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  1. andler
  2. [ 871.182306] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3. [ 871.182308] Call Trace:
  4. [ 871.182312] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5. [ 871.182315] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6. [ 871.182324] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  7. [ 871.182334] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  8. [ 871.182342] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  9. [ 871.182349] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  10. [ 871.182356] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  11. [ 871.182360] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  12. [ 871.182369] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  13. [ 871.182379] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  14. [ 871.182389] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  15. [ 871.182393] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  16. [ 871.182404] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  17. [ 871.182414] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  18. [ 871.182418] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  19. [ 871.182421] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  20. [ 871.182430] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  21. [ 871.182440] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  22. [ 871.182449] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  23. [ 871.182459] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  24. [ 871.182462] [<ffffffff810523e6>] kthread+0x96/0xa0
  25. [ 871.182465] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  26. [ 871.182468] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  27. [ 871.182471] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  28. [ 871.182473] ---[ end trace d1535c397c7740a7 ]---
  29. [ 871.187249] ------------[ cut here ]------------
  30. [ 871.187260] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  31. [ 871.187262] Hardware name: X8ST3
  32. [ 871.187263] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  33. [ 871.187281] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  34. [ 871.187283] Call Trace:
  35. [ 871.187287] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  36. [ 871.187291] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  37. [ 871.187299] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  38. [ 871.187309] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  39. [ 871.187317] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  40. [ 871.187324] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  41. [ 871.187331] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  42. [ 871.187335] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  43. [ 871.187343] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  44. [ 871.187354] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  45. [ 871.187364] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  46. [ 871.187368] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  47. [ 871.187379] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  48. [ 871.187389] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  49. [ 871.187393] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  50. [ 871.187396] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  51. [ 871.187406] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  52. [ 871.187415] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  53. [ 871.187425] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  54. [ 871.187434] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  55. [ 871.187437] [<ffffffff810523e6>] kthread+0x96/0xa0
  56. [ 871.187440] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  57. [ 871.187443] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  58. [ 871.187446] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  59. [ 871.187448] ---[ end trace d1535c397c7740a8 ]---
  60. [ 871.191969] ------------[ cut here ]------------
  61. [ 871.191986] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  62. [ 871.191990] Hardware name: X8ST3
  63. [ 871.191992] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  64. [ 871.192016] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  65. [ 871.192018] Call Trace:
  66. [ 871.192022] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  67. [ 871.192026] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  68. [ 871.192034] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  69. [ 871.192044] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  70. [ 871.192052] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  71. [ 871.192059] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  72. [ 871.192066] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  73. [ 871.192070] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  74. [ 871.192079] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  75. [ 871.192089] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  76. [ 871.192100] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  77. [ 871.192103] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  78. [ 871.192114] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  79. [ 871.192124] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  80. [ 871.192128] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  81. [ 871.192131] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  82. [ 871.192141] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  83. [ 871.192150] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  84. [ 871.192159] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  85. [ 871.192169] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  86. [ 871.192172] [<ffffffff810523e6>] kthread+0x96/0xa0
  87. [ 871.192175] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  88. [ 871.192178] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  89. [ 871.192181] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  90. [ 871.192183] ---[ end trace d1535c397c7740a9 ]---
  91. [ 871.196512] ------------[ cut here ]------------
  92. [ 871.196522] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  93. [ 871.196525] Hardware name: X8ST3
  94. [ 871.196526] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  95. [ 871.196543] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  96. [ 871.196546] Call Trace:
  97. [ 871.196550] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  98. [ 871.196553] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  99. [ 871.196561] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  100. [ 871.196572] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  101. [ 871.196580] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  102. [ 871.196586] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  103. [ 871.196594] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  104. [ 871.196598] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  105. [ 871.196606] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  106. [ 871.196617] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  107. [ 871.196627] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  108. [ 871.196631] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  109. [ 871.196642] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  110. [ 871.196652] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  111. [ 871.196656] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  112. [ 871.196659] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  113. [ 871.196669] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  114. [ 871.196678] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  115. [ 871.196688] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  116. [ 871.196697] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  117. [ 871.196700] [<ffffffff810523e6>] kthread+0x96/0xa0
  118. [ 871.196703] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  119. [ 871.196707] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  120. [ 871.196709] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  121. [ 871.196711] ---[ end trace d1535c397c7740aa ]---
  122. [ 871.201131] ------------[ cut here ]------------
  123. [ 871.201141] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  124. [ 871.201144] Hardware name: X8ST3
  125. [ 871.201145] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  126. [ 871.201162] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  127. [ 871.201164] Call Trace:
  128. [ 871.201169] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  129. [ 871.201172] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  130. [ 871.201180] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  131. [ 871.201191] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  132. [ 871.201199] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  133. [ 871.201206] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  134. [ 871.201213] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  135. [ 871.201217] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  136. [ 871.201226] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  137. [ 871.201236] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  138. [ 871.201246] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  139. [ 871.201250] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  140. [ 871.201261] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  141. [ 871.201271] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  142. [ 871.201275] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  143. [ 871.201278] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  144. [ 871.201288] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  145. [ 871.201297] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  146. [ 871.201306] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  147. [ 871.201316] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  148. [ 871.201319] [<ffffffff810523e6>] kthread+0x96/0xa0
  149. [ 871.201322] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  150. [ 871.201325] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  151. [ 871.201328] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  152. [ 871.201330] ---[ end trace d1535c397c7740ab ]---
  153. [ 871.205475] ------------[ cut here ]------------
  154. [ 871.205486] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  155. [ 871.205488] Hardware name: X8ST3
  156. [ 871.205489] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  157. [ 871.205507] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  158. [ 871.205509] Call Trace:
  159. [ 871.205513] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  160. [ 871.205517] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  161. [ 871.205525] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  162. [ 871.205535] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  163. [ 871.205543] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  164. [ 871.205550] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  165. [ 871.205557] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  166. [ 871.205561] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  167. [ 871.205570] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  168. [ 871.205580] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  169. [ 871.205591] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  170. [ 871.205595] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  171. [ 871.205605] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  172. [ 871.205615] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  173. [ 871.205619] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  174. [ 871.205623] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  175. [ 871.205632] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  176. [ 871.205641] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  177. [ 871.205651] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  178. [ 871.205660] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  179. [ 871.205663] [<ffffffff810523e6>] kthread+0x96/0xa0
  180. [ 871.205667] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  181. [ 871.205670] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  182. [ 871.205673] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  183. [ 871.205675] ---[ end trace d1535c397c7740ac ]---
  184. [ 871.209619] ------------[ cut here ]------------
  185. [ 871.209629] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  186. [ 871.209632] Hardware name: X8ST3
  187. [ 871.209633] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  188. [ 871.209650] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  189. [ 871.209652] Call Trace:
  190. [ 871.209657] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  191. [ 871.209660] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  192. [ 871.209668] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  193. [ 871.209679] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  194. [ 871.209687] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  195. [ 871.209693] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  196. [ 871.209701] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  197. [ 871.209704] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  198. [ 871.209713] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  199. [ 871.209724] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  200. [ 871.209734] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  201. [ 871.209738] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  202. [ 871.209748] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  203. [ 871.209759] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  204. [ 871.209762] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  205. [ 871.209766] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  206. [ 871.209775] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  207. [ 871.209784] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  208. [ 871.209794] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  209. [ 871.209803] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  210. [ 871.209806] [<ffffffff810523e6>] kthread+0x96/0xa0
  211. [ 871.209810] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  212. [ 871.209813] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  213. [ 871.209816] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  214. [ 871.209818] ---[ end trace d1535c397c7740ad ]---
  215. [ 871.213726] ------------[ cut here ]------------
  216. [ 871.213737] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  217. [ 871.213739] Hardware name: X8ST3
  218. [ 871.213740] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  219. [ 871.213758] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  220. [ 871.213760] Call Trace:
  221. [ 871.213764] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  222. [ 871.213768] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  223. [ 871.213776] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  224. [ 871.213786] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  225. [ 871.213794] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  226. [ 871.213801] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  227. [ 871.213808] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  228. [ 871.213812] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  229. [ 871.213821] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  230. [ 871.213831] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  231. [ 871.213842] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  232. [ 871.213846] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  233. [ 871.213856] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  234. [ 871.213866] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  235. [ 871.213870] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  236. [ 871.213934] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  237. [ 871.213944] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  238. [ 871.213955] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  239. [ 871.213967] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  240. [ 871.213978] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  241. [ 871.213984] [<ffffffff810523e6>] kthread+0x96/0xa0
  242. [ 871.213989] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  243. [ 871.213993] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  244. [ 871.213998] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  245. [ 871.214001] ---[ end trace d1535c397c7740ae ]---
  246. [ 871.217745] ------------[ cut here ]------------
  247. [ 871.217755] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  248. [ 871.217757] Hardware name: X8ST3
  249. [ 871.217758] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  250. [ 871.217775] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  251. [ 871.217777] Call Trace:
  252. [ 871.217781] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  253. [ 871.217784] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  254. [ 871.217792] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  255. [ 871.217802] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  256. [ 871.217809] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  257. [ 871.217815] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  258. [ 871.217822] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  259. [ 871.217826] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  260. [ 871.217834] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  261. [ 871.217844] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  262. [ 871.217854] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  263. [ 871.217857] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  264. [ 871.217867] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  265. [ 871.217877] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  266. [ 871.217953] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  267. [ 871.217956] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  268. [ 871.217965] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  269. [ 871.217976] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  270. [ 871.217986] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  271. [ 871.217997] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  272. [ 871.218001] [<ffffffff810523e6>] kthread+0x96/0xa0
  273. [ 871.218006] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  274. [ 871.218010] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  275. [ 871.218015] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  276. [ 871.218018] ---[ end trace d1535c397c7740af ]---
  277. [ 871.221788] ------------[ cut here ]------------
  278. [ 871.221798] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  279. [ 871.221800] Hardware name: X8ST3
  280. [ 871.221801] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  281. [ 871.221818] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  282. [ 871.221820] Call Trace:
  283. [ 871.221824] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  284. [ 871.221827] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  285. [ 871.221835] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  286. [ 871.221844] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  287. [ 871.221852] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  288. [ 871.221858] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  289. [ 871.221865] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  290. [ 871.221868] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  291. [ 871.221877] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  292. [ 871.221936] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  293. [ 871.221946] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  294. [ 871.221952] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  295. [ 871.221963] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  296. [ 871.221975] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  297. [ 871.221980] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  298. [ 871.221985] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  299. [ 871.221995] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  300. [ 871.222005] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  301. [ 871.222015] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  302. [ 871.222026] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  303. [ 871.222030] [<ffffffff810523e6>] kthread+0x96/0xa0
  304. [ 871.222035] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  305. [ 871.222039] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  306. [ 871.222043] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  307. [ 871.222047] ---[ end trace d1535c397c7740b0 ]---
  308. [ 871.225962] ------------[ cut here ]------------
  309. [ 871.225979] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  310. [ 871.225983] Hardware name: X8ST3
  311. [ 871.225985] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  312. [ 871.226010] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  313. [ 871.226011] Call Trace:
  314. [ 871.226015] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  315. [ 871.226019] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  316. [ 871.226026] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  317. [ 871.226036] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  318. [ 871.226043] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  319. [ 871.226050] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  320. [ 871.226057] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  321. [ 871.226060] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  322. [ 871.226069] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  323. [ 871.226078] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  324. [ 871.226088] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  325. [ 871.226092] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  326. [ 871.226102] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  327. [ 871.226111] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  328. [ 871.226115] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  329. [ 871.226118] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  330. [ 871.226127] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  331. [ 871.226136] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  332. [ 871.226145] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  333. [ 871.226153] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  334. [ 871.226156] [<ffffffff810523e6>] kthread+0x96/0xa0
  335. [ 871.226159] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  336. [ 871.226162] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  337. [ 871.226165] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  338. [ 871.226167] ---[ end trace d1535c397c7740b1 ]---
  339. [ 871.230089] ------------[ cut here ]------------
  340. [ 871.230099] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  341. [ 871.230101] Hardware name: X8ST3
  342. [ 871.230102] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  343. [ 871.230119] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  344. [ 871.230121] Call Trace:
  345. [ 871.230125] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  346. [ 871.230128] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  347. [ 871.230136] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  348. [ 871.230146] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  349. [ 871.230153] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  350. [ 871.230159] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  351. [ 871.230166] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  352. [ 871.230170] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  353. [ 871.230178] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  354. [ 871.230188] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  355. [ 871.230197] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  356. [ 871.230201] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  357. [ 871.230211] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  358. [ 871.230220] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  359. [ 871.230224] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  360. [ 871.230227] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  361. [ 871.230236] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  362. [ 871.230245] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  363. [ 871.230254] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  364. [ 871.230262] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  365. [ 871.230265] [<ffffffff810523e6>] kthread+0x96/0xa0
  366. [ 871.230268] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  367. [ 871.230271] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  368. [ 871.230274] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  369. [ 871.230276] ---[ end trace d1535c397c7740b2 ]---
  370. [ 871.234258] ------------[ cut here ]------------
  371. [ 871.234268] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  372. [ 871.234270] Hardware name: X8ST3
  373. [ 871.234271] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  374. [ 871.234288] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  375. [ 871.234290] Call Trace:
  376. [ 871.234294] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  377. [ 871.234297] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  378. [ 871.234305] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  379. [ 871.234314] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  380. [ 871.234322] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  381. [ 871.234328] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  382. [ 871.234335] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  383. [ 871.234339] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  384. [ 871.234347] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  385. [ 871.234357] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  386. [ 871.234366] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  387. [ 871.234370] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  388. [ 871.234380] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  389. [ 871.234389] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  390. [ 871.234393] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  391. [ 871.234396] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  392. [ 871.234405] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  393. [ 871.234414] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  394. [ 871.234423] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  395. [ 871.234431] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  396. [ 871.234434] [<ffffffff810523e6>] kthread+0x96/0xa0
  397. [ 871.234437] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  398. [ 871.234440] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  399. [ 871.234443] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  400. [ 871.234445] ---[ end trace d1535c397c7740b3 ]---
  401. [ 871.238798] ------------[ cut here ]------------
  402. [ 871.238808] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  403. [ 871.238810] Hardware name: X8ST3
  404. [ 871.238811] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  405. [ 871.238827] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  406. [ 871.238829] Call Trace:
  407. [ 871.238833] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  408. [ 871.238837] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  409. [ 871.238844] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  410. [ 871.238854] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  411. [ 871.238861] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  412. [ 871.238868] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  413. [ 871.238875] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  414. [ 871.238910] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  415. [ 871.238918] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  416. [ 871.238930] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  417. [ 871.238942] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  418. [ 871.238947] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  419. [ 871.238958] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  420. [ 871.238970] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  421. [ 871.238975] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  422. [ 871.238979] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  423. [ 871.238990] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  424. [ 871.239000] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  425. [ 871.239011] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  426. [ 871.239021] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  427. [ 871.239026] [<ffffffff810523e6>] kthread+0x96/0xa0
  428. [ 871.239030] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  429. [ 871.239034] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  430. [ 871.239038] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  431. [ 871.239041] ---[ end trace d1535c397c7740b4 ]---
  432. [ 871.243620] ------------[ cut here ]------------
  433. [ 871.243630] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  434. [ 871.243632] Hardware name: X8ST3
  435. [ 871.243633] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  436. [ 871.243650] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  437. [ 871.243652] Call Trace:
  438. [ 871.243656] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  439. [ 871.243659] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  440. [ 871.243667] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  441. [ 871.243676] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  442. [ 871.243684] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  443. [ 871.243690] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  444. [ 871.243697] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  445. [ 871.243700] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  446. [ 871.243708] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  447. [ 871.243718] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  448. [ 871.243728] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  449. [ 871.243731] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  450. [ 871.243741] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  451. [ 871.243750] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  452. [ 871.243754] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  453. [ 871.243757] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  454. [ 871.243766] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  455. [ 871.243774] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  456. [ 871.243783] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  457. [ 871.243792] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  458. [ 871.243795] [<ffffffff810523e6>] kthread+0x96/0xa0
  459. [ 871.243797] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  460. [ 871.243800] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  461. [ 871.243803] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  462. [ 871.243805] ---[ end trace d1535c397c7740b5 ]---
  463. [ 871.248193] ------------[ cut here ]------------
  464. [ 871.248203] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  465. [ 871.248205] Hardware name: X8ST3
  466. [ 871.248206] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  467. [ 871.248223] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  468. [ 871.248224] Call Trace:
  469. [ 871.248229] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  470. [ 871.248232] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  471. [ 871.248239] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  472. [ 871.248249] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  473. [ 871.248257] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  474. [ 871.248263] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  475. [ 871.248270] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  476. [ 871.248273] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  477. [ 871.248282] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  478. [ 871.248291] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  479. [ 871.248301] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  480. [ 871.248305] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  481. [ 871.248314] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  482. [ 871.248324] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  483. [ 871.248328] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  484. [ 871.248331] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  485. [ 871.248340] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  486. [ 871.248348] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  487. [ 871.248357] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  488. [ 871.248366] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  489. [ 871.248369] [<ffffffff810523e6>] kthread+0x96/0xa0
  490. [ 871.248372] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  491. [ 871.248375] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  492. [ 871.248377] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  493. [ 871.248379] ---[ end trace d1535c397c7740b6 ]---
  494. [ 871.253131] ------------[ cut here ]------------
  495. [ 871.253140] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  496. [ 871.253142] Hardware name: X8ST3
  497. [ 871.253144] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  498. [ 871.253160] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  499. [ 871.253162] Call Trace:
  500. [ 871.253166] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  501. [ 871.253169] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  502. [ 871.253177] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  503. [ 871.253187] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  504. [ 871.253194] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  505. [ 871.253200] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  506. [ 871.253207] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  507. [ 871.253211] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  508. [ 871.253219] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  509. [ 871.253229] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  510. [ 871.253238] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  511. [ 871.253242] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  512. [ 871.253252] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  513. [ 871.253261] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  514. [ 871.253265] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  515. [ 871.253268] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  516. [ 871.253277] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  517. [ 871.253286] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  518. [ 871.253295] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  519. [ 871.253303] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  520. [ 871.253306] [<ffffffff810523e6>] kthread+0x96/0xa0
  521. [ 871.253309] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  522. [ 871.253312] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  523. [ 871.253315] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  524. [ 871.253317] ---[ end trace d1535c397c7740b7 ]---
  525. [ 871.257700] ------------[ cut here ]------------
  526. [ 871.257710] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  527. [ 871.257712] Hardware name: X8ST3
  528. [ 871.257713] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  529. [ 871.257729] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  530. [ 871.257731] Call Trace:
  531. [ 871.257735] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  532. [ 871.257739] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  533. [ 871.257746] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  534. [ 871.257756] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  535. [ 871.257763] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  536. [ 871.257770] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  537. [ 871.257776] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  538. [ 871.257780] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  539. [ 871.257788] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  540. [ 871.257798] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  541. [ 871.257808] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  542. [ 871.257812] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  543. [ 871.257822] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  544. [ 871.257831] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  545. [ 871.257835] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  546. [ 871.257838] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  547. [ 871.257847] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  548. [ 871.257855] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  549. [ 871.257864] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  550. [ 871.257873] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  551. [ 871.257913] [<ffffffff810523e6>] kthread+0x96/0xa0
  552. [ 871.257916] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  553. [ 871.257919] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  554. [ 871.257923] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  555. [ 871.257926] ---[ end trace d1535c397c7740b8 ]---
  556. [ 871.262720] ------------[ cut here ]------------
  557. [ 871.262729] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  558. [ 871.262732] Hardware name: X8ST3
  559. [ 871.262733] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  560. [ 871.262749] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  561. [ 871.262751] Call Trace:
  562. [ 871.262755] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  563. [ 871.262758] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  564. [ 871.262766] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  565. [ 871.262776] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  566. [ 871.262783] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  567. [ 871.262790] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  568. [ 871.262796] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  569. [ 871.262800] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  570. [ 871.262808] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  571. [ 871.262818] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  572. [ 871.262828] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  573. [ 871.262831] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  574. [ 871.262841] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  575. [ 871.262851] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  576. [ 871.262854] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  577. [ 871.262857] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  578. [ 871.262866] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  579. [ 871.262875] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  580. [ 871.262928] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  581. [ 871.262939] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  582. [ 871.262943] [<ffffffff810523e6>] kthread+0x96/0xa0
  583. [ 871.262948] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  584. [ 871.262953] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  585. [ 871.262956] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  586. [ 871.262959] ---[ end trace d1535c397c7740b9 ]---
  587. [ 871.267246] ------------[ cut here ]------------
  588. [ 871.267264] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  589. [ 871.267266] Hardware name: X8ST3
  590. [ 871.267267] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  591. [ 871.267284] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  592. [ 871.267286] Call Trace:
  593. [ 871.267290] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  594. [ 871.267293] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  595. [ 871.267300] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  596. [ 871.267310] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  597. [ 871.267317] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  598. [ 871.267324] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  599. [ 871.267330] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  600. [ 871.267334] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  601. [ 871.267342] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  602. [ 871.267352] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  603. [ 871.267361] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  604. [ 871.267365] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  605. [ 871.267375] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  606. [ 871.267384] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  607. [ 871.267388] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  608. [ 871.267390] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  609. [ 871.267399] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  610. [ 871.267408] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  611. [ 871.267417] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  612. [ 871.267425] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  613. [ 871.267428] [<ffffffff810523e6>] kthread+0x96/0xa0
  614. [ 871.267431] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  615. [ 871.267434] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  616. [ 871.267437] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  617. [ 871.267438] ---[ end trace d1535c397c7740ba ]---
  618. [ 871.271888] ------------[ cut here ]------------
  619. [ 871.271898] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  620. [ 871.271900] Hardware name: X8ST3
  621. [ 871.271901] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  622. [ 871.271918] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  623. [ 871.271920] Call Trace:
  624. [ 871.271924] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  625. [ 871.271927] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  626. [ 871.271935] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  627. [ 871.271944] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  628. [ 871.271952] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  629. [ 871.271958] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  630. [ 871.271965] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  631. [ 871.271969] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  632. [ 871.271977] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  633. [ 871.271986] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  634. [ 871.271996] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  635. [ 871.272000] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  636. [ 871.272010] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  637. [ 871.272019] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  638. [ 871.272023] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  639. [ 871.272026] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  640. [ 871.272035] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  641. [ 871.272044] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  642. [ 871.272053] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  643. [ 871.272061] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  644. [ 871.272064] [<ffffffff810523e6>] kthread+0x96/0xa0
  645. [ 871.272067] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  646. [ 871.272070] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  647. [ 871.272073] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  648. [ 871.272075] ---[ end trace d1535c397c7740bb ]---
  649. [ 871.276920] ------------[ cut here ]------------
  650. [ 871.276937] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  651. [ 871.276941] Hardware name: X8ST3
  652. [ 871.276943] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  653. [ 871.276972] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  654. [ 871.276976] Call Trace:
  655. [ 871.276982] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  656. [ 871.276988] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  657. [ 871.277002] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  658. [ 871.277019] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  659. [ 871.277032] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  660. [ 871.277043] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  661. [ 871.277055] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  662. [ 871.277062] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  663. [ 871.277076] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  664. [ 871.277093] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  665. [ 871.277111] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  666. [ 871.277117] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  667. [ 871.277134] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  668. [ 871.277151] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  669. [ 871.277158] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  670. [ 871.277163] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  671. [ 871.277179] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  672. [ 871.277194] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  673. [ 871.277210] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  674. [ 871.277226] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  675. [ 871.277231] [<ffffffff810523e6>] kthread+0x96/0xa0
  676. [ 871.277236] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  677. [ 871.277241] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  678. [ 871.277246] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  679. [ 871.277249] ---[ end trace d1535c397c7740bc ]---
  680. [ 871.282990] ------------[ cut here ]------------
  681. [ 871.283007] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  682. [ 871.283011] Hardware name: X8ST3
  683. [ 871.283013] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  684. [ 871.283041] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  685. [ 871.283045] Call Trace:
  686. [ 871.283052] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  687. [ 871.283057] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  688. [ 871.283071] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  689. [ 871.283088] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  690. [ 871.283101] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  691. [ 871.283113] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  692. [ 871.283125] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  693. [ 871.283131] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  694. [ 871.283146] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  695. [ 871.283163] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  696. [ 871.283180] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  697. [ 871.283186] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  698. [ 871.283204] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  699. [ 871.283221] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  700. [ 871.283228] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  701. [ 871.283233] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  702. [ 871.283249] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  703. [ 871.283264] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  704. [ 871.283280] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  705. [ 871.283296] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  706. [ 871.283301] [<ffffffff810523e6>] kthread+0x96/0xa0
  707. [ 871.283306] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  708. [ 871.283311] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  709. [ 871.283316] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  710. [ 871.283319] ---[ end trace d1535c397c7740bd ]---
  711. [ 871.288430] ------------[ cut here ]------------
  712. [ 871.288440] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  713. [ 871.288442] Hardware name: X8ST3
  714. [ 871.288443] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  715. [ 871.288460] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  716. [ 871.288461] Call Trace:
  717. [ 871.288466] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  718. [ 871.288469] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  719. [ 871.288476] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  720. [ 871.288486] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  721. [ 871.288493] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  722. [ 871.288500] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  723. [ 871.288507] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  724. [ 871.288510] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  725. [ 871.288518] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  726. [ 871.288528] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  727. [ 871.288538] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  728. [ 871.288542] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  729. [ 871.288551] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  730. [ 871.288561] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  731. [ 871.288565] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  732. [ 871.288568] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  733. [ 871.288577] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  734. [ 871.288585] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  735. [ 871.288594] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  736. [ 871.288603] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  737. [ 871.288606] [<ffffffff810523e6>] kthread+0x96/0xa0
  738. [ 871.288609] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  739. [ 871.288612] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  740. [ 871.288615] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  741. [ 871.288617] ---[ end trace d1535c397c7740be ]---
  742. [ 871.293359] ------------[ cut here ]------------
  743. [ 871.293373] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  744. [ 871.293375] Hardware name: X8ST3
  745. [ 871.293376] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  746. [ 871.293392] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  747. [ 871.293394] Call Trace:
  748. [ 871.293399] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  749. [ 871.293402] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  750. [ 871.293409] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  751. [ 871.293419] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  752. [ 871.293427] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  753. [ 871.293433] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  754. [ 871.293440] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  755. [ 871.293443] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  756. [ 871.293452] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  757. [ 871.293461] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  758. [ 871.293471] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  759. [ 871.293475] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  760. [ 871.293485] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  761. [ 871.293494] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  762. [ 871.293498] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  763. [ 871.293501] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  764. [ 871.293510] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  765. [ 871.293519] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  766. [ 871.293528] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  767. [ 871.293536] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  768. [ 871.293539] [<ffffffff810523e6>] kthread+0x96/0xa0
  769. [ 871.293542] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  770. [ 871.293545] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  771. [ 871.293548] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  772. [ 871.293550] ---[ end trace d1535c397c7740bf ]---
  773. [ 871.298237] ------------[ cut here ]------------
  774. [ 871.298248] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  775. [ 871.298250] Hardware name: X8ST3
  776. [ 871.298252] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  777. [ 871.298269] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  778. [ 871.298271] Call Trace:
  779. [ 871.298275] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  780. [ 871.298279] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  781. [ 871.298287] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  782. [ 871.298297] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  783. [ 871.298305] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  784. [ 871.298312] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  785. [ 871.298319] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  786. [ 871.298323] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  787. [ 871.298332] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  788. [ 871.298342] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  789. [ 871.298353] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  790. [ 871.298356] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  791. [ 871.298367] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  792. [ 871.298377] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  793. [ 871.298381] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  794. [ 871.298384] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  795. [ 871.298394] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  796. [ 871.298403] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  797. [ 871.298413] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  798. [ 871.298422] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  799. [ 871.298425] [<ffffffff810523e6>] kthread+0x96/0xa0
  800. [ 871.298428] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  801. [ 871.298431] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  802. [ 871.298434] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  803. [ 871.298436] ---[ end trace d1535c397c7740c0 ]---
  804. [ 871.303169] ------------[ cut here ]------------
  805. [ 871.303180] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  806. [ 871.303182] Hardware name: X8ST3
  807. [ 871.303183] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  808. [ 871.303201] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  809. [ 871.303203] Call Trace:
  810. [ 871.303207] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  811. [ 871.303211] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  812. [ 871.303219] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  813. [ 871.303229] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  814. [ 871.303237] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  815. [ 871.303244] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  816. [ 871.303251] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  817. [ 871.303255] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  818. [ 871.303264] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  819. [ 871.303274] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  820. [ 871.303285] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  821. [ 871.303289] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  822. [ 871.303299] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  823. [ 871.303309] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  824. [ 871.303313] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  825. [ 871.303317] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  826. [ 871.303326] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  827. [ 871.303335] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  828. [ 871.303345] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  829. [ 871.303354] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  830. [ 871.303357] [<ffffffff810523e6>] kthread+0x96/0xa0
  831. [ 871.303360] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  832. [ 871.303364] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  833. [ 871.303366] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  834. [ 871.303368] ---[ end trace d1535c397c7740c1 ]---
  835. [ 871.307908] ------------[ cut here ]------------
  836. [ 871.307919] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  837. [ 871.307921] Hardware name: X8ST3
  838. [ 871.307922] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  839. [ 871.307940] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  840. [ 871.307942] Call Trace:
  841. [ 871.307946] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  842. [ 871.307950] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  843. [ 871.307958] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  844. [ 871.307968] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  845. [ 871.307976] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  846. [ 871.307983] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  847. [ 871.307990] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  848. [ 871.307994] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  849. [ 871.308003] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  850. [ 871.308013] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  851. [ 871.308024] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  852. [ 871.308028] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  853. [ 871.308038] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  854. [ 871.308048] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  855. [ 871.308052] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  856. [ 871.308055] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  857. [ 871.308065] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  858. [ 871.308074] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  859. [ 871.308083] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  860. [ 871.308093] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  861. [ 871.308096] [<ffffffff810523e6>] kthread+0x96/0xa0
  862. [ 871.308099] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  863. [ 871.308102] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  864. [ 871.308105] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  865. [ 871.308107] ---[ end trace d1535c397c7740c2 ]---
  866. [ 871.312515] ------------[ cut here ]------------
  867. [ 871.312532] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  868. [ 871.312536] Hardware name: X8ST3
  869. [ 871.312538] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  870. [ 871.312568] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  871. [ 871.312572] Call Trace:
  872. [ 871.312579] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  873. [ 871.312585] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  874. [ 871.312598] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  875. [ 871.312616] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  876. [ 871.312629] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  877. [ 871.312641] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  878. [ 871.312652] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  879. [ 871.312659] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  880. [ 871.312673] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  881. [ 871.312690] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  882. [ 871.312708] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  883. [ 871.312714] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  884. [ 871.312732] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  885. [ 871.312749] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  886. [ 871.312755] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  887. [ 871.312770] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  888. [ 871.312786] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  889. [ 871.312802] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  890. [ 871.312817] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  891. [ 871.312823] [<ffffffff810523e6>] kthread+0x96/0xa0
  892. [ 871.312828] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  893. [ 871.312833] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  894. [ 871.312838] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  895. [ 871.312841] ---[ end trace d1535c397c7740c3 ]---
  896. [ 871.317468] ------------[ cut here ]------------
  897. [ 871.317479] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  898. [ 871.317481] Hardware name: X8ST3
  899. [ 871.317482] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  900. [ 871.317500] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  901. [ 871.317502] Call Trace:
  902. [ 871.317507] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  903. [ 871.317510] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  904. [ 871.317518] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  905. [ 871.317529] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  906. [ 871.317536] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  907. [ 871.317543] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  908. [ 871.317550] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  909. [ 871.317554] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  910. [ 871.317563] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  911. [ 871.317574] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  912. [ 871.317584] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  913. [ 871.317588] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  914. [ 871.317598] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  915. [ 871.317609] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  916. [ 871.317613] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  917. [ 871.317616] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  918. [ 871.317625] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  919. [ 871.317635] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  920. [ 871.317644] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  921. [ 871.317654] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  922. [ 871.317657] [<ffffffff810523e6>] kthread+0x96/0xa0
  923. [ 871.317660] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  924. [ 871.317663] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  925. [ 871.317666] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  926. [ 871.317668] ---[ end trace d1535c397c7740c4 ]---
  927. [ 871.322516] ------------[ cut here ]------------
  928. [ 871.322533] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  929. [ 871.322535] Hardware name: X8ST3
  930. [ 871.322536] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  931. [ 871.322554] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  932. [ 871.322556] Call Trace:
  933. [ 871.322560] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  934. [ 871.322564] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  935. [ 871.322572] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  936. [ 871.322582] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  937. [ 871.322590] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  938. [ 871.322597] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  939. [ 871.322604] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  940. [ 871.322608] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  941. [ 871.322617] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  942. [ 871.322627] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  943. [ 871.322638] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  944. [ 871.322641] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  945. [ 871.322652] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  946. [ 871.322662] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  947. [ 871.322666] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  948. [ 871.322669] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  949. [ 871.322679] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  950. [ 871.322688] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  951. [ 871.322697] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  952. [ 871.322707] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  953. [ 871.322710] [<ffffffff810523e6>] kthread+0x96/0xa0
  954. [ 871.322713] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  955. [ 871.322716] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  956. [ 871.322719] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  957. [ 871.322721] ---[ end trace d1535c397c7740c5 ]---
  958. [ 871.327852] ------------[ cut here ]------------
  959. [ 871.327869] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  960. [ 871.327907] Hardware name: X8ST3
  961. [ 871.327909] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  962. [ 871.327960] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  963. [ 871.327969] Call Trace:
  964. [ 871.327977] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  965. [ 871.327987] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  966. [ 871.328004] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  967. [ 871.328027] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  968. [ 871.328043] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  969. [ 871.328059] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  970. [ 871.328075] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  971. [ 871.328086] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  972. [ 871.328104] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  973. [ 871.328126] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  974. [ 871.328148] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  975. [ 871.328158] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  976. [ 871.328180] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  977. [ 871.328201] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  978. [ 871.328212] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  979. [ 871.328222] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  980. [ 871.328241] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  981. [ 871.328261] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  982. [ 871.328280] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  983. [ 871.328301] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  984. [ 871.328310] [<ffffffff810523e6>] kthread+0x96/0xa0
  985. [ 871.328319] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  986. [ 871.328328] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  987. [ 871.328336] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  988. [ 871.328343] ---[ end trace d1535c397c7740c6 ]---
  989. [ 871.334063] ------------[ cut here ]------------
  990. [ 871.334073] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  991. [ 871.334075] Hardware name: X8ST3
  992. [ 871.334076] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  993. [ 871.334093] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  994. [ 871.334095] Call Trace:
  995. [ 871.334099] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  996. [ 871.334102] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  997. [ 871.334110] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  998. [ 871.334120] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  999. [ 871.334127] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1000. [ 871.334133] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1001. [ 871.334140] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1002. [ 871.334144] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1003. [ 871.334152] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1004. [ 871.334162] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1005. [ 871.334172] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1006. [ 871.334175] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1007. [ 871.334185] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1008. [ 871.334195] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1009. [ 871.334199] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1010. [ 871.334202] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1011. [ 871.334210] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1012. [ 871.334219] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1013. [ 871.334228] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1014. [ 871.334237] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1015. [ 871.334240] [<ffffffff810523e6>] kthread+0x96/0xa0
  1016. [ 871.334243] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1017. [ 871.334246] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1018. [ 871.334248] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1019. [ 871.334250] ---[ end trace d1535c397c7740c7 ]---
  1020. [ 871.339107] ------------[ cut here ]------------
  1021. [ 871.339123] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1022. [ 871.339125] Hardware name: X8ST3
  1023. [ 871.339127] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1024. [ 871.339143] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1025. [ 871.339145] Call Trace:
  1026. [ 871.339149] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1027. [ 871.339152] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1028. [ 871.339160] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1029. [ 871.339170] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1030. [ 871.339177] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1031. [ 871.339183] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1032. [ 871.339190] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1033. [ 871.339194] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1034. [ 871.339202] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1035. [ 871.339212] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1036. [ 871.339221] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1037. [ 871.339225] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1038. [ 871.339235] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1039. [ 871.339244] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1040. [ 871.339248] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1041. [ 871.339251] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1042. [ 871.339260] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1043. [ 871.339269] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1044. [ 871.339277] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1045. [ 871.339286] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1046. [ 871.339289] [<ffffffff810523e6>] kthread+0x96/0xa0
  1047. [ 871.339292] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1048. [ 871.339295] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1049. [ 871.339298] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1050. [ 871.339299] ---[ end trace d1535c397c7740c8 ]---
  1051. [ 871.344013] ------------[ cut here ]------------
  1052. [ 871.344030] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1053. [ 871.344034] Hardware name: X8ST3
  1054. [ 871.344036] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1055. [ 871.344059] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1056. [ 871.344060] Call Trace:
  1057. [ 871.344064] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1058. [ 871.344068] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1059. [ 871.344075] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1060. [ 871.344085] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1061. [ 871.344092] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1062. [ 871.344099] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1063. [ 871.344106] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1064. [ 871.344109] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1065. [ 871.344117] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1066. [ 871.344127] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1067. [ 871.344137] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1068. [ 871.344140] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1069. [ 871.344150] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1070. [ 871.344160] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1071. [ 871.344163] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1072. [ 871.344167] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1073. [ 871.344175] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1074. [ 871.344184] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1075. [ 871.344193] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1076. [ 871.344202] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1077. [ 871.344205] [<ffffffff810523e6>] kthread+0x96/0xa0
  1078. [ 871.344208] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1079. [ 871.344211] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1080. [ 871.344213] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1081. [ 871.344215] ---[ end trace d1535c397c7740c9 ]---
  1082. [ 871.348224] ------------[ cut here ]------------
  1083. [ 871.348234] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1084. [ 871.348236] Hardware name: X8ST3
  1085. [ 871.348237] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1086. [ 871.348254] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1087. [ 871.348256] Call Trace:
  1088. [ 871.348260] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1089. [ 871.348263] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1090. [ 871.348271] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1091. [ 871.348281] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1092. [ 871.348288] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1093. [ 871.348294] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1094. [ 871.348301] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1095. [ 871.348305] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1096. [ 871.348313] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1097. [ 871.348323] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1098. [ 871.348332] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1099. [ 871.348336] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1100. [ 871.348346] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1101. [ 871.348355] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1102. [ 871.348359] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1103. [ 871.348362] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1104. [ 871.348371] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1105. [ 871.348380] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1106. [ 871.348389] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1107. [ 871.348398] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1108. [ 871.348401] [<ffffffff810523e6>] kthread+0x96/0xa0
  1109. [ 871.348404] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1110. [ 871.348407] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1111. [ 871.348409] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1112. [ 871.348411] ---[ end trace d1535c397c7740ca ]---
  1113. [ 871.352580] ------------[ cut here ]------------
  1114. [ 871.352591] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1115. [ 871.352593] Hardware name: X8ST3
  1116. [ 871.352594] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1117. [ 871.352610] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1118. [ 871.352612] Call Trace:
  1119. [ 871.352616] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1120. [ 871.352620] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1121. [ 871.352627] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1122. [ 871.352637] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1123. [ 871.352644] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1124. [ 871.352651] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1125. [ 871.352657] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1126. [ 871.352661] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1127. [ 871.352669] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1128. [ 871.352679] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1129. [ 871.352689] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1130. [ 871.352693] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1131. [ 871.352702] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1132. [ 871.352712] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1133. [ 871.352716] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1134. [ 871.352719] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1135. [ 871.352728] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1136. [ 871.352737] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1137. [ 871.352745] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1138. [ 871.352754] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1139. [ 871.352757] [<ffffffff810523e6>] kthread+0x96/0xa0
  1140. [ 871.352760] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1141. [ 871.352763] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1142. [ 871.352766] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1143. [ 871.352767] ---[ end trace d1535c397c7740cb ]---
  1144. [ 871.356912] ------------[ cut here ]------------
  1145. [ 871.356922] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1146. [ 871.356925] Hardware name: X8ST3
  1147. [ 871.356926] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1148. [ 871.356942] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1149. [ 871.356944] Call Trace:
  1150. [ 871.356948] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1151. [ 871.356951] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1152. [ 871.356959] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1153. [ 871.356969] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1154. [ 871.356976] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1155. [ 871.356982] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1156. [ 871.356989] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1157. [ 871.356993] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1158. [ 871.357001] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1159. [ 871.357010] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1160. [ 871.357020] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1161. [ 871.357024] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1162. [ 871.357034] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1163. [ 871.357043] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1164. [ 871.357047] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1165. [ 871.357050] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1166. [ 871.357058] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1167. [ 871.357067] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1168. [ 871.357076] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1169. [ 871.357085] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1170. [ 871.357087] [<ffffffff810523e6>] kthread+0x96/0xa0
  1171. [ 871.357090] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1172. [ 871.357093] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1173. [ 871.357096] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1174. [ 871.357097] ---[ end trace d1535c397c7740cc ]---
  1175. [ 871.361029] ------------[ cut here ]------------
  1176. [ 871.361046] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1177. [ 871.361050] Hardware name: X8ST3
  1178. [ 871.361055] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1179. [ 871.361071] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1180. [ 871.361073] Call Trace:
  1181. [ 871.361077] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1182. [ 871.361081] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1183. [ 871.361088] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1184. [ 871.361098] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1185. [ 871.361105] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1186. [ 871.361112] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1187. [ 871.361118] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1188. [ 871.361122] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1189. [ 871.361130] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1190. [ 871.361140] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1191. [ 871.361150] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1192. [ 871.361153] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1193. [ 871.361163] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1194. [ 871.361173] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1195. [ 871.361176] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1196. [ 871.361179] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1197. [ 871.361188] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1198. [ 871.361197] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1199. [ 871.361206] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1200. [ 871.361215] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1201. [ 871.361217] [<ffffffff810523e6>] kthread+0x96/0xa0
  1202. [ 871.361220] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1203. [ 871.361223] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1204. [ 871.361226] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1205. [ 871.361228] ---[ end trace d1535c397c7740cd ]---
  1206. [ 871.365391] ------------[ cut here ]------------
  1207. [ 871.365401] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1208. [ 871.365403] Hardware name: X8ST3
  1209. [ 871.365404] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1210. [ 871.365421] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1211. [ 871.365423] Call Trace:
  1212. [ 871.365427] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1213. [ 871.365430] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1214. [ 871.365438] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1215. [ 871.365448] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1216. [ 871.365455] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1217. [ 871.365461] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1218. [ 871.365468] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1219. [ 871.365472] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1220. [ 871.365480] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1221. [ 871.365490] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1222. [ 871.365499] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1223. [ 871.365503] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1224. [ 871.365513] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1225. [ 871.365522] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1226. [ 871.365526] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1227. [ 871.365529] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1228. [ 871.365538] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1229. [ 871.365547] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1230. [ 871.365556] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1231. [ 871.365564] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1232. [ 871.365567] [<ffffffff810523e6>] kthread+0x96/0xa0
  1233. [ 871.365570] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1234. [ 871.365573] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1235. [ 871.365576] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1236. [ 871.365578] ---[ end trace d1535c397c7740ce ]---
  1237. [ 871.370116] ------------[ cut here ]------------
  1238. [ 871.370126] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1239. [ 871.370129] Hardware name: X8ST3
  1240. [ 871.370130] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1241. [ 871.370146] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1242. [ 871.370148] Call Trace:
  1243. [ 871.370152] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1244. [ 871.370155] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1245. [ 871.370163] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1246. [ 871.370173] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1247. [ 871.370180] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1248. [ 871.370187] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1249. [ 871.370193] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1250. [ 871.370197] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1251. [ 871.370205] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1252. [ 871.370215] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1253. [ 871.370225] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1254. [ 871.370228] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1255. [ 871.370238] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1256. [ 871.370248] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1257. [ 871.370252] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1258. [ 871.370255] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1259. [ 871.370264] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1260. [ 871.370272] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1261. [ 871.370281] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1262. [ 871.370290] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1263. [ 871.370293] [<ffffffff810523e6>] kthread+0x96/0xa0
  1264. [ 871.370296] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1265. [ 871.370299] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1266. [ 871.370301] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1267. [ 871.370303] ---[ end trace d1535c397c7740cf ]---
  1268. [ 871.374866] ------------[ cut here ]------------
  1269. [ 871.374877] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1270. [ 871.374927] Hardware name: X8ST3
  1271. [ 871.374928] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1272. [ 871.374955] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1273. [ 871.374959] Call Trace:
  1274. [ 871.374964] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1275. [ 871.374968] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1276. [ 871.374977] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1277. [ 871.374988] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1278. [ 871.374997] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1279. [ 871.375005] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1280. [ 871.375013] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1281. [ 871.375019] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1282. [ 871.375028] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1283. [ 871.375040] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1284. [ 871.375051] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1285. [ 871.375056] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1286. [ 871.375068] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1287. [ 871.375079] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1288. [ 871.375084] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1289. [ 871.375089] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1290. [ 871.375099] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1291. [ 871.375110] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1292. [ 871.375120] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1293. [ 871.375131] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1294. [ 871.375135] [<ffffffff810523e6>] kthread+0x96/0xa0
  1295. [ 871.375140] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1296. [ 871.375144] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1297. [ 871.375148] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1298. [ 871.375151] ---[ end trace d1535c397c7740d0 ]---
  1299. [ 871.379670] ------------[ cut here ]------------
  1300. [ 871.379680] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1301. [ 871.379682] Hardware name: X8ST3
  1302. [ 871.379684] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1303. [ 871.379700] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1304. [ 871.379702] Call Trace:
  1305. [ 871.379706] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1306. [ 871.379709] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1307. [ 871.379717] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1308. [ 871.379726] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1309. [ 871.379734] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1310. [ 871.379740] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1311. [ 871.379747] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1312. [ 871.379750] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1313. [ 871.379758] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1314. [ 871.379768] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1315. [ 871.379778] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1316. [ 871.379781] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1317. [ 871.379791] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1318. [ 871.379801] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1319. [ 871.379804] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1320. [ 871.379807] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1321. [ 871.379816] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1322. [ 871.379825] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1323. [ 871.379834] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1324. [ 871.379842] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1325. [ 871.379845] [<ffffffff810523e6>] kthread+0x96/0xa0
  1326. [ 871.379848] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1327. [ 871.379851] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1328. [ 871.379853] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1329. [ 871.379855] ---[ end trace d1535c397c7740d1 ]---
  1330. [ 871.384315] ------------[ cut here ]------------
  1331. [ 871.384325] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1332. [ 871.384328] Hardware name: X8ST3
  1333. [ 871.384329] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1334. [ 871.384346] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1335. [ 871.384348] Call Trace:
  1336. [ 871.384353] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1337. [ 871.384356] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1338. [ 871.384364] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1339. [ 871.384375] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1340. [ 871.384382] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1341. [ 871.384389] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1342. [ 871.384396] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1343. [ 871.384400] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1344. [ 871.384409] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1345. [ 871.384419] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1346. [ 871.384430] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1347. [ 871.384433] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1348. [ 871.384444] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1349. [ 871.384454] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1350. [ 871.384458] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1351. [ 871.384461] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1352. [ 871.384471] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1353. [ 871.384480] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1354. [ 871.384489] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1355. [ 871.384499] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1356. [ 871.384502] [<ffffffff810523e6>] kthread+0x96/0xa0
  1357. [ 871.384505] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1358. [ 871.384508] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1359. [ 871.384511] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1360. [ 871.384513] ---[ end trace d1535c397c7740d2 ]---
  1361. [ 871.389363] ------------[ cut here ]------------
  1362. [ 871.389374] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1363. [ 871.389376] Hardware name: X8ST3
  1364. [ 871.389377] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1365. [ 871.389395] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1366. [ 871.389397] Call Trace:
  1367. [ 871.389401] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1368. [ 871.389404] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1369. [ 871.389413] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1370. [ 871.389423] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1371. [ 871.389431] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1372. [ 871.389438] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1373. [ 871.389445] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1374. [ 871.389449] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1375. [ 871.389457] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1376. [ 871.389468] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1377. [ 871.389478] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1378. [ 871.389482] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1379. [ 871.389493] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1380. [ 871.389503] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1381. [ 871.389507] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1382. [ 871.389510] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1383. [ 871.389519] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1384. [ 871.389529] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1385. [ 871.389538] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1386. [ 871.389548] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1387. [ 871.389551] [<ffffffff810523e6>] kthread+0x96/0xa0
  1388. [ 871.389554] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1389. [ 871.389557] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1390. [ 871.389560] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1391. [ 871.389562] ---[ end trace d1535c397c7740d3 ]---
  1392. [ 871.394525] ------------[ cut here ]------------
  1393. [ 871.394535] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1394. [ 871.394538] Hardware name: X8ST3
  1395. [ 871.394539] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1396. [ 871.394556] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1397. [ 871.394559] Call Trace:
  1398. [ 871.394563] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1399. [ 871.394566] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1400. [ 871.394574] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1401. [ 871.394585] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1402. [ 871.394592] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1403. [ 871.394599] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1404. [ 871.394606] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1405. [ 871.394610] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1406. [ 871.394619] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1407. [ 871.394629] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1408. [ 871.394639] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1409. [ 871.394643] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1410. [ 871.394653] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1411. [ 871.394664] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1412. [ 871.394667] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1413. [ 871.394671] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1414. [ 871.394680] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1415. [ 871.394689] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1416. [ 871.394699] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1417. [ 871.394708] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1418. [ 871.394711] [<ffffffff810523e6>] kthread+0x96/0xa0
  1419. [ 871.394714] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1420. [ 871.394717] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1421. [ 871.394720] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1422. [ 871.394722] ---[ end trace d1535c397c7740d4 ]---
  1423. [ 871.399602] ------------[ cut here ]------------
  1424. [ 871.399613] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1425. [ 871.399615] Hardware name: X8ST3
  1426. [ 871.399617] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1427. [ 871.399634] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1428. [ 871.399636] Call Trace:
  1429. [ 871.399640] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1430. [ 871.399644] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1431. [ 871.399652] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1432. [ 871.399662] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1433. [ 871.399670] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1434. [ 871.399677] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1435. [ 871.399684] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1436. [ 871.399688] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1437. [ 871.399697] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1438. [ 871.399707] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1439. [ 871.399718] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1440. [ 871.399721] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1441. [ 871.399732] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1442. [ 871.399742] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1443. [ 871.399746] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1444. [ 871.399749] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1445. [ 871.399759] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1446. [ 871.399768] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1447. [ 871.399778] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1448. [ 871.399787] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1449. [ 871.399790] [<ffffffff810523e6>] kthread+0x96/0xa0
  1450. [ 871.399794] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1451. [ 871.399797] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1452. [ 871.399799] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1453. [ 871.399801] ---[ end trace d1535c397c7740d5 ]---
  1454. [ 871.404305] ------------[ cut here ]------------
  1455. [ 871.404316] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1456. [ 871.404318] Hardware name: X8ST3
  1457. [ 871.404319] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1458. [ 871.404337] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1459. [ 871.404339] Call Trace:
  1460. [ 871.404343] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1461. [ 871.404346] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1462. [ 871.404354] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1463. [ 871.404365] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1464. [ 871.404373] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1465. [ 871.404380] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1466. [ 871.404387] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1467. [ 871.404391] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1468. [ 871.404399] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1469. [ 871.404410] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1470. [ 871.404420] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1471. [ 871.404424] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1472. [ 871.404434] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1473. [ 871.404445] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1474. [ 871.404449] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1475. [ 871.404452] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1476. [ 871.404461] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1477. [ 871.404471] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1478. [ 871.404480] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1479. [ 871.404489] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1480. [ 871.404493] [<ffffffff810523e6>] kthread+0x96/0xa0
  1481. [ 871.404496] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1482. [ 871.404499] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1483. [ 871.404502] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1484. [ 871.404504] ---[ end trace d1535c397c7740d6 ]---
  1485. [ 871.409428] ------------[ cut here ]------------
  1486. [ 871.409439] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1487. [ 871.409441] Hardware name: X8ST3
  1488. [ 871.409443] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1489. [ 871.409460] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1490. [ 871.409462] Call Trace:
  1491. [ 871.409466] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1492. [ 871.409470] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1493. [ 871.409478] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1494. [ 871.409488] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1495. [ 871.409496] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1496. [ 871.409503] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1497. [ 871.409510] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1498. [ 871.409514] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1499. [ 871.409523] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1500. [ 871.409533] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1501. [ 871.409544] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1502. [ 871.409548] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1503. [ 871.409558] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1504. [ 871.409568] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1505. [ 871.409572] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1506. [ 871.409576] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1507. [ 871.409585] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1508. [ 871.409594] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1509. [ 871.409604] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1510. [ 871.409613] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1511. [ 871.409616] [<ffffffff810523e6>] kthread+0x96/0xa0
  1512. [ 871.409620] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1513. [ 871.409623] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1514. [ 871.409626] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1515. [ 871.409628] ---[ end trace d1535c397c7740d7 ]---
  1516. [ 871.414589] ------------[ cut here ]------------
  1517. [ 871.414600] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1518. [ 871.414602] Hardware name: X8ST3
  1519. [ 871.414603] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1520. [ 871.414621] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1521. [ 871.414623] Call Trace:
  1522. [ 871.414627] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1523. [ 871.414630] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1524. [ 871.414638] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1525. [ 871.414649] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1526. [ 871.414657] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1527. [ 871.414663] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1528. [ 871.414670] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1529. [ 871.414674] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1530. [ 871.414683] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1531. [ 871.414693] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1532. [ 871.414704] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1533. [ 871.414707] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1534. [ 871.414718] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1535. [ 871.414728] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1536. [ 871.414732] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1537. [ 871.414735] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1538. [ 871.414745] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1539. [ 871.414754] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1540. [ 871.414763] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1541. [ 871.414773] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1542. [ 871.414776] [<ffffffff810523e6>] kthread+0x96/0xa0
  1543. [ 871.414779] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1544. [ 871.414782] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1545. [ 871.414785] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1546. [ 871.414787] ---[ end trace d1535c397c7740d8 ]---
  1547. [ 871.419098] ------------[ cut here ]------------
  1548. [ 871.419109] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1549. [ 871.419111] Hardware name: X8ST3
  1550. [ 871.419112] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1551. [ 871.419130] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1552. [ 871.419132] Call Trace:
  1553. [ 871.419136] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1554. [ 871.419139] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1555. [ 871.419147] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1556. [ 871.419158] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1557. [ 871.419166] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1558. [ 871.419173] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1559. [ 871.419180] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1560. [ 871.419183] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1561. [ 871.419192] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1562. [ 871.419203] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1563. [ 871.419213] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1564. [ 871.419217] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1565. [ 871.419228] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1566. [ 871.419238] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1567. [ 871.419242] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1568. [ 871.419245] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1569. [ 871.419255] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1570. [ 871.419264] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1571. [ 871.419273] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1572. [ 871.419283] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1573. [ 871.419286] [<ffffffff810523e6>] kthread+0x96/0xa0
  1574. [ 871.419289] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1575. [ 871.419292] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1576. [ 871.419295] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1577. [ 871.419297] ---[ end trace d1535c397c7740d9 ]---
  1578. [ 871.424485] ------------[ cut here ]------------
  1579. [ 871.424496] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1580. [ 871.424498] Hardware name: X8ST3
  1581. [ 871.424499] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1582. [ 871.424517] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1583. [ 871.424519] Call Trace:
  1584. [ 871.424523] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1585. [ 871.424526] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1586. [ 871.424534] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1587. [ 871.424545] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1588. [ 871.424552] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1589. [ 871.424559] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1590. [ 871.424566] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1591. [ 871.424570] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1592. [ 871.424579] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1593. [ 871.424589] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1594. [ 871.424599] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1595. [ 871.424603] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1596. [ 871.424614] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1597. [ 871.424624] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1598. [ 871.424627] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1599. [ 871.424631] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1600. [ 871.424640] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1601. [ 871.424649] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1602. [ 871.424659] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1603. [ 871.424668] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1604. [ 871.424671] [<ffffffff810523e6>] kthread+0x96/0xa0
  1605. [ 871.424674] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1606. [ 871.424677] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1607. [ 871.424680] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1608. [ 871.424682] ---[ end trace d1535c397c7740da ]---
  1609. [ 871.429408] ------------[ cut here ]------------
  1610. [ 871.429418] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1611. [ 871.429420] Hardware name: X8ST3
  1612. [ 871.429421] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1613. [ 871.429439] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1614. [ 871.429441] Call Trace:
  1615. [ 871.429445] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1616. [ 871.429449] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1617. [ 871.429457] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1618. [ 871.429467] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1619. [ 871.429475] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1620. [ 871.429482] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1621. [ 871.429489] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1622. [ 871.429493] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1623. [ 871.429502] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1624. [ 871.429512] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1625. [ 871.429523] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1626. [ 871.429526] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1627. [ 871.429537] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1628. [ 871.429547] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1629. [ 871.429551] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1630. [ 871.429554] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1631. [ 871.429564] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1632. [ 871.429573] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1633. [ 871.429582] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1634. [ 871.429592] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1635. [ 871.429595] [<ffffffff810523e6>] kthread+0x96/0xa0
  1636. [ 871.429598] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1637. [ 871.429601] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1638. [ 871.429604] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1639. [ 871.429606] ---[ end trace d1535c397c7740db ]---
  1640. [ 871.434444] ------------[ cut here ]------------
  1641. [ 871.434459] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1642. [ 871.434461] Hardware name: X8ST3
  1643. [ 871.434462] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1644. [ 871.434479] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1645. [ 871.434482] Call Trace:
  1646. [ 871.434486] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1647. [ 871.434489] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1648. [ 871.434497] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1649. [ 871.434508] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1650. [ 871.434516] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1651. [ 871.434523] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1652. [ 871.434530] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1653. [ 871.434534] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1654. [ 871.434542] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1655. [ 871.434553] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1656. [ 871.434563] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1657. [ 871.434567] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1658. [ 871.434578] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1659. [ 871.434588] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1660. [ 871.434592] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1661. [ 871.434595] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1662. [ 871.434605] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1663. [ 871.434614] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1664. [ 871.434623] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1665. [ 871.434633] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1666. [ 871.434636] [<ffffffff810523e6>] kthread+0x96/0xa0
  1667. [ 871.434639] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1668. [ 871.434642] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1669. [ 871.434645] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1670. [ 871.434647] ---[ end trace d1535c397c7740dc ]---
  1671. [ 871.439523] ------------[ cut here ]------------
  1672. [ 871.439533] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1673. [ 871.439536] Hardware name: X8ST3
  1674. [ 871.439537] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1675. [ 871.439554] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1676. [ 871.439556] Call Trace:
  1677. [ 871.439561] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1678. [ 871.439564] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1679. [ 871.439572] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1680. [ 871.439583] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1681. [ 871.439590] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1682. [ 871.439597] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1683. [ 871.439604] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1684. [ 871.439608] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1685. [ 871.439617] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1686. [ 871.439628] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1687. [ 871.439638] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1688. [ 871.439642] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1689. [ 871.439652] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1690. [ 871.439663] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1691. [ 871.439666] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1692. [ 871.439670] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1693. [ 871.439679] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1694. [ 871.439688] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1695. [ 871.439698] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1696. [ 871.439707] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1697. [ 871.439710] [<ffffffff810523e6>] kthread+0x96/0xa0
  1698. [ 871.439714] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1699. [ 871.439717] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1700. [ 871.439720] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1701. [ 871.439722] ---[ end trace d1535c397c7740dd ]---
  1702. [ 871.444559] ------------[ cut here ]------------
  1703. [ 871.444576] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1704. [ 871.444580] Hardware name: X8ST3
  1705. [ 871.444582] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1706. [ 871.444612] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1707. [ 871.444616] Call Trace:
  1708. [ 871.444623] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1709. [ 871.444629] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1710. [ 871.444642] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1711. [ 871.444660] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1712. [ 871.444672] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1713. [ 871.444684] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1714. [ 871.444695] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1715. [ 871.444702] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1716. [ 871.444716] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1717. [ 871.444733] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1718. [ 871.444750] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1719. [ 871.444757] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1720. [ 871.444774] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1721. [ 871.444791] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1722. [ 871.444797] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1723. [ 871.444813] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1724. [ 871.444828] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1725. [ 871.444844] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1726. [ 871.444859] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1727. [ 871.444864] [<ffffffff810523e6>] kthread+0x96/0xa0
  1728. [ 871.444869] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1729. [ 871.444888] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1730. [ 871.444897] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1731. [ 871.444903] ---[ end trace d1535c397c7740de ]---
  1732. [ 871.450905] ------------[ cut here ]------------
  1733. [ 871.450923] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1734. [ 871.450927] Hardware name: X8ST3
  1735. [ 871.450929] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1736. [ 871.450959] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1737. [ 871.450962] Call Trace:
  1738. [ 871.450970] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1739. [ 871.450976] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1740. [ 871.450989] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1741. [ 871.451007] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1742. [ 871.451020] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1743. [ 871.451031] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1744. [ 871.451043] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1745. [ 871.451050] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1746. [ 871.451064] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1747. [ 871.451081] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1748. [ 871.451099] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1749. [ 871.451105] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1750. [ 871.451122] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1751. [ 871.451139] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1752. [ 871.451145] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1753. [ 871.451161] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1754. [ 871.451176] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1755. [ 871.451192] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1756. [ 871.451208] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1757. [ 871.451213] [<ffffffff810523e6>] kthread+0x96/0xa0
  1758. [ 871.451218] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1759. [ 871.451224] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1760. [ 871.451228] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1761. [ 871.451232] ---[ end trace d1535c397c7740df ]---
  1762. [ 871.456432] ------------[ cut here ]------------
  1763. [ 871.456442] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1764. [ 871.456444] Hardware name: X8ST3
  1765. [ 871.456445] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1766. [ 871.456462] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1767. [ 871.456464] Call Trace:
  1768. [ 871.456468] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1769. [ 871.456471] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1770. [ 871.456479] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1771. [ 871.456489] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1772. [ 871.456496] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1773. [ 871.456502] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1774. [ 871.456509] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1775. [ 871.456513] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1776. [ 871.456521] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1777. [ 871.456531] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1778. [ 871.456541] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1779. [ 871.456544] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1780. [ 871.456554] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1781. [ 871.456564] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1782. [ 871.456567] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1783. [ 871.456571] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1784. [ 871.456579] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1785. [ 871.456588] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1786. [ 871.456597] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1787. [ 871.456606] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1788. [ 871.456609] [<ffffffff810523e6>] kthread+0x96/0xa0
  1789. [ 871.456612] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1790. [ 871.456615] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1791. [ 871.456617] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1792. [ 871.456619] ---[ end trace d1535c397c7740e0 ]---
  1793. [ 871.461356] ------------[ cut here ]------------
  1794. [ 871.461366] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1795. [ 871.461369] Hardware name: X8ST3
  1796. [ 871.461370] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1797. [ 871.461386] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1798. [ 871.461388] Call Trace:
  1799. [ 871.461392] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1800. [ 871.461395] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1801. [ 871.461403] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1802. [ 871.461413] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1803. [ 871.461420] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1804. [ 871.461426] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1805. [ 871.461433] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1806. [ 871.461437] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1807. [ 871.461445] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1808. [ 871.461455] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1809. [ 871.461464] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1810. [ 871.461468] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1811. [ 871.461478] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1812. [ 871.461487] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1813. [ 871.461491] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1814. [ 871.461494] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1815. [ 871.461503] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1816. [ 871.461512] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1817. [ 871.461521] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1818. [ 871.461529] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1819. [ 871.461532] [<ffffffff810523e6>] kthread+0x96/0xa0
  1820. [ 871.461535] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1821. [ 871.461538] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1822. [ 871.461541] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1823. [ 871.461543] ---[ end trace d1535c397c7740e1 ]---
  1824. [ 871.466061] ------------[ cut here ]------------
  1825. [ 871.466080] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1826. [ 871.466082] Hardware name: X8ST3
  1827. [ 871.466083] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1828. [ 871.466100] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1829. [ 871.466101] Call Trace:
  1830. [ 871.466106] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1831. [ 871.466109] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1832. [ 871.466116] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1833. [ 871.466126] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1834. [ 871.466133] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1835. [ 871.466140] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1836. [ 871.466147] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1837. [ 871.466150] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1838. [ 871.466159] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1839. [ 871.466168] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1840. [ 871.466178] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1841. [ 871.466182] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1842. [ 871.466192] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1843. [ 871.466201] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1844. [ 871.466205] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1845. [ 871.466208] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1846. [ 871.466217] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1847. [ 871.466226] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1848. [ 871.466235] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1849. [ 871.466243] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1850. [ 871.466246] [<ffffffff810523e6>] kthread+0x96/0xa0
  1851. [ 871.466249] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1852. [ 871.466252] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1853. [ 871.466255] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1854. [ 871.466257] ---[ end trace d1535c397c7740e2 ]---
  1855. [ 871.470435] ------------[ cut here ]------------
  1856. [ 871.470445] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1857. [ 871.470447] Hardware name: X8ST3
  1858. [ 871.470448] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1859. [ 871.470464] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1860. [ 871.470466] Call Trace:
  1861. [ 871.470470] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1862. [ 871.470474] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1863. [ 871.470481] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1864. [ 871.470491] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1865. [ 871.470498] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1866. [ 871.470505] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1867. [ 871.470511] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1868. [ 871.470515] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1869. [ 871.470523] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1870. [ 871.470533] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1871. [ 871.470543] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1872. [ 871.470547] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1873. [ 871.470557] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1874. [ 871.470566] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1875. [ 871.470570] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1876. [ 871.470573] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1877. [ 871.470582] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1878. [ 871.470591] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1879. [ 871.470600] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1880. [ 871.470608] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1881. [ 871.470611] [<ffffffff810523e6>] kthread+0x96/0xa0
  1882. [ 871.470614] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1883. [ 871.470617] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1884. [ 871.470620] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1885. [ 871.470622] ---[ end trace d1535c397c7740e3 ]---
  1886. [ 871.475220] ------------[ cut here ]------------
  1887. [ 871.475235] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1888. [ 871.475237] Hardware name: X8ST3
  1889. [ 871.475238] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1890. [ 871.475255] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1891. [ 871.475257] Call Trace:
  1892. [ 871.475261] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1893. [ 871.475264] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1894. [ 871.475271] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1895. [ 871.475281] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1896. [ 871.475289] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1897. [ 871.475295] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1898. [ 871.475302] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1899. [ 871.475305] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1900. [ 871.475314] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1901. [ 871.475324] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1902. [ 871.475333] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1903. [ 871.475337] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1904. [ 871.475347] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1905. [ 871.475356] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1906. [ 871.475360] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1907. [ 871.475363] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1908. [ 871.475372] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1909. [ 871.475381] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1910. [ 871.475390] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1911. [ 871.475399] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1912. [ 871.475402] [<ffffffff810523e6>] kthread+0x96/0xa0
  1913. [ 871.475405] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1914. [ 871.475408] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1915. [ 871.475410] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1916. [ 871.475412] ---[ end trace d1535c397c7740e4 ]---
  1917. [ 871.480026] ------------[ cut here ]------------
  1918. [ 871.480036] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1919. [ 871.480038] Hardware name: X8ST3
  1920. [ 871.480040] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1921. [ 871.480056] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1922. [ 871.480058] Call Trace:
  1923. [ 871.480062] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1924. [ 871.480065] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1925. [ 871.480073] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1926. [ 871.480083] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1927. [ 871.480090] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1928. [ 871.480096] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1929. [ 871.480103] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1930. [ 871.480107] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1931. [ 871.480115] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1932. [ 871.480125] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1933. [ 871.480135] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1934. [ 871.480138] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1935. [ 871.480148] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1936. [ 871.480158] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1937. [ 871.480161] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1938. [ 871.480165] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1939. [ 871.480173] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1940. [ 871.480182] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1941. [ 871.480191] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1942. [ 871.480200] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1943. [ 871.480203] [<ffffffff810523e6>] kthread+0x96/0xa0
  1944. [ 871.480206] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1945. [ 871.480209] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1946. [ 871.480211] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1947. [ 871.480213] ---[ end trace d1535c397c7740e5 ]---
  1948. [ 871.484540] ------------[ cut here ]------------
  1949. [ 871.484550] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1950. [ 871.484552] Hardware name: X8ST3
  1951. [ 871.484553] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1952. [ 871.484571] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1953. [ 871.484573] Call Trace:
  1954. [ 871.484577] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1955. [ 871.484580] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1956. [ 871.484588] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1957. [ 871.484598] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1958. [ 871.484605] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1959. [ 871.484612] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1960. [ 871.484618] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1961. [ 871.484622] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1962. [ 871.484630] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1963. [ 871.484640] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1964. [ 871.484650] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1965. [ 871.484653] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1966. [ 871.484663] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1967. [ 871.484673] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1968. [ 871.484676] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  1969. [ 871.484685] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  1970. [ 871.484694] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  1971. [ 871.484703] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1972. [ 871.484712] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  1973. [ 871.484714] [<ffffffff810523e6>] kthread+0x96/0xa0
  1974. [ 871.484718] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  1975. [ 871.484721] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  1976. [ 871.484723] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  1977. [ 871.484725] ---[ end trace d1535c397c7740e6 ]---
  1978. [ 871.489621] ------------[ cut here ]------------
  1979. [ 871.489631] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  1980. [ 871.489633] Hardware name: X8ST3
  1981. [ 871.489634] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  1982. [ 871.489651] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  1983. [ 871.489653] Call Trace:
  1984. [ 871.489657] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  1985. [ 871.489660] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  1986. [ 871.489668] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  1987. [ 871.489678] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  1988. [ 871.489685] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  1989. [ 871.489692] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  1990. [ 871.489698] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  1991. [ 871.489702] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  1992. [ 871.489710] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  1993. [ 871.489720] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  1994. [ 871.489730] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  1995. [ 871.489733] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  1996. [ 871.489743] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  1997. [ 871.489753] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  1998. [ 871.489756] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  1999. [ 871.489760] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2000. [ 871.489768] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2001. [ 871.489777] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2002. [ 871.489786] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2003. [ 871.489795] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2004. [ 871.489798] [<ffffffff810523e6>] kthread+0x96/0xa0
  2005. [ 871.489801] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2006. [ 871.489804] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2007. [ 871.489806] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2008. [ 871.489808] ---[ end trace d1535c397c7740e7 ]---
  2009. [ 871.494509] ------------[ cut here ]------------
  2010. [ 871.494520] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2011. [ 871.494523] Hardware name: X8ST3
  2012. [ 871.494524] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2013. [ 871.494541] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2014. [ 871.494543] Call Trace:
  2015. [ 871.494548] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2016. [ 871.494551] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2017. [ 871.494559] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2018. [ 871.494570] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2019. [ 871.494577] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2020. [ 871.494584] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2021. [ 871.494591] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2022. [ 871.494595] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2023. [ 871.494604] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2024. [ 871.494614] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2025. [ 871.494625] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2026. [ 871.494629] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2027. [ 871.494639] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2028. [ 871.494650] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2029. [ 871.494654] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2030. [ 871.494657] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2031. [ 871.494666] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2032. [ 871.494676] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2033. [ 871.494685] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2034. [ 871.494695] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2035. [ 871.494698] [<ffffffff810523e6>] kthread+0x96/0xa0
  2036. [ 871.494701] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2037. [ 871.494704] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2038. [ 871.494707] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2039. [ 871.494709] ---[ end trace d1535c397c7740e8 ]---
  2040. [ 871.499525] ------------[ cut here ]------------
  2041. [ 871.499536] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2042. [ 871.499538] Hardware name: X8ST3
  2043. [ 871.499539] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2044. [ 871.499557] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2045. [ 871.499559] Call Trace:
  2046. [ 871.499563] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2047. [ 871.499567] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2048. [ 871.499575] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2049. [ 871.499585] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2050. [ 871.499593] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2051. [ 871.499600] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2052. [ 871.499607] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2053. [ 871.499611] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2054. [ 871.499620] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2055. [ 871.499630] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2056. [ 871.499640] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2057. [ 871.499644] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2058. [ 871.499655] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2059. [ 871.499665] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2060. [ 871.499669] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2061. [ 871.499672] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2062. [ 871.499682] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2063. [ 871.499691] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2064. [ 871.499700] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2065. [ 871.499710] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2066. [ 871.499713] [<ffffffff810523e6>] kthread+0x96/0xa0
  2067. [ 871.499716] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2068. [ 871.499719] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2069. [ 871.499722] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2070. [ 871.499724] ---[ end trace d1535c397c7740e9 ]---
  2071. [ 871.504699] ------------[ cut here ]------------
  2072. [ 871.504710] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2073. [ 871.504712] Hardware name: X8ST3
  2074. [ 871.504713] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2075. [ 871.504731] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2076. [ 871.504733] Call Trace:
  2077. [ 871.504737] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2078. [ 871.504741] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2079. [ 871.504749] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2080. [ 871.504759] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2081. [ 871.504767] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2082. [ 871.504774] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2083. [ 871.504781] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2084. [ 871.504785] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2085. [ 871.504794] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2086. [ 871.504804] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2087. [ 871.504815] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2088. [ 871.504819] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2089. [ 871.504829] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2090. [ 871.504839] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2091. [ 871.504843] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2092. [ 871.504846] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2093. [ 871.504856] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2094. [ 871.504865] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2095. [ 871.504874] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2096. [ 871.504915] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2097. [ 871.504921] [<ffffffff810523e6>] kthread+0x96/0xa0
  2098. [ 871.504926] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2099. [ 871.504931] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2100. [ 871.504936] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2101. [ 871.504939] ---[ end trace d1535c397c7740ea ]---
  2102. [ 871.509920] ------------[ cut here ]------------
  2103. [ 871.509931] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2104. [ 871.509933] Hardware name: X8ST3
  2105. [ 871.509934] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2106. [ 871.509952] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2107. [ 871.509954] Call Trace:
  2108. [ 871.509958] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2109. [ 871.509962] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2110. [ 871.509970] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2111. [ 871.509980] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2112. [ 871.509988] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2113. [ 871.509995] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2114. [ 871.510002] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2115. [ 871.510006] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2116. [ 871.510015] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2117. [ 871.510025] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2118. [ 871.510036] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2119. [ 871.510039] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2120. [ 871.510050] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2121. [ 871.510060] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2122. [ 871.510064] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2123. [ 871.510067] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2124. [ 871.510077] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2125. [ 871.510086] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2126. [ 871.510096] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2127. [ 871.510105] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2128. [ 871.510108] [<ffffffff810523e6>] kthread+0x96/0xa0
  2129. [ 871.510111] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2130. [ 871.510115] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2131. [ 871.510117] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2132. [ 871.510119] ---[ end trace d1535c397c7740eb ]---
  2133. [ 871.514526] ------------[ cut here ]------------
  2134. [ 871.514536] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2135. [ 871.514539] Hardware name: X8ST3
  2136. [ 871.514540] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2137. [ 871.514558] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2138. [ 871.514560] Call Trace:
  2139. [ 871.514564] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2140. [ 871.514568] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2141. [ 871.514576] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2142. [ 871.514586] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2143. [ 871.514594] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2144. [ 871.514601] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2145. [ 871.514608] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2146. [ 871.514612] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2147. [ 871.514621] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2148. [ 871.514631] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2149. [ 871.514641] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2150. [ 871.514645] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2151. [ 871.514656] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2152. [ 871.514666] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2153. [ 871.514670] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2154. [ 871.514673] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2155. [ 871.514683] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2156. [ 871.514692] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2157. [ 871.514702] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2158. [ 871.514711] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2159. [ 871.514714] [<ffffffff810523e6>] kthread+0x96/0xa0
  2160. [ 871.514717] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2161. [ 871.514721] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2162. [ 871.514723] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2163. [ 871.514725] ---[ end trace d1535c397c7740ec ]---
  2164. [ 871.519613] ------------[ cut here ]------------
  2165. [ 871.519624] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2166. [ 871.519626] Hardware name: X8ST3
  2167. [ 871.519627] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2168. [ 871.519645] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2169. [ 871.519647] Call Trace:
  2170. [ 871.519651] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2171. [ 871.519655] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2172. [ 871.519663] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2173. [ 871.519673] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2174. [ 871.519681] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2175. [ 871.519688] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2176. [ 871.519695] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2177. [ 871.519699] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2178. [ 871.519708] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2179. [ 871.519718] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2180. [ 871.519728] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2181. [ 871.519732] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2182. [ 871.519743] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2183. [ 871.519753] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2184. [ 871.519757] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2185. [ 871.519760] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2186. [ 871.519770] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2187. [ 871.519779] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2188. [ 871.519789] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2189. [ 871.519798] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2190. [ 871.519801] [<ffffffff810523e6>] kthread+0x96/0xa0
  2191. [ 871.519804] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2192. [ 871.519808] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2193. [ 871.519810] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2194. [ 871.519812] ---[ end trace d1535c397c7740ed ]---
  2195. [ 871.524404] ------------[ cut here ]------------
  2196. [ 871.524415] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2197. [ 871.524417] Hardware name: X8ST3
  2198. [ 871.524419] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2199. [ 871.524436] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2200. [ 871.524438] Call Trace:
  2201. [ 871.524442] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2202. [ 871.524446] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2203. [ 871.524454] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2204. [ 871.524464] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2205. [ 871.524472] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2206. [ 871.524479] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2207. [ 871.524486] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2208. [ 871.524490] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2209. [ 871.524499] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2210. [ 871.524509] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2211. [ 871.524520] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2212. [ 871.524524] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2213. [ 871.524534] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2214. [ 871.524544] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2215. [ 871.524548] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2216. [ 871.524551] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2217. [ 871.524561] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2218. [ 871.524570] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2219. [ 871.524580] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2220. [ 871.524589] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2221. [ 871.524592] [<ffffffff810523e6>] kthread+0x96/0xa0
  2222. [ 871.524595] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2223. [ 871.524598] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2224. [ 871.524601] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2225. [ 871.524603] ---[ end trace d1535c397c7740ee ]---
  2226. [ 871.529453] ------------[ cut here ]------------
  2227. [ 871.529468] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2228. [ 871.529470] Hardware name: X8ST3
  2229. [ 871.529471] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2230. [ 871.529489] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2231. [ 871.529491] Call Trace:
  2232. [ 871.529495] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2233. [ 871.529499] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2234. [ 871.529507] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2235. [ 871.529517] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2236. [ 871.529525] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2237. [ 871.529532] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2238. [ 871.529539] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2239. [ 871.529543] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2240. [ 871.529552] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2241. [ 871.529562] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2242. [ 871.529573] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2243. [ 871.529577] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2244. [ 871.529587] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2245. [ 871.529597] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2246. [ 871.529601] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2247. [ 871.529605] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2248. [ 871.529614] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2249. [ 871.529623] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2250. [ 871.529633] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2251. [ 871.529642] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2252. [ 871.529645] [<ffffffff810523e6>] kthread+0x96/0xa0
  2253. [ 871.529648] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2254. [ 871.529652] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2255. [ 871.529654] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2256. [ 871.529656] ---[ end trace d1535c397c7740ef ]---
  2257. [ 871.534384] ------------[ cut here ]------------
  2258. [ 871.534395] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2259. [ 871.534397] Hardware name: X8ST3
  2260. [ 871.534398] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2261. [ 871.534416] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2262. [ 871.534418] Call Trace:
  2263. [ 871.534422] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2264. [ 871.534426] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2265. [ 871.534434] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2266. [ 871.534444] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2267. [ 871.534452] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2268. [ 871.534459] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2269. [ 871.534466] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2270. [ 871.534470] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2271. [ 871.534479] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2272. [ 871.534489] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2273. [ 871.534499] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2274. [ 871.534503] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2275. [ 871.534514] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2276. [ 871.534524] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2277. [ 871.534528] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2278. [ 871.534531] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2279. [ 871.534540] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2280. [ 871.534550] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2281. [ 871.534559] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2282. [ 871.534568] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2283. [ 871.534571] [<ffffffff810523e6>] kthread+0x96/0xa0
  2284. [ 871.534575] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2285. [ 871.534578] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2286. [ 871.534581] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2287. [ 871.534583] ---[ end trace d1535c397c7740f0 ]---
  2288. [ 871.539405] ------------[ cut here ]------------
  2289. [ 871.539416] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2290. [ 871.539418] Hardware name: X8ST3
  2291. [ 871.539420] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2292. [ 871.539437] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2293. [ 871.539439] Call Trace:
  2294. [ 871.539443] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2295. [ 871.539447] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2296. [ 871.539455] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2297. [ 871.539465] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2298. [ 871.539473] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2299. [ 871.539480] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2300. [ 871.539487] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2301. [ 871.539491] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2302. [ 871.539500] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2303. [ 871.539510] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2304. [ 871.539521] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2305. [ 871.539525] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2306. [ 871.539535] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2307. [ 871.539545] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2308. [ 871.539549] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2309. [ 871.539553] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2310. [ 871.539562] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2311. [ 871.539571] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2312. [ 871.539581] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2313. [ 871.539590] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2314. [ 871.539593] [<ffffffff810523e6>] kthread+0x96/0xa0
  2315. [ 871.539596] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2316. [ 871.539600] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2317. [ 871.539602] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2318. [ 871.539604] ---[ end trace d1535c397c7740f1 ]---
  2319. [ 871.544542] ------------[ cut here ]------------
  2320. [ 871.544553] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2321. [ 871.544555] Hardware name: X8ST3
  2322. [ 871.544556] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2323. [ 871.544574] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2324. [ 871.544576] Call Trace:
  2325. [ 871.544580] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2326. [ 871.544583] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2327. [ 871.544591] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2328. [ 871.544602] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2329. [ 871.544610] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2330. [ 871.544617] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2331. [ 871.544624] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2332. [ 871.544628] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2333. [ 871.544636] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2334. [ 871.544647] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2335. [ 871.544657] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2336. [ 871.544661] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2337. [ 871.544672] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2338. [ 871.544682] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2339. [ 871.544686] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2340. [ 871.544689] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2341. [ 871.544699] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2342. [ 871.544708] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2343. [ 871.544717] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2344. [ 871.544727] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2345. [ 871.544730] [<ffffffff810523e6>] kthread+0x96/0xa0
  2346. [ 871.544733] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2347. [ 871.544736] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2348. [ 871.544739] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2349. [ 871.544741] ---[ end trace d1535c397c7740f2 ]---
  2350. [ 871.549666] ------------[ cut here ]------------
  2351. [ 871.549676] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2352. [ 871.549679] Hardware name: X8ST3
  2353. [ 871.549680] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2354. [ 871.549697] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2355. [ 871.549699] Call Trace:
  2356. [ 871.549704] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2357. [ 871.549707] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2358. [ 871.549715] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2359. [ 871.549726] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2360. [ 871.549734] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2361. [ 871.549740] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2362. [ 871.549748] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2363. [ 871.549752] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2364. [ 871.549760] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2365. [ 871.549771] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2366. [ 871.549781] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2367. [ 871.549785] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2368. [ 871.549796] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2369. [ 871.549806] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2370. [ 871.549810] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2371. [ 871.549813] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2372. [ 871.549823] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2373. [ 871.549832] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2374. [ 871.549841] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2375. [ 871.549851] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2376. [ 871.549854] [<ffffffff810523e6>] kthread+0x96/0xa0
  2377. [ 871.549857] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2378. [ 871.549860] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2379. [ 871.549863] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2380. [ 871.549865] ---[ end trace d1535c397c7740f3 ]---
  2381. [ 871.554519] ------------[ cut here ]------------
  2382. [ 871.554533] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2383. [ 871.554535] Hardware name: X8ST3
  2384. [ 871.554537] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2385. [ 871.554554] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2386. [ 871.554556] Call Trace:
  2387. [ 871.554560] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2388. [ 871.554564] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2389. [ 871.554572] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2390. [ 871.554583] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2391. [ 871.554590] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2392. [ 871.554597] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2393. [ 871.554604] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2394. [ 871.554608] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2395. [ 871.554617] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2396. [ 871.554627] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2397. [ 871.554638] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2398. [ 871.554642] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2399. [ 871.554652] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2400. [ 871.554662] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2401. [ 871.554666] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2402. [ 871.554670] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2403. [ 871.554679] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2404. [ 871.554688] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2405. [ 871.554698] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2406. [ 871.554707] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2407. [ 871.554710] [<ffffffff810523e6>] kthread+0x96/0xa0
  2408. [ 871.554713] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2409. [ 871.554717] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2410. [ 871.554719] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2411. [ 871.554721] ---[ end trace d1535c397c7740f4 ]---
  2412. [ 871.559229] ------------[ cut here ]------------
  2413. [ 871.559240] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2414. [ 871.559242] Hardware name: X8ST3
  2415. [ 871.559244] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2416. [ 871.559261] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2417. [ 871.559263] Call Trace:
  2418. [ 871.559268] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2419. [ 871.559271] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2420. [ 871.559279] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2421. [ 871.559290] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2422. [ 871.559297] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2423. [ 871.559304] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2424. [ 871.559311] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2425. [ 871.559315] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2426. [ 871.559324] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2427. [ 871.559334] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2428. [ 871.559345] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2429. [ 871.559349] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2430. [ 871.559359] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2431. [ 871.559369] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2432. [ 871.559373] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2433. [ 871.559377] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2434. [ 871.559386] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2435. [ 871.559395] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2436. [ 871.559405] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2437. [ 871.559414] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2438. [ 871.559417] [<ffffffff810523e6>] kthread+0x96/0xa0
  2439. [ 871.559421] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2440. [ 871.559424] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2441. [ 871.559427] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2442. [ 871.559429] ---[ end trace d1535c397c7740f5 ]---
  2443. [ 871.564262] ------------[ cut here ]------------
  2444. [ 871.564272] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2445. [ 871.564275] Hardware name: X8ST3
  2446. [ 871.564276] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2447. [ 871.564293] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2448. [ 871.564295] Call Trace:
  2449. [ 871.564300] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2450. [ 871.564303] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2451. [ 871.564311] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2452. [ 871.564322] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2453. [ 871.564329] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2454. [ 871.564336] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2455. [ 871.564343] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2456. [ 871.564347] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2457. [ 871.564356] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2458. [ 871.564366] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2459. [ 871.564377] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2460. [ 871.564381] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2461. [ 871.564391] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2462. [ 871.564401] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2463. [ 871.564405] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2464. [ 871.564409] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2465. [ 871.564418] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2466. [ 871.564427] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2467. [ 871.564437] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2468. [ 871.564446] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2469. [ 871.564449] [<ffffffff810523e6>] kthread+0x96/0xa0
  2470. [ 871.564452] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2471. [ 871.564455] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2472. [ 871.564458] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2473. [ 871.564460] ---[ end trace d1535c397c7740f6 ]---
  2474. [ 871.568573] ------------[ cut here ]------------
  2475. [ 871.568583] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2476. [ 871.568586] Hardware name: X8ST3
  2477. [ 871.568587] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2478. [ 871.568604] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2479. [ 871.568606] Call Trace:
  2480. [ 871.568611] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2481. [ 871.568614] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2482. [ 871.568622] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2483. [ 871.568633] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2484. [ 871.568641] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2485. [ 871.568648] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2486. [ 871.568655] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2487. [ 871.568659] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2488. [ 871.568667] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2489. [ 871.568678] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2490. [ 871.568688] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2491. [ 871.568692] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2492. [ 871.568703] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2493. [ 871.568713] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2494. [ 871.568717] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2495. [ 871.568720] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2496. [ 871.568730] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2497. [ 871.568739] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2498. [ 871.568748] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2499. [ 871.568758] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2500. [ 871.568761] [<ffffffff810523e6>] kthread+0x96/0xa0
  2501. [ 871.568764] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2502. [ 871.568767] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2503. [ 871.568770] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2504. [ 871.568772] ---[ end trace d1535c397c7740f7 ]---
  2505. [ 871.573761] ------------[ cut here ]------------
  2506. [ 871.573772] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2507. [ 871.573774] Hardware name: X8ST3
  2508. [ 871.573775] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2509. [ 871.573793] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2510. [ 871.573795] Call Trace:
  2511. [ 871.573799] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2512. [ 871.573803] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2513. [ 871.573811] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2514. [ 871.573821] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2515. [ 871.573829] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2516. [ 871.573836] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2517. [ 871.573843] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2518. [ 871.573847] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2519. [ 871.573855] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2520. [ 871.573866] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2521. [ 871.573876] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2522. [ 871.573911] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2523. [ 871.573921] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2524. [ 871.573934] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2525. [ 871.573940] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2526. [ 871.573945] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2527. [ 871.573957] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2528. [ 871.573968] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2529. [ 871.573979] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2530. [ 871.573991] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2531. [ 871.573996] [<ffffffff810523e6>] kthread+0x96/0xa0
  2532. [ 871.574001] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2533. [ 871.574006] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2534. [ 871.574011] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2535. [ 871.574014] ---[ end trace d1535c397c7740f8 ]---
  2536. [ 871.578582] ------------[ cut here ]------------
  2537. [ 871.578592] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2538. [ 871.578595] Hardware name: X8ST3
  2539. [ 871.578596] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2540. [ 871.578613] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2541. [ 871.578616] Call Trace:
  2542. [ 871.578620] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2543. [ 871.578623] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2544. [ 871.578631] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2545. [ 871.578642] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2546. [ 871.578650] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2547. [ 871.578657] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2548. [ 871.578664] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2549. [ 871.578668] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2550. [ 871.578676] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2551. [ 871.578687] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2552. [ 871.578697] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2553. [ 871.578701] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2554. [ 871.578712] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2555. [ 871.578722] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2556. [ 871.578725] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2557. [ 871.578729] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2558. [ 871.578738] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2559. [ 871.578747] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2560. [ 871.578757] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2561. [ 871.578766] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2562. [ 871.578769] [<ffffffff810523e6>] kthread+0x96/0xa0
  2563. [ 871.578772] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2564. [ 871.578776] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2565. [ 871.578778] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2566. [ 871.578780] ---[ end trace d1535c397c7740f9 ]---
  2567. [ 871.583566] ------------[ cut here ]------------
  2568. [ 871.583577] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2569. [ 871.583579] Hardware name: X8ST3
  2570. [ 871.583580] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2571. [ 871.583598] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2572. [ 871.583600] Call Trace:
  2573. [ 871.583604] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2574. [ 871.583607] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2575. [ 871.583616] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2576. [ 871.583626] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2577. [ 871.583634] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2578. [ 871.583641] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2579. [ 871.583648] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2580. [ 871.583652] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2581. [ 871.583660] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2582. [ 871.583671] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2583. [ 871.583681] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2584. [ 871.583685] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2585. [ 871.583695] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2586. [ 871.583706] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2587. [ 871.583710] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2588. [ 871.583713] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2589. [ 871.583722] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2590. [ 871.583731] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2591. [ 871.583741] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2592. [ 871.583750] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2593. [ 871.583753] [<ffffffff810523e6>] kthread+0x96/0xa0
  2594. [ 871.583757] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2595. [ 871.583760] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2596. [ 871.583762] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2597. [ 871.583764] ---[ end trace d1535c397c7740fa ]---
  2598. [ 871.588581] ------------[ cut here ]------------
  2599. [ 871.588592] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2600. [ 871.588594] Hardware name: X8ST3
  2601. [ 871.588596] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2602. [ 871.588613] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2603. [ 871.588615] Call Trace:
  2604. [ 871.588619] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2605. [ 871.588623] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2606. [ 871.588631] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2607. [ 871.588641] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2608. [ 871.588649] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2609. [ 871.588656] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2610. [ 871.588663] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2611. [ 871.588667] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2612. [ 871.588676] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2613. [ 871.588686] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2614. [ 871.588696] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2615. [ 871.588700] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2616. [ 871.588711] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2617. [ 871.588721] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2618. [ 871.588725] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2619. [ 871.588728] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2620. [ 871.588738] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2621. [ 871.588747] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2622. [ 871.588756] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2623. [ 871.588766] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2624. [ 871.588769] [<ffffffff810523e6>] kthread+0x96/0xa0
  2625. [ 871.588772] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2626. [ 871.588775] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2627. [ 871.588778] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2628. [ 871.588780] ---[ end trace d1535c397c7740fb ]---
  2629. [ 871.593593] ------------[ cut here ]------------
  2630. [ 871.593604] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2631. [ 871.593606] Hardware name: X8ST3
  2632. [ 871.593607] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2633. [ 871.593625] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2634. [ 871.593627] Call Trace:
  2635. [ 871.593631] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2636. [ 871.593635] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2637. [ 871.593643] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2638. [ 871.593653] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2639. [ 871.593661] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2640. [ 871.593668] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2641. [ 871.593675] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2642. [ 871.593679] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2643. [ 871.593688] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2644. [ 871.593698] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2645. [ 871.593709] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2646. [ 871.593712] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2647. [ 871.593723] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2648. [ 871.593733] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2649. [ 871.593737] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2650. [ 871.593741] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2651. [ 871.593750] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2652. [ 871.593759] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2653. [ 871.593769] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2654. [ 871.593778] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2655. [ 871.593781] [<ffffffff810523e6>] kthread+0x96/0xa0
  2656. [ 871.593785] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2657. [ 871.593788] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2658. [ 871.593790] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2659. [ 871.593792] ---[ end trace d1535c397c7740fc ]---
  2660. [ 871.598558] ------------[ cut here ]------------
  2661. [ 871.598569] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2662. [ 871.598571] Hardware name: X8ST3
  2663. [ 871.598572] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2664. [ 871.598590] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2665. [ 871.598592] Call Trace:
  2666. [ 871.598596] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2667. [ 871.598600] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2668. [ 871.598608] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2669. [ 871.598619] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2670. [ 871.598626] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2671. [ 871.598633] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2672. [ 871.598640] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2673. [ 871.598644] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2674. [ 871.598653] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2675. [ 871.598663] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2676. [ 871.598674] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2677. [ 871.598677] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2678. [ 871.598688] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2679. [ 871.598698] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2680. [ 871.598702] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2681. [ 871.598705] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2682. [ 871.598715] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2683. [ 871.598724] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2684. [ 871.598733] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2685. [ 871.598743] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2686. [ 871.598746] [<ffffffff810523e6>] kthread+0x96/0xa0
  2687. [ 871.598749] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2688. [ 871.598752] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2689. [ 871.598755] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2690. [ 871.598757] ---[ end trace d1535c397c7740fd ]---
  2691. [ 871.603312] ------------[ cut here ]------------
  2692. [ 871.603322] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2693. [ 871.603324] Hardware name: X8ST3
  2694. [ 871.603325] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2695. [ 871.603343] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2696. [ 871.603345] Call Trace:
  2697. [ 871.603349] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2698. [ 871.603353] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2699. [ 871.603361] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2700. [ 871.603371] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2701. [ 871.603379] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2702. [ 871.603386] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2703. [ 871.603393] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2704. [ 871.603397] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2705. [ 871.603406] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2706. [ 871.603416] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2707. [ 871.603427] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2708. [ 871.603431] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2709. [ 871.603441] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2710. [ 871.603451] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2711. [ 871.603455] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2712. [ 871.603458] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2713. [ 871.603468] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2714. [ 871.603477] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2715. [ 871.603487] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2716. [ 871.603496] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2717. [ 871.603499] [<ffffffff810523e6>] kthread+0x96/0xa0
  2718. [ 871.603502] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2719. [ 871.603505] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2720. [ 871.603508] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2721. [ 871.603510] ---[ end trace d1535c397c7740fe ]---
  2722. [ 871.608338] ------------[ cut here ]------------
  2723. [ 871.608349] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2724. [ 871.608351] Hardware name: X8ST3
  2725. [ 871.608352] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2726. [ 871.608370] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2727. [ 871.608372] Call Trace:
  2728. [ 871.608376] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2729. [ 871.608379] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2730. [ 871.608387] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2731. [ 871.608398] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2732. [ 871.608406] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2733. [ 871.608412] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2734. [ 871.608420] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2735. [ 871.608424] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2736. [ 871.608432] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2737. [ 871.608443] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2738. [ 871.608453] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2739. [ 871.608457] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2740. [ 871.608467] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2741. [ 871.608478] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2742. [ 871.608482] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2743. [ 871.608485] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2744. [ 871.608494] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2745. [ 871.608504] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2746. [ 871.608513] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2747. [ 871.608522] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2748. [ 871.608526] [<ffffffff810523e6>] kthread+0x96/0xa0
  2749. [ 871.608529] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2750. [ 871.608532] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2751. [ 871.608535] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2752. [ 871.608537] ---[ end trace d1535c397c7740ff ]---
  2753. [ 871.613373] ------------[ cut here ]------------
  2754. [ 871.613384] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2755. [ 871.613386] Hardware name: X8ST3
  2756. [ 871.613388] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2757. [ 871.613405] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2758. [ 871.613407] Call Trace:
  2759. [ 871.613411] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2760. [ 871.613415] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2761. [ 871.613423] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2762. [ 871.613434] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2763. [ 871.613441] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2764. [ 871.613448] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2765. [ 871.613455] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2766. [ 871.613459] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2767. [ 871.613468] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2768. [ 871.613478] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2769. [ 871.613489] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2770. [ 871.613493] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2771. [ 871.613503] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2772. [ 871.613514] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2773. [ 871.613518] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2774. [ 871.613521] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2775. [ 871.613530] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2776. [ 871.613540] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2777. [ 871.613549] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2778. [ 871.613559] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2779. [ 871.613562] [<ffffffff810523e6>] kthread+0x96/0xa0
  2780. [ 871.613565] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2781. [ 871.613568] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2782. [ 871.613571] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2783. [ 871.613573] ---[ end trace d1535c397c774100 ]---
  2784. [ 871.618353] ------------[ cut here ]------------
  2785. [ 871.618364] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2786. [ 871.618366] Hardware name: X8ST3
  2787. [ 871.618368] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2788. [ 871.618385] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2789. [ 871.618387] Call Trace:
  2790. [ 871.618391] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2791. [ 871.618395] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2792. [ 871.618403] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2793. [ 871.618414] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2794. [ 871.618421] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2795. [ 871.618428] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2796. [ 871.618435] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2797. [ 871.618439] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2798. [ 871.618448] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2799. [ 871.618458] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2800. [ 871.618469] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2801. [ 871.618473] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2802. [ 871.618483] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2803. [ 871.618493] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2804. [ 871.618497] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2805. [ 871.618501] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2806. [ 871.618510] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2807. [ 871.618519] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2808. [ 871.618529] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2809. [ 871.618538] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2810. [ 871.618541] [<ffffffff810523e6>] kthread+0x96/0xa0
  2811. [ 871.618545] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2812. [ 871.618548] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2813. [ 871.618551] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2814. [ 871.618553] ---[ end trace d1535c397c774101 ]---
  2815. [ 871.623375] ------------[ cut here ]------------
  2816. [ 871.623386] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2817. [ 871.623388] Hardware name: X8ST3
  2818. [ 871.623389] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2819. [ 871.623407] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2820. [ 871.623409] Call Trace:
  2821. [ 871.623413] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2822. [ 871.623417] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2823. [ 871.623425] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2824. [ 871.623435] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2825. [ 871.623443] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2826. [ 871.623450] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2827. [ 871.623457] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2828. [ 871.623461] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2829. [ 871.623470] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2830. [ 871.623480] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2831. [ 871.623491] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2832. [ 871.623495] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2833. [ 871.623505] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2834. [ 871.623515] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2835. [ 871.623519] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2836. [ 871.623523] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2837. [ 871.623532] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2838. [ 871.623541] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2839. [ 871.623551] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2840. [ 871.623560] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2841. [ 871.623563] [<ffffffff810523e6>] kthread+0x96/0xa0
  2842. [ 871.623566] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2843. [ 871.623569] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2844. [ 871.623572] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2845. [ 871.623574] ---[ end trace d1535c397c774102 ]---
  2846. [ 871.628911] ------------[ cut here ]------------
  2847. [ 871.628928] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2848. [ 871.628932] Hardware name: X8ST3
  2849. [ 871.628934] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2850. [ 871.628962] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2851. [ 871.628966] Call Trace:
  2852. [ 871.628973] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2853. [ 871.628979] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2854. [ 871.628992] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2855. [ 871.629010] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2856. [ 871.629023] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2857. [ 871.629034] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2858. [ 871.629046] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2859. [ 871.629052] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2860. [ 871.629067] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2861. [ 871.629084] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2862. [ 871.629102] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2863. [ 871.629108] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2864. [ 871.629125] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2865. [ 871.629142] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2866. [ 871.629149] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2867. [ 871.629154] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2868. [ 871.629170] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2869. [ 871.629185] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2870. [ 871.629201] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2871. [ 871.629217] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2872. [ 871.629222] [<ffffffff810523e6>] kthread+0x96/0xa0
  2873. [ 871.629227] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2874. [ 871.629232] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2875. [ 871.629237] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2876. [ 871.629240] ---[ end trace d1535c397c774103 ]---
  2877. [ 871.635454] ------------[ cut here ]------------
  2878. [ 871.635464] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2879. [ 871.635466] Hardware name: X8ST3
  2880. [ 871.635467] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2881. [ 871.635484] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2882. [ 871.635486] Call Trace:
  2883. [ 871.635490] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2884. [ 871.635493] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2885. [ 871.635501] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2886. [ 871.635510] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2887. [ 871.635518] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2888. [ 871.635524] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2889. [ 871.635531] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2890. [ 871.635535] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2891. [ 871.635543] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2892. [ 871.635553] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2893. [ 871.635562] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2894. [ 871.635566] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2895. [ 871.635576] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2896. [ 871.635585] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2897. [ 871.635589] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2898. [ 871.635592] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2899. [ 871.635601] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2900. [ 871.635610] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2901. [ 871.635619] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2902. [ 871.635628] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2903. [ 871.635630] [<ffffffff810523e6>] kthread+0x96/0xa0
  2904. [ 871.635633] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2905. [ 871.635636] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2906. [ 871.635686] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2907. [ 871.635688] ---[ end trace d1535c397c774104 ]---
  2908. [ 871.640256] ------------[ cut here ]------------
  2909. [ 871.640270] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2910. [ 871.640273] Hardware name: X8ST3
  2911. [ 871.640274] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2912. [ 871.640290] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2913. [ 871.640292] Call Trace:
  2914. [ 871.640296] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2915. [ 871.640300] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2916. [ 871.640307] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2917. [ 871.640317] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2918. [ 871.640324] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2919. [ 871.640331] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2920. [ 871.640337] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2921. [ 871.640341] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2922. [ 871.640349] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2923. [ 871.640359] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2924. [ 871.640369] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2925. [ 871.640372] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2926. [ 871.640382] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2927. [ 871.640392] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2928. [ 871.640395] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2929. [ 871.640398] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2930. [ 871.640407] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2931. [ 871.640416] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2932. [ 871.640425] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2933. [ 871.640434] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2934. [ 871.640436] [<ffffffff810523e6>] kthread+0x96/0xa0
  2935. [ 871.640439] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2936. [ 871.640442] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2937. [ 871.640445] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2938. [ 871.640447] ---[ end trace d1535c397c774105 ]---
  2939. [ 871.645008] ------------[ cut here ]------------
  2940. [ 871.645025] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2941. [ 871.645029] Hardware name: X8ST3
  2942. [ 871.645031] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2943. [ 871.645054] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2944. [ 871.645056] Call Trace:
  2945. [ 871.645060] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2946. [ 871.645064] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2947. [ 871.645072] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2948. [ 871.645083] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2949. [ 871.645090] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2950. [ 871.645097] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2951. [ 871.645104] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2952. [ 871.645108] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2953. [ 871.645117] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2954. [ 871.645128] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2955. [ 871.645138] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2956. [ 871.645142] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2957. [ 871.645152] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2958. [ 871.645163] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2959. [ 871.645166] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2960. [ 871.645170] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2961. [ 871.645179] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2962. [ 871.645188] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2963. [ 871.645198] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2964. [ 871.645207] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2965. [ 871.645210] [<ffffffff810523e6>] kthread+0x96/0xa0
  2966. [ 871.645214] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2967. [ 871.645217] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2968. [ 871.645219] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  2969. [ 871.645221] ---[ end trace d1535c397c774106 ]---
  2970. [ 871.650408] ------------[ cut here ]------------
  2971. [ 871.650419] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  2972. [ 871.650421] Hardware name: X8ST3
  2973. [ 871.650422] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  2974. [ 871.650440] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  2975. [ 871.650442] Call Trace:
  2976. [ 871.650446] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  2977. [ 871.650450] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  2978. [ 871.650458] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  2979. [ 871.650468] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  2980. [ 871.650476] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  2981. [ 871.650483] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  2982. [ 871.650490] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  2983. [ 871.650494] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  2984. [ 871.650503] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  2985. [ 871.650513] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  2986. [ 871.650524] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  2987. [ 871.650527] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  2988. [ 871.650538] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  2989. [ 871.650548] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  2990. [ 871.650552] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  2991. [ 871.650555] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  2992. [ 871.650565] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  2993. [ 871.650574] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  2994. [ 871.650584] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2995. [ 871.650593] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  2996. [ 871.650596] [<ffffffff810523e6>] kthread+0x96/0xa0
  2997. [ 871.650599] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  2998. [ 871.650602] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  2999. [ 871.650605] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3000. [ 871.650607] ---[ end trace d1535c397c774107 ]---
  3001. [ 871.655385] ------------[ cut here ]------------
  3002. [ 871.655396] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3003. [ 871.655398] Hardware name: X8ST3
  3004. [ 871.655399] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3005. [ 871.655417] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3006. [ 871.655419] Call Trace:
  3007. [ 871.655423] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3008. [ 871.655427] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3009. [ 871.655435] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3010. [ 871.655445] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3011. [ 871.655453] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3012. [ 871.655460] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3013. [ 871.655467] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3014. [ 871.655471] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3015. [ 871.655480] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3016. [ 871.655490] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3017. [ 871.655500] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3018. [ 871.655504] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3019. [ 871.655515] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3020. [ 871.655525] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3021. [ 871.655529] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3022. [ 871.655532] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3023. [ 871.655542] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3024. [ 871.655551] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3025. [ 871.655560] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3026. [ 871.655570] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3027. [ 871.655573] [<ffffffff810523e6>] kthread+0x96/0xa0
  3028. [ 871.655576] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3029. [ 871.655579] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3030. [ 871.655582] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3031. [ 871.655584] ---[ end trace d1535c397c774108 ]---
  3032. [ 871.660642] ------------[ cut here ]------------
  3033. [ 871.660652] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3034. [ 871.660655] Hardware name: X8ST3
  3035. [ 871.660656] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3036. [ 871.660673] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3037. [ 871.660675] Call Trace:
  3038. [ 871.660680] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3039. [ 871.660683] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3040. [ 871.660691] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3041. [ 871.660702] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3042. [ 871.660709] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3043. [ 871.660716] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3044. [ 871.660723] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3045. [ 871.660727] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3046. [ 871.660736] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3047. [ 871.660746] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3048. [ 871.660757] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3049. [ 871.660761] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3050. [ 871.660771] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3051. [ 871.660781] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3052. [ 871.660785] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3053. [ 871.660789] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3054. [ 871.660798] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3055. [ 871.660807] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3056. [ 871.660817] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3057. [ 871.660826] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3058. [ 871.660829] [<ffffffff810523e6>] kthread+0x96/0xa0
  3059. [ 871.660832] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3060. [ 871.660836] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3061. [ 871.660838] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3062. [ 871.660840] ---[ end trace d1535c397c774109 ]---
  3063. [ 871.665448] ------------[ cut here ]------------
  3064. [ 871.665458] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3065. [ 871.665461] Hardware name: X8ST3
  3066. [ 871.665462] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3067. [ 871.665479] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3068. [ 871.665481] Call Trace:
  3069. [ 871.665486] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3070. [ 871.665489] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3071. [ 871.665497] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3072. [ 871.665508] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3073. [ 871.665515] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3074. [ 871.665522] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3075. [ 871.665530] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3076. [ 871.665533] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3077. [ 871.665542] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3078. [ 871.665553] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3079. [ 871.665563] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3080. [ 871.665567] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3081. [ 871.665578] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3082. [ 871.665588] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3083. [ 871.665592] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3084. [ 871.665595] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3085. [ 871.665604] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3086. [ 871.665614] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3087. [ 871.665623] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3088. [ 871.665633] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3089. [ 871.665636] [<ffffffff810523e6>] kthread+0x96/0xa0
  3090. [ 871.665639] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3091. [ 871.665642] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3092. [ 871.665645] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3093. [ 871.665647] ---[ end trace d1535c397c77410a ]---
  3094. [ 871.670525] ------------[ cut here ]------------
  3095. [ 871.670535] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3096. [ 871.670537] Hardware name: X8ST3
  3097. [ 871.670539] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3098. [ 871.670556] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3099. [ 871.670558] Call Trace:
  3100. [ 871.670562] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3101. [ 871.670566] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3102. [ 871.670574] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3103. [ 871.670584] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3104. [ 871.670592] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3105. [ 871.670599] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3106. [ 871.670606] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3107. [ 871.670610] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3108. [ 871.670619] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3109. [ 871.670629] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3110. [ 871.670640] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3111. [ 871.670644] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3112. [ 871.670654] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3113. [ 871.670664] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3114. [ 871.670668] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3115. [ 871.670672] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3116. [ 871.670681] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3117. [ 871.670690] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3118. [ 871.670700] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3119. [ 871.670709] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3120. [ 871.670712] [<ffffffff810523e6>] kthread+0x96/0xa0
  3121. [ 871.670716] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3122. [ 871.670719] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3123. [ 871.670721] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3124. [ 871.670723] ---[ end trace d1535c397c77410b ]---
  3125. [ 871.675457] ------------[ cut here ]------------
  3126. [ 871.675467] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3127. [ 871.675469] Hardware name: X8ST3
  3128. [ 871.675471] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3129. [ 871.675488] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3130. [ 871.675490] Call Trace:
  3131. [ 871.675494] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3132. [ 871.675498] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3133. [ 871.675506] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3134. [ 871.675516] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3135. [ 871.675524] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3136. [ 871.675531] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3137. [ 871.675538] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3138. [ 871.675542] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3139. [ 871.675551] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3140. [ 871.675561] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3141. [ 871.675572] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3142. [ 871.675576] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3143. [ 871.675586] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3144. [ 871.675596] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3145. [ 871.675600] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3146. [ 871.675604] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3147. [ 871.675613] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3148. [ 871.675622] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3149. [ 871.675632] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3150. [ 871.675641] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3151. [ 871.675644] [<ffffffff810523e6>] kthread+0x96/0xa0
  3152. [ 871.675648] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3153. [ 871.675651] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3154. [ 871.675654] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3155. [ 871.675656] ---[ end trace d1535c397c77410c ]---
  3156. [ 871.680552] ------------[ cut here ]------------
  3157. [ 871.680562] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3158. [ 871.680564] Hardware name: X8ST3
  3159. [ 871.680566] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3160. [ 871.680583] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3161. [ 871.680585] Call Trace:
  3162. [ 871.680590] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3163. [ 871.680593] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3164. [ 871.680601] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3165. [ 871.680612] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3166. [ 871.680619] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3167. [ 871.680626] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3168. [ 871.680633] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3169. [ 871.680637] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3170. [ 871.680646] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3171. [ 871.680656] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3172. [ 871.680667] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3173. [ 871.680671] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3174. [ 871.680681] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3175. [ 871.680691] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3176. [ 871.680695] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3177. [ 871.680699] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3178. [ 871.680708] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3179. [ 871.680717] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3180. [ 871.680727] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3181. [ 871.680736] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3182. [ 871.680739] [<ffffffff810523e6>] kthread+0x96/0xa0
  3183. [ 871.680742] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3184. [ 871.680745] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3185. [ 871.680748] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3186. [ 871.680750] ---[ end trace d1535c397c77410d ]---
  3187. [ 871.685690] ------------[ cut here ]------------
  3188. [ 871.685701] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3189. [ 871.685703] Hardware name: X8ST3
  3190. [ 871.685704] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3191. [ 871.685721] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3192. [ 871.685724] Call Trace:
  3193. [ 871.685728] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3194. [ 871.685731] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3195. [ 871.685739] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3196. [ 871.685750] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3197. [ 871.685758] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3198. [ 871.685765] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3199. [ 871.685772] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3200. [ 871.685775] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3201. [ 871.685784] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3202. [ 871.685795] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3203. [ 871.685805] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3204. [ 871.685809] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3205. [ 871.685819] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3206. [ 871.685830] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3207. [ 871.685834] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3208. [ 871.685837] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3209. [ 871.685847] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3210. [ 871.685856] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3211. [ 871.685865] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3212. [ 871.685875] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3213. [ 871.685910] [<ffffffff810523e6>] kthread+0x96/0xa0
  3214. [ 871.685914] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3215. [ 871.685917] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3216. [ 871.685922] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3217. [ 871.685926] ---[ end trace d1535c397c77410e ]---
  3218. [ 871.690800] ------------[ cut here ]------------
  3219. [ 871.690810] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3220. [ 871.690813] Hardware name: X8ST3
  3221. [ 871.690814] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3222. [ 871.690831] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3223. [ 871.690833] Call Trace:
  3224. [ 871.690838] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3225. [ 871.690841] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3226. [ 871.690849] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3227. [ 871.690860] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3228. [ 871.690867] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3229. [ 871.690874] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3230. [ 871.690916] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3231. [ 871.690920] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3232. [ 871.690931] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3233. [ 871.690943] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3234. [ 871.690955] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3235. [ 871.690961] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3236. [ 871.690974] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3237. [ 871.690986] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3238. [ 871.690992] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3239. [ 871.690997] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3240. [ 871.691008] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3241. [ 871.691019] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3242. [ 871.691031] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3243. [ 871.691042] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3244. [ 871.691047] [<ffffffff810523e6>] kthread+0x96/0xa0
  3245. [ 871.691052] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3246. [ 871.691057] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3247. [ 871.691062] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3248. [ 871.691065] ---[ end trace d1535c397c77410f ]---
  3249. [ 871.695620] ------------[ cut here ]------------
  3250. [ 871.695631] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3251. [ 871.695633] Hardware name: X8ST3
  3252. [ 871.695634] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3253. [ 871.695652] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3254. [ 871.695654] Call Trace:
  3255. [ 871.695658] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3256. [ 871.695662] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3257. [ 871.695670] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3258. [ 871.695680] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3259. [ 871.695688] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3260. [ 871.695695] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3261. [ 871.695702] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3262. [ 871.695706] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3263. [ 871.695715] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3264. [ 871.695725] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3265. [ 871.695736] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3266. [ 871.695740] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3267. [ 871.695750] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3268. [ 871.695760] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3269. [ 871.695764] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3270. [ 871.695768] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3271. [ 871.695777] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3272. [ 871.695786] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3273. [ 871.695796] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3274. [ 871.695805] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3275. [ 871.695808] [<ffffffff810523e6>] kthread+0x96/0xa0
  3276. [ 871.695812] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3277. [ 871.695815] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3278. [ 871.695817] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3279. [ 871.695820] ---[ end trace d1535c397c774110 ]---
  3280. [ 871.700624] ------------[ cut here ]------------
  3281. [ 871.700635] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3282. [ 871.700637] Hardware name: X8ST3
  3283. [ 871.700638] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3284. [ 871.700656] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3285. [ 871.700658] Call Trace:
  3286. [ 871.700662] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3287. [ 871.700666] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3288. [ 871.700674] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3289. [ 871.700684] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3290. [ 871.700692] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3291. [ 871.700699] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3292. [ 871.700706] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3293. [ 871.700710] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3294. [ 871.700719] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3295. [ 871.700729] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3296. [ 871.700740] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3297. [ 871.700743] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3298. [ 871.700754] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3299. [ 871.700764] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3300. [ 871.700768] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3301. [ 871.700771] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3302. [ 871.700781] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3303. [ 871.700790] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3304. [ 871.700800] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3305. [ 871.700809] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3306. [ 871.700812] [<ffffffff810523e6>] kthread+0x96/0xa0
  3307. [ 871.700815] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3308. [ 871.700819] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3309. [ 871.700821] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3310. [ 871.700823] ---[ end trace d1535c397c774111 ]---
  3311. [ 871.705486] ------------[ cut here ]------------
  3312. [ 871.705497] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3313. [ 871.705499] Hardware name: X8ST3
  3314. [ 871.705500] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3315. [ 871.705518] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3316. [ 871.705520] Call Trace:
  3317. [ 871.705524] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3318. [ 871.705528] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3319. [ 871.705536] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3320. [ 871.705546] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3321. [ 871.705554] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3322. [ 871.705561] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3323. [ 871.705568] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3324. [ 871.705572] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3325. [ 871.705581] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3326. [ 871.705591] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3327. [ 871.705602] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3328. [ 871.705606] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3329. [ 871.705616] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3330. [ 871.705626] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3331. [ 871.705630] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3332. [ 871.705634] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3333. [ 871.705643] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3334. [ 871.705652] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3335. [ 871.705662] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3336. [ 871.705671] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3337. [ 871.705674] [<ffffffff810523e6>] kthread+0x96/0xa0
  3338. [ 871.705678] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3339. [ 871.705681] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3340. [ 871.705683] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3341. [ 871.705685] ---[ end trace d1535c397c774112 ]---
  3342. [ 871.710464] ------------[ cut here ]------------
  3343. [ 871.710475] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3344. [ 871.710477] Hardware name: X8ST3
  3345. [ 871.710478] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3346. [ 871.710496] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3347. [ 871.710498] Call Trace:
  3348. [ 871.710502] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3349. [ 871.710506] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3350. [ 871.710514] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3351. [ 871.710524] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3352. [ 871.710532] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3353. [ 871.710539] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3354. [ 871.710546] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3355. [ 871.710550] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3356. [ 871.710558] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3357. [ 871.710569] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3358. [ 871.710579] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3359. [ 871.710583] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3360. [ 871.710594] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3361. [ 871.710604] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3362. [ 871.710608] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3363. [ 871.710611] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3364. [ 871.710621] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3365. [ 871.710630] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3366. [ 871.710639] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3367. [ 871.710649] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3368. [ 871.710652] [<ffffffff810523e6>] kthread+0x96/0xa0
  3369. [ 871.710655] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3370. [ 871.710658] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3371. [ 871.710661] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3372. [ 871.710663] ---[ end trace d1535c397c774113 ]---
  3373. [ 871.715480] ------------[ cut here ]------------
  3374. [ 871.715491] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3375. [ 871.715493] Hardware name: X8ST3
  3376. [ 871.715494] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3377. [ 871.715512] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3378. [ 871.715514] Call Trace:
  3379. [ 871.715518] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3380. [ 871.715522] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3381. [ 871.715529] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3382. [ 871.715540] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3383. [ 871.715548] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3384. [ 871.715555] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3385. [ 871.715562] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3386. [ 871.715566] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3387. [ 871.715574] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3388. [ 871.715585] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3389. [ 871.715595] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3390. [ 871.715599] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3391. [ 871.715610] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3392. [ 871.715620] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3393. [ 871.715624] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3394. [ 871.715627] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3395. [ 871.715637] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3396. [ 871.715646] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3397. [ 871.715655] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3398. [ 871.715665] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3399. [ 871.715668] [<ffffffff810523e6>] kthread+0x96/0xa0
  3400. [ 871.715671] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3401. [ 871.715674] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3402. [ 871.715677] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3403. [ 871.715679] ---[ end trace d1535c397c774114 ]---
  3404. [ 871.720428] ------------[ cut here ]------------
  3405. [ 871.720442] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3406. [ 871.720445] Hardware name: X8ST3
  3407. [ 871.720446] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3408. [ 871.720463] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3409. [ 871.720465] Call Trace:
  3410. [ 871.720470] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3411. [ 871.720473] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3412. [ 871.720481] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3413. [ 871.720492] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3414. [ 871.720499] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3415. [ 871.720506] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3416. [ 871.720514] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3417. [ 871.720517] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3418. [ 871.720526] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3419. [ 871.720537] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3420. [ 871.720547] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3421. [ 871.720551] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3422. [ 871.720561] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3423. [ 871.720572] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3424. [ 871.720576] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3425. [ 871.720579] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3426. [ 871.720588] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3427. [ 871.720598] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3428. [ 871.720607] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3429. [ 871.720617] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3430. [ 871.720620] [<ffffffff810523e6>] kthread+0x96/0xa0
  3431. [ 871.720623] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3432. [ 871.720626] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3433. [ 871.720629] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3434. [ 871.720631] ---[ end trace d1535c397c774115 ]---
  3435. [ 871.725491] ------------[ cut here ]------------
  3436. [ 871.725501] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3437. [ 871.725504] Hardware name: X8ST3
  3438. [ 871.725505] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3439. [ 871.725522] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3440. [ 871.725524] Call Trace:
  3441. [ 871.725529] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3442. [ 871.725532] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3443. [ 871.725540] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3444. [ 871.725551] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3445. [ 871.725559] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3446. [ 871.725565] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3447. [ 871.725573] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3448. [ 871.725576] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3449. [ 871.725585] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3450. [ 871.725596] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3451. [ 871.725606] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3452. [ 871.725610] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3453. [ 871.725620] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3454. [ 871.725631] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3455. [ 871.725635] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3456. [ 871.725638] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3457. [ 871.725647] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3458. [ 871.725657] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3459. [ 871.725666] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3460. [ 871.725676] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3461. [ 871.725679] [<ffffffff810523e6>] kthread+0x96/0xa0
  3462. [ 871.725682] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3463. [ 871.725685] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3464. [ 871.725688] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3465. [ 871.725690] ---[ end trace d1535c397c774116 ]---
  3466. [ 871.730461] ------------[ cut here ]------------
  3467. [ 871.730472] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3468. [ 871.730474] Hardware name: X8ST3
  3469. [ 871.730475] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3470. [ 871.730493] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3471. [ 871.730495] Call Trace:
  3472. [ 871.730499] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3473. [ 871.730503] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3474. [ 871.730511] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3475. [ 871.730521] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3476. [ 871.730529] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3477. [ 871.730536] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3478. [ 871.730543] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3479. [ 871.730547] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3480. [ 871.730556] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3481. [ 871.730566] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3482. [ 871.730576] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3483. [ 871.730580] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3484. [ 871.730591] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3485. [ 871.730601] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3486. [ 871.730605] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3487. [ 871.730608] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3488. [ 871.730617] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3489. [ 871.730627] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3490. [ 871.730636] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3491. [ 871.730645] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3492. [ 871.730649] [<ffffffff810523e6>] kthread+0x96/0xa0
  3493. [ 871.730652] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3494. [ 871.730655] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3495. [ 871.730658] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3496. [ 871.730660] ---[ end trace d1535c397c774117 ]---
  3497. [ 871.735446] ------------[ cut here ]------------
  3498. [ 871.735464] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3499. [ 871.735467] Hardware name: X8ST3
  3500. [ 871.735469] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3501. [ 871.735499] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3502. [ 871.735503] Call Trace:
  3503. [ 871.735511] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3504. [ 871.735516] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3505. [ 871.735530] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3506. [ 871.735548] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3507. [ 871.735560] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3508. [ 871.735572] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3509. [ 871.735584] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3510. [ 871.735590] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3511. [ 871.735605] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3512. [ 871.735622] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3513. [ 871.735640] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3514. [ 871.735646] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3515. [ 871.735664] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3516. [ 871.735681] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3517. [ 871.735687] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3518. [ 871.735702] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3519. [ 871.735718] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3520. [ 871.735734] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3521. [ 871.735749] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3522. [ 871.735754] [<ffffffff810523e6>] kthread+0x96/0xa0
  3523. [ 871.735760] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3524. [ 871.735765] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3525. [ 871.735770] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3526. [ 871.735773] ---[ end trace d1535c397c774118 ]---
  3527. [ 871.740241] ------------[ cut here ]------------
  3528. [ 871.740252] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3529. [ 871.740254] Hardware name: X8ST3
  3530. [ 871.740256] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3531. [ 871.740273] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3532. [ 871.740275] Call Trace:
  3533. [ 871.740280] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3534. [ 871.740283] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3535. [ 871.740291] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3536. [ 871.740302] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3537. [ 871.740310] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3538. [ 871.740317] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3539. [ 871.740324] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3540. [ 871.740328] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3541. [ 871.740336] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3542. [ 871.740347] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3543. [ 871.740357] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3544. [ 871.740361] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3545. [ 871.740372] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3546. [ 871.740382] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3547. [ 871.740386] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3548. [ 871.740389] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3549. [ 871.740399] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3550. [ 871.740408] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3551. [ 871.740417] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3552. [ 871.740427] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3553. [ 871.740430] [<ffffffff810523e6>] kthread+0x96/0xa0
  3554. [ 871.740433] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3555. [ 871.740436] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3556. [ 871.740439] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3557. [ 871.740441] ---[ end trace d1535c397c774119 ]---
  3558. [ 871.745009] ------------[ cut here ]------------
  3559. [ 871.745027] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3560. [ 871.745030] Hardware name: X8ST3
  3561. [ 871.745031] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3562. [ 871.745048] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3563. [ 871.745050] Call Trace:
  3564. [ 871.745055] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3565. [ 871.745058] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3566. [ 871.745066] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3567. [ 871.745077] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3568. [ 871.745084] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3569. [ 871.745091] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3570. [ 871.745098] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3571. [ 871.745102] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3572. [ 871.745111] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3573. [ 871.745122] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3574. [ 871.745132] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3575. [ 871.745136] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3576. [ 871.745147] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3577. [ 871.745157] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3578. [ 871.745161] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3579. [ 871.745164] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3580. [ 871.745173] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3581. [ 871.745183] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3582. [ 871.745192] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3583. [ 871.745202] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3584. [ 871.745205] [<ffffffff810523e6>] kthread+0x96/0xa0
  3585. [ 871.745208] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3586. [ 871.745211] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3587. [ 871.745214] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3588. [ 871.745216] ---[ end trace d1535c397c77411a ]---
  3589. [ 871.750235] ------------[ cut here ]------------
  3590. [ 871.750250] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3591. [ 871.750252] Hardware name: X8ST3
  3592. [ 871.750254] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3593. [ 871.750271] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3594. [ 871.750273] Call Trace:
  3595. [ 871.750278] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3596. [ 871.750281] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3597. [ 871.750289] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3598. [ 871.750300] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3599. [ 871.750307] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3600. [ 871.750314] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3601. [ 871.750321] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3602. [ 871.750325] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3603. [ 871.750334] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3604. [ 871.750344] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3605. [ 871.750355] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3606. [ 871.750359] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3607. [ 871.750369] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3608. [ 871.750379] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3609. [ 871.750383] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3610. [ 871.750386] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3611. [ 871.750396] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3612. [ 871.750405] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3613. [ 871.750415] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3614. [ 871.750424] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3615. [ 871.750427] [<ffffffff810523e6>] kthread+0x96/0xa0
  3616. [ 871.750430] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3617. [ 871.750433] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3618. [ 871.750436] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3619. [ 871.750438] ---[ end trace d1535c397c77411b ]---
  3620. [ 871.754560] ------------[ cut here ]------------
  3621. [ 871.754570] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3622. [ 871.754572] Hardware name: X8ST3
  3623. [ 871.754574] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3624. [ 871.754591] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3625. [ 871.754593] Call Trace:
  3626. [ 871.754597] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3627. [ 871.754601] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3628. [ 871.754609] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3629. [ 871.754620] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3630. [ 871.754627] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3631. [ 871.754634] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3632. [ 871.754641] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3633. [ 871.754645] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3634. [ 871.754654] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3635. [ 871.754665] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3636. [ 871.754675] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3637. [ 871.754679] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3638. [ 871.754689] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3639. [ 871.754700] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3640. [ 871.754704] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3641. [ 871.754707] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3642. [ 871.754716] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3643. [ 871.754726] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3644. [ 871.754735] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3645. [ 871.754745] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3646. [ 871.754748] [<ffffffff810523e6>] kthread+0x96/0xa0
  3647. [ 871.754751] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3648. [ 871.754754] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3649. [ 871.754757] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3650. [ 871.754759] ---[ end trace d1535c397c77411c ]---
  3651. [ 871.759283] ------------[ cut here ]------------
  3652. [ 871.759293] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3653. [ 871.759296] Hardware name: X8ST3
  3654. [ 871.759297] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3655. [ 871.759314] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3656. [ 871.759316] Call Trace:
  3657. [ 871.759321] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3658. [ 871.759324] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3659. [ 871.759332] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3660. [ 871.759343] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3661. [ 871.759350] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3662. [ 871.759357] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3663. [ 871.759364] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3664. [ 871.759368] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3665. [ 871.759377] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3666. [ 871.759388] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3667. [ 871.759398] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3668. [ 871.759402] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3669. [ 871.759412] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3670. [ 871.759423] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3671. [ 871.759427] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3672. [ 871.759430] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3673. [ 871.759439] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3674. [ 871.759449] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3675. [ 871.759458] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3676. [ 871.759467] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3677. [ 871.759471] [<ffffffff810523e6>] kthread+0x96/0xa0
  3678. [ 871.759474] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3679. [ 871.759477] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3680. [ 871.759480] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3681. [ 871.759482] ---[ end trace d1535c397c77411d ]---
  3682. [ 871.763910] ------------[ cut here ]------------
  3683. [ 871.763920] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3684. [ 871.763923] Hardware name: X8ST3
  3685. [ 871.763924] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3686. [ 871.763941] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3687. [ 871.763943] Call Trace:
  3688. [ 871.763948] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3689. [ 871.763951] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3690. [ 871.763959] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3691. [ 871.763970] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3692. [ 871.763977] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3693. [ 871.763984] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3694. [ 871.763991] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3695. [ 871.763995] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3696. [ 871.764004] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3697. [ 871.764015] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3698. [ 871.764025] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3699. [ 871.764029] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3700. [ 871.764039] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3701. [ 871.764049] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3702. [ 871.764053] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3703. [ 871.764057] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3704. [ 871.764066] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3705. [ 871.764075] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3706. [ 871.764085] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3707. [ 871.764094] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3708. [ 871.764097] [<ffffffff810523e6>] kthread+0x96/0xa0
  3709. [ 871.764100] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3710. [ 871.764103] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3711. [ 871.764106] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3712. [ 871.764108] ---[ end trace d1535c397c77411e ]---
  3713. [ 871.769401] ------------[ cut here ]------------
  3714. [ 871.769418] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3715. [ 871.769422] Hardware name: X8ST3
  3716. [ 871.769423] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3717. [ 871.769452] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3718. [ 871.769456] Call Trace:
  3719. [ 871.769463] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3720. [ 871.769469] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3721. [ 871.769482] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3722. [ 871.769500] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3723. [ 871.769512] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3724. [ 871.769524] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3725. [ 871.769536] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3726. [ 871.769542] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3727. [ 871.769557] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3728. [ 871.769574] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3729. [ 871.769591] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3730. [ 871.769598] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3731. [ 871.769615] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3732. [ 871.769632] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3733. [ 871.769638] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3734. [ 871.769644] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3735. [ 871.769659] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3736. [ 871.769675] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3737. [ 871.769690] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3738. [ 871.769706] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3739. [ 871.769711] [<ffffffff810523e6>] kthread+0x96/0xa0
  3740. [ 871.769716] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3741. [ 871.769722] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3742. [ 871.769726] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3743. [ 871.769729] ---[ end trace d1535c397c77411f ]---
  3744. [ 871.775296] ------------[ cut here ]------------
  3745. [ 871.775311] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3746. [ 871.775313] Hardware name: X8ST3
  3747. [ 871.775314] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3748. [ 871.775331] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3749. [ 871.775333] Call Trace:
  3750. [ 871.775337] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3751. [ 871.775340] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3752. [ 871.775348] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3753. [ 871.775358] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3754. [ 871.775365] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3755. [ 871.775371] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3756. [ 871.775378] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3757. [ 871.775382] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3758. [ 871.775390] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3759. [ 871.775400] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3760. [ 871.775410] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3761. [ 871.775413] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3762. [ 871.775423] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3763. [ 871.775433] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3764. [ 871.775437] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3765. [ 871.775440] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3766. [ 871.775448] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3767. [ 871.775457] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3768. [ 871.775466] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3769. [ 871.775475] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3770. [ 871.775478] [<ffffffff810523e6>] kthread+0x96/0xa0
  3771. [ 871.775481] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3772. [ 871.775484] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3773. [ 871.775486] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3774. [ 871.775488] ---[ end trace d1535c397c774120 ]---
  3775. [ 871.779386] ------------[ cut here ]------------
  3776. [ 871.779396] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3777. [ 871.779398] Hardware name: X8ST3
  3778. [ 871.779399] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3779. [ 871.779415] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3780. [ 871.779417] Call Trace:
  3781. [ 871.779421] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3782. [ 871.779425] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3783. [ 871.779432] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3784. [ 871.779442] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3785. [ 871.779449] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3786. [ 871.779456] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3787. [ 871.779463] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3788. [ 871.779466] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3789. [ 871.779475] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3790. [ 871.779484] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3791. [ 871.779494] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3792. [ 871.779498] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3793. [ 871.779508] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3794. [ 871.779517] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3795. [ 871.779521] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3796. [ 871.779524] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3797. [ 871.779533] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3798. [ 871.779541] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3799. [ 871.779550] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3800. [ 871.779559] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3801. [ 871.779562] [<ffffffff810523e6>] kthread+0x96/0xa0
  3802. [ 871.779565] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3803. [ 871.779568] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3804. [ 871.779571] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3805. [ 871.779572] ---[ end trace d1535c397c774121 ]---
  3806. [ 871.783285] ------------[ cut here ]------------
  3807. [ 871.783296] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3808. [ 871.783298] Hardware name: X8ST3
  3809. [ 871.783299] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3810. [ 871.783315] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3811. [ 871.783317] Call Trace:
  3812. [ 871.783321] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3813. [ 871.783325] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3814. [ 871.783332] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3815. [ 871.783342] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3816. [ 871.783349] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3817. [ 871.783356] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3818. [ 871.783362] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3819. [ 871.783366] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3820. [ 871.783374] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3821. [ 871.783384] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3822. [ 871.783394] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3823. [ 871.783398] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3824. [ 871.783407] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3825. [ 871.783417] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3826. [ 871.783421] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3827. [ 871.783424] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3828. [ 871.783433] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3829. [ 871.783441] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3830. [ 871.783450] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3831. [ 871.783459] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3832. [ 871.783462] [<ffffffff810523e6>] kthread+0x96/0xa0
  3833. [ 871.783465] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3834. [ 871.783468] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3835. [ 871.783471] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3836. [ 871.783473] ---[ end trace d1535c397c774122 ]---
  3837. [ 871.787229] ------------[ cut here ]------------
  3838. [ 871.787239] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3839. [ 871.787241] Hardware name: X8ST3
  3840. [ 871.787242] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3841. [ 871.787259] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3842. [ 871.787261] Call Trace:
  3843. [ 871.787265] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3844. [ 871.787268] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3845. [ 871.787276] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3846. [ 871.787286] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3847. [ 871.787293] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3848. [ 871.787299] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3849. [ 871.787306] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3850. [ 871.787309] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3851. [ 871.787317] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3852. [ 871.787327] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3853. [ 871.787337] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3854. [ 871.787340] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3855. [ 871.787350] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3856. [ 871.787360] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3857. [ 871.787363] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3858. [ 871.787366] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3859. [ 871.787375] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3860. [ 871.787384] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3861. [ 871.787392] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3862. [ 871.787401] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3863. [ 871.787404] [<ffffffff810523e6>] kthread+0x96/0xa0
  3864. [ 871.787407] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3865. [ 871.787410] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3866. [ 871.787412] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3867. [ 871.787414] ---[ end trace d1535c397c774123 ]---
  3868. [ 871.791226] ------------[ cut here ]------------
  3869. [ 871.791236] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3870. [ 871.791239] Hardware name: X8ST3
  3871. [ 871.791240] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3872. [ 871.791256] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3873. [ 871.791258] Call Trace:
  3874. [ 871.791262] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3875. [ 871.791266] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3876. [ 871.791273] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3877. [ 871.791283] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3878. [ 871.791290] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3879. [ 871.791297] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3880. [ 871.791303] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3881. [ 871.791307] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3882. [ 871.791315] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3883. [ 871.791325] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3884. [ 871.791335] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3885. [ 871.791339] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3886. [ 871.791348] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3887. [ 871.791358] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3888. [ 871.791362] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3889. [ 871.791365] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3890. [ 871.791374] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3891. [ 871.791382] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3892. [ 871.791391] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3893. [ 871.791400] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3894. [ 871.791403] [<ffffffff810523e6>] kthread+0x96/0xa0
  3895. [ 871.791406] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3896. [ 871.791409] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3897. [ 871.791412] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3898. [ 871.791414] ---[ end trace d1535c397c774124 ]---
  3899. [ 871.795278] ------------[ cut here ]------------
  3900. [ 871.795288] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3901. [ 871.795290] Hardware name: X8ST3
  3902. [ 871.795291] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3903. [ 871.795308] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3904. [ 871.795310] Call Trace:
  3905. [ 871.795314] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3906. [ 871.795317] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3907. [ 871.795324] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3908. [ 871.795334] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3909. [ 871.795341] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3910. [ 871.795348] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3911. [ 871.795354] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3912. [ 871.795358] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3913. [ 871.795366] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3914. [ 871.795376] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3915. [ 871.795385] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3916. [ 871.795389] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3917. [ 871.795399] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3918. [ 871.795408] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3919. [ 871.795412] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3920. [ 871.795415] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3921. [ 871.795424] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3922. [ 871.795432] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3923. [ 871.795441] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3924. [ 871.795450] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3925. [ 871.795453] [<ffffffff810523e6>] kthread+0x96/0xa0
  3926. [ 871.795456] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3927. [ 871.795459] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3928. [ 871.795461] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3929. [ 871.795463] ---[ end trace d1535c397c774125 ]---
  3930. [ 871.800187] ------------[ cut here ]------------
  3931. [ 871.800197] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3932. [ 871.800199] Hardware name: X8ST3
  3933. [ 871.800200] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3934. [ 871.800217] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3935. [ 871.800219] Call Trace:
  3936. [ 871.800223] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3937. [ 871.800226] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3938. [ 871.800234] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3939. [ 871.800244] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3940. [ 871.800251] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3941. [ 871.800257] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3942. [ 871.800264] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3943. [ 871.800268] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3944. [ 871.800276] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3945. [ 871.800286] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3946. [ 871.800295] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3947. [ 871.800299] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3948. [ 871.800309] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3949. [ 871.800318] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3950. [ 871.800322] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3951. [ 871.800325] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3952. [ 871.800334] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3953. [ 871.800343] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3954. [ 871.800352] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3955. [ 871.800360] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3956. [ 871.800363] [<ffffffff810523e6>] kthread+0x96/0xa0
  3957. [ 871.800367] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3958. [ 871.800369] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3959. [ 871.800372] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3960. [ 871.800374] ---[ end trace d1535c397c774126 ]---
  3961. [ 871.805325] ------------[ cut here ]------------
  3962. [ 871.805341] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3963. [ 871.805343] Hardware name: X8ST3
  3964. [ 871.805344] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3965. [ 871.805360] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3966. [ 871.805362] Call Trace:
  3967. [ 871.805366] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3968. [ 871.805369] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  3969. [ 871.805377] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  3970. [ 871.805387] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  3971. [ 871.805394] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  3972. [ 871.805400] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  3973. [ 871.805407] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  3974. [ 871.805411] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  3975. [ 871.805419] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  3976. [ 871.805428] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  3977. [ 871.805438] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  3978. [ 871.805442] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  3979. [ 871.805451] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  3980. [ 871.805461] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  3981. [ 871.805465] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  3982. [ 871.805468] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  3983. [ 871.805476] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  3984. [ 871.805485] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  3985. [ 871.805494] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3986. [ 871.805503] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  3987. [ 871.805505] [<ffffffff810523e6>] kthread+0x96/0xa0
  3988. [ 871.805508] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  3989. [ 871.805511] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  3990. [ 871.805514] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  3991. [ 871.805516] ---[ end trace d1535c397c774127 ]---
  3992. [ 871.810129] ------------[ cut here ]------------
  3993. [ 871.810139] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  3994. [ 871.810141] Hardware name: X8ST3
  3995. [ 871.810142] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  3996. [ 871.810158] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  3997. [ 871.810160] Call Trace:
  3998. [ 871.810164] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  3999. [ 871.810167] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4000. [ 871.810175] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4001. [ 871.810185] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4002. [ 871.810192] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4003. [ 871.810198] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4004. [ 871.810205] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4005. [ 871.810208] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4006. [ 871.810217] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4007. [ 871.810226] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4008. [ 871.810236] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4009. [ 871.810240] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4010. [ 871.810249] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4011. [ 871.810259] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4012. [ 871.810263] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4013. [ 871.810266] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4014. [ 871.810274] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4015. [ 871.810283] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4016. [ 871.810292] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4017. [ 871.810301] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4018. [ 871.810303] [<ffffffff810523e6>] kthread+0x96/0xa0
  4019. [ 871.810306] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4020. [ 871.810309] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4021. [ 871.810312] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4022. [ 871.810313] ---[ end trace d1535c397c774128 ]---
  4023. [ 871.814475] ------------[ cut here ]------------
  4024. [ 871.814485] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4025. [ 871.814487] Hardware name: X8ST3
  4026. [ 871.814489] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4027. [ 871.814505] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4028. [ 871.814507] Call Trace:
  4029. [ 871.814511] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4030. [ 871.814514] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4031. [ 871.814522] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4032. [ 871.814532] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4033. [ 871.814539] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4034. [ 871.814545] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4035. [ 871.814552] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4036. [ 871.814556] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4037. [ 871.814564] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4038. [ 871.814574] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4039. [ 871.814583] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4040. [ 871.814587] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4041. [ 871.814597] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4042. [ 871.814606] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4043. [ 871.814610] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4044. [ 871.814613] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4045. [ 871.814622] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4046. [ 871.814631] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4047. [ 871.814639] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4048. [ 871.814648] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4049. [ 871.814651] [<ffffffff810523e6>] kthread+0x96/0xa0
  4050. [ 871.814654] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4051. [ 871.814657] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4052. [ 871.814660] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4053. [ 871.814661] ---[ end trace d1535c397c774129 ]---
  4054. [ 871.819246] ------------[ cut here ]------------
  4055. [ 871.819262] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4056. [ 871.819264] Hardware name: X8ST3
  4057. [ 871.819265] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4058. [ 871.819281] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4059. [ 871.819283] Call Trace:
  4060. [ 871.819288] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4061. [ 871.819291] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4062. [ 871.819298] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4063. [ 871.819308] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4064. [ 871.819316] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4065. [ 871.819322] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4066. [ 871.819329] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4067. [ 871.819332] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4068. [ 871.819341] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4069. [ 871.819350] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4070. [ 871.819360] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4071. [ 871.819364] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4072. [ 871.819374] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4073. [ 871.819383] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4074. [ 871.819387] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4075. [ 871.819390] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4076. [ 871.819399] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4077. [ 871.819408] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4078. [ 871.819417] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4079. [ 871.819426] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4080. [ 871.819428] [<ffffffff810523e6>] kthread+0x96/0xa0
  4081. [ 871.819432] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4082. [ 871.819434] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4083. [ 871.819437] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4084. [ 871.819439] ---[ end trace d1535c397c77412a ]---
  4085. [ 871.823809] ------------[ cut here ]------------
  4086. [ 871.823819] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4087. [ 871.823821] Hardware name: X8ST3
  4088. [ 871.823822] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4089. [ 871.823839] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4090. [ 871.823841] Call Trace:
  4091. [ 871.823845] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4092. [ 871.823848] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4093. [ 871.823855] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4094. [ 871.823865] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4095. [ 871.823872] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4096. [ 871.823928] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4097. [ 871.823937] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4098. [ 871.823942] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4099. [ 871.823952] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4100. [ 871.823963] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4101. [ 871.823975] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4102. [ 871.823980] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4103. [ 871.823991] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4104. [ 871.824002] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4105. [ 871.824008] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4106. [ 871.824012] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4107. [ 871.824022] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4108. [ 871.824033] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4109. [ 871.824043] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4110. [ 871.824053] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4111. [ 871.824058] [<ffffffff810523e6>] kthread+0x96/0xa0
  4112. [ 871.824063] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4113. [ 871.824067] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4114. [ 871.824071] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4115. [ 871.824074] ---[ end trace d1535c397c77412b ]---
  4116. [ 871.828464] ------------[ cut here ]------------
  4117. [ 871.828474] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4118. [ 871.828476] Hardware name: X8ST3
  4119. [ 871.828477] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4120. [ 871.828494] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4121. [ 871.828495] Call Trace:
  4122. [ 871.828500] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4123. [ 871.828503] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4124. [ 871.828510] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4125. [ 871.828520] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4126. [ 871.828527] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4127. [ 871.828534] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4128. [ 871.828540] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4129. [ 871.828544] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4130. [ 871.828552] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4131. [ 871.828562] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4132. [ 871.828571] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4133. [ 871.828575] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4134. [ 871.828585] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4135. [ 871.828594] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4136. [ 871.828598] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4137. [ 871.828601] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4138. [ 871.828610] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4139. [ 871.828618] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4140. [ 871.828627] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4141. [ 871.828636] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4142. [ 871.828639] [<ffffffff810523e6>] kthread+0x96/0xa0
  4143. [ 871.828642] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4144. [ 871.828644] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4145. [ 871.828647] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4146. [ 871.828649] ---[ end trace d1535c397c77412c ]---
  4147. [ 871.833346] ------------[ cut here ]------------
  4148. [ 871.833356] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4149. [ 871.833358] Hardware name: X8ST3
  4150. [ 871.833359] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4151. [ 871.833375] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4152. [ 871.833377] Call Trace:
  4153. [ 871.833381] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4154. [ 871.833385] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4155. [ 871.833392] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4156. [ 871.833402] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4157. [ 871.833409] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4158. [ 871.833416] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4159. [ 871.833422] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4160. [ 871.833426] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4161. [ 871.833434] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4162. [ 871.833444] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4163. [ 871.833454] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4164. [ 871.833457] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4165. [ 871.833467] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4166. [ 871.833477] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4167. [ 871.833480] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4168. [ 871.833483] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4169. [ 871.833492] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4170. [ 871.833501] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4171. [ 871.833510] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4172. [ 871.833519] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4173. [ 871.833522] [<ffffffff810523e6>] kthread+0x96/0xa0
  4174. [ 871.833525] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4175. [ 871.833528] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4176. [ 871.833530] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4177. [ 871.833532] ---[ end trace d1535c397c77412d ]---
  4178. [ 871.837975] ------------[ cut here ]------------
  4179. [ 871.837986] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4180. [ 871.837988] Hardware name: X8ST3
  4181. [ 871.837989] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4182. [ 871.838005] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4183. [ 871.838007] Call Trace:
  4184. [ 871.838012] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4185. [ 871.838015] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4186. [ 871.838023] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4187. [ 871.838032] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4188. [ 871.838040] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4189. [ 871.838046] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4190. [ 871.838053] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4191. [ 871.838056] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4192. [ 871.838065] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4193. [ 871.838074] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4194. [ 871.838084] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4195. [ 871.838088] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4196. [ 871.838097] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4197. [ 871.838107] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4198. [ 871.838111] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4199. [ 871.838114] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4200. [ 871.838123] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4201. [ 871.838131] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4202. [ 871.838140] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4203. [ 871.838149] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4204. [ 871.838152] [<ffffffff810523e6>] kthread+0x96/0xa0
  4205. [ 871.838155] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4206. [ 871.838158] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4207. [ 871.838161] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4208. [ 871.838162] ---[ end trace d1535c397c77412e ]---
  4209. [ 871.842273] ------------[ cut here ]------------
  4210. [ 871.842283] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4211. [ 871.842285] Hardware name: X8ST3
  4212. [ 871.842286] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4213. [ 871.842303] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4214. [ 871.842305] Call Trace:
  4215. [ 871.842309] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4216. [ 871.842312] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4217. [ 871.842320] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4218. [ 871.842330] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4219. [ 871.842337] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4220. [ 871.842344] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4221. [ 871.842350] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4222. [ 871.842354] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4223. [ 871.842362] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4224. [ 871.842372] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4225. [ 871.842382] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4226. [ 871.842385] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4227. [ 871.842395] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4228. [ 871.842405] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4229. [ 871.842408] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4230. [ 871.842411] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4231. [ 871.842420] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4232. [ 871.842429] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4233. [ 871.842438] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4234. [ 871.842447] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4235. [ 871.842450] [<ffffffff810523e6>] kthread+0x96/0xa0
  4236. [ 871.842453] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4237. [ 871.842456] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4238. [ 871.842458] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4239. [ 871.842460] ---[ end trace d1535c397c77412f ]---
  4240. [ 871.846883] ------------[ cut here ]------------
  4241. [ 871.846893] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4242. [ 871.846895] Hardware name: X8ST3
  4243. [ 871.846897] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4244. [ 871.846913] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4245. [ 871.846915] Call Trace:
  4246. [ 871.846919] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4247. [ 871.846922] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4248. [ 871.846930] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4249. [ 871.846940] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4250. [ 871.846947] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4251. [ 871.846953] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4252. [ 871.846960] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4253. [ 871.846964] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4254. [ 871.846972] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4255. [ 871.846982] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4256. [ 871.846991] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4257. [ 871.846995] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4258. [ 871.847005] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4259. [ 871.847015] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4260. [ 871.847018] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4261. [ 871.847021] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4262. [ 871.847030] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4263. [ 871.847039] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4264. [ 871.847048] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4265. [ 871.847057] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4266. [ 871.847059] [<ffffffff810523e6>] kthread+0x96/0xa0
  4267. [ 871.847062] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4268. [ 871.847065] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4269. [ 871.847068] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4270. [ 871.847070] ---[ end trace d1535c397c774130 ]---
  4271. [ 871.851066] ------------[ cut here ]------------
  4272. [ 871.851077] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4273. [ 871.851079] Hardware name: X8ST3
  4274. [ 871.851080] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4275. [ 871.851096] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4276. [ 871.851098] Call Trace:
  4277. [ 871.851102] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4278. [ 871.851106] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4279. [ 871.851113] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4280. [ 871.851123] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4281. [ 871.851130] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4282. [ 871.851137] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4283. [ 871.851144] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4284. [ 871.851147] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4285. [ 871.851156] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4286. [ 871.851165] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4287. [ 871.851175] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4288. [ 871.851179] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4289. [ 871.851188] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4290. [ 871.851198] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4291. [ 871.851202] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4292. [ 871.851205] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4293. [ 871.851214] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4294. [ 871.851222] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4295. [ 871.851231] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4296. [ 871.851240] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4297. [ 871.851243] [<ffffffff810523e6>] kthread+0x96/0xa0
  4298. [ 871.851246] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4299. [ 871.851249] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4300. [ 871.851252] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4301. [ 871.851254] ---[ end trace d1535c397c774131 ]---
  4302. [ 871.855355] ------------[ cut here ]------------
  4303. [ 871.855365] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4304. [ 871.855367] Hardware name: X8ST3
  4305. [ 871.855368] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4306. [ 871.855385] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4307. [ 871.855387] Call Trace:
  4308. [ 871.855391] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4309. [ 871.855394] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4310. [ 871.855402] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4311. [ 871.855412] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4312. [ 871.855419] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4313. [ 871.855425] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4314. [ 871.855432] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4315. [ 871.855436] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4316. [ 871.855444] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4317. [ 871.855454] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4318. [ 871.855463] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4319. [ 871.855467] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4320. [ 871.855477] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4321. [ 871.855486] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4322. [ 871.855490] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4323. [ 871.855493] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4324. [ 871.855502] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4325. [ 871.855511] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4326. [ 871.855520] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4327. [ 871.855529] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4328. [ 871.855531] [<ffffffff810523e6>] kthread+0x96/0xa0
  4329. [ 871.855534] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4330. [ 871.855537] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4331. [ 871.855540] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4332. [ 871.855542] ---[ end trace d1535c397c774132 ]---
  4333. [ 871.860279] ------------[ cut here ]------------
  4334. [ 871.860289] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4335. [ 871.860291] Hardware name: X8ST3
  4336. [ 871.860292] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4337. [ 871.860309] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4338. [ 871.860311] Call Trace:
  4339. [ 871.860315] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4340. [ 871.860318] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4341. [ 871.860326] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4342. [ 871.860335] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4343. [ 871.860343] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4344. [ 871.860349] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4345. [ 871.860356] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4346. [ 871.860359] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4347. [ 871.860367] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4348. [ 871.860377] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4349. [ 871.860387] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4350. [ 871.860390] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4351. [ 871.860400] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4352. [ 871.860410] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4353. [ 871.860413] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4354. [ 871.860416] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4355. [ 871.860425] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4356. [ 871.860434] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4357. [ 871.860442] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4358. [ 871.860451] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4359. [ 871.860454] [<ffffffff810523e6>] kthread+0x96/0xa0
  4360. [ 871.860457] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4361. [ 871.860460] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4362. [ 871.860462] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4363. [ 871.860464] ---[ end trace d1535c397c774133 ]---
  4364. [ 871.864427] ------------[ cut here ]------------
  4365. [ 871.864438] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4366. [ 871.864440] Hardware name: X8ST3
  4367. [ 871.864442] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4368. [ 871.864459] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4369. [ 871.864461] Call Trace:
  4370. [ 871.864465] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4371. [ 871.864469] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4372. [ 871.864477] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4373. [ 871.864487] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4374. [ 871.864495] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4375. [ 871.864502] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4376. [ 871.864509] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4377. [ 871.864513] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4378. [ 871.864521] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4379. [ 871.864532] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4380. [ 871.864542] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4381. [ 871.864546] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4382. [ 871.864556] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4383. [ 871.864566] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4384. [ 871.864570] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4385. [ 871.864573] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4386. [ 871.864583] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4387. [ 871.864592] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4388. [ 871.864601] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4389. [ 871.864611] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4390. [ 871.864614] [<ffffffff810523e6>] kthread+0x96/0xa0
  4391. [ 871.864617] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4392. [ 871.864620] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4393. [ 871.864622] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4394. [ 871.864624] ---[ end trace d1535c397c774134 ]---
  4395. [ 871.869273] ------------[ cut here ]------------
  4396. [ 871.869283] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4397. [ 871.869286] Hardware name: X8ST3
  4398. [ 871.869287] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4399. [ 871.869304] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4400. [ 871.869306] Call Trace:
  4401. [ 871.869311] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4402. [ 871.869314] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4403. [ 871.869322] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4404. [ 871.869333] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4405. [ 871.869340] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4406. [ 871.869347] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4407. [ 871.869354] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4408. [ 871.869358] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4409. [ 871.869367] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4410. [ 871.869378] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4411. [ 871.869388] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4412. [ 871.869392] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4413. [ 871.869403] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4414. [ 871.869413] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4415. [ 871.869417] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4416. [ 871.869420] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4417. [ 871.869429] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4418. [ 871.869439] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4419. [ 871.869448] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4420. [ 871.869458] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4421. [ 871.869461] [<ffffffff810523e6>] kthread+0x96/0xa0
  4422. [ 871.869464] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4423. [ 871.869467] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4424. [ 871.869470] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4425. [ 871.869472] ---[ end trace d1535c397c774135 ]---
  4426. [ 871.874183] ------------[ cut here ]------------
  4427. [ 871.874201] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4428. [ 871.874205] Hardware name: X8ST3
  4429. [ 871.874207] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4430. [ 871.874235] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4431. [ 871.874239] Call Trace:
  4432. [ 871.874245] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4433. [ 871.874251] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4434. [ 871.874265] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4435. [ 871.874282] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4436. [ 871.874295] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4437. [ 871.874307] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4438. [ 871.874318] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4439. [ 871.874325] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4440. [ 871.874339] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4441. [ 871.874357] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4442. [ 871.874374] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4443. [ 871.874380] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4444. [ 871.874398] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4445. [ 871.874415] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4446. [ 871.874421] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4447. [ 871.874427] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4448. [ 871.874442] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4449. [ 871.874458] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4450. [ 871.874474] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4451. [ 871.874489] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4452. [ 871.874494] [<ffffffff810523e6>] kthread+0x96/0xa0
  4453. [ 871.874500] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4454. [ 871.874505] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4455. [ 871.874509] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4456. [ 871.874513] ---[ end trace d1535c397c774136 ]---
  4457. [ 871.880338] ------------[ cut here ]------------
  4458. [ 871.880355] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4459. [ 871.880359] Hardware name: X8ST3
  4460. [ 871.880361] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4461. [ 871.880390] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4462. [ 871.880393] Call Trace:
  4463. [ 871.880400] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4464. [ 871.880406] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4465. [ 871.880419] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4466. [ 871.880436] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4467. [ 871.880449] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4468. [ 871.880460] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4469. [ 871.880472] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4470. [ 871.880478] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4471. [ 871.880493] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4472. [ 871.880510] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4473. [ 871.880527] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4474. [ 871.880533] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4475. [ 871.880551] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4476. [ 871.880568] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4477. [ 871.880574] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4478. [ 871.880579] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4479. [ 871.880595] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4480. [ 871.880610] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4481. [ 871.880626] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4482. [ 871.880641] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4483. [ 871.880646] [<ffffffff810523e6>] kthread+0x96/0xa0
  4484. [ 871.880651] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4485. [ 871.880656] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4486. [ 871.880661] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4487. [ 871.880664] ---[ end trace d1535c397c774137 ]---
  4488. [ 871.886351] ------------[ cut here ]------------
  4489. [ 871.886368] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4490. [ 871.886375] Hardware name: X8ST3
  4491. [ 871.886376] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4492. [ 871.886392] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4493. [ 871.886394] Call Trace:
  4494. [ 871.886398] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4495. [ 871.886401] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4496. [ 871.886409] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4497. [ 871.886418] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4498. [ 871.886426] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4499. [ 871.886432] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4500. [ 871.886439] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4501. [ 871.886442] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4502. [ 871.886450] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4503. [ 871.886460] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4504. [ 871.886470] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4505. [ 871.886473] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4506. [ 871.886483] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4507. [ 871.886492] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4508. [ 871.886496] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4509. [ 871.886499] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4510. [ 871.886508] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4511. [ 871.886517] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4512. [ 871.886525] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4513. [ 871.886534] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4514. [ 871.886537] [<ffffffff810523e6>] kthread+0x96/0xa0
  4515. [ 871.886540] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4516. [ 871.886543] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4517. [ 871.886545] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4518. [ 871.886547] ---[ end trace d1535c397c774138 ]---
  4519. [ 871.891335] ------------[ cut here ]------------
  4520. [ 871.891355] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4521. [ 871.891357] Hardware name: X8ST3
  4522. [ 871.891358] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4523. [ 871.891375] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4524. [ 871.891377] Call Trace:
  4525. [ 871.891381] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4526. [ 871.891384] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4527. [ 871.891391] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4528. [ 871.891401] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4529. [ 871.891408] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4530. [ 871.891415] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4531. [ 871.891422] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4532. [ 871.891425] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4533. [ 871.891434] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4534. [ 871.891443] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4535. [ 871.891453] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4536. [ 871.891457] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4537. [ 871.891467] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4538. [ 871.891476] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4539. [ 871.891480] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4540. [ 871.891483] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4541. [ 871.891492] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4542. [ 871.891501] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4543. [ 871.891510] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4544. [ 871.891519] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4545. [ 871.891521] [<ffffffff810523e6>] kthread+0x96/0xa0
  4546. [ 871.891525] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4547. [ 871.891528] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4548. [ 871.891530] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4549. [ 871.891532] ---[ end trace d1535c397c774139 ]---
  4550. [ 871.896306] ------------[ cut here ]------------
  4551. [ 871.896317] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4552. [ 871.896319] Hardware name: X8ST3
  4553. [ 871.896320] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4554. [ 871.896338] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4555. [ 871.896340] Call Trace:
  4556. [ 871.896344] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4557. [ 871.896348] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4558. [ 871.896356] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4559. [ 871.896366] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4560. [ 871.896374] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4561. [ 871.896381] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4562. [ 871.896388] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4563. [ 871.896392] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4564. [ 871.896401] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4565. [ 871.896411] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4566. [ 871.896422] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4567. [ 871.896425] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4568. [ 871.896436] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4569. [ 871.896446] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4570. [ 871.896450] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4571. [ 871.896453] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4572. [ 871.896463] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4573. [ 871.896472] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4574. [ 871.896481] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4575. [ 871.896491] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4576. [ 871.896494] [<ffffffff810523e6>] kthread+0x96/0xa0
  4577. [ 871.896497] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4578. [ 871.896500] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4579. [ 871.896503] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4580. [ 871.896505] ---[ end trace d1535c397c77413a ]---
  4581. [ 871.901431] ------------[ cut here ]------------
  4582. [ 871.901442] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4583. [ 871.901444] Hardware name: X8ST3
  4584. [ 871.901445] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4585. [ 871.901462] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4586. [ 871.901465] Call Trace:
  4587. [ 871.901469] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4588. [ 871.901472] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4589. [ 871.901480] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4590. [ 871.901491] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4591. [ 871.901499] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4592. [ 871.901506] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4593. [ 871.901513] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4594. [ 871.901517] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4595. [ 871.901525] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4596. [ 871.901536] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4597. [ 871.901546] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4598. [ 871.901550] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4599. [ 871.901561] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4600. [ 871.901571] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4601. [ 871.901575] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4602. [ 871.901578] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4603. [ 871.901588] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4604. [ 871.901597] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4605. [ 871.901606] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4606. [ 871.901616] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4607. [ 871.901619] [<ffffffff810523e6>] kthread+0x96/0xa0
  4608. [ 871.901622] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4609. [ 871.901625] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4610. [ 871.901628] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4611. [ 871.901630] ---[ end trace d1535c397c77413b ]---
  4612. [ 871.906216] ------------[ cut here ]------------
  4613. [ 871.906227] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4614. [ 871.906229] Hardware name: X8ST3
  4615. [ 871.906230] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4616. [ 871.906248] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4617. [ 871.906250] Call Trace:
  4618. [ 871.906254] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4619. [ 871.906258] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4620. [ 871.906266] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4621. [ 871.906276] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4622. [ 871.906284] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4623. [ 871.906291] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4624. [ 871.906298] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4625. [ 871.906302] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4626. [ 871.906311] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4627. [ 871.906321] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4628. [ 871.906331] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4629. [ 871.906335] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4630. [ 871.906346] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4631. [ 871.906356] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4632. [ 871.906360] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4633. [ 871.906363] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4634. [ 871.906373] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4635. [ 871.906382] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4636. [ 871.906391] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4637. [ 871.906401] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4638. [ 871.906404] [<ffffffff810523e6>] kthread+0x96/0xa0
  4639. [ 871.906407] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4640. [ 871.906410] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4641. [ 871.906413] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4642. [ 871.906415] ---[ end trace d1535c397c77413c ]---
  4643. [ 871.911250] ------------[ cut here ]------------
  4644. [ 871.911260] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4645. [ 871.911263] Hardware name: X8ST3
  4646. [ 871.911264] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4647. [ 871.911281] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4648. [ 871.911283] Call Trace:
  4649. [ 871.911288] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4650. [ 871.911291] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4651. [ 871.911299] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4652. [ 871.911310] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4653. [ 871.911317] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4654. [ 871.911324] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4655. [ 871.911331] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4656. [ 871.911335] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4657. [ 871.911344] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4658. [ 871.911354] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4659. [ 871.911365] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4660. [ 871.911369] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4661. [ 871.911379] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4662. [ 871.911389] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4663. [ 871.911393] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4664. [ 871.911397] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4665. [ 871.911406] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4666. [ 871.911415] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4667. [ 871.911425] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4668. [ 871.911434] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4669. [ 871.911437] [<ffffffff810523e6>] kthread+0x96/0xa0
  4670. [ 871.911441] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4671. [ 871.911444] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4672. [ 871.911446] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4673. [ 871.911448] ---[ end trace d1535c397c77413d ]---
  4674. [ 871.916170] ------------[ cut here ]------------
  4675. [ 871.916180] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4676. [ 871.916182] Hardware name: X8ST3
  4677. [ 871.916183] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4678. [ 871.916201] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4679. [ 871.916203] Call Trace:
  4680. [ 871.916207] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4681. [ 871.916211] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4682. [ 871.916218] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4683. [ 871.916229] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4684. [ 871.916237] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4685. [ 871.916244] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4686. [ 871.916251] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4687. [ 871.916255] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4688. [ 871.916263] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4689. [ 871.916274] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4690. [ 871.916284] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4691. [ 871.916288] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4692. [ 871.916299] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4693. [ 871.916309] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4694. [ 871.916313] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4695. [ 871.916316] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4696. [ 871.916326] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4697. [ 871.916335] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4698. [ 871.916344] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4699. [ 871.916354] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4700. [ 871.916357] [<ffffffff810523e6>] kthread+0x96/0xa0
  4701. [ 871.916360] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4702. [ 871.916363] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4703. [ 871.916366] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4704. [ 871.916368] ---[ end trace d1535c397c77413e ]---
  4705. [ 871.921272] ------------[ cut here ]------------
  4706. [ 871.921283] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4707. [ 871.921285] Hardware name: X8ST3
  4708. [ 871.921286] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4709. [ 871.921304] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4710. [ 871.921306] Call Trace:
  4711. [ 871.921310] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4712. [ 871.921313] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4713. [ 871.921321] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4714. [ 871.921332] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4715. [ 871.921339] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4716. [ 871.921346] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4717. [ 871.921353] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4718. [ 871.921357] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4719. [ 871.921366] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4720. [ 871.921376] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4721. [ 871.921386] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4722. [ 871.921390] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4723. [ 871.921401] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4724. [ 871.921411] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4725. [ 871.921415] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4726. [ 871.921418] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4727. [ 871.921427] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4728. [ 871.921436] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4729. [ 871.921446] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4730. [ 871.921455] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4731. [ 871.921458] [<ffffffff810523e6>] kthread+0x96/0xa0
  4732. [ 871.921461] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4733. [ 871.921464] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4734. [ 871.921467] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4735. [ 871.921469] ---[ end trace d1535c397c77413f ]---
  4736. [ 871.925582] ------------[ cut here ]------------
  4737. [ 871.925592] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4738. [ 871.925595] Hardware name: X8ST3
  4739. [ 871.925596] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4740. [ 871.925613] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4741. [ 871.925615] Call Trace:
  4742. [ 871.925620] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4743. [ 871.925623] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4744. [ 871.925631] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4745. [ 871.925642] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4746. [ 871.925649] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4747. [ 871.925656] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4748. [ 871.925663] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4749. [ 871.925667] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4750. [ 871.925676] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4751. [ 871.925686] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4752. [ 871.925697] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4753. [ 871.925701] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4754. [ 871.925711] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4755. [ 871.925721] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4756. [ 871.925725] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4757. [ 871.925728] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4758. [ 871.925738] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4759. [ 871.925747] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4760. [ 871.925756] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4761. [ 871.925766] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4762. [ 871.925769] [<ffffffff810523e6>] kthread+0x96/0xa0
  4763. [ 871.925772] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4764. [ 871.925775] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4765. [ 871.925778] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4766. [ 871.925780] ---[ end trace d1535c397c774140 ]---
  4767. [ 871.930559] ------------[ cut here ]------------
  4768. [ 871.930570] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4769. [ 871.930572] Hardware name: X8ST3
  4770. [ 871.930573] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4771. [ 871.930591] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4772. [ 871.930593] Call Trace:
  4773. [ 871.930597] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4774. [ 871.930601] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4775. [ 871.930609] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4776. [ 871.930619] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4777. [ 871.930627] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4778. [ 871.930634] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4779. [ 871.930641] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4780. [ 871.930644] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4781. [ 871.930653] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4782. [ 871.930664] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4783. [ 871.930674] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4784. [ 871.930678] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4785. [ 871.930688] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4786. [ 871.930698] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4787. [ 871.930702] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4788. [ 871.930705] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4789. [ 871.930715] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4790. [ 871.930724] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4791. [ 871.930733] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4792. [ 871.930743] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4793. [ 871.930746] [<ffffffff810523e6>] kthread+0x96/0xa0
  4794. [ 871.930749] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4795. [ 871.930752] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4796. [ 871.930755] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4797. [ 871.930757] ---[ end trace d1535c397c774141 ]---
  4798. [ 871.935638] ------------[ cut here ]------------
  4799. [ 871.935649] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4800. [ 871.935651] Hardware name: X8ST3
  4801. [ 871.935653] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4802. [ 871.935670] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4803. [ 871.935672] Call Trace:
  4804. [ 871.935676] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4805. [ 871.935680] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4806. [ 871.935688] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4807. [ 871.935699] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4808. [ 871.935706] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4809. [ 871.935713] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4810. [ 871.935720] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4811. [ 871.935724] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4812. [ 871.935733] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4813. [ 871.935743] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4814. [ 871.935754] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4815. [ 871.935758] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4816. [ 871.935768] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4817. [ 871.935778] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4818. [ 871.935782] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4819. [ 871.935786] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4820. [ 871.935795] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4821. [ 871.935804] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4822. [ 871.935814] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4823. [ 871.935823] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4824. [ 871.935826] [<ffffffff810523e6>] kthread+0x96/0xa0
  4825. [ 871.935830] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4826. [ 871.935833] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4827. [ 871.935836] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4828. [ 871.935838] ---[ end trace d1535c397c774142 ]---
  4829. [ 871.940043] ------------[ cut here ]------------
  4830. [ 871.940060] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4831. [ 871.940063] Hardware name: X8ST3
  4832. [ 871.940065] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4833. [ 871.940089] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4834. [ 871.940091] Call Trace:
  4835. [ 871.940095] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4836. [ 871.940098] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4837. [ 871.940106] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4838. [ 871.940117] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4839. [ 871.940125] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4840. [ 871.940132] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4841. [ 871.940139] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4842. [ 871.940143] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4843. [ 871.940151] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4844. [ 871.940162] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4845. [ 871.940172] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4846. [ 871.940176] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4847. [ 871.940187] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4848. [ 871.940197] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4849. [ 871.940201] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4850. [ 871.940204] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4851. [ 871.940214] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4852. [ 871.940223] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4853. [ 871.940233] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4854. [ 871.940242] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4855. [ 871.940245] [<ffffffff810523e6>] kthread+0x96/0xa0
  4856. [ 871.940248] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4857. [ 871.940251] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4858. [ 871.940254] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4859. [ 871.940256] ---[ end trace d1535c397c774143 ]---
  4860. [ 871.944701] ------------[ cut here ]------------
  4861. [ 871.944711] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4862. [ 871.944714] Hardware name: X8ST3
  4863. [ 871.944715] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4864. [ 871.944732] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4865. [ 871.944734] Call Trace:
  4866. [ 871.944739] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4867. [ 871.944742] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4868. [ 871.944750] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4869. [ 871.944761] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4870. [ 871.944768] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4871. [ 871.944775] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4872. [ 871.944782] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4873. [ 871.944786] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4874. [ 871.944795] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4875. [ 871.944805] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4876. [ 871.944816] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4877. [ 871.944820] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4878. [ 871.944830] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4879. [ 871.944840] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4880. [ 871.944844] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4881. [ 871.944847] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4882. [ 871.944857] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4883. [ 871.944866] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4884. [ 871.944876] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4885. [ 871.944918] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4886. [ 871.944923] [<ffffffff810523e6>] kthread+0x96/0xa0
  4887. [ 871.944928] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4888. [ 871.944933] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4889. [ 871.944938] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4890. [ 871.944941] ---[ end trace d1535c397c774144 ]---
  4891. [ 871.949405] ------------[ cut here ]------------
  4892. [ 871.949416] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4893. [ 871.949418] Hardware name: X8ST3
  4894. [ 871.949419] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4895. [ 871.949437] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4896. [ 871.949439] Call Trace:
  4897. [ 871.949443] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4898. [ 871.949446] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4899. [ 871.949454] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4900. [ 871.949465] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4901. [ 871.949473] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4902. [ 871.949480] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4903. [ 871.949487] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4904. [ 871.949491] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4905. [ 871.949499] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4906. [ 871.949510] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4907. [ 871.949520] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4908. [ 871.949524] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4909. [ 871.949535] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4910. [ 871.949545] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4911. [ 871.949549] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4912. [ 871.949552] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4913. [ 871.949562] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4914. [ 871.949571] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4915. [ 871.949580] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4916. [ 871.949590] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4917. [ 871.949593] [<ffffffff810523e6>] kthread+0x96/0xa0
  4918. [ 871.949596] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4919. [ 871.949599] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4920. [ 871.949602] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4921. [ 871.949604] ---[ end trace d1535c397c774145 ]---
  4922. [ 871.954353] ------------[ cut here ]------------
  4923. [ 871.954370] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4924. [ 871.954373] Hardware name: X8ST3
  4925. [ 871.954375] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4926. [ 871.954404] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4927. [ 871.954407] Call Trace:
  4928. [ 871.954414] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4929. [ 871.954420] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4930. [ 871.954433] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4931. [ 871.954451] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4932. [ 871.954464] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4933. [ 871.954475] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4934. [ 871.954487] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4935. [ 871.954493] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4936. [ 871.954508] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4937. [ 871.954525] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4938. [ 871.954543] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4939. [ 871.954549] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4940. [ 871.954566] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4941. [ 871.954583] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4942. [ 871.954590] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4943. [ 871.954595] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4944. [ 871.954611] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4945. [ 871.954626] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4946. [ 871.954642] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4947. [ 871.954658] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4948. [ 871.954663] [<ffffffff810523e6>] kthread+0x96/0xa0
  4949. [ 871.954669] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4950. [ 871.954674] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4951. [ 871.954678] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4952. [ 871.954682] ---[ end trace d1535c397c774146 ]---
  4953. [ 871.960485] ------------[ cut here ]------------
  4954. [ 871.960503] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4955. [ 871.960506] Hardware name: X8ST3
  4956. [ 871.960508] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4957. [ 871.960537] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4958. [ 871.960540] Call Trace:
  4959. [ 871.960547] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4960. [ 871.960553] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4961. [ 871.960566] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4962. [ 871.960584] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4963. [ 871.960597] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4964. [ 871.960608] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4965. [ 871.960620] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4966. [ 871.960627] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4967. [ 871.960641] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4968. [ 871.960658] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  4969. [ 871.960676] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  4970. [ 871.960682] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  4971. [ 871.960700] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  4972. [ 871.960717] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  4973. [ 871.960723] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  4974. [ 871.960728] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  4975. [ 871.960744] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  4976. [ 871.960760] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  4977. [ 871.960775] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4978. [ 871.960791] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  4979. [ 871.960796] [<ffffffff810523e6>] kthread+0x96/0xa0
  4980. [ 871.960802] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  4981. [ 871.960807] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  4982. [ 871.960811] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  4983. [ 871.960815] ---[ end trace d1535c397c774147 ]---
  4984. [ 871.966554] ------------[ cut here ]------------
  4985. [ 871.966564] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  4986. [ 871.966566] Hardware name: X8ST3
  4987. [ 871.966567] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  4988. [ 871.966583] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  4989. [ 871.966585] Call Trace:
  4990. [ 871.966590] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  4991. [ 871.966593] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  4992. [ 871.966600] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  4993. [ 871.966610] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  4994. [ 871.966618] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  4995. [ 871.966624] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  4996. [ 871.966631] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  4997. [ 871.966634] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  4998. [ 871.966642] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  4999. [ 871.966652] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5000. [ 871.966662] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5001. [ 871.966666] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5002. [ 871.966676] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5003. [ 871.966685] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5004. [ 871.966689] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5005. [ 871.966692] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5006. [ 871.966701] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5007. [ 871.966709] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5008. [ 871.966718] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5009. [ 871.966727] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5010. [ 871.966730] [<ffffffff810523e6>] kthread+0x96/0xa0
  5011. [ 871.966733] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5012. [ 871.966736] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5013. [ 871.966738] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5014. [ 871.966740] ---[ end trace d1535c397c774148 ]---
  5015. [ 871.971363] ------------[ cut here ]------------
  5016. [ 871.971373] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5017. [ 871.971375] Hardware name: X8ST3
  5018. [ 871.971376] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5019. [ 871.971393] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5020. [ 871.971395] Call Trace:
  5021. [ 871.971399] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5022. [ 871.971402] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5023. [ 871.971409] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5024. [ 871.971419] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5025. [ 871.971426] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5026. [ 871.971433] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5027. [ 871.971439] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5028. [ 871.971443] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5029. [ 871.971451] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5030. [ 871.971461] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5031. [ 871.971470] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5032. [ 871.971474] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5033. [ 871.971484] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5034. [ 871.971493] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5035. [ 871.971497] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5036. [ 871.971500] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5037. [ 871.971509] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5038. [ 871.971517] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5039. [ 871.971526] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5040. [ 871.971535] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5041. [ 871.971538] [<ffffffff810523e6>] kthread+0x96/0xa0
  5042. [ 871.971540] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5043. [ 871.971543] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5044. [ 871.971546] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5045. [ 871.971548] ---[ end trace d1535c397c774149 ]---
  5046. [ 871.975980] ------------[ cut here ]------------
  5047. [ 871.975998] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5048. [ 871.976000] Hardware name: X8ST3
  5049. [ 871.976002] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5050. [ 871.976019] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5051. [ 871.976021] Call Trace:
  5052. [ 871.976025] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5053. [ 871.976029] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5054. [ 871.976037] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5055. [ 871.976047] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5056. [ 871.976055] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5057. [ 871.976062] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5058. [ 871.976069] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5059. [ 871.976073] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5060. [ 871.976081] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5061. [ 871.976092] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5062. [ 871.976102] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5063. [ 871.976106] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5064. [ 871.976116] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5065. [ 871.976126] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5066. [ 871.976130] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5067. [ 871.976133] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5068. [ 871.976143] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5069. [ 871.976152] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5070. [ 871.976161] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5071. [ 871.976171] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5072. [ 871.976174] [<ffffffff810523e6>] kthread+0x96/0xa0
  5073. [ 871.976177] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5074. [ 871.976180] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5075. [ 871.976183] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5076. [ 871.976185] ---[ end trace d1535c397c77414a ]---
  5077. [ 871.980860] ------------[ cut here ]------------
  5078. [ 871.980870] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5079. [ 871.980929] Hardware name: X8ST3
  5080. [ 871.980931] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5081. [ 871.980962] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5082. [ 871.980966] Call Trace:
  5083. [ 871.980972] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5084. [ 871.980978] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5085. [ 871.980987] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5086. [ 871.981000] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5087. [ 871.981010] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5088. [ 871.981018] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5089. [ 871.981027] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5090. [ 871.981033] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5091. [ 871.981043] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5092. [ 871.981056] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5093. [ 871.981068] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5094. [ 871.981074] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5095. [ 871.981087] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5096. [ 871.981099] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5097. [ 871.981105] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5098. [ 871.981110] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5099. [ 871.981121] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5100. [ 871.981132] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5101. [ 871.981144] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5102. [ 871.981155] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5103. [ 871.981160] [<ffffffff810523e6>] kthread+0x96/0xa0
  5104. [ 871.981165] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5105. [ 871.981171] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5106. [ 871.981175] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5107. [ 871.981179] ---[ end trace d1535c397c77414b ]---
  5108. [ 871.985274] ------------[ cut here ]------------
  5109. [ 871.985285] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5110. [ 871.985287] Hardware name: X8ST3
  5111. [ 871.985289] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5112. [ 871.985306] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5113. [ 871.985308] Call Trace:
  5114. [ 871.985313] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5115. [ 871.985316] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5116. [ 871.985324] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5117. [ 871.985335] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5118. [ 871.985342] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5119. [ 871.985349] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5120. [ 871.985357] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5121. [ 871.985360] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5122. [ 871.985369] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5123. [ 871.985380] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5124. [ 871.985390] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5125. [ 871.985394] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5126. [ 871.985404] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5127. [ 871.985415] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5128. [ 871.985419] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5129. [ 871.985422] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5130. [ 871.985431] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5131. [ 871.985441] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5132. [ 871.985450] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5133. [ 871.985460] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5134. [ 871.985463] [<ffffffff810523e6>] kthread+0x96/0xa0
  5135. [ 871.985466] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5136. [ 871.985469] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5137. [ 871.985472] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5138. [ 871.985474] ---[ end trace d1535c397c77414c ]---
  5139. [ 871.989985] ------------[ cut here ]------------
  5140. [ 871.990005] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5141. [ 871.990007] Hardware name: X8ST3
  5142. [ 871.990008] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5143. [ 871.990026] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5144. [ 871.990028] Call Trace:
  5145. [ 871.990032] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5146. [ 871.990036] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5147. [ 871.990044] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5148. [ 871.990054] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5149. [ 871.990062] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5150. [ 871.990069] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5151. [ 871.990076] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5152. [ 871.990080] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5153. [ 871.990089] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5154. [ 871.990099] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5155. [ 871.990110] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5156. [ 871.990113] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5157. [ 871.990124] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5158. [ 871.990134] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5159. [ 871.990138] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5160. [ 871.990142] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5161. [ 871.990151] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5162. [ 871.990160] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5163. [ 871.990170] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5164. [ 871.990179] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5165. [ 871.990182] [<ffffffff810523e6>] kthread+0x96/0xa0
  5166. [ 871.990186] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5167. [ 871.990189] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5168. [ 871.990192] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5169. [ 871.990194] ---[ end trace d1535c397c77414d ]---
  5170. [ 871.994314] ------------[ cut here ]------------
  5171. [ 871.994324] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5172. [ 871.994327] Hardware name: X8ST3
  5173. [ 871.994328] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5174. [ 871.994345] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5175. [ 871.994347] Call Trace:
  5176. [ 871.994352] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5177. [ 871.994355] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5178. [ 871.994363] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5179. [ 871.994374] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5180. [ 871.994382] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5181. [ 871.994389] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5182. [ 871.994396] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5183. [ 871.994400] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5184. [ 871.994408] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5185. [ 871.994419] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5186. [ 871.994429] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5187. [ 871.994433] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5188. [ 871.994444] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5189. [ 871.994454] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5190. [ 871.994458] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5191. [ 871.994461] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5192. [ 871.994471] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5193. [ 871.994480] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5194. [ 871.994489] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5195. [ 871.994499] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5196. [ 871.994502] [<ffffffff810523e6>] kthread+0x96/0xa0
  5197. [ 871.994505] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5198. [ 871.994508] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5199. [ 871.994511] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5200. [ 871.994513] ---[ end trace d1535c397c77414e ]---
  5201. [ 871.999482] ------------[ cut here ]------------
  5202. [ 871.999493] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5203. [ 871.999495] Hardware name: X8ST3
  5204. [ 871.999496] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5205. [ 871.999514] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5206. [ 871.999516] Call Trace:
  5207. [ 871.999520] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5208. [ 871.999524] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5209. [ 871.999532] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5210. [ 871.999542] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5211. [ 871.999550] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5212. [ 871.999557] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5213. [ 871.999564] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5214. [ 871.999568] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5215. [ 871.999577] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5216. [ 871.999587] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5217. [ 871.999598] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5218. [ 871.999602] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5219. [ 871.999612] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5220. [ 871.999622] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5221. [ 871.999626] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5222. [ 871.999630] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5223. [ 871.999639] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5224. [ 871.999648] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5225. [ 871.999658] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5226. [ 871.999667] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5227. [ 871.999671] [<ffffffff810523e6>] kthread+0x96/0xa0
  5228. [ 871.999674] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5229. [ 871.999677] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5230. [ 871.999680] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5231. [ 871.999682] ---[ end trace d1535c397c77414f ]---
  5232. [ 872.004575] ------------[ cut here ]------------
  5233. [ 872.004592] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5234. [ 872.004596] Hardware name: X8ST3
  5235. [ 872.004598] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5236. [ 872.004626] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5237. [ 872.004630] Call Trace:
  5238. [ 872.004637] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5239. [ 872.004642] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5240. [ 872.004656] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5241. [ 872.004673] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5242. [ 872.004686] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5243. [ 872.004698] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5244. [ 872.004710] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5245. [ 872.004716] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5246. [ 872.004731] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5247. [ 872.004748] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5248. [ 872.004765] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5249. [ 872.004772] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5250. [ 872.004789] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5251. [ 872.004806] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5252. [ 872.004813] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5253. [ 872.004818] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5254. [ 872.004834] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5255. [ 872.004849] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5256. [ 872.004865] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5257. [ 872.004881] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5258. [ 872.004924] [<ffffffff810523e6>] kthread+0x96/0xa0
  5259. [ 872.004929] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5260. [ 872.004939] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5261. [ 872.004948] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5262. [ 872.004953] ---[ end trace d1535c397c774150 ]---
  5263. [ 872.010791] ------------[ cut here ]------------
  5264. [ 872.010809] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5265. [ 872.010812] Hardware name: X8ST3
  5266. [ 872.010814] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5267. [ 872.010843] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5268. [ 872.010846] Call Trace:
  5269. [ 872.010853] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5270. [ 872.010859] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5271. [ 872.010872] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5272. [ 872.010926] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5273. [ 872.010943] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5274. [ 872.010958] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5275. [ 872.010974] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5276. [ 872.010985] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5277. [ 872.011003] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5278. [ 872.011025] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5279. [ 872.011046] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5280. [ 872.011056] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5281. [ 872.011079] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5282. [ 872.011100] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5283. [ 872.011111] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5284. [ 872.011120] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5285. [ 872.011139] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5286. [ 872.011159] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5287. [ 872.011178] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5288. [ 872.011198] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5289. [ 872.011207] [<ffffffff810523e6>] kthread+0x96/0xa0
  5290. [ 872.011216] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5291. [ 872.011225] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5292. [ 872.011234] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5293. [ 872.011240] ---[ end trace d1535c397c774151 ]---
  5294. [ 872.016400] ------------[ cut here ]------------
  5295. [ 872.016410] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5296. [ 872.016412] Hardware name: X8ST3
  5297. [ 872.016413] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5298. [ 872.016430] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5299. [ 872.016432] Call Trace:
  5300. [ 872.016436] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5301. [ 872.016439] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5302. [ 872.016447] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5303. [ 872.016456] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5304. [ 872.016464] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5305. [ 872.016470] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5306. [ 872.016477] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5307. [ 872.016480] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5308. [ 872.016488] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5309. [ 872.016498] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5310. [ 872.016508] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5311. [ 872.016511] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5312. [ 872.016521] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5313. [ 872.016531] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5314. [ 872.016534] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5315. [ 872.016537] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5316. [ 872.016546] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5317. [ 872.016555] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5318. [ 872.016564] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5319. [ 872.016573] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5320. [ 872.016575] [<ffffffff810523e6>] kthread+0x96/0xa0
  5321. [ 872.016578] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5322. [ 872.016581] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5323. [ 872.016584] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5324. [ 872.016586] ---[ end trace d1535c397c774152 ]---
  5325. [ 872.021122] ------------[ cut here ]------------
  5326. [ 872.021132] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5327. [ 872.021134] Hardware name: X8ST3
  5328. [ 872.021135] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5329. [ 872.021152] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5330. [ 872.021153] Call Trace:
  5331. [ 872.021158] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5332. [ 872.021161] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5333. [ 872.021168] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5334. [ 872.021178] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5335. [ 872.021185] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5336. [ 872.021192] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5337. [ 872.021199] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5338. [ 872.021202] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5339. [ 872.021210] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5340. [ 872.021220] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5341. [ 872.021230] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5342. [ 872.021234] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5343. [ 872.021243] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5344. [ 872.021253] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5345. [ 872.021257] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5346. [ 872.021260] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5347. [ 872.021269] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5348. [ 872.021277] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5349. [ 872.021286] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5350. [ 872.021295] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5351. [ 872.021298] [<ffffffff810523e6>] kthread+0x96/0xa0
  5352. [ 872.021301] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5353. [ 872.021304] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5354. [ 872.021306] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5355. [ 872.021308] ---[ end trace d1535c397c774153 ]---
  5356. [ 872.025437] ------------[ cut here ]------------
  5357. [ 872.025447] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5358. [ 872.025449] Hardware name: X8ST3
  5359. [ 872.025450] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5360. [ 872.025466] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5361. [ 872.025468] Call Trace:
  5362. [ 872.025473] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5363. [ 872.025476] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5364. [ 872.025483] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5365. [ 872.025493] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5366. [ 872.025500] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5367. [ 872.025507] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5368. [ 872.025514] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5369. [ 872.025517] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5370. [ 872.025525] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5371. [ 872.025535] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5372. [ 872.025545] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5373. [ 872.025549] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5374. [ 872.025558] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5375. [ 872.025568] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5376. [ 872.025572] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5377. [ 872.025575] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5378. [ 872.025584] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5379. [ 872.025592] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5380. [ 872.025601] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5381. [ 872.025610] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5382. [ 872.025613] [<ffffffff810523e6>] kthread+0x96/0xa0
  5383. [ 872.025616] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5384. [ 872.025619] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5385. [ 872.025622] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5386. [ 872.025624] ---[ end trace d1535c397c774154 ]---
  5387. [ 872.030190] ------------[ cut here ]------------
  5388. [ 872.030200] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5389. [ 872.030202] Hardware name: X8ST3
  5390. [ 872.030203] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5391. [ 872.030220] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5392. [ 872.030222] Call Trace:
  5393. [ 872.030226] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5394. [ 872.030229] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5395. [ 872.030237] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5396. [ 872.030247] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5397. [ 872.030254] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5398. [ 872.030260] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5399. [ 872.030267] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5400. [ 872.030271] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5401. [ 872.030279] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5402. [ 872.030288] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5403. [ 872.030298] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5404. [ 872.030302] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5405. [ 872.030312] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5406. [ 872.030321] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5407. [ 872.030325] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5408. [ 872.030328] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5409. [ 872.030337] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5410. [ 872.030346] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5411. [ 872.030355] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5412. [ 872.030364] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5413. [ 872.030366] [<ffffffff810523e6>] kthread+0x96/0xa0
  5414. [ 872.030369] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5415. [ 872.030372] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5416. [ 872.030375] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5417. [ 872.030377] ---[ end trace d1535c397c774155 ]---
  5418. [ 872.035239] ------------[ cut here ]------------
  5419. [ 872.035249] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5420. [ 872.035251] Hardware name: X8ST3
  5421. [ 872.035252] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5422. [ 872.035269] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5423. [ 872.035271] Call Trace:
  5424. [ 872.035275] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5425. [ 872.035278] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5426. [ 872.035285] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5427. [ 872.035295] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5428. [ 872.035303] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5429. [ 872.035309] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5430. [ 872.035316] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5431. [ 872.035320] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5432. [ 872.035328] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5433. [ 872.035338] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5434. [ 872.035347] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5435. [ 872.035351] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5436. [ 872.035361] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5437. [ 872.035371] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5438. [ 872.035374] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5439. [ 872.035377] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5440. [ 872.035386] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5441. [ 872.035395] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5442. [ 872.035404] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5443. [ 872.035413] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5444. [ 872.035416] [<ffffffff810523e6>] kthread+0x96/0xa0
  5445. [ 872.035419] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5446. [ 872.035422] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5447. [ 872.035424] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5448. [ 872.035426] ---[ end trace d1535c397c774156 ]---
  5449. [ 872.040329] ------------[ cut here ]------------
  5450. [ 872.040344] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5451. [ 872.040346] Hardware name: X8ST3
  5452. [ 872.040348] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5453. [ 872.040364] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5454. [ 872.040366] Call Trace:
  5455. [ 872.040370] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5456. [ 872.040373] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5457. [ 872.040381] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5458. [ 872.040391] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5459. [ 872.040398] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5460. [ 872.040404] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5461. [ 872.040411] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5462. [ 872.040415] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5463. [ 872.040423] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5464. [ 872.040433] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5465. [ 872.040443] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5466. [ 872.040446] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5467. [ 872.040456] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5468. [ 872.040466] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5469. [ 872.040469] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5470. [ 872.040472] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5471. [ 872.040481] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5472. [ 872.040490] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5473. [ 872.040499] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5474. [ 872.040508] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5475. [ 872.040511] [<ffffffff810523e6>] kthread+0x96/0xa0
  5476. [ 872.040514] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5477. [ 872.040517] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5478. [ 872.040519] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5479. [ 872.040521] ---[ end trace d1535c397c774157 ]---
  5480. [ 872.045299] ------------[ cut here ]------------
  5481. [ 872.045309] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5482. [ 872.045311] Hardware name: X8ST3
  5483. [ 872.045313] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5484. [ 872.045330] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5485. [ 872.045332] Call Trace:
  5486. [ 872.045336] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5487. [ 872.045340] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5488. [ 872.045348] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5489. [ 872.045359] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5490. [ 872.045366] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5491. [ 872.045373] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5492. [ 872.045380] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5493. [ 872.045384] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5494. [ 872.045393] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5495. [ 872.045403] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5496. [ 872.045414] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5497. [ 872.045418] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5498. [ 872.045428] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5499. [ 872.045438] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5500. [ 872.045442] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5501. [ 872.045446] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5502. [ 872.045455] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5503. [ 872.045464] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5504. [ 872.045474] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5505. [ 872.045483] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5506. [ 872.045486] [<ffffffff810523e6>] kthread+0x96/0xa0
  5507. [ 872.045490] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5508. [ 872.045493] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5509. [ 872.045495] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5510. [ 872.045497] ---[ end trace d1535c397c774158 ]---
  5511. [ 872.050231] ------------[ cut here ]------------
  5512. [ 872.050242] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5513. [ 872.050244] Hardware name: X8ST3
  5514. [ 872.050246] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5515. [ 872.050263] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5516. [ 872.050265] Call Trace:
  5517. [ 872.050269] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5518. [ 872.050273] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5519. [ 872.050281] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5520. [ 872.050292] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5521. [ 872.050299] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5522. [ 872.050306] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5523. [ 872.050313] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5524. [ 872.050317] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5525. [ 872.050326] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5526. [ 872.050336] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5527. [ 872.050347] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5528. [ 872.050351] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5529. [ 872.050361] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5530. [ 872.050371] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5531. [ 872.050375] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5532. [ 872.050379] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5533. [ 872.050388] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5534. [ 872.050397] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5535. [ 872.050407] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5536. [ 872.050416] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5537. [ 872.050419] [<ffffffff810523e6>] kthread+0x96/0xa0
  5538. [ 872.050423] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5539. [ 872.050426] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5540. [ 872.050429] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5541. [ 872.050431] ---[ end trace d1535c397c774159 ]---
  5542. [ 872.055299] ------------[ cut here ]------------
  5543. [ 872.055310] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5544. [ 872.055312] Hardware name: X8ST3
  5545. [ 872.055313] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5546. [ 872.055331] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5547. [ 872.055333] Call Trace:
  5548. [ 872.055337] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5549. [ 872.055341] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5550. [ 872.055349] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5551. [ 872.055359] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5552. [ 872.055367] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5553. [ 872.055374] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5554. [ 872.055381] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5555. [ 872.055385] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5556. [ 872.055394] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5557. [ 872.055404] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5558. [ 872.055415] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5559. [ 872.055418] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5560. [ 872.055429] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5561. [ 872.055439] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5562. [ 872.055443] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5563. [ 872.055447] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5564. [ 872.055456] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5565. [ 872.055465] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5566. [ 872.055475] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5567. [ 872.055484] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5568. [ 872.055487] [<ffffffff810523e6>] kthread+0x96/0xa0
  5569. [ 872.055491] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5570. [ 872.055494] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5571. [ 872.055497] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5572. [ 872.055499] ---[ end trace d1535c397c77415a ]---
  5573. [ 872.060231] ------------[ cut here ]------------
  5574. [ 872.060242] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5575. [ 872.060244] Hardware name: X8ST3
  5576. [ 872.060245] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5577. [ 872.060263] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5578. [ 872.060265] Call Trace:
  5579. [ 872.060269] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5580. [ 872.060272] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5581. [ 872.060280] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5582. [ 872.060291] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5583. [ 872.060299] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5584. [ 872.060306] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5585. [ 872.060313] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5586. [ 872.060317] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5587. [ 872.060325] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5588. [ 872.060336] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5589. [ 872.060346] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5590. [ 872.060350] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5591. [ 872.060361] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5592. [ 872.060371] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5593. [ 872.060375] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5594. [ 872.060378] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5595. [ 872.060387] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5596. [ 872.060397] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5597. [ 872.060406] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5598. [ 872.060415] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5599. [ 872.060419] [<ffffffff810523e6>] kthread+0x96/0xa0
  5600. [ 872.060422] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5601. [ 872.060425] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5602. [ 872.060428] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5603. [ 872.060430] ---[ end trace d1535c397c77415b ]---
  5604. [ 872.065199] ------------[ cut here ]------------
  5605. [ 872.065210] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5606. [ 872.065212] Hardware name: X8ST3
  5607. [ 872.065213] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5608. [ 872.065231] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5609. [ 872.065233] Call Trace:
  5610. [ 872.065237] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5611. [ 872.065241] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5612. [ 872.065249] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5613. [ 872.065259] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5614. [ 872.065267] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5615. [ 872.065274] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5616. [ 872.065281] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5617. [ 872.065285] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5618. [ 872.065294] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5619. [ 872.065304] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5620. [ 872.065315] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5621. [ 872.065318] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5622. [ 872.065329] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5623. [ 872.065339] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5624. [ 872.065343] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5625. [ 872.065346] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5626. [ 872.065356] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5627. [ 872.065365] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5628. [ 872.065375] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5629. [ 872.065384] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5630. [ 872.065387] [<ffffffff810523e6>] kthread+0x96/0xa0
  5631. [ 872.065390] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5632. [ 872.065393] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5633. [ 872.065396] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5634. [ 872.065398] ---[ end trace d1535c397c77415c ]---
  5635. [ 872.070051] ------------[ cut here ]------------
  5636. [ 872.070061] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5637. [ 872.070064] Hardware name: X8ST3
  5638. [ 872.070065] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5639. [ 872.070082] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5640. [ 872.070085] Call Trace:
  5641. [ 872.070089] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5642. [ 872.070092] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5643. [ 872.070100] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5644. [ 872.070111] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5645. [ 872.070119] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5646. [ 872.070126] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5647. [ 872.070133] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5648. [ 872.070137] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5649. [ 872.070146] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5650. [ 872.070156] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5651. [ 872.070166] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5652. [ 872.070170] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5653. [ 872.070181] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5654. [ 872.070191] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5655. [ 872.070195] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5656. [ 872.070199] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5657. [ 872.070208] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5658. [ 872.070217] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5659. [ 872.070227] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5660. [ 872.070236] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5661. [ 872.070239] [<ffffffff810523e6>] kthread+0x96/0xa0
  5662. [ 872.070243] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5663. [ 872.070246] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5664. [ 872.070249] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5665. [ 872.070251] ---[ end trace d1535c397c77415d ]---
  5666. [ 872.075007] ------------[ cut here ]------------
  5667. [ 872.075024] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5668. [ 872.075028] Hardware name: X8ST3
  5669. [ 872.075030] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5670. [ 872.075052] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5671. [ 872.075054] Call Trace:
  5672. [ 872.075058] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5673. [ 872.075062] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5674. [ 872.075070] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5675. [ 872.075081] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5676. [ 872.075088] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5677. [ 872.075095] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5678. [ 872.075102] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5679. [ 872.075106] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5680. [ 872.075115] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5681. [ 872.075126] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5682. [ 872.075136] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5683. [ 872.075140] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5684. [ 872.075150] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5685. [ 872.075161] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5686. [ 872.075165] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5687. [ 872.075168] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5688. [ 872.075177] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5689. [ 872.075187] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5690. [ 872.075196] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5691. [ 872.075206] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5692. [ 872.075209] [<ffffffff810523e6>] kthread+0x96/0xa0
  5693. [ 872.075212] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5694. [ 872.075215] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5695. [ 872.075218] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5696. [ 872.075220] ---[ end trace d1535c397c77415e ]---
  5697. [ 872.079885] ------------[ cut here ]------------
  5698. [ 872.079896] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5699. [ 872.079898] Hardware name: X8ST3
  5700. [ 872.079899] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5701. [ 872.079917] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5702. [ 872.079919] Call Trace:
  5703. [ 872.079923] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5704. [ 872.079926] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5705. [ 872.079935] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5706. [ 872.079945] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5707. [ 872.079953] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5708. [ 872.079960] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5709. [ 872.079967] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5710. [ 872.079971] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5711. [ 872.079979] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5712. [ 872.079990] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5713. [ 872.080000] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5714. [ 872.080004] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5715. [ 872.080015] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5716. [ 872.080025] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5717. [ 872.080029] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5718. [ 872.080032] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5719. [ 872.080042] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5720. [ 872.080051] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5721. [ 872.080061] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5722. [ 872.080070] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5723. [ 872.080073] [<ffffffff810523e6>] kthread+0x96/0xa0
  5724. [ 872.080076] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5725. [ 872.080080] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5726. [ 872.080082] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5727. [ 872.080084] ---[ end trace d1535c397c77415f ]---
  5728. [ 872.084030] ------------[ cut here ]------------
  5729. [ 872.084040] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5730. [ 872.084042] Hardware name: X8ST3
  5731. [ 872.084044] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5732. [ 872.084061] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5733. [ 872.084063] Call Trace:
  5734. [ 872.084068] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5735. [ 872.084071] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5736. [ 872.084079] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5737. [ 872.084090] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5738. [ 872.084098] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5739. [ 872.084104] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5740. [ 872.084112] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5741. [ 872.084116] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5742. [ 872.084124] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5743. [ 872.084135] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5744. [ 872.084145] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5745. [ 872.084149] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5746. [ 872.084160] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5747. [ 872.084170] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5748. [ 872.084174] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5749. [ 872.084177] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5750. [ 872.084187] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5751. [ 872.084196] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5752. [ 872.084205] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5753. [ 872.084215] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5754. [ 872.084218] [<ffffffff810523e6>] kthread+0x96/0xa0
  5755. [ 872.084221] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5756. [ 872.084224] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5757. [ 872.084227] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5758. [ 872.084229] ---[ end trace d1535c397c774160 ]---
  5759. [ 872.088626] ------------[ cut here ]------------
  5760. [ 872.088636] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5761. [ 872.088639] Hardware name: X8ST3
  5762. [ 872.088640] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5763. [ 872.088657] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5764. [ 872.088659] Call Trace:
  5765. [ 872.088664] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5766. [ 872.088667] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5767. [ 872.088675] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5768. [ 872.088686] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5769. [ 872.088693] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5770. [ 872.088700] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5771. [ 872.088708] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5772. [ 872.088712] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5773. [ 872.088720] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5774. [ 872.088731] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5775. [ 872.088741] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5776. [ 872.088745] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5777. [ 872.088756] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5778. [ 872.088766] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5779. [ 872.088770] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5780. [ 872.088773] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5781. [ 872.088783] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5782. [ 872.088792] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5783. [ 872.088801] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5784. [ 872.088811] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5785. [ 872.088814] [<ffffffff810523e6>] kthread+0x96/0xa0
  5786. [ 872.088817] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5787. [ 872.088820] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5788. [ 872.088823] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5789. [ 872.088825] ---[ end trace d1535c397c774161 ]---
  5790. [ 872.093500] ------------[ cut here ]------------
  5791. [ 872.093511] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5792. [ 872.093513] Hardware name: X8ST3
  5793. [ 872.093514] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5794. [ 872.093532] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5795. [ 872.093534] Call Trace:
  5796. [ 872.093538] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5797. [ 872.093542] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5798. [ 872.093550] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5799. [ 872.093560] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5800. [ 872.093568] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5801. [ 872.093575] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5802. [ 872.093582] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5803. [ 872.093586] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5804. [ 872.093595] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5805. [ 872.093605] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5806. [ 872.093615] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5807. [ 872.093619] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5808. [ 872.093630] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5809. [ 872.093640] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5810. [ 872.093644] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5811. [ 872.093647] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5812. [ 872.093657] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5813. [ 872.093666] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5814. [ 872.093675] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5815. [ 872.093685] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5816. [ 872.093688] [<ffffffff810523e6>] kthread+0x96/0xa0
  5817. [ 872.093691] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5818. [ 872.093694] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5819. [ 872.093697] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5820. [ 872.093699] ---[ end trace d1535c397c774162 ]---
  5821. [ 872.098516] ------------[ cut here ]------------
  5822. [ 872.098526] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5823. [ 872.098529] Hardware name: X8ST3
  5824. [ 872.098530] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5825. [ 872.098547] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5826. [ 872.098549] Call Trace:
  5827. [ 872.098554] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5828. [ 872.098557] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5829. [ 872.098565] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5830. [ 872.098576] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5831. [ 872.098583] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5832. [ 872.098590] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5833. [ 872.098598] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5834. [ 872.098601] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5835. [ 872.098610] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5836. [ 872.098621] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5837. [ 872.098631] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5838. [ 872.098635] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5839. [ 872.098645] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5840. [ 872.098656] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5841. [ 872.098660] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5842. [ 872.098663] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5843. [ 872.098672] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5844. [ 872.098682] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5845. [ 872.098691] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5846. [ 872.098700] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5847. [ 872.098703] [<ffffffff810523e6>] kthread+0x96/0xa0
  5848. [ 872.098707] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5849. [ 872.098710] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5850. [ 872.098713] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5851. [ 872.098715] ---[ end trace d1535c397c774163 ]---
  5852. [ 872.103370] ------------[ cut here ]------------
  5853. [ 872.103381] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5854. [ 872.103383] Hardware name: X8ST3
  5855. [ 872.103384] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5856. [ 872.103402] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5857. [ 872.103404] Call Trace:
  5858. [ 872.103408] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5859. [ 872.103412] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5860. [ 872.103419] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5861. [ 872.103430] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5862. [ 872.103438] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5863. [ 872.103445] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5864. [ 872.103452] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5865. [ 872.103456] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5866. [ 872.103464] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5867. [ 872.103475] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5868. [ 872.103485] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5869. [ 872.103489] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5870. [ 872.103500] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5871. [ 872.103510] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5872. [ 872.103514] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5873. [ 872.103517] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5874. [ 872.103527] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5875. [ 872.103536] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5876. [ 872.103546] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5877. [ 872.103555] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5878. [ 872.103558] [<ffffffff810523e6>] kthread+0x96/0xa0
  5879. [ 872.103561] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5880. [ 872.103565] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5881. [ 872.103567] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5882. [ 872.103569] ---[ end trace d1535c397c774164 ]---
  5883. [ 872.108335] ------------[ cut here ]------------
  5884. [ 872.108346] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5885. [ 872.108348] Hardware name: X8ST3
  5886. [ 872.108349] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5887. [ 872.108367] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5888. [ 872.108369] Call Trace:
  5889. [ 872.108373] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5890. [ 872.108377] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5891. [ 872.108385] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5892. [ 872.108396] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5893. [ 872.108403] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5894. [ 872.108410] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5895. [ 872.108417] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5896. [ 872.108421] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5897. [ 872.108430] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5898. [ 872.108440] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5899. [ 872.108451] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5900. [ 872.108455] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5901. [ 872.108465] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5902. [ 872.108475] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5903. [ 872.108479] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5904. [ 872.108483] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5905. [ 872.108492] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5906. [ 872.108501] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5907. [ 872.108511] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5908. [ 872.108520] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5909. [ 872.108523] [<ffffffff810523e6>] kthread+0x96/0xa0
  5910. [ 872.108527] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5911. [ 872.108530] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5912. [ 872.108533] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5913. [ 872.108535] ---[ end trace d1535c397c774165 ]---
  5914. [ 872.113243] ------------[ cut here ]------------
  5915. [ 872.113253] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5916. [ 872.113255] Hardware name: X8ST3
  5917. [ 872.113257] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5918. [ 872.113274] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5919. [ 872.113276] Call Trace:
  5920. [ 872.113281] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5921. [ 872.113284] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5922. [ 872.113292] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5923. [ 872.113303] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5924. [ 872.113310] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5925. [ 872.113317] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5926. [ 872.113324] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5927. [ 872.113328] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5928. [ 872.113337] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5929. [ 872.113348] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5930. [ 872.113358] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5931. [ 872.113362] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5932. [ 872.113373] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5933. [ 872.113383] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5934. [ 872.113387] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5935. [ 872.113390] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5936. [ 872.113399] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5937. [ 872.113409] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5938. [ 872.113418] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5939. [ 872.113428] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5940. [ 872.113431] [<ffffffff810523e6>] kthread+0x96/0xa0
  5941. [ 872.113434] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5942. [ 872.113437] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5943. [ 872.113440] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5944. [ 872.113442] ---[ end trace d1535c397c774166 ]---
  5945. [ 872.118231] ------------[ cut here ]------------
  5946. [ 872.118241] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5947. [ 872.118244] Hardware name: X8ST3
  5948. [ 872.118245] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5949. [ 872.118262] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5950. [ 872.118264] Call Trace:
  5951. [ 872.118269] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5952. [ 872.118272] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5953. [ 872.118280] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5954. [ 872.118291] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5955. [ 872.118298] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5956. [ 872.118305] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5957. [ 872.118312] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5958. [ 872.118316] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5959. [ 872.118325] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5960. [ 872.118336] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5961. [ 872.118346] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5962. [ 872.118350] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5963. [ 872.118361] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5964. [ 872.118371] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5965. [ 872.118375] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5966. [ 872.118378] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5967. [ 872.118388] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5968. [ 872.118397] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  5969. [ 872.118406] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5970. [ 872.118416] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  5971. [ 872.118419] [<ffffffff810523e6>] kthread+0x96/0xa0
  5972. [ 872.118422] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  5973. [ 872.118425] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  5974. [ 872.118428] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  5975. [ 872.118430] ---[ end trace d1535c397c774167 ]---
  5976. [ 872.123289] ------------[ cut here ]------------
  5977. [ 872.123299] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  5978. [ 872.123302] Hardware name: X8ST3
  5979. [ 872.123303] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  5980. [ 872.123320] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  5981. [ 872.123322] Call Trace:
  5982. [ 872.123327] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  5983. [ 872.123330] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  5984. [ 872.123338] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  5985. [ 872.123349] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  5986. [ 872.123356] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  5987. [ 872.123363] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  5988. [ 872.123370] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  5989. [ 872.123374] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  5990. [ 872.123383] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  5991. [ 872.123394] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  5992. [ 872.123404] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  5993. [ 872.123408] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  5994. [ 872.123418] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  5995. [ 872.123429] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  5996. [ 872.123433] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  5997. [ 872.123436] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  5998. [ 872.123445] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  5999. [ 872.123455] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  6000. [ 872.123464] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6001. [ 872.123473] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6002. [ 872.123477] [<ffffffff810523e6>] kthread+0x96/0xa0
  6003. [ 872.123480] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6004. [ 872.123483] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6005. [ 872.123486] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6006. [ 872.123488] ---[ end trace d1535c397c774168 ]---
  6007. [ 872.128124] ------------[ cut here ]------------
  6008. [ 872.128135] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6009. [ 872.128137] Hardware name: X8ST3
  6010. [ 872.128138] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6011. [ 872.128156] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6012. [ 872.128158] Call Trace:
  6013. [ 872.128162] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6014. [ 872.128166] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6015. [ 872.128174] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6016. [ 872.128184] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6017. [ 872.128192] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  6018. [ 872.128199] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6019. [ 872.128206] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6020. [ 872.128210] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6021. [ 872.128219] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6022. [ 872.128229] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  6023. [ 872.128240] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6024. [ 872.128243] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6025. [ 872.128254] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6026. [ 872.128264] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6027. [ 872.128268] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6028. [ 872.128271] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6029. [ 872.128281] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6030. [ 872.128290] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  6031. [ 872.128300] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6032. [ 872.128309] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6033. [ 872.128312] [<ffffffff810523e6>] kthread+0x96/0xa0
  6034. [ 872.128315] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6035. [ 872.128319] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6036. [ 872.128321] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6037. [ 872.128323] ---[ end trace d1535c397c774169 ]---
  6038. [ 872.133071] ------------[ cut here ]------------
  6039. [ 872.133081] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6040. [ 872.133083] Hardware name: X8ST3
  6041. [ 872.133085] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6042. [ 872.133102] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6043. [ 872.133104] Call Trace:
  6044. [ 872.133108] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6045. [ 872.133112] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6046. [ 872.133120] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6047. [ 872.133131] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6048. [ 872.133138] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  6049. [ 872.133145] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6050. [ 872.133152] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6051. [ 872.133156] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6052. [ 872.133165] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6053. [ 872.133175] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  6054. [ 872.133186] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6055. [ 872.133190] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6056. [ 872.133200] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6057. [ 872.133210] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6058. [ 872.133214] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6059. [ 872.133218] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6060. [ 872.133227] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6061. [ 872.133236] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  6062. [ 872.133246] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6063. [ 872.133255] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6064. [ 872.133258] [<ffffffff810523e6>] kthread+0x96/0xa0
  6065. [ 872.133261] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6066. [ 872.133265] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6067. [ 872.133267] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6068. [ 872.133269] ---[ end trace d1535c397c77416a ]---
  6069. [ 872.138453] ------------[ cut here ]------------
  6070. [ 872.138463] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6071. [ 872.138466] Hardware name: X8ST3
  6072. [ 872.138467] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6073. [ 872.138484] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6074. [ 872.138486] Call Trace:
  6075. [ 872.138491] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6076. [ 872.138494] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6077. [ 872.138502] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6078. [ 872.138513] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6079. [ 872.138521] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  6080. [ 872.138527] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6081. [ 872.138535] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6082. [ 872.138539] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6083. [ 872.138547] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6084. [ 872.138558] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  6085. [ 872.138568] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6086. [ 872.138572] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6087. [ 872.138583] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6088. [ 872.138593] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6089. [ 872.138597] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6090. [ 872.138600] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6091. [ 872.138610] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6092. [ 872.138619] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  6093. [ 872.138628] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6094. [ 872.138638] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6095. [ 872.138641] [<ffffffff810523e6>] kthread+0x96/0xa0
  6096. [ 872.138644] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6097. [ 872.138647] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6098. [ 872.138650] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6099. [ 872.138652] ---[ end trace d1535c397c77416b ]---
  6100. [ 872.143497] ------------[ cut here ]------------
  6101. [ 872.143507] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6102. [ 872.143510] Hardware name: X8ST3
  6103. [ 872.143511] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6104. [ 872.143528] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6105. [ 872.143530] Call Trace:
  6106. [ 872.143535] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6107. [ 872.143538] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6108. [ 872.143546] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6109. [ 872.143557] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6110. [ 872.143564] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  6111. [ 872.143571] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6112. [ 872.143578] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6113. [ 872.143582] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6114. [ 872.143591] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6115. [ 872.143601] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  6116. [ 872.143612] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6117. [ 872.143616] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6118. [ 872.143626] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6119. [ 872.143636] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6120. [ 872.143640] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6121. [ 872.143644] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6122. [ 872.143653] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6123. [ 872.143662] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  6124. [ 872.143672] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6125. [ 872.143681] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6126. [ 872.143684] [<ffffffff810523e6>] kthread+0x96/0xa0
  6127. [ 872.143688] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6128. [ 872.143691] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6129. [ 872.143694] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6130. [ 872.143696] ---[ end trace d1535c397c77416c ]---
  6131. [ 872.148395] ------------[ cut here ]------------
  6132. [ 872.148406] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6133. [ 872.148408] Hardware name: X8ST3
  6134. [ 872.148409] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6135. [ 872.148427] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6136. [ 872.148429] Call Trace:
  6137. [ 872.148433] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6138. [ 872.148437] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6139. [ 872.148445] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6140. [ 872.148455] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6141. [ 872.148463] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  6142. [ 872.148470] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6143. [ 872.148477] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6144. [ 872.148481] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6145. [ 872.148490] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6146. [ 872.148500] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  6147. [ 872.148510] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6148. [ 872.148514] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6149. [ 872.148525] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6150. [ 872.148535] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6151. [ 872.148539] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6152. [ 872.148542] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6153. [ 872.148552] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6154. [ 872.148561] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  6155. [ 872.148570] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6156. [ 872.148580] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6157. [ 872.148583] [<ffffffff810523e6>] kthread+0x96/0xa0
  6158. [ 872.148586] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6159. [ 872.148589] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6160. [ 872.148592] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6161. [ 872.148594] ---[ end trace d1535c397c77416d ]---
  6162. [ 872.153459] ------------[ cut here ]------------
  6163. [ 872.153469] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6164. [ 872.153472] Hardware name: X8ST3
  6165. [ 872.153473] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6166. [ 872.153490] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6167. [ 872.153492] Call Trace:
  6168. [ 872.153497] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6169. [ 872.153500] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6170. [ 872.153508] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6171. [ 872.153519] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6172. [ 872.153526] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  6173. [ 872.153533] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6174. [ 872.153541] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6175. [ 872.153544] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6176. [ 872.153553] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6177. [ 872.153564] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  6178. [ 872.153574] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6179. [ 872.153578] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6180. [ 872.153589] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6181. [ 872.153599] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6182. [ 872.153603] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6183. [ 872.153606] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6184. [ 872.153616] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6185. [ 872.153625] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  6186. [ 872.153634] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6187. [ 872.153644] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6188. [ 872.153647] [<ffffffff810523e6>] kthread+0x96/0xa0
  6189. [ 872.153650] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6190. [ 872.153653] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6191. [ 872.153656] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6192. [ 872.153658] ---[ end trace d1535c397c77416e ]---
  6193. [ 872.158617] ------------[ cut here ]------------
  6194. [ 872.158628] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6195. [ 872.158630] Hardware name: X8ST3
  6196. [ 872.158631] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6197. [ 872.158648] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6198. [ 872.158651] Call Trace:
  6199. [ 872.158655] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6200. [ 872.158658] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6201. [ 872.158666] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6202. [ 872.158677] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6203. [ 872.158685] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  6204. [ 872.158692] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6205. [ 872.158699] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6206. [ 872.158703] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6207. [ 872.158711] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6208. [ 872.158722] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  6209. [ 872.158732] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6210. [ 872.158736] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6211. [ 872.158747] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6212. [ 872.158757] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6213. [ 872.158761] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6214. [ 872.158764] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6215. [ 872.158774] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6216. [ 872.158783] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  6217. [ 872.158792] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6218. [ 872.158802] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6219. [ 872.158805] [<ffffffff810523e6>] kthread+0x96/0xa0
  6220. [ 872.158808] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6221. [ 872.158811] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6222. [ 872.158814] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6223. [ 872.158816] ---[ end trace d1535c397c77416f ]---
  6224. [ 872.163281] ------------[ cut here ]------------
  6225. [ 872.163291] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6226. [ 872.163294] Hardware name: X8ST3
  6227. [ 872.163295] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6228. [ 872.163312] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6229. [ 872.163315] Call Trace:
  6230. [ 872.163319] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6231. [ 872.163322] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6232. [ 872.163330] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6233. [ 872.163341] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6234. [ 872.163349] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  6235. [ 872.163356] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6236. [ 872.163363] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6237. [ 872.163367] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6238. [ 872.163375] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6239. [ 872.163386] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  6240. [ 872.163396] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6241. [ 872.163400] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6242. [ 872.163411] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6243. [ 872.163421] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6244. [ 872.163425] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6245. [ 872.163428] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6246. [ 872.163437] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6247. [ 872.163447] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  6248. [ 872.163456] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6249. [ 872.163466] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6250. [ 872.163469] [<ffffffff810523e6>] kthread+0x96/0xa0
  6251. [ 872.163472] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6252. [ 872.163475] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6253. [ 872.163478] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6254. [ 872.163480] ---[ end trace d1535c397c774170 ]---
  6255. [ 872.167755] ------------[ cut here ]------------
  6256. [ 872.167765] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6257. [ 872.167768] Hardware name: X8ST3
  6258. [ 872.167769] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6259. [ 872.167786] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6260. [ 872.167788] Call Trace:
  6261. [ 872.167793] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6262. [ 872.167796] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6263. [ 872.167804] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6264. [ 872.167815] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6265. [ 872.167822] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  6266. [ 872.167829] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6267. [ 872.167836] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6268. [ 872.167840] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6269. [ 872.167849] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6270. [ 872.167860] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  6271. [ 872.167870] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6272. [ 872.167913] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6273. [ 872.167924] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6274. [ 872.167936] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6275. [ 872.167942] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6276. [ 872.167947] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6277. [ 872.167959] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6278. [ 872.167970] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  6279. [ 872.167982] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6280. [ 872.167993] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6281. [ 872.167998] [<ffffffff810523e6>] kthread+0x96/0xa0
  6282. [ 872.168003] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6283. [ 872.168008] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6284. [ 872.168013] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6285. [ 872.168016] ---[ end trace d1535c397c774171 ]---
  6286. [ 872.172619] ------------[ cut here ]------------
  6287. [ 872.172629] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6288. [ 872.172631] Hardware name: X8ST3
  6289. [ 872.172632] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6290. [ 872.172650] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6291. [ 872.172652] Call Trace:
  6292. [ 872.172656] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6293. [ 872.172660] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6294. [ 872.172668] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6295. [ 872.172678] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6296. [ 872.172686] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  6297. [ 872.172693] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6298. [ 872.172700] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6299. [ 872.172704] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6300. [ 872.172713] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6301. [ 872.172723] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  6302. [ 872.172734] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6303. [ 872.172737] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6304. [ 872.172748] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6305. [ 872.172758] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6306. [ 872.172762] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6307. [ 872.172765] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6308. [ 872.172775] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6309. [ 872.172784] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  6310. [ 872.172793] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6311. [ 872.172803] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6312. [ 872.172806] [<ffffffff810523e6>] kthread+0x96/0xa0
  6313. [ 872.172809] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6314. [ 872.172812] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6315. [ 872.172815] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6316. [ 872.172817] ---[ end trace d1535c397c774172 ]---
  6317. [ 872.177388] ------------[ cut here ]------------
  6318. [ 872.177399] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6319. [ 872.177401] Hardware name: X8ST3
  6320. [ 872.177402] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6321. [ 872.177419] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6322. [ 872.177422] Call Trace:
  6323. [ 872.177426] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6324. [ 872.177429] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6325. [ 872.177437] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6326. [ 872.177448] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6327. [ 872.177456] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  6328. [ 872.177463] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6329. [ 872.177470] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6330. [ 872.177474] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6331. [ 872.177482] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6332. [ 872.177493] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  6333. [ 872.177503] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6334. [ 872.177507] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6335. [ 872.177518] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6336. [ 872.177528] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6337. [ 872.177532] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6338. [ 872.177535] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6339. [ 872.177545] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6340. [ 872.177554] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  6341. [ 872.177563] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6342. [ 872.177573] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6343. [ 872.177576] [<ffffffff810523e6>] kthread+0x96/0xa0
  6344. [ 872.177579] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6345. [ 872.177582] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6346. [ 872.177585] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6347. [ 872.177587] ---[ end trace d1535c397c774173 ]---
  6348. [ 872.182488] ------------[ cut here ]------------
  6349. [ 872.182498] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6350. [ 872.182501] Hardware name: X8ST3
  6351. [ 872.182502] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6352. [ 872.182519] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6353. [ 872.182521] Call Trace:
  6354. [ 872.182526] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6355. [ 872.182529] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6356. [ 872.182537] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6357. [ 872.182548] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6358. [ 872.182555] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  6359. [ 872.182562] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6360. [ 872.182569] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6361. [ 872.182573] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6362. [ 872.182582] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6363. [ 872.182593] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  6364. [ 872.182603] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6365. [ 872.182607] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6366. [ 872.182617] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6367. [ 872.182628] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6368. [ 872.182632] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6369. [ 872.182635] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6370. [ 872.182644] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6371. [ 872.182654] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  6372. [ 872.182663] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6373. [ 872.182673] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6374. [ 872.182676] [<ffffffff810523e6>] kthread+0x96/0xa0
  6375. [ 872.182679] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6376. [ 872.182682] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6377. [ 872.182685] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6378. [ 872.182687] ---[ end trace d1535c397c774174 ]---
  6379. [ 872.187453] ------------[ cut here ]------------
  6380. [ 872.187464] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6381. [ 872.187466] Hardware name: X8ST3
  6382. [ 872.187468] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6383. [ 872.187485] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6384. [ 872.187487] Call Trace:
  6385. [ 872.187492] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6386. [ 872.187495] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6387. [ 872.187503] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6388. [ 872.187514] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6389. [ 872.187521] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  6390. [ 872.187528] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6391. [ 872.187535] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6392. [ 872.187539] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6393. [ 872.187548] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6394. [ 872.187558] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  6395. [ 872.187569] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6396. [ 872.187573] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6397. [ 872.187583] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6398. [ 872.187593] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6399. [ 872.187597] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6400. [ 872.187600] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6401. [ 872.187610] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6402. [ 872.187619] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  6403. [ 872.187628] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6404. [ 872.187638] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6405. [ 872.187641] [<ffffffff810523e6>] kthread+0x96/0xa0
  6406. [ 872.187644] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6407. [ 872.187647] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6408. [ 872.187650] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6409. [ 872.187652] ---[ end trace d1535c397c774175 ]---
  6410. [ 872.192537] ------------[ cut here ]------------
  6411. [ 872.192547] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6412. [ 872.192549] Hardware name: X8ST3
  6413. [ 872.192551] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6414. [ 872.192568] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6415. [ 872.192570] Call Trace:
  6416. [ 872.192574] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6417. [ 872.192578] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6418. [ 872.192586] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6419. [ 872.192596] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6420. [ 872.192604] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  6421. [ 872.192611] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6422. [ 872.192618] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6423. [ 872.192622] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6424. [ 872.192631] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6425. [ 872.192641] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  6426. [ 872.192652] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6427. [ 872.192656] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6428. [ 872.192666] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6429. [ 872.192676] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6430. [ 872.192680] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6431. [ 872.192683] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6432. [ 872.192693] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6433. [ 872.192702] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  6434. [ 872.192712] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6435. [ 872.192721] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6436. [ 872.192724] [<ffffffff810523e6>] kthread+0x96/0xa0
  6437. [ 872.192727] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6438. [ 872.192731] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6439. [ 872.192733] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6440. [ 872.192735] ---[ end trace d1535c397c774176 ]---
  6441. [ 872.197617] ------------[ cut here ]------------
  6442. [ 872.197627] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6443. [ 872.197630] Hardware name: X8ST3
  6444. [ 872.197631] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6445. [ 872.197648] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6446. [ 872.197650] Call Trace:
  6447. [ 872.197655] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6448. [ 872.197658] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6449. [ 872.197666] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6450. [ 872.197677] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6451. [ 872.197684] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  6452. [ 872.197691] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6453. [ 872.197698] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6454. [ 872.197702] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6455. [ 872.197711] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6456. [ 872.197722] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  6457. [ 872.197732] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6458. [ 872.197736] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6459. [ 872.197746] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6460. [ 872.197757] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6461. [ 872.197761] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6462. [ 872.197764] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6463. [ 872.197773] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6464. [ 872.197783] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  6465. [ 872.197792] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6466. [ 872.197801] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6467. [ 872.197805] [<ffffffff810523e6>] kthread+0x96/0xa0
  6468. [ 872.197808] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6469. [ 872.197811] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6470. [ 872.197814] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6471. [ 872.197816] ---[ end trace d1535c397c774177 ]---
  6472. [ 872.202371] ------------[ cut here ]------------
  6473. [ 872.202382] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6474. [ 872.202384] Hardware name: X8ST3
  6475. [ 872.202385] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6476. [ 872.202403] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6477. [ 872.202405] Call Trace:
  6478. [ 872.202409] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6479. [ 872.202412] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6480. [ 872.202420] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6481. [ 872.202431] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6482. [ 872.202439] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  6483. [ 872.202446] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6484. [ 872.202453] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6485. [ 872.202457] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6486. [ 872.202466] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6487. [ 872.202476] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  6488. [ 872.202486] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6489. [ 872.202490] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6490. [ 872.202501] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6491. [ 872.202511] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6492. [ 872.202515] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6493. [ 872.202518] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6494. [ 872.202528] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6495. [ 872.202537] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  6496. [ 872.202547] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6497. [ 872.202556] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6498. [ 872.202559] [<ffffffff810523e6>] kthread+0x96/0xa0
  6499. [ 872.202563] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6500. [ 872.202566] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6501. [ 872.202568] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6502. [ 872.202570] ---[ end trace d1535c397c774178 ]---
  6503. [ 872.206921] ------------[ cut here ]------------
  6504. [ 872.206931] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6505. [ 872.206933] Hardware name: X8ST3
  6506. [ 872.206935] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6507. [ 872.206952] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6508. [ 872.206954] Call Trace:
  6509. [ 872.206959] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6510. [ 872.206962] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6511. [ 872.206970] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6512. [ 872.206981] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6513. [ 872.206989] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  6514. [ 872.206995] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6515. [ 872.207003] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6516. [ 872.207007] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6517. [ 872.207015] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6518. [ 872.207026] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  6519. [ 872.207036] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6520. [ 872.207040] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6521. [ 872.207050] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6522. [ 872.207061] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6523. [ 872.207064] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6524. [ 872.207068] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6525. [ 872.207077] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6526. [ 872.207086] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  6527. [ 872.207096] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6528. [ 872.207105] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6529. [ 872.207108] [<ffffffff810523e6>] kthread+0x96/0xa0
  6530. [ 872.207111] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6531. [ 872.207115] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6532. [ 872.207117] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6533. [ 872.207119] ---[ end trace d1535c397c774179 ]---
  6534. [ 872.211333] ------------[ cut here ]------------
  6535. [ 872.211352] WARNING: at fs/btrfs/extent-tree.c:5712 btrfs_alloc_free_block+0x1e8/0x340 [btrfs]()
  6536. [ 872.211354] Hardware name: X8ST3
  6537. [ 872.211355] 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 mptscsih mptbase i7core_edac scsi_transport_sas bnx2 i5000_edac edac_core ipmi_devintf ipmi_msghandler
  6538. [ 872.211373] Pid: 6445, comm: btrfs-freespace Tainted: G W 3.1.1-un13.1-64-nohz #1
  6539. [ 872.211375] Call Trace:
  6540. [ 872.211380] [<ffffffff81036e0a>] warn_slowpath_common+0x7a/0xb0
  6541. [ 872.211383] [<ffffffff81036e55>] warn_slowpath_null+0x15/0x20
  6542. [ 872.211391] [<ffffffffa013bd68>] btrfs_alloc_free_block+0x1e8/0x340 [btrfs]
  6543. [ 872.211402] [<ffffffffa0167cd1>] ? read_extent_buffer+0xa1/0x170 [btrfs]
  6544. [ 872.211409] [<ffffffffa0131dda>] split_leaf+0x12a/0x740 [btrfs]
  6545. [ 872.211416] [<ffffffffa012e50f>] ? btrfs_leaf_free_space+0x5f/0xb0 [btrfs]
  6546. [ 872.211423] [<ffffffffa0133d1d>] btrfs_search_slot+0x82d/0x890 [btrfs]
  6547. [ 872.211427] [<ffffffff8102adde>] ? __wake_up+0x4e/0x70
  6548. [ 872.211436] [<ffffffffa0143eb4>] btrfs_csum_file_blocks+0x4a4/0x6a0 [btrfs]
  6549. [ 872.211447] [<ffffffffa0150871>] add_pending_csums+0x41/0x60 [btrfs]
  6550. [ 872.211457] [<ffffffffa015b08c>] btrfs_finish_ordered_io+0x21c/0x340 [btrfs]
  6551. [ 872.211461] [<ffffffff8109508e>] ? test_clear_page_writeback+0x12e/0x170
  6552. [ 872.211471] [<ffffffffa015b1c5>] btrfs_writepage_end_io_hook+0x15/0x20 [btrfs]
  6553. [ 872.211482] [<ffffffffa0169deb>] end_bio_extent_writepage+0x13b/0x180 [btrfs]
  6554. [ 872.211486] [<ffffffff81043792>] ? del_timer_sync+0x32/0x50
  6555. [ 872.211489] [<ffffffff810f8ff8>] bio_endio+0x18/0x40
  6556. [ 872.211498] [<ffffffffa0148d94>] end_workqueue_fn+0xf4/0x130 [btrfs]
  6557. [ 872.211508] [<ffffffffa0174bfc>] worker_loop+0x14c/0x500 [btrfs]
  6558. [ 872.211517] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6559. [ 872.211527] [<ffffffffa0174ab0>] ? btrfs_queue_worker+0x310/0x310 [btrfs]
  6560. [ 872.211530] [<ffffffff810523e6>] kthread+0x96/0xa0
  6561. [ 872.211533] [<ffffffff813ff7f4>] kernel_thread_helper+0x4/0x10
  6562. [ 872.211536] [<ffffffff81052350>] ? kthread_worker_fn+0x130/0x130
  6563. [ 872.211539] [<ffffffff813ff7f0>] ? gs_change+0xb/0xb
  6564. [ 872.211541] ---[ end trace d1535c397c77417a ]---
  6565.  
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