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  1. [ 192.870385][ T5157] BUG: unable to handle page fault for address: 00000000ffff8888
  2. [ 192.870622][ T7992] ==================================================================
  3. [ 192.871437][ T5157] #PF: supervisor read access in kernel mode
  4. [ 192.871447][ T5157] #PF: error_code(0x0000) - not-present page
  5. [ 192.871455][ T5157] PGD 15dc2067
  6. [ 192.874203][ T7992] BUG: KFENCE: invalid read in memmove+0x4c/0x1b0
  7. [ 192.874203][ T7992]
  8. [ 192.874985][ T5157] P4D 15dc2067 PUD 0
  9. [ 192.875002][ T5157] Oops: 0000 [#1] PREEMPT SMP KASAN
  10. [ 192.876694][ T7992] Invalid read at 0xffff88807ea00000:
  11. [ 192.877152][ T5157] CPU: 1 PID: 5157 Comm: kworker/u4:2 Not tainted 6.6.0-rc7-syzkaller-00142-g888cf78c29e2 #0
  12. [ 192.879580][ T7992] memmove+0x4c/0x1b0
  13. [ 192.880097][ T5157] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
  14. [ 192.880108][ T5157] Workqueue: netns cleanup_net
  15. [ 192.881581][ T7992] ext4_ext_remove_space+0x1dd1/0x4390
  16. [ 192.882278][ T5157]
  17. [ 192.882282][ T5157] RIP: 0010:__stack_depot_save+0x15e/0x510
  18. [ 192.884681][ T7992] ext4_punch_hole+0xe10/0x1040
  19. [ 192.885204][ T5157] Code: 29 c0 89 c3 48 8b 05 b9 cc fc 0d 89 d9 23 0d a9 cc fc 0d 48 8d 0c c8 48 8b 29 48 85 ed 75 0b eb 70 48 8b 6d 00 48 85 ed 74 67 <39> 5d 08 75 f2 44 3b 7d 0c 75 ec 31 c0 48 8b 74 c5 18 49 39 34 c6
  20. [ 192.887164][ T7992] ext4_fallocate+0xe21/0x3c30
  21. [ 192.887791][ T5157] RSP: 0018:ffffc900030d7428 EFLAGS: 00010202
  22. [ 192.888851][ T7992] vfs_fallocate+0x46c/0xe80
  23. [ 192.889161][ T5157]
  24. [ 192.889164][ T5157] RAX: ffff88807e200000 RBX: 00000000ff7b372f RCX: ffff88807e79b978
  25. [ 192.890292][ T7992] ioctl_preallocate+0x1a4/0x220
  26. [ 192.890931][ T5157] RDX: 0000000000000019 RSI: 0000000000000002 RDI: 000000006b2005c7
  27. [ 192.894383][ T7992] do_vfs_ioctl+0x158c/0x1920
  28. [ 192.895027][ T5157] RBP: 00000000ffff8880 R08: 000000009fdbd895 R09: 0000000000000000
  29. [ 192.895838][ T7992] __x64_sys_ioctl+0x112/0x210
  30. [ 192.896458][ T5157] R10: 0000000000000000 R11: ffffffff81004e01 R12: 0000000000000001
  31. [ 192.896773][ T7992] do_syscall_64+0x38/0xb0
  32. [ 192.897831][ T5157] R13: 0000000000000000 R14: ffffc900030d7490 R15: 0000000000000019
  33. [ 192.898487][ T7992] entry_SYSCALL_64_after_hwframe+0x63/0xcd
  34. [ 192.899556][ T5157] FS: 0000000000000000(0000) GS:ffff88807ec00000(0000) knlGS:0000000000000000
  35. [ 192.900178][ T7992]
  36. [ 192.900182][ T7992] CPU: 0 PID: 7992 Comm: syz-executor.5 Not tainted 6.6.0-rc7-syzkaller-00142-g888cf78c29e2 #0
  37. [ 192.901241][ T5157] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  38. [ 192.901878][ T7992] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
  39. [ 192.902948][ T5157] CR2: 00000000ffff8888 CR3: 000000005d805000 CR4: 00000000000006e0
  40. [ 192.903539][ T7992] RIP: 0010:memmove+0x4c/0x1b0
  41. [ 192.904611][ T5157] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  42. [ 192.905399][ T7992] Code: 01 00 00 66 0f 1f 44 00 00 48 81 fa a8 02 00 00 72 05 40 38 fe 74 47 48 83 ea 20 48 83 ea 20 4c 8b 1e 4c 8b 56 08 4c 8b 4e 10 <4c> 8b 46 18 48 8d 76 20 4c 89 1f 4c 89 57 08 4c 89 4f 10 4c 89 47
  43. [ 192.906591][ T5157] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
  44. [ 192.906912][ T7992] RSP: 0018:ffffc900075df800 EFLAGS: 00010286
  45. [ 192.908296][ T5157] Call Trace:
  46. [ 192.908302][ T5157] <TASK>
  47. [ 192.909175][ T7992]
  48. [ 192.909179][ T7992] RAX: ffff88805f82a078 RBX: ffff88805f82a002 RCX: 0000000000000000
  49. [ 192.910541][ T5157] ? show_regs+0x8f/0xa0
  50. [ 192.911608][ T7992] RDX: ffffffffe0e29fe8 RSI: ffff88807e9fffe4 RDI: ffff88807e9fffd8
  51. [ 192.912254][ T5157] ? __die+0x2c/0x80
  52. [ 192.913317][ T7992] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
  53. [ 192.915931][ T5157] ? page_fault_oops+0x398/0xad0
  54. [ 192.916992][ T7992] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88805f82a07c
  55. [ 192.917810][ T5157] ? reacquire_held_locks+0x4b0/0x4b0
  56. [ 192.918252][ T7992] R13: ffff88805dea6000 R14: dffffc0000000000 R15: dffffc0000000000
  57. [ 192.918652][ T5157] ? dump_pagetable+0x530/0x530
  58. [ 192.918974][ T7992] FS: 00007f3d910776c0(0000) GS:ffff88802ca00000(0000) knlGS:0000000000000000
  59. [ 192.920045][ T5157] ? search_extable+0x83/0xb0
  60. [ 192.920614][ T7992] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  61. [ 192.921682][ T5157] ? is_prefetch.constprop.0+0xb6/0x550
  62. [ 192.922206][ T7992] CR2: ffff88807ea00000 CR3: 000000005d805000 CR4: 00000000000006f0
  63. [ 192.923284][ T5157] ? __module_address+0x55/0x3b0
  64. [ 192.923945][ T7992] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  65. [ 192.925010][ T5157] ? bpf_ksym_find+0x124/0x1b0
  66. [ 192.925728][ T7992] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
  67. [ 192.926801][ T5157] ? pgtable_bad+0x80/0x80
  68. [ 192.927450][ T7992] Call Trace:
  69. [ 192.927455][ T7992] <TASK>
  70. [ 192.928654][ T5157] ? fixup_exception+0x110/0xc90
  71. [ 192.929279][ T7992] ? show_regs+0x8f/0xa0
  72. [ 192.930166][ T5157] ? kernelmode_fixup_or_oops+0x23c/0x2b0
  73. [ 192.930907][ T7992] ? kfence_report_error+0x53d/0xd90
  74. [ 192.931983][ T5157] ? __bad_area_nosemaphore+0x390/0x6a0
  75. [ 192.932645][ T7992] ? kfence_print_object+0x310/0x310
  76. [ 192.933717][ T5157] ? ret_from_fork_asm+0x10/0x20
  77. [ 192.934356][ T7992] ? memmove+0x4c/0x1b0
  78. [ 192.935436][ T5157] ? do_user_addr_fault+0x4b9/0x1000
  79. [ 192.936030][ T7992] ? ext4_ext_remove_space+0x1dd1/0x4390
  80. [ 192.936478][ T5157] ? irqentry_enter+0x2c/0x50
  81. [ 192.936873][ T7992] ? ext4_punch_hole+0xe10/0x1040
  82. [ 192.937541][ T5157] ? rcu_is_watching+0x12/0xb0
  83. [ 192.938107][ T7992] ? ext4_fallocate+0xe21/0x3c30
  84. [ 192.938885][ T5157] ? exc_page_fault+0x5c/0xd0
  85. [ 192.939588][ T7992] ? vfs_fallocate+0x46c/0xe80
  86. [ 192.940331][ T5157] ? asm_exc_page_fault+0x26/0x30
  87. [ 192.941034][ T7992] ? ioctl_preallocate+0x1a4/0x220
  88. [ 192.941699][ T5157] ? ret_from_fork_asm+0x11/0x20
  89. [ 192.942253][ T7992] ? do_vfs_ioctl+0x158c/0x1920
  90. [ 192.942975][ T5157] ? __stack_depot_save+0x15e/0x510
  91. [ 192.943722][ T7992] ? __x64_sys_ioctl+0x112/0x210
  92. [ 192.944392][ T5157] ? __stack_depot_save+0x39/0x510
  93. [ 192.945061][ T7992] ? do_syscall_64+0x38/0xb0
  94. [ 192.945709][ T5157] ? kmem_cache_free+0xf0/0x480
  95. [ 192.946369][ T7992] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd
  96. [ 192.947008][ T5157] kasan_save_stack+0x43/0x50
  97. [ 192.947663][ T7992] ? finish_task_switch.isra.0+0x214/0xca0
  98. [ 192.948325][ T5157] ? kasan_save_stack+0x33/0x50
  99. [ 192.949007][ T7992] ? reacquire_held_locks+0x4b0/0x4b0
  100. [ 192.949673][ T5157] ? kasan_set_track+0x25/0x30
  101. [ 192.950321][ T7992] ? find_held_lock+0x2d/0x110
  102. [ 192.951026][ T5157] ? kasan_save_free_info+0x2b/0x40
  103. [ 192.951688][ T7992] ? kfence_handle_page_fault+0x133/0x5b0
  104. [ 192.952384][ T5157] ? ____kasan_slab_free+0x15b/0x1b0
  105. [ 192.953000][ T7992] ? rcu_is_watching+0x12/0xb0
  106. [ 192.953656][ T5157] ? slab_free_freelist_hook+0x114/0x1e0
  107. [ 192.954468][ T7992] ? page_fault_oops+0x66d/0xad0
  108. [ 192.955105][ T5157] ? kmem_cache_free+0xf0/0x480
  109. [ 192.955881][ T7992] ? search_bpf_extables+0x1c7/0x320
  110. [ 192.956537][ T5157] ? kernfs_put.part.0+0x22a/0x490
  111. [ 192.957254][ T7992] ? reacquire_held_locks+0x4b0/0x4b0
  112. [ 192.957900][ T5157] ? kernfs_put+0x47/0x50
  113. [ 192.958538][ T7992] ? dump_pagetable+0x530/0x530
  114. [ 192.959243][ T5157] ? kernfs_remove_by_name_ns+0xbc/0x120
  115. [ 192.960007][ T7992] ? search_extable+0x83/0xb0
  116. [ 192.960716][ T5157] ? remove_files+0x96/0x1c0
  117. [ 192.961353][ T7992] ? is_prefetch.constprop.0+0xb6/0x550
  118. [ 192.962108][ T5157] ? sysfs_remove_group+0x8b/0x170
  119. [ 192.962774][ T7992] ? __module_address+0x55/0x3b0
  120. [ 192.963427][ T5157] ? sysfs_remove_groups+0x60/0xa0
  121. [ 192.964132][ T7992] ? bpf_ksym_find+0x124/0x1b0
  122. [ 192.964820][ T5157] ? __kobject_del+0x83/0x1e0
  123. [ 192.965536][ T7992] ? pgtable_bad+0x80/0x80
  124. [ 192.966119][ T5157] ? kobject_put+0x257/0x440
  125. [ 192.966775][ T7992] ? fixup_exception+0x110/0xc90
  126. [ 192.967532][ T5157] ? netdev_queue_update_kobjects+0x39f/0x520
  127. [ 192.968161][ T7992] ? kernelmode_fixup_or_oops+0x23c/0x2b0
  128. [ 192.968778][ T5157] ? netdev_unregister_kobject+0x169/0x280
  129. [ 192.969522][ T7992] ? __bad_area_nosemaphore+0x390/0x6a0
  130. [ 192.970208][ T5157] ? unregister_netdevice_many_notify+0xc38/0x1980
  131. [ 192.970876][ T7992] ? spurious_kernel_fault+0x2f4/0x3c0
  132. [ 192.971563][ T5157] ? default_device_exit_batch+0x584/0x740
  133. [ 192.972204][ T7992] ? do_kern_addr_fault+0x5b/0x70
  134. [ 192.972833][ T5157] ? ops_exit_list+0x125/0x170
  135. [ 192.973427][ T7992] ? exc_page_fault+0xba/0xd0
  136. [ 192.974048][ T5157] ? cleanup_net+0x505/0xb20
  137. [ 192.974713][ T7992] ? asm_exc_page_fault+0x26/0x30
  138. [ 192.975528][ T5157] ? process_one_work+0x884/0x15c0
  139. [ 192.976295][ T7992] ? memmove+0x4c/0x1b0
  140. [ 192.977072][ T5157] ? worker_thread+0x8b9/0x1290
  141. [ 192.977811][ T7992] ext4_ext_remove_space+0x1dd1/0x4390
  142. [ 192.978689][ T5157] ? kthread+0x33c/0x440
  143. [ 192.979427][ T7992] ? ext4_ext_index_trans_blocks+0x160/0x160
  144. [ 192.980203][ T5157] ? ret_from_fork+0x45/0x80
  145. [ 192.980878][ T7992] ? ext4_es_lookup_extent+0xbe0/0xbe0
  146. [ 192.981519][ T5157] ? ret_from_fork_asm+0x11/0x20
  147. [ 192.982149][ T7992] ? __ext4_journal_start_sb+0x15c/0x5c0
  148. [ 192.982785][ T5157] kasan_set_track+0x25/0x30
  149. [ 192.983447][ T7992] ext4_punch_hole+0xe10/0x1040
  150. [ 192.984135][ T5157] kasan_save_free_info+0x2b/0x40
  151. [ 192.984690][ T7992] ? ext4_inline_data_truncate+0xc20/0xc20
  152. [ 192.985347][ T5157] ____kasan_slab_free+0x15b/0x1b0
  153. [ 192.986078][ T7992] ext4_fallocate+0xe21/0x3c30
  154. [ 192.986648][ T5157] slab_free_freelist_hook+0x114/0x1e0
  155. [ 192.987455][ T7992] ? ext4_ext_truncate+0x2e0/0x2e0
  156. [ 192.988073][ T5157] ? kernfs_put.part.0+0x22a/0x490
  157. [ 192.988802][ T7992] ? ext4_ext_truncate+0x2e0/0x2e0
  158. [ 192.989468][ T5157] kmem_cache_free+0xf0/0x480
  159. [ 192.990219][ T7992] vfs_fallocate+0x46c/0xe80
  160. [ 192.990848][ T5157] kernfs_put.part.0+0x22a/0x490
  161. [ 192.991497][ T7992] ioctl_preallocate+0x1a4/0x220
  162. [ 192.992175][ T5157] kernfs_put+0x47/0x50
  163. [ 192.992949][ T7992] ? fileattr_fill_flags+0x320/0x320
  164. [ 192.993638][ T5157] kernfs_remove_by_name_ns+0xbc/0x120
  165. [ 192.994282][ T7992] do_vfs_ioctl+0x158c/0x1920
  166. [ 192.995016][ T5157] remove_files+0x96/0x1c0
  167. [ 192.995699][ T7992] ? vfs_fileattr_set+0xbf0/0xbf0
  168. [ 192.996390][ T5157] sysfs_remove_group+0x8b/0x170
  169. [ 192.997077][ T7992] ? reacquire_held_locks+0x4b0/0x4b0
  170. [ 192.997706][ T5157] sysfs_remove_groups+0x60/0xa0
  171. [ 192.998320][ T7992] ? sigprocmask+0xf1/0x330
  172. [ 192.998993][ T5157] __kobject_del+0x83/0x1e0
  173. [ 192.999653][ T7992] ? do_sigtimedwait+0x5c0/0x5c0
  174. [ 193.000216][ T5157] kobject_put+0x257/0x440
  175. [ 193.000924][ T7992] ? __fget_files+0x272/0x410
  176. [ 193.001656][ T5157] netdev_queue_update_kobjects+0x39f/0x520
  177. [ 193.002283][ T7992] ? bpf_lsm_file_ioctl+0x9/0x10
  178. [ 193.002890][ T5157] netdev_unregister_kobject+0x169/0x280
  179. [ 193.003559][ T7992] __x64_sys_ioctl+0x112/0x210
  180. [ 193.004228][ T5157] unregister_netdevice_many_notify+0xc38/0x1980
  181. [ 193.004945][ T7992] do_syscall_64+0x38/0xb0
  182. [ 193.005612][ T5157] ? mutex_is_locked+0x12/0x40
  183. [ 193.006217][ T7992] entry_SYSCALL_64_after_hwframe+0x63/0xcd
  184. [ 193.006830][ T5157] ? netdev_freemem+0x60/0x60
  185. [ 193.007491][ T7992] RIP: 0033:0x7f3d9027cae9
  186. [ 193.008090][ T5157] ? unregister_netdevice_many+0x20/0x20
  187. [ 193.008721][ T7992] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
  188. [ 193.009513][ T5157] ? sysfs_remove_group+0xc6/0x170
  189. [ 193.010176][ T7992] RSP: 002b:00007f3d910770c8 EFLAGS: 00000246
  190. [ 193.010938][ T5157] ? br_dev_delete+0x116/0x1a0
  191. [ 193.011575][ T7992] ORIG_RAX: 0000000000000010
  192. [ 193.012427][ T5157] default_device_exit_batch+0x584/0x740
  193. [ 193.013017][ T7992] RAX: ffffffffffffffda RBX: 00007f3d9039c120 RCX: 00007f3d9027cae9
  194. [ 193.013663][ T5157] ? unregister_netdev+0x30/0x30
  195. [ 193.014447][ T7992] RDX: 0000000020000080 RSI: 000000004030582b RDI: 0000000000000004
  196. [ 193.015088][ T5157] ? ib_device_get_by_netdev+0x520/0x520
  197. [ 193.015680][ T7992] RBP: 00007f3d902c847a R08: 0000000000000000 R09: 0000000000000000
  198. [ 193.016440][ T5157] ? preempt_count_sub+0x150/0x150
  199. [ 193.019043][ T7992] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
  200. [ 193.019736][ T5157] ? unregister_netdev+0x30/0x30
  201. [ 193.020544][ T7992] R13: 000000000000006e R14: 00007f3d9039c120 R15: 00007fffb19eb7d8
  202. [ 193.021190][ T5157] ops_exit_list+0x125/0x170
  203. [ 193.021823][ T7992] </TASK>
  204. [ 193.022579][ T5157] cleanup_net+0x505/0xb20
  205. [ 193.023641][ T7992] ==================================================================
  206. [ 193.023649][ T7992] Kernel panic - not syncing: KFENCE: panic_on_warn set ...
  207. [ 193.024310][ T5157] ? unregister_pernet_device+0x80/0x80
  208. [ 193.024331][ T5157] process_one_work+0x884/0x15c0
  209. [ 193.024354][ T5157] ? batadv_nc_process_nc_paths.part.0+0x3e0/0x3e0
  210. [ 193.024379][ T5157] ? init_worker_pool+0x770/0x770
  211. [ 193.024403][ T5157] ? assign_work+0x1a0/0x240
  212. [ 193.024423][ T5157] worker_thread+0x8b9/0x1290
  213. [ 193.024447][ T5157] ? __kthread_parkme+0x14b/0x220
  214. [ 193.024464][ T5157] ? process_one_work+0x15c0/0x15c0
  215. [ 193.024484][ T5157] kthread+0x33c/0x440
  216. [ 193.024501][ T5157] ? _raw_spin_unlock_irq+0x23/0x50
  217. [ 193.024521][ T5157] ? kthread_complete_and_exit+0x40/0x40
  218. [ 193.024541][ T5157] ret_from_fork+0x45/0x80
  219. [ 193.024559][ T5157] ? kthread_complete_and_exit+0x40/0x40
  220. [ 193.024579][ T5157] ret_from_fork_asm+0x11/0x20
  221. [ 193.024607][ T5157] </TASK>
  222. [ 193.024612][ T5157] Modules linked in:
  223. [ 193.024625][ T5157] CR2: 00000000ffff8888
  224. [ 193.024635][ T5157] ---[ end trace 0000000000000000 ]---
  225. [ 193.024641][ T5157] RIP: 0010:__stack_depot_save+0x15e/0x510
  226. [ 193.024664][ T5157] Code: 29 c0 89 c3 48 8b 05 b9 cc fc 0d 89 d9 23 0d a9 cc fc 0d 48 8d 0c c8 48 8b 29 48 85 ed 75 0b eb 70 48 8b 6d 00 48 85 ed 74 67 <39> 5d 08 75 f2 44 3b 7d 0c 75 ec 31 c0 48 8b 74 c5 18 49 39 34 c6
  227. [ 193.024681][ T5157] RSP: 0018:ffffc900030d7428 EFLAGS: 00010202
  228. [ 193.024693][ T5157] RAX: ffff88807e200000 RBX: 00000000ff7b372f RCX: ffff88807e79b978
  229. [ 193.024705][ T5157] RDX: 0000000000000019 RSI: 0000000000000002 RDI: 000000006b2005c7
  230. [ 193.024715][ T5157] RBP: 00000000ffff8880 R08: 000000009fdbd895 R09: 0000000000000000
  231. [ 193.024725][ T5157] R10: 0000000000000000 R11: ffffffff81004e01 R12: 0000000000000001
  232. [ 193.024736][ T5157] R13: 0000000000000000 R14: ffffc900030d7490 R15: 0000000000000019
  233. [ 193.024747][ T5157] FS: 0000000000000000(0000) GS:ffff88807ec00000(0000) knlGS:0000000000000000
  234. [ 193.024763][ T5157] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  235. [ 193.024775][ T5157] CR2: 00000000ffff8888 CR3: 000000005d805000 CR4: 00000000000006e0
  236. [ 193.024785][ T5157] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  237. [ 193.024796][ T5157] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
  238. [ 194.093833][ T7992] Shutting down cpus with NMI
  239. [ 194.132134][ T7992] Kernel Offset: disabled
  240. [ 194.132732][ T7992] Rebooting in 86400 seconds..
  241.  
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