.172084] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6484. [ 636.172091] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6485. [ 636.172094] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6486. [ 636.172103] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6487. [ 636.172112] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  6488. [ 636.172122] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6489. [ 636.172126] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6490. [ 636.172136] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6491. [ 636.172145] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6492. [ 636.172149] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6493. [ 636.172152] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6494. [ 636.172161] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6495. [ 636.172170] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  6496. [ 636.172178] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6497. [ 636.172187] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6498. [ 636.172190] [<ffffffff810523e6>] kthread+0x96/0xa0
  6499. [ 636.172193] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6500. [ 636.172196] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6501. [ 636.172199] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6502. [ 636.172201] ---[ end trace 15b8c8d16278c228 ]---
  6503. [ 636.176482] ------------[ cut here ]------------
  6504. [ 636.176491] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6505. [ 636.176494] Hardware name: X8ST3
  6506. [ 636.176495] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6507. [ 636.176511] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6508. [ 636.176513] Call Trace:
  6509. [ 636.176517] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6510. [ 636.176521] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6511. [ 636.176528] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6512. [ 636.176538] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6513. [ 636.176545] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  6514. [ 636.176552] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6515. [ 636.176558] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6516. [ 636.176562] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6517. [ 636.176570] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6518. [ 636.176580] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  6519. [ 636.176590] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6520. [ 636.176593] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6521. [ 636.176603] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6522. [ 636.176613] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6523. [ 636.176617] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6524. [ 636.176620] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6525. [ 636.176629] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6526. [ 636.176637] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  6527. [ 636.176646] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6528. [ 636.176655] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6529. [ 636.176658] [<ffffffff810523e6>] kthread+0x96/0xa0
  6530. [ 636.176661] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6531. [ 636.176664] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6532. [ 636.176666] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6533. [ 636.176668] ---[ end trace 15b8c8d16278c229 ]---
  6534. [ 636.181445] ------------[ cut here ]------------
  6535. [ 636.181455] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6536. [ 636.181457] Hardware name: X8ST3
  6537. [ 636.181458] Modules linked in: btrfs zlib_deflate lzo_compress raid456 async_raid6_recov async_pq raid6_pq async_xor xor async_memcpy async_tx md_mod target_core_mod configfs ahci libahci e1000e mptsas i7core_edac mptscsih mptbase scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6538. [ 636.181476] Pid: 6426, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6539. [ 636.181478] Call Trace:
  6540. [ 636.181482] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6541. [ 636.181486] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6542. [ 636.181494] [<ffffffffa0142d68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6543. [ 636.181504] [<ffffffffa016ecd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6544. [ 636.181512] [<ffffffffa0138dda>] split_leaf+0x12a/0x740 [btrfs]
  6545. [ 636.181519] [<ffffffffa013550f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6546. [ 636.181526] [<ffffffffa013ad1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6547. [ 636.181530] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6548. [ 636.181539] [<ffffffffa014aeb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6549. [ 636.181549] [<ffffffffa0157871>] add_pending_csums+0x41/0x60 [btrfs]
  6550. [ 636.181559] [<ffffffffa016208c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6551. [ 636.181563] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6552. [ 636.181574] [<ffffffffa01621c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6553. [ 636.181584] [<ffffffffa0170deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6554. [ 636.181588] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6555. [ 636.181591] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6556. [ 636.181601] [<ffffffffa014fd94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6557. [ 636.181610] [<ffffffffa017bbfc>] worker_loop+0x14c/0x500 [btrfs]
  6558. [ 636.181619] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6559. [ 636.181629] [<ffffffffa017bab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6560. [ 636.181632] [<ffffffff810523e6>] kthread+0x96/0xa0
  6561. [ 636.181635] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6562. [ 636.181638] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6563. [ 636.181641] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6564. [ 636.181643] ---[ end trace 15b8c8d16278c22a ]---
  6565.  
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