533][ T6086] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcdf6e4c30
[  452.709538][ T6086] R13: 00007f91c5c3445c R14: 000000000006e7d9 R15: 00007ffcdf6e4c70
[  452.709551][ T6086]  </TASK>
[  452.709556][ T6086] F2FS-fs (loop0): Stopped filesystem due to reason: 3
[  452.837709][T11272] loop2: detected capacity change from 0 to 40427
[  452.874214][T11272] F2FS-fs (loop2): Small segment_count (9 < 1 * 24)
[  452.887067][T11272] F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock
[  452.958741][T11272] F2FS-fs (loop2): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  452.984375][T11272] F2FS-fs (loop2): Try to recover 1th superblock, ret: 0
[  452.986627][T11272] F2FS-fs (loop2): Mounted with checkpoint version = 48b305e5
[  453.031300][ T6092] CPU: 0 UID: 0 PID: 6092 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  453.031318][ T6092] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  453.031324][ T6092] Call Trace:
[  453.031329][ T6092]  <TASK>
[  453.031334][ T6092]  dump_stack_lvl+0xe8/0x150
[  453.031354][ T6092]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  453.031370][ T6092]  f2fs_write_end_io+0x124b/0x1710
[  453.031393][ T6092]  __submit_merged_bio+0x258/0x6a0
[  453.031403][ T6092]  ? rcu_is_watching+0x15/0xb0
[  453.031424][ T6092]  __submit_merged_write_cond+0x3c9/0x4e0
[  453.031443][ T6092]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  453.031470][ T6092]  f2fs_write_data_pages+0x2a27/0x36f0
[  453.031496][ T6092]  ? __lock_acquire+0x683/0x2cf0
[  453.031523][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  453.031553][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  453.031560][ T6092]  ? __bfs+0x153/0x290
[  453.031571][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  453.031586][ T6092]  ? lockdep_unlock+0x5d/0xd0
[  453.031595][ T6092]  ? __lock_acquire+0x13e8/0x2cf0
[  453.031617][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  453.031629][ T6092]  do_writepages+0x338/0x560
[  453.031647][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  453.031658][ T6092]  filemap_fdatawrite+0x1e9/0x2f0
[  453.031672][ T6092]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  453.031702][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  453.031713][ T6092]  f2fs_sync_dirty_inodes+0x30e/0x830
[  453.031733][ T6092]  f2fs_write_checkpoint+0xa3d/0x2710
[  453.031759][ T6092]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  453.031793][ T6092]  kill_f2fs_super+0x2dd/0x700
[  453.031809][ T6092]  ? __pfx_kill_f2fs_super+0x10/0x10
[  453.031826][ T6092]  ? call_rcu+0x64b/0x8b0
[  453.031833][ T6092]  ? lockdep_hardirqs_on+0x7a/0x110
[  453.031850][ T6092]  deactivate_locked_super+0xbc/0x110
[  453.031865][ T6092]  cleanup_mnt+0x3d3/0x460
[  453.031930][ T6092]  task_work_run+0x1d9/0x270
[  453.031945][ T6092]  ? __pfx_task_work_run+0x10/0x10
[  453.031962][ T6092]  exit_to_user_mode_loop+0x1fa/0x730
[  453.031974][ T6092]  ? rcu_is_watching+0x15/0xb0
[  453.031989][ T6092]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  453.031999][ T6092]  do_syscall_64+0x353/0x580
[  453.032009][ T6092]  ? trace_irq_disable+0x3b/0x140
[  453.032023][ T6092]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  453.032032][ T6092] RIP: 0033:0x7f835259f257
[  453.032042][ T6092] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  453.032051][ T6092] RSP: 002b:00007fffacbabcb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  453.032062][ T6092] RAX: 0000000000000000 RBX: 00007f835263445c RCX: 00007f835259f257
[  453.032068][ T6092] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffacbabd70
[  453.032073][ T6092] RBP: 00007fffacbabd70 R08: 00007fffacbacd70 R09: 00000000ffffffff
[  453.032079][ T6092] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffacbace00
[  453.032084][ T6092] R13: 00007f835263445c R14: 000000000006e911 R15: 00007fffacbace40
[  453.032097][ T6092]  </TASK>
[  453.035415][ T6092] F2FS-fs (loop2): Stopped filesystem due to reason: 3
[  453.087180][T11276] loop1: detected capacity change from 0 to 40427
[  453.150527][T11276] F2FS-fs (loop1): Small segment_count (9 < 1 * 24)
[  453.153180][T11276] F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock
[  453.267711][T11276] F2FS-fs (loop1): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  453.282146][T11276] F2FS-fs (loop1): Try to recover 1th superblock, ret: 0
[  453.290490][T11276] F2FS-fs (loop1): Mounted with checkpoint version = 48b305e5
[  453.330910][ T6087] CPU: 1 UID: 0 PID: 6087 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  453.330928][ T6087] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  453.330934][ T6087] Call Trace:
[  453.330939][ T6087]  <TASK>
[  453.330943][ T6087]  dump_stack_lvl+0xe8/0x150
[  453.330962][ T6087]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  453.330978][ T6087]  f2fs_write_end_io+0x124b/0x1710
[  453.331001][ T6087]  __submit_merged_bio+0x258/0x6a0
[  453.331011][ T6087]  ? rcu_is_watching+0x15/0xb0
[  453.331029][ T6087]  __submit_merged_write_cond+0x3c9/0x4e0
[  453.331043][ T6087]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  453.331063][ T6087]  f2fs_write_data_pages+0x2a27/0x36f0
[  453.331075][ T6087]  ? __lock_acquire+0x683/0x2cf0
[  453.331101][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  453.331131][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  453.331139][ T6087]  ? __bfs+0x153/0x290
[  453.331149][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  453.331163][ T6087]  ? lockdep_unlock+0x5d/0xd0
[  453.331173][ T6087]  ? __lock_acquire+0x13e8/0x2cf0
[  453.331194][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  453.331206][ T6087]  do_writepages+0x338/0x560
[  453.331223][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  453.331235][ T6087]  filemap_fdatawrite+0x1e9/0x2f0
[  453.331250][ T6087]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  453.331279][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  453.331290][ T6087]  f2fs_sync_dirty_inodes+0x30e/0x830
[  453.331309][ T6087]  f2fs_write_checkpoint+0xa3d/0x2710
[  453.331334][ T6087]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  453.331368][ T6087]  kill_f2fs_super+0x2dd/0x700
[  453.331385][ T6087]  ? __pfx_kill_f2fs_super+0x10/0x10
[  453.331401][ T6087]  ? call_rcu+0x64b/0x8b0
[  453.331409][ T6087]  ? lockdep_hardirqs_on+0x7a/0x110
[  453.331426][ T6087]  deactivate_locked_super+0xbc/0x110
[  453.331440][ T6087]  cleanup_mnt+0x3d3/0x460
[  453.331452][ T6087]  task_work_run+0x1d9/0x270
[  453.331467][ T6087]  ? __pfx_task_work_run+0x10/0x10
[  453.331483][ T6087]  exit_to_user_mode_loop+0x1fa/0x730
[  453.331495][ T6087]  ? rcu_is_watching+0x15/0xb0
[  453.331507][ T6087]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  453.331532][ T6087]  do_syscall_64+0x353/0x580
[  453.331543][ T6087]  ? trace_irq_disable+0x3b/0x140
[  453.331557][ T6087]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  453.331566][ T6087] RIP: 0033:0x7fbe5c39f257
[  453.331575][ T6087] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  453.331583][ T6087] RSP: 002b:00007ffd72651a58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  453.331594][ T6087] RAX: 0000000000000000 RBX: 00007fbe5c43445c RCX: 00007fbe5c39f257
[  453.331600][ T6087] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd72651b10
[  453.331605][ T6087] RBP: 00007ffd72651b10 R08: 00007ffd72652b10 R09: 00000000ffffffff
[  453.331610][ T6087] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd72652ba0
[  453.331616][ T6087] R13: 00007fbe5c43445c R14: 000000000006ea34 R15: 00007ffd72652be0
[  453.331629][ T6087]  </TASK>
[  453.333164][ T6087] F2FS-fs (loop1): Stopped filesystem due to reason: 3
[  453.464574][T11284] loop2: detected capacity change from 0 to 40427
[  453.470602][T11284] F2FS-fs (loop2): Small segment_count (9 < 1 * 24)
[  453.491717][T11284] F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock
[  453.492965][T11280] F2FS-fs (loop0): Small segment_count (9 < 1 * 24)
[  453.496318][T11280] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
[  453.552082][T11280] F2FS-fs (loop0): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  453.561220][T11284] F2FS-fs (loop2): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  453.565471][T11280] F2FS-fs (loop0): Try to recover 1th superblock, ret: 0
[  453.566105][T11284] F2FS-fs (loop2): Try to recover 1th superblock, ret: 0
[  453.569799][T11284] F2FS-fs (loop2): Mounted with checkpoint version = 48b305e5
[  453.570430][T11280] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5
[  453.596708][ T6092] CPU: 0 UID: 0 PID: 6092 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  453.596723][ T6092] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  453.596730][ T6092] Call Trace:
[  453.596734][ T6092]  <TASK>
[  453.596739][ T6092]  dump_stack_lvl+0xe8/0x150
[  453.596759][ T6092]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  453.596776][ T6092]  f2fs_write_end_io+0x124b/0x1710
[  453.596799][ T6092]  __submit_merged_bio+0x258/0x6a0
[  453.596810][ T6092]  ? rcu_is_watching+0x15/0xb0
[  453.596827][ T6092]  __submit_merged_write_cond+0x3c9/0x4e0
[  453.596842][ T6092]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  453.596893][ T6092]  f2fs_write_data_pages+0x2a27/0x36f0
[  453.596924][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  453.596957][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  453.596966][ T6092]  ? __bfs+0x153/0x290
[  453.596978][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  453.596994][ T6092]  ? lockdep_unlock+0x5d/0xd0
[  453.597003][ T6092]  ? __lock_acquire+0x13e8/0x2cf0
[  453.597027][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  453.597039][ T6092]  do_writepages+0x338/0x560
[  453.597075][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  453.597087][ T6092]  filemap_fdatawrite+0x1e9/0x2f0
[  453.597102][ T6092]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  453.597134][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  453.597145][ T6092]  f2fs_sync_dirty_inodes+0x30e/0x830
[  453.597166][ T6092]  f2fs_write_checkpoint+0xa3d/0x2710
[  453.597194][ T6092]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  453.597231][ T6092]  kill_f2fs_super+0x2dd/0x700
[  453.597248][ T6092]  ? __pfx_kill_f2fs_super+0x10/0x10
[  453.597265][ T6092]  ? call_rcu+0x64b/0x8b0
[  453.597273][ T6092]  ? lockdep_hardirqs_on+0x7a/0x110
[  453.597290][ T6092]  deactivate_locked_super+0xbc/0x110
[  453.597305][ T6092]  cleanup_mnt+0x3d3/0x460
[  453.597317][ T6092]  task_work_run+0x1d9/0x270
[  453.597333][ T6092]  ? __pfx_task_work_run+0x10/0x10
[  453.597351][ T6092]  exit_to_user_mode_loop+0x1fa/0x730
[  453.597363][ T6092]  ? rcu_is_watching+0x15/0xb0
[  453.597376][ T6092]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  453.597386][ T6092]  do_syscall_64+0x353/0x580
[  453.597396][ T6092]  ? trace_irq_disable+0x3b/0x140
[  453.597411][ T6092]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  453.597419][ T6092] RIP: 0033:0x7f835259f257
[  453.597429][ T6092] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  453.597436][ T6092] RSP: 002b:00007fffacbabcb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  453.597447][ T6092] RAX: 0000000000000000 RBX: 00007f835263445c RCX: 00007f835259f257
[  453.597452][ T6092] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffacbabd70
[  453.597458][ T6092] RBP: 00007fffacbabd70 R08: 00007fffacbacd70 R09: 00000000ffffffff
[  453.597463][ T6092] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffacbace00
[  453.597469][ T6092] R13: 00007f835263445c R14: 000000000006ea38 R15: 00007fffacbace40
[  453.597483][ T6092]  </TASK>
[  453.624148][ T6092] F2FS-fs (loop2): Stopped filesystem due to reason: 3
[  453.712519][ T6086] CPU: 1 UID: 0 PID: 6086 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  453.712534][ T6086] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  453.712540][ T6086] Call Trace:
[  453.712546][ T6086]  <TASK>
[  453.712551][ T6086]  dump_stack_lvl+0xe8/0x150
[  453.712571][ T6086]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  453.712587][ T6086]  f2fs_write_end_io+0x124b/0x1710
[  453.712610][ T6086]  __submit_merged_bio+0x258/0x6a0
[  453.712620][ T6086]  ? rcu_is_watching+0x15/0xb0
[  453.712637][ T6086]  __submit_merged_write_cond+0x3c9/0x4e0
[  453.712651][ T6086]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  453.712671][ T6086]  f2fs_write_data_pages+0x2a27/0x36f0
[  453.712698][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  453.712727][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  453.712735][ T6086]  ? __bfs+0x153/0x290
[  453.712747][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  453.712761][ T6086]  ? lockdep_unlock+0x5d/0xd0
[  453.712770][ T6086]  ? __lock_acquire+0x13e8/0x2cf0
[  453.712792][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  453.712804][ T6086]  do_writepages+0x338/0x560
[  453.712821][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  453.712833][ T6086]  filemap_fdatawrite+0x1e9/0x2f0
[  453.712878][ T6086]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  453.712909][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  453.712920][ T6086]  f2fs_sync_dirty_inodes+0x30e/0x830
[  453.712940][ T6086]  f2fs_write_checkpoint+0xa3d/0x2710
[  453.712966][ T6086]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  453.713000][ T6086]  kill_f2fs_super+0x2dd/0x700
[  453.713017][ T6086]  ? __pfx_kill_f2fs_super+0x10/0x10
[  453.713048][ T6086]  ? call_rcu+0x64b/0x8b0
[  453.713056][ T6086]  ? lockdep_hardirqs_on+0x7a/0x110
[  453.713073][ T6086]  deactivate_locked_super+0xbc/0x110
[  453.713088][ T6086]  cleanup_mnt+0x3d3/0x460
[  453.713100][ T6086]  task_work_run+0x1d9/0x270
[  453.713115][ T6086]  ? __pfx_task_work_run+0x10/0x10
[  453.713132][ T6086]  exit_to_user_mode_loop+0x1fa/0x730
[  453.713144][ T6086]  ? rcu_is_watching+0x15/0xb0
[  453.713157][ T6086]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  453.713166][ T6086]  do_syscall_64+0x353/0x580
[  453.713176][ T6086]  ? trace_irq_disable+0x3b/0x140
[  453.713192][ T6086]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  453.713200][ T6086] RIP: 0033:0x7f91c5b9f257
[  453.713210][ T6086] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  453.713218][ T6086] RSP: 002b:00007ffcdf6e3ae8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  453.713228][ T6086] RAX: 0000000000000000 RBX: 00007f91c5c3445c RCX: 00007f91c5b9f257
[  453.713235][ T6086] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcdf6e3ba0
[  453.713240][ T6086] RBP: 00007ffcdf6e3ba0 R08: 00007ffcdf6e4ba0 R09: 00000000ffffffff
[  453.713245][ T6086] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcdf6e4c30
[  453.713250][ T6086] R13: 00007f91c5c3445c R14: 000000000006ebc6 R15: 00007ffcdf6e4c70
[  453.713264][ T6086]  </TASK>
[  453.713268][ T6086] F2FS-fs (loop0): Stopped filesystem due to reason: 3
[  453.922969][T11290] F2FS-fs (loop1): Small segment_count (9 < 1 * 24)
[  453.932893][T11290] F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock
[  453.975257][T11290] F2FS-fs (loop1): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  453.992898][T11290] F2FS-fs (loop1): Try to recover 1th superblock, ret: 0
[  453.995184][T11290] F2FS-fs (loop1): Mounted with checkpoint version = 48b305e5
[  454.012119][ T6087] CPU: 0 UID: 0 PID: 6087 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  454.012136][ T6087] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  454.012142][ T6087] Call Trace:
[  454.012147][ T6087]  <TASK>
[  454.012152][ T6087]  dump_stack_lvl+0xe8/0x150
[  454.012172][ T6087]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  454.012189][ T6087]  f2fs_write_end_io+0x124b/0x1710
[  454.012212][ T6087]  __submit_merged_bio+0x258/0x6a0
[  454.012223][ T6087]  ? rcu_is_watching+0x15/0xb0
[  454.012241][ T6087]  __submit_merged_write_cond+0x3c9/0x4e0
[  454.012256][ T6087]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  454.012277][ T6087]  f2fs_write_data_pages+0x2a27/0x36f0
[  454.012306][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  454.012340][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  454.012348][ T6087]  ? __bfs+0x153/0x290
[  454.012359][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  454.012375][ T6087]  ? lockdep_unlock+0x5d/0xd0
[  454.012384][ T6087]  ? __lock_acquire+0x13e8/0x2cf0
[  454.012407][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  454.012420][ T6087]  do_writepages+0x338/0x560
[  454.012438][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  454.012450][ T6087]  filemap_fdatawrite+0x1e9/0x2f0
[  454.012465][ T6087]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  454.012525][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  454.012538][ T6087]  f2fs_sync_dirty_inodes+0x30e/0x830
[  454.012559][ T6087]  f2fs_write_checkpoint+0xa3d/0x2710
[  454.012586][ T6087]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  454.012623][ T6087]  kill_f2fs_super+0x2dd/0x700
[  454.012640][ T6087]  ? __pfx_kill_f2fs_super+0x10/0x10
[  454.012657][ T6087]  ? call_rcu+0x64b/0x8b0
[  454.012665][ T6087]  ? lockdep_hardirqs_on+0x7a/0x110
[  454.012683][ T6087]  deactivate_locked_super+0xbc/0x110
[  454.012698][ T6087]  cleanup_mnt+0x3d3/0x460
[  454.012709][ T6087]  task_work_run+0x1d9/0x270
[  454.012726][ T6087]  ? __pfx_task_work_run+0x10/0x10
[  454.012743][ T6087]  exit_to_user_mode_loop+0x1fa/0x730
[  454.012755][ T6087]  ? rcu_is_watching+0x15/0xb0
[  454.012768][ T6087]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  454.012777][ T6087]  do_syscall_64+0x353/0x580
[  454.012788][ T6087]  ? trace_irq_disable+0x3b/0x140
[  454.012803][ T6087]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  454.012811][ T6087] RIP: 0033:0x7fbe5c39f257
[  454.012822][ T6087] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  454.012855][ T6087] RSP: 002b:00007ffd72651a58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  454.012865][ T6087] RAX: 0000000000000000 RBX: 00007fbe5c43445c RCX: 00007fbe5c39f257
[  454.012871][ T6087] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd72651b10
[  454.012877][ T6087] RBP: 00007ffd72651b10 R08: 00007ffd72652b10 R09: 00000000ffffffff
[  454.012882][ T6087] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd72652ba0
[  454.012887][ T6087] R13: 00007fbe5c43445c R14: 000000000006ecf3 R15: 00007ffd72652be0
[  454.012902][ T6087]  </TASK>
[  454.013690][ T6087] F2FS-fs (loop1): Stopped filesystem due to reason: 3
2026/08/02 08:15:03 executed programs: 1250
[  454.240142][T11295] F2FS-fs (loop0): Small segment_count (9 < 1 * 24)
[  454.245456][T11295] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
[  454.293215][T11295] F2FS-fs (loop0): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  454.303289][T11295] F2FS-fs (loop0): Try to recover 1th superblock, ret: 0
[  454.306969][T11295] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5
[  454.327751][ T6086] CPU: 1 UID: 0 PID: 6086 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  454.327768][ T6086] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  454.327774][ T6086] Call Trace:
[  454.327779][ T6086]  <TASK>
[  454.327784][ T6086]  dump_stack_lvl+0xe8/0x150
[  454.327842][ T6086]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  454.327865][ T6086]  f2fs_write_end_io+0x124b/0x1710
[  454.327888][ T6086]  __submit_merged_bio+0x258/0x6a0
[  454.327898][ T6086]  ? rcu_is_watching+0x15/0xb0
[  454.327916][ T6086]  __submit_merged_write_cond+0x3c9/0x4e0
[  454.327930][ T6086]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  454.327950][ T6086]  f2fs_write_data_pages+0x2a27/0x36f0
[  454.327976][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  454.328005][ T6086]  ? wakeup_preempt_fair+0xc7/0xb10
[  454.328019][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  454.328027][ T6086]  ? __bfs+0x153/0x290
[  454.328038][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  454.328053][ T6086]  ? lockdep_unlock+0x5d/0xd0
[  454.328062][ T6086]  ? __lock_acquire+0x13e8/0x2cf0
[  454.328084][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  454.328096][ T6086]  do_writepages+0x338/0x560
[  454.328114][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  454.328124][ T6086]  filemap_fdatawrite+0x1e9/0x2f0
[  454.328139][ T6086]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  454.328169][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  454.328180][ T6086]  f2fs_sync_dirty_inodes+0x30e/0x830
[  454.328199][ T6086]  f2fs_write_checkpoint+0xa3d/0x2710
[  454.328225][ T6086]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  454.328259][ T6086]  kill_f2fs_super+0x2dd/0x700
[  454.328275][ T6086]  ? __pfx_kill_f2fs_super+0x10/0x10
[  454.328292][ T6086]  ? call_rcu+0x64b/0x8b0
[  454.328300][ T6086]  ? lockdep_hardirqs_on+0x7a/0x110
[  454.328317][ T6086]  deactivate_locked_super+0xbc/0x110
[  454.328331][ T6086]  cleanup_mnt+0x3d3/0x460
[  454.328348][ T6086]  task_work_run+0x1d9/0x270
[  454.328363][ T6086]  ? __pfx_task_work_run+0x10/0x10
[  454.328380][ T6086]  exit_to_user_mode_loop+0x1fa/0x730
[  454.328392][ T6086]  ? rcu_is_watching+0x15/0xb0
[  454.328404][ T6086]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  454.328414][ T6086]  do_syscall_64+0x353/0x580
[  454.328424][ T6086]  ? trace_irq_disable+0x3b/0x140
[  454.328439][ T6086]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  454.328448][ T6086] RIP: 0033:0x7f91c5b9f257
[  454.328457][ T6086] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  454.328466][ T6086] RSP: 002b:00007ffcdf6e3ae8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  454.328476][ T6086] RAX: 0000000000000000 RBX: 00007f91c5c3445c RCX: 00007f91c5b9f257
[  454.328482][ T6086] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcdf6e3ba0
[  454.328488][ T6086] RBP: 00007ffcdf6e3ba0 R08: 00007ffcdf6e4ba0 R09: 00000000ffffffff
[  454.328494][ T6086] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcdf6e4c30
[  454.328499][ T6086] R13: 00007f91c5c3445c R14: 000000000006ee27 R15: 00007ffcdf6e4c70
[  454.328512][ T6086]  </TASK>
[  454.328517][ T6086] F2FS-fs (loop0): Stopped filesystem due to reason: 3
[  454.333313][T11296] F2FS-fs (loop2): Small segment_count (9 < 1 * 24)
[  454.435700][T11296] F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock
[  454.491681][T11296] F2FS-fs (loop2): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  454.498190][T11296] F2FS-fs (loop2): Try to recover 1th superblock, ret: 0
[  454.500512][T11296] F2FS-fs (loop2): Mounted with checkpoint version = 48b305e5
[  454.516098][ T6092] CPU: 1 UID: 0 PID: 6092 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  454.516114][ T6092] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  454.516120][ T6092] Call Trace:
[  454.516125][ T6092]  <TASK>
[  454.516130][ T6092]  dump_stack_lvl+0xe8/0x150
[  454.516149][ T6092]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  454.516165][ T6092]  f2fs_write_end_io+0x124b/0x1710
[  454.516211][ T6092]  __submit_merged_bio+0x258/0x6a0
[  454.516221][ T6092]  ? rcu_is_watching+0x15/0xb0
[  454.516239][ T6092]  __submit_merged_write_cond+0x3c9/0x4e0
[  454.516254][ T6092]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  454.516275][ T6092]  f2fs_write_data_pages+0x2a27/0x36f0
[  454.516287][ T6092]  ? __lock_acquire+0x683/0x2cf0
[  454.516315][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  454.516353][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  454.516361][ T6092]  ? __bfs+0x153/0x290
[  454.516371][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  454.516387][ T6092]  ? lockdep_unlock+0x5d/0xd0
[  454.516396][ T6092]  ? __lock_acquire+0x13e8/0x2cf0
[  454.516419][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  454.516431][ T6092]  do_writepages+0x338/0x560
[  454.516449][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  454.516461][ T6092]  filemap_fdatawrite+0x1e9/0x2f0
[  454.516476][ T6092]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  454.516508][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  454.516519][ T6092]  f2fs_sync_dirty_inodes+0x30e/0x830
[  454.516539][ T6092]  f2fs_write_checkpoint+0xa3d/0x2710
[  454.516567][ T6092]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  454.516603][ T6092]  kill_f2fs_super+0x2dd/0x700
[  454.516620][ T6092]  ? __pfx_kill_f2fs_super+0x10/0x10
[  454.516638][ T6092]  ? call_rcu+0x64b/0x8b0
[  454.516646][ T6092]  ? lockdep_hardirqs_on+0x7a/0x110
[  454.516664][ T6092]  deactivate_locked_super+0xbc/0x110
[  454.516680][ T6092]  cleanup_mnt+0x3d3/0x460
[  454.516692][ T6092]  task_work_run+0x1d9/0x270
[  454.516707][ T6092]  ? __pfx_task_work_run+0x10/0x10
[  454.516724][ T6092]  exit_to_user_mode_loop+0x1fa/0x730
[  454.516736][ T6092]  ? rcu_is_watching+0x15/0xb0
[  454.516749][ T6092]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  454.516759][ T6092]  do_syscall_64+0x353/0x580
[  454.516769][ T6092]  ? trace_irq_disable+0x3b/0x140
[  454.516785][ T6092]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  454.516816][ T6092] RIP: 0033:0x7f835259f257
[  454.516827][ T6092] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  454.516834][ T6092] RSP: 002b:00007fffacbabcb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  454.516845][ T6092] RAX: 0000000000000000 RBX: 00007f835263445c RCX: 00007f835259f257
[  454.516851][ T6092] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffacbabd70
[  454.516856][ T6092] RBP: 00007fffacbabd70 R08: 00007fffacbacd70 R09: 00000000ffffffff
[  454.516862][ T6092] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffacbace00
[  454.516867][ T6092] R13: 00007f835263445c R14: 000000000006eee5 R15: 00007fffacbace40
[  454.516881][ T6092]  </TASK>
[  454.520693][ T6092] F2FS-fs (loop2): Stopped filesystem due to reason: 3
[  454.642904][T11300] F2FS-fs (loop1): Small segment_count (9 < 1 * 24)
[  454.646474][T11300] F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock
[  454.718318][T11300] F2FS-fs (loop1): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  454.729563][T11300] F2FS-fs (loop1): Try to recover 1th superblock, ret: 0
[  454.733915][T11300] F2FS-fs (loop1): Mounted with checkpoint version = 48b305e5
[  454.760116][ T6087] CPU: 1 UID: 0 PID: 6087 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  454.760131][ T6087] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  454.760138][ T6087] Call Trace:
[  454.760142][ T6087]  <TASK>
[  454.760147][ T6087]  dump_stack_lvl+0xe8/0x150
[  454.760166][ T6087]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  454.760182][ T6087]  f2fs_write_end_io+0x124b/0x1710
[  454.760205][ T6087]  __submit_merged_bio+0x258/0x6a0
[  454.760216][ T6087]  ? rcu_is_watching+0x15/0xb0
[  454.760234][ T6087]  __submit_merged_write_cond+0x3c9/0x4e0
[  454.760248][ T6087]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  454.760269][ T6087]  f2fs_write_data_pages+0x2a27/0x36f0
[  454.760281][ T6087]  ? __lock_acquire+0x683/0x2cf0
[  454.760309][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  454.760361][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  454.760370][ T6087]  ? __bfs+0x153/0x290
[  454.760381][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  454.760396][ T6087]  ? lockdep_unlock+0x5d/0xd0
[  454.760406][ T6087]  ? __lock_acquire+0x13e8/0x2cf0
[  454.760429][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  454.760441][ T6087]  do_writepages+0x338/0x560
[  454.760459][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  454.760471][ T6087]  filemap_fdatawrite+0x1e9/0x2f0
[  454.760485][ T6087]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  454.760517][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  454.760528][ T6087]  f2fs_sync_dirty_inodes+0x30e/0x830
[  454.760548][ T6087]  f2fs_write_checkpoint+0xa3d/0x2710
[  454.760576][ T6087]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  454.760612][ T6087]  kill_f2fs_super+0x2dd/0x700
[  454.760629][ T6087]  ? __pfx_kill_f2fs_super+0x10/0x10
[  454.760647][ T6087]  ? call_rcu+0x64b/0x8b0
[  454.760655][ T6087]  ? lockdep_hardirqs_on+0x7a/0x110
[  454.760673][ T6087]  deactivate_locked_super+0xbc/0x110
[  454.760688][ T6087]  cleanup_mnt+0x3d3/0x460
[  454.760700][ T6087]  task_work_run+0x1d9/0x270
[  454.760716][ T6087]  ? __pfx_task_work_run+0x10/0x10
[  454.760733][ T6087]  exit_to_user_mode_loop+0x1fa/0x730
[  454.760745][ T6087]  ? rcu_is_watching+0x15/0xb0
[  454.760758][ T6087]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  454.760768][ T6087]  do_syscall_64+0x353/0x580
[  454.760802][ T6087]  ? trace_irq_disable+0x3b/0x140
[  454.760824][ T6087]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  454.760832][ T6087] RIP: 0033:0x7fbe5c39f257
[  454.760842][ T6087] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  454.760850][ T6087] RSP: 002b:00007ffd72651a58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  454.760860][ T6087] RAX: 0000000000000000 RBX: 00007fbe5c43445c RCX: 00007fbe5c39f257
[  454.760866][ T6087] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd72651b10
[  454.760871][ T6087] RBP: 00007ffd72651b10 R08: 00007ffd72652b10 R09: 00000000ffffffff
[  454.760877][ T6087] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd72652ba0
[  454.760882][ T6087] R13: 00007fbe5c43445c R14: 000000000006efdc R15: 00007ffd72652be0
[  454.760896][ T6087]  </TASK>
[  454.956830][T11304] F2FS-fs (loop0): Small segment_count (9 < 1 * 24)
[  454.958981][T11304] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
[  454.963021][ T6087] F2FS-fs (loop1): Stopped filesystem due to reason: 3
[  454.998549][T11304] F2FS-fs (loop0): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  455.006684][T11304] F2FS-fs (loop0): Try to recover 1th superblock, ret: 0
[  455.008998][T11304] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5
[  455.024205][ T6086] CPU: 1 UID: 0 PID: 6086 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  455.024222][ T6086] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  455.024228][ T6086] Call Trace:
[  455.024233][ T6086]  <TASK>
[  455.024238][ T6086]  dump_stack_lvl+0xe8/0x150
[  455.024257][ T6086]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  455.024273][ T6086]  f2fs_write_end_io+0x124b/0x1710
[  455.024300][ T6086]  __submit_merged_bio+0x258/0x6a0
[  455.024310][ T6086]  ? rcu_is_watching+0x15/0xb0
[  455.024328][ T6086]  __submit_merged_write_cond+0x3c9/0x4e0
[  455.024363][ T6086]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  455.024386][ T6086]  f2fs_write_data_pages+0x2a27/0x36f0
[  455.024415][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  455.024447][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  455.024455][ T6086]  ? __bfs+0x153/0x290
[  455.024467][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  455.024482][ T6086]  ? lockdep_unlock+0x5d/0xd0
[  455.024491][ T6086]  ? __lock_acquire+0x13e8/0x2cf0
[  455.024515][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  455.024527][ T6086]  do_writepages+0x338/0x560
[  455.024545][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  455.024557][ T6086]  filemap_fdatawrite+0x1e9/0x2f0
[  455.024571][ T6086]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  455.024603][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  455.024614][ T6086]  f2fs_sync_dirty_inodes+0x30e/0x830
[  455.024634][ T6086]  f2fs_write_checkpoint+0xa3d/0x2710
[  455.024661][ T6086]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  455.024698][ T6086]  kill_f2fs_super+0x2dd/0x700
[  455.024714][ T6086]  ? __pfx_kill_f2fs_super+0x10/0x10
[  455.024732][ T6086]  ? call_rcu+0x64b/0x8b0
[  455.024739][ T6086]  ? lockdep_hardirqs_on+0x7a/0x110
[  455.024777][ T6086]  deactivate_locked_super+0xbc/0x110
[  455.024799][ T6086]  cleanup_mnt+0x3d3/0x460
[  455.024811][ T6086]  task_work_run+0x1d9/0x270
[  455.024827][ T6086]  ? __pfx_task_work_run+0x10/0x10
[  455.024844][ T6086]  exit_to_user_mode_loop+0x1fa/0x730
[  455.024856][ T6086]  ? rcu_is_watching+0x15/0xb0
[  455.024869][ T6086]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  455.024878][ T6086]  do_syscall_64+0x353/0x580
[  455.024889][ T6086]  ? trace_irq_disable+0x3b/0x140
[  455.024904][ T6086]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  455.024912][ T6086] RIP: 0033:0x7f91c5b9f257
[  455.024922][ T6086] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  455.024930][ T6086] RSP: 002b:00007ffcdf6e3ae8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  455.024940][ T6086] RAX: 0000000000000000 RBX: 00007f91c5c3445c RCX: 00007f91c5b9f257
[  455.024946][ T6086] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcdf6e3ba0
[  455.024951][ T6086] RBP: 00007ffcdf6e3ba0 R08: 00007ffcdf6e4ba0 R09: 00000000ffffffff
[  455.024957][ T6086] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcdf6e4c30
[  455.024962][ T6086] R13: 00007f91c5c3445c R14: 000000000006f0e8 R15: 00007ffcdf6e4c70
[  455.024976][ T6086]  </TASK>
[  455.025940][ T6086] F2FS-fs (loop0): Stopped filesystem due to reason: 3
[  455.082585][T11308] F2FS-fs (loop2): Small segment_count (9 < 1 * 24)
[  455.131271][T11308] F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock
[  455.225269][T11308] F2FS-fs (loop2): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  455.244100][T11308] F2FS-fs (loop2): Try to recover 1th superblock, ret: 0
[  455.246419][T11308] F2FS-fs (loop2): Mounted with checkpoint version = 48b305e5
[  455.269473][ T6092] CPU: 0 UID: 0 PID: 6092 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  455.269489][ T6092] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  455.269495][ T6092] Call Trace:
[  455.269500][ T6092]  <TASK>
[  455.269504][ T6092]  dump_stack_lvl+0xe8/0x150
[  455.269524][ T6092]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  455.269539][ T6092]  f2fs_write_end_io+0x124b/0x1710
[  455.269561][ T6092]  __submit_merged_bio+0x258/0x6a0
[  455.269572][ T6092]  ? rcu_is_watching+0x15/0xb0
[  455.269589][ T6092]  __submit_merged_write_cond+0x3c9/0x4e0
[  455.269603][ T6092]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  455.269623][ T6092]  f2fs_write_data_pages+0x2a27/0x36f0
[  455.269650][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  455.269680][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  455.269688][ T6092]  ? __bfs+0x153/0x290
[  455.269699][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  455.269713][ T6092]  ? lockdep_unlock+0x5d/0xd0
[  455.269723][ T6092]  ? __lock_acquire+0x13e8/0x2cf0
[  455.269772][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  455.269787][ T6092]  do_writepages+0x338/0x560
[  455.269805][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  455.269817][ T6092]  filemap_fdatawrite+0x1e9/0x2f0
[  455.269831][ T6092]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  455.269861][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  455.269872][ T6092]  f2fs_sync_dirty_inodes+0x30e/0x830
[  455.269891][ T6092]  f2fs_write_checkpoint+0xa3d/0x2710
[  455.269917][ T6092]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  455.269951][ T6092]  kill_f2fs_super+0x2dd/0x700
[  455.269967][ T6092]  ? __pfx_kill_f2fs_super+0x10/0x10
[  455.269985][ T6092]  ? call_rcu+0x64b/0x8b0
[  455.269992][ T6092]  ? lockdep_hardirqs_on+0x7a/0x110
[  455.270009][ T6092]  deactivate_locked_super+0xbc/0x110
[  455.270023][ T6092]  cleanup_mnt+0x3d3/0x460
[  455.270035][ T6092]  task_work_run+0x1d9/0x270
[  455.270051][ T6092]  ? __pfx_task_work_run+0x10/0x10
[  455.270068][ T6092]  exit_to_user_mode_loop+0x1fa/0x730
[  455.270080][ T6092]  ? rcu_is_watching+0x15/0xb0
[  455.270093][ T6092]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  455.270102][ T6092]  do_syscall_64+0x353/0x580
[  455.270113][ T6092]  ? trace_irq_disable+0x3b/0x140
[  455.270127][ T6092]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  455.270136][ T6092] RIP: 0033:0x7f835259f257
[  455.270146][ T6092] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  455.270154][ T6092] RSP: 002b:00007fffacbabcb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  455.270165][ T6092] RAX: 0000000000000000 RBX: 00007f835263445c RCX: 00007f835259f257
[  455.270171][ T6092] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffacbabd70
[  455.270176][ T6092] RBP: 00007fffacbabd70 R08: 00007fffacbacd70 R09: 00000000ffffffff
[  455.270182][ T6092] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffacbace00
[  455.270187][ T6092] R13: 00007f835263445c R14: 000000000006f1d3 R15: 00007fffacbace40
[  455.270200][ T6092]  </TASK>
[  455.270205][ T6092] F2FS-fs (loop2): Stopped filesystem due to reason: 3
[  455.513837][T11316] F2FS-fs (loop0): Small segment_count (9 < 1 * 24)
[  455.518964][T11316] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
[  455.554520][T11314] F2FS-fs (loop1): Small segment_count (9 < 1 * 24)
[  455.556663][T11314] F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock
[  455.588643][T11314] F2FS-fs (loop1): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  455.594710][T11314] F2FS-fs (loop1): Try to recover 1th superblock, ret: 0
[  455.596942][T11314] F2FS-fs (loop1): Mounted with checkpoint version = 48b305e5
[  455.616795][T11316] F2FS-fs (loop0): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  455.625398][ T6087] CPU: 1 UID: 0 PID: 6087 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  455.625412][ T6087] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  455.625418][ T6087] Call Trace:
[  455.625423][ T6087]  <TASK>
[  455.625427][ T6087]  dump_stack_lvl+0xe8/0x150
[  455.625446][ T6087]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  455.625462][ T6087]  f2fs_write_end_io+0x124b/0x1710
[  455.625485][ T6087]  __submit_merged_bio+0x258/0x6a0
[  455.625496][ T6087]  ? rcu_is_watching+0x15/0xb0
[  455.625514][ T6087]  __submit_merged_write_cond+0x3c9/0x4e0
[  455.625528][ T6087]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  455.625549][ T6087]  f2fs_write_data_pages+0x2a27/0x36f0
[  455.625578][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  455.625609][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  455.625618][ T6087]  ? __bfs+0x153/0x290
[  455.625628][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  455.625644][ T6087]  ? lockdep_unlock+0x5d/0xd0
[  455.625653][ T6087]  ? __lock_acquire+0x13e8/0x2cf0
[  455.625676][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  455.625688][ T6087]  do_writepages+0x338/0x560
[  455.625705][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  455.625744][ T6087]  filemap_fdatawrite+0x1e9/0x2f0
[  455.625761][ T6087]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  455.625794][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  455.625805][ T6087]  f2fs_sync_dirty_inodes+0x30e/0x830
[  455.625826][ T6087]  f2fs_write_checkpoint+0xa3d/0x2710
[  455.625853][ T6087]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  455.625890][ T6087]  kill_f2fs_super+0x2dd/0x700
[  455.625907][ T6087]  ? __pfx_kill_f2fs_super+0x10/0x10
[  455.625924][ T6087]  ? call_rcu+0x64b/0x8b0
[  455.625932][ T6087]  ? lockdep_hardirqs_on+0x7a/0x110
[  455.625950][ T6087]  deactivate_locked_super+0xbc/0x110
[  455.625965][ T6087]  cleanup_mnt+0x3d3/0x460
[  455.625977][ T6087]  task_work_run+0x1d9/0x270
[  455.625993][ T6087]  ? __pfx_task_work_run+0x10/0x10
[  455.626010][ T6087]  exit_to_user_mode_loop+0x1fa/0x730
[  455.626022][ T6087]  ? rcu_is_watching+0x15/0xb0
[  455.626035][ T6087]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  455.626045][ T6087]  do_syscall_64+0x353/0x580
[  455.626055][ T6087]  ? trace_irq_disable+0x3b/0x140
[  455.626070][ T6087]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  455.626079][ T6087] RIP: 0033:0x7fbe5c39f257
[  455.626088][ T6087] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  455.626096][ T6087] RSP: 002b:00007ffd72651a58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  455.626107][ T6087] RAX: 0000000000000000 RBX: 00007fbe5c43445c RCX: 00007fbe5c39f257
[  455.626113][ T6087] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd72651b10
[  455.626118][ T6087] RBP: 00007ffd72651b10 R08: 00007ffd72652b10 R09: 00000000ffffffff
[  455.626124][ T6087] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd72652ba0
[  455.626129][ T6087] R13: 00007fbe5c43445c R14: 000000000006f33b R15: 00007ffd72652be0
[  455.626144][ T6087]  </TASK>
[  455.626148][ T6087] F2FS-fs (loop1): Stopped filesystem due to reason: 3
[  455.665341][T11316] F2FS-fs (loop0): Try to recover 1th superblock, ret: 0
[  455.746795][T11316] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5
[  455.791418][ T6086] CPU: 0 UID: 0 PID: 6086 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  455.791435][ T6086] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  455.791441][ T6086] Call Trace:
[  455.791446][ T6086]  <TASK>
[  455.791451][ T6086]  dump_stack_lvl+0xe8/0x150
[  455.791495][ T6086]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  455.791512][ T6086]  f2fs_write_end_io+0x124b/0x1710
[  455.791534][ T6086]  __submit_merged_bio+0x258/0x6a0
[  455.791544][ T6086]  ? rcu_is_watching+0x15/0xb0
[  455.791562][ T6086]  __submit_merged_write_cond+0x3c9/0x4e0
[  455.791576][ T6086]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  455.791596][ T6086]  f2fs_write_data_pages+0x2a27/0x36f0
[  455.791623][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  455.791659][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  455.791667][ T6086]  ? __bfs+0x153/0x290
[  455.791678][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  455.791728][ T6086]  ? lockdep_unlock+0x5d/0xd0
[  455.791739][ T6086]  ? __lock_acquire+0x13e8/0x2cf0
[  455.791761][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  455.791774][ T6086]  do_writepages+0x338/0x560
[  455.791792][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  455.791804][ T6086]  filemap_fdatawrite+0x1e9/0x2f0
[  455.791818][ T6086]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  455.791848][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  455.791859][ T6086]  f2fs_sync_dirty_inodes+0x30e/0x830
[  455.791878][ T6086]  f2fs_write_checkpoint+0xa3d/0x2710
[  455.791904][ T6086]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  455.791938][ T6086]  kill_f2fs_super+0x2dd/0x700
[  455.791955][ T6086]  ? __pfx_kill_f2fs_super+0x10/0x10
[  455.791972][ T6086]  ? call_rcu+0x64b/0x8b0
[  455.791980][ T6086]  ? lockdep_hardirqs_on+0x7a/0x110
[  455.791996][ T6086]  deactivate_locked_super+0xbc/0x110
[  455.792010][ T6086]  cleanup_mnt+0x3d3/0x460
[  455.792022][ T6086]  task_work_run+0x1d9/0x270
[  455.792037][ T6086]  ? __pfx_task_work_run+0x10/0x10
[  455.792053][ T6086]  exit_to_user_mode_loop+0x1fa/0x730
[  455.792066][ T6086]  ? rcu_is_watching+0x15/0xb0
[  455.792079][ T6086]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  455.792088][ T6086]  do_syscall_64+0x353/0x580
[  455.792098][ T6086]  ? trace_irq_disable+0x3b/0x140
[  455.792112][ T6086]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  455.792120][ T6086] RIP: 0033:0x7f91c5b9f257
[  455.792130][ T6086] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  455.792137][ T6086] RSP: 002b:00007ffcdf6e3ae8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  455.792148][ T6086] RAX: 0000000000000000 RBX: 00007f91c5c3445c RCX: 00007f91c5b9f257
[  455.792153][ T6086] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcdf6e3ba0
[  455.792159][ T6086] RBP: 00007ffcdf6e3ba0 R08: 00007ffcdf6e4ba0 R09: 00000000ffffffff
[  455.792165][ T6086] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcdf6e4c30
[  455.792170][ T6086] R13: 00007f91c5c3445c R14: 000000000006f3db R15: 00007ffcdf6e4c70
[  455.792184][ T6086]  </TASK>
[  455.794729][ T6086] F2FS-fs (loop0): Stopped filesystem due to reason: 3
[  455.877510][T11318] F2FS-fs (loop2): Small segment_count (9 < 1 * 24)
[  455.899792][T11318] F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock
[  455.936333][T11318] F2FS-fs (loop2): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  455.942675][T11318] F2FS-fs (loop2): Try to recover 1th superblock, ret: 0
[  455.945009][T11318] F2FS-fs (loop2): Mounted with checkpoint version = 48b305e5
[  455.965064][ T6092] CPU: 1 UID: 0 PID: 6092 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  455.965081][ T6092] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  455.965087][ T6092] Call Trace:
[  455.965091][ T6092]  <TASK>
[  455.965096][ T6092]  dump_stack_lvl+0xe8/0x150
[  455.965115][ T6092]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  455.965130][ T6092]  f2fs_write_end_io+0x124b/0x1710
[  455.965153][ T6092]  __submit_merged_bio+0x258/0x6a0
[  455.965170][ T6092]  ? rcu_is_watching+0x15/0xb0
[  455.965188][ T6092]  __submit_merged_write_cond+0x3c9/0x4e0
[  455.965202][ T6092]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  455.965222][ T6092]  f2fs_write_data_pages+0x2a27/0x36f0
[  455.965248][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  455.965278][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  455.965286][ T6092]  ? __bfs+0x153/0x290
[  455.965297][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  455.965311][ T6092]  ? lockdep_unlock+0x5d/0xd0
[  455.965321][ T6092]  ? __lock_acquire+0x13e8/0x2cf0
[  455.965343][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  455.965360][ T6092]  do_writepages+0x338/0x560
[  455.965377][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  455.965389][ T6092]  filemap_fdatawrite+0x1e9/0x2f0
[  455.965403][ T6092]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  455.965432][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  455.965443][ T6092]  f2fs_sync_dirty_inodes+0x30e/0x830
[  455.965462][ T6092]  f2fs_write_checkpoint+0xa3d/0x2710
[  455.965488][ T6092]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  455.965522][ T6092]  kill_f2fs_super+0x2dd/0x700
[  455.965538][ T6092]  ? __pfx_kill_f2fs_super+0x10/0x10
[  455.965555][ T6092]  ? call_rcu+0x64b/0x8b0
[  455.965562][ T6092]  ? lockdep_hardirqs_on+0x7a/0x110
[  455.965579][ T6092]  deactivate_locked_super+0xbc/0x110
[  455.965593][ T6092]  cleanup_mnt+0x3d3/0x460
[  455.965604][ T6092]  task_work_run+0x1d9/0x270
[  455.965619][ T6092]  ? __pfx_task_work_run+0x10/0x10
[  455.965635][ T6092]  exit_to_user_mode_loop+0x1fa/0x730
[  455.965647][ T6092]  ? rcu_is_watching+0x15/0xb0
[  455.965660][ T6092]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  455.965670][ T6092]  do_syscall_64+0x353/0x580
[  455.965680][ T6092]  ? trace_irq_disable+0x3b/0x140
[  455.965723][ T6092]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  455.965733][ T6092] RIP: 0033:0x7f835259f257
[  455.965743][ T6092] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  455.965750][ T6092] RSP: 002b:00007fffacbabcb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  455.965760][ T6092] RAX: 0000000000000000 RBX: 00007f835263445c RCX: 00007f835259f257
[  455.965766][ T6092] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffacbabd70
[  455.965771][ T6092] RBP: 00007fffacbabd70 R08: 00007fffacbacd70 R09: 00000000ffffffff
[  455.965777][ T6092] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffacbace00
[  455.965782][ T6092] R13: 00007f835263445c R14: 000000000006f48d R15: 00007fffacbace40
[  455.965795][ T6092]  </TASK>
[  455.965800][ T6092] F2FS-fs (loop2): Stopped filesystem due to reason: 3
[  456.012297][T11324] set_capacity_and_notify: 10 callbacks suppressed
[  456.012309][T11324] loop1: detected capacity change from 0 to 40427
[  456.081528][T11324] F2FS-fs (loop1): Small segment_count (9 < 1 * 24)
[  456.083838][T11324] F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock
[  456.204809][T11324] F2FS-fs (loop1): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  456.216402][T11324] F2FS-fs (loop1): Try to recover 1th superblock, ret: 0
[  456.222139][T11324] F2FS-fs (loop1): Mounted with checkpoint version = 48b305e5
[  456.232413][   T34] kauditd_printk_skb: 30 callbacks suppressed
[  456.232423][   T34] audit: type=1800 audit(1785658506.103:2501): pid=11324 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.1.1267" name="file1" dev="loop1" ino=10 res=0 errno=0
[  456.246555][   T34] audit: type=1800 audit(1785658506.113:2502): pid=11324 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.1.1267" name="file1" dev="loop1" ino=10 res=0 errno=0
[  456.266093][ T6087] CPU: 1 UID: 0 PID: 6087 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  456.266109][ T6087] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  456.266115][ T6087] Call Trace:
[  456.266120][ T6087]  <TASK>
[  456.266125][ T6087]  dump_stack_lvl+0xe8/0x150
[  456.266144][ T6087]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  456.266160][ T6087]  f2fs_write_end_io+0x124b/0x1710
[  456.266182][ T6087]  __submit_merged_bio+0x258/0x6a0
[  456.266198][ T6087]  ? rcu_is_watching+0x15/0xb0
[  456.266215][ T6087]  __submit_merged_write_cond+0x3c9/0x4e0
[  456.266230][ T6087]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  456.266250][ T6087]  f2fs_write_data_pages+0x2a27/0x36f0
[  456.266261][ T6087]  ? __lock_acquire+0x683/0x2cf0
[  456.266287][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  456.266317][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  456.266325][ T6087]  ? __bfs+0x153/0x290
[  456.266335][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  456.266350][ T6087]  ? lockdep_unlock+0x5d/0xd0
[  456.266359][ T6087]  ? __lock_acquire+0x13e8/0x2cf0
[  456.266381][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  456.266392][ T6087]  do_writepages+0x338/0x560
[  456.266427][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  456.266438][ T6087]  filemap_fdatawrite+0x1e9/0x2f0
[  456.266453][ T6087]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  456.266483][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  456.266493][ T6087]  f2fs_sync_dirty_inodes+0x30e/0x830
[  456.266513][ T6087]  f2fs_write_checkpoint+0xa3d/0x2710
[  456.266538][ T6087]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  456.266572][ T6087]  kill_f2fs_super+0x2dd/0x700
[  456.266589][ T6087]  ? __pfx_kill_f2fs_super+0x10/0x10
[  456.266606][ T6087]  ? call_rcu+0x64b/0x8b0
[  456.266614][ T6087]  ? lockdep_hardirqs_on+0x7a/0x110
[  456.266630][ T6087]  deactivate_locked_super+0xbc/0x110
[  456.266644][ T6087]  cleanup_mnt+0x3d3/0x460
[  456.266656][ T6087]  task_work_run+0x1d9/0x270
[  456.266671][ T6087]  ? __pfx_task_work_run+0x10/0x10
[  456.266711][ T6087]  exit_to_user_mode_loop+0x1fa/0x730
[  456.266723][ T6087]  ? rcu_is_watching+0x15/0xb0
[  456.266736][ T6087]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  456.266745][ T6087]  do_syscall_64+0x353/0x580
[  456.266755][ T6087]  ? trace_irq_disable+0x3b/0x140
[  456.266769][ T6087]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  456.266777][ T6087] RIP: 0033:0x7fbe5c39f257
[  456.266787][ T6087] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  456.266795][ T6087] RSP: 002b:00007ffd72651a58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  456.266805][ T6087] RAX: 0000000000000000 RBX: 00007fbe5c43445c RCX: 00007fbe5c39f257
[  456.266810][ T6087] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd72651b10
[  456.266815][ T6087] RBP: 00007ffd72651b10 R08: 00007ffd72652b10 R09: 00000000ffffffff
[  456.266821][ T6087] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd72652ba0
[  456.266826][ T6087] R13: 00007fbe5c43445c R14: 000000000006f5ba R15: 00007ffd72652be0
[  456.266840][ T6087]  </TASK>
[  456.268367][ T6087] F2FS-fs (loop1): Stopped filesystem due to reason: 3
[  456.461758][T11330] loop2: detected capacity change from 0 to 40427
[  456.466562][T11330] F2FS-fs (loop2): Small segment_count (9 < 1 * 24)
[  456.471866][T11330] F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock
[  456.531141][T11330] F2FS-fs (loop2): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  456.543837][T11330] F2FS-fs (loop2): Try to recover 1th superblock, ret: 0
[  456.547240][T11332] loop0: detected capacity change from 0 to 40427
[  456.549336][T11330] F2FS-fs (loop2): Mounted with checkpoint version = 48b305e5
[  456.553027][T11332] F2FS-fs (loop0): Small segment_count (9 < 1 * 24)
[  456.555465][T11332] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
[  456.560831][   T34] audit: type=1800 audit(1785658506.423:2503): pid=11330 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.2.1269" name="file1" dev="loop2" ino=10 res=0 errno=0
[  456.564218][T11330] bio_check_eod: 50 callbacks suppressed
[  456.564228][T11330] syz.2.1269: attempt to access beyond end of device
[  456.564228][T11330] loop2: rw=2049, sector=53248, nr_sectors = 976 limit=40427
[  456.574272][T11330] syz.2.1269: attempt to access beyond end of device
[  456.574272][T11330] loop2: rw=8423425, sector=54224, nr_sectors = 8 limit=40427
[  456.583947][   T34] audit: type=1800 audit(1785658506.423:2504): pid=11330 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.2.1269" name="file1" dev="loop2" ino=10 res=0 errno=0
[  456.591137][ T6092] syz-executor: attempt to access beyond end of device
[  456.591137][ T6092] loop2: rw=2049, sector=45096, nr_sectors = 8 limit=40427
[  456.597974][ T6092] CPU: 0 UID: 0 PID: 6092 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  456.597988][ T6092] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  456.597995][ T6092] Call Trace:
[  456.597999][ T6092]  <TASK>
[  456.598004][ T6092]  dump_stack_lvl+0xe8/0x150
[  456.598022][ T6092]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  456.598038][ T6092]  f2fs_write_end_io+0x124b/0x1710
[  456.598060][ T6092]  __submit_merged_bio+0x258/0x6a0
[  456.598071][ T6092]  ? rcu_is_watching+0x15/0xb0
[  456.598088][ T6092]  __submit_merged_write_cond+0x3c9/0x4e0
[  456.598103][ T6092]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  456.598122][ T6092]  f2fs_write_data_pages+0x2a27/0x36f0
[  456.598150][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  456.598193][ T6092]  ? __lock_acquire+0x683/0x2cf0
[  456.598206][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  456.598213][ T6092]  ? __bfs+0x153/0x290
[  456.598224][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  456.598239][ T6092]  ? lockdep_unlock+0x5d/0xd0
[  456.598248][ T6092]  ? __lock_acquire+0x13e8/0x2cf0
[  456.598270][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  456.598282][ T6092]  do_writepages+0x338/0x560
[  456.598299][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  456.598311][ T6092]  filemap_fdatawrite+0x1e9/0x2f0
[  456.598325][ T6092]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  456.598355][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  456.598367][ T6092]  f2fs_sync_dirty_inodes+0x30e/0x830
[  456.598386][ T6092]  f2fs_write_checkpoint+0xa3d/0x2710
[  456.598412][ T6092]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  456.598446][ T6092]  kill_f2fs_super+0x2dd/0x700
[  456.598462][ T6092]  ? __pfx_kill_f2fs_super+0x10/0x10
[  456.598479][ T6092]  ? call_rcu+0x64b/0x8b0
[  456.598486][ T6092]  ? lockdep_hardirqs_on+0x7a/0x110
[  456.598503][ T6092]  deactivate_locked_super+0xbc/0x110
[  456.598517][ T6092]  cleanup_mnt+0x3d3/0x460
[  456.598529][ T6092]  task_work_run+0x1d9/0x270
[  456.598544][ T6092]  ? __pfx_task_work_run+0x10/0x10
[  456.598561][ T6092]  exit_to_user_mode_loop+0x1fa/0x730
[  456.598573][ T6092]  ? rcu_is_watching+0x15/0xb0
[  456.598586][ T6092]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  456.598595][ T6092]  do_syscall_64+0x353/0x580
[  456.598606][ T6092]  ? trace_irq_disable+0x3b/0x140
[  456.598620][ T6092]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  456.598628][ T6092] RIP: 0033:0x7f835259f257
[  456.598638][ T6092] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  456.598646][ T6092] RSP: 002b:00007fffacbabcb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  456.598686][ T6092] RAX: 0000000000000000 RBX: 00007f835263445c RCX: 00007f835259f257
[  456.598692][ T6092] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffacbabd70
[  456.598697][ T6092] RBP: 00007fffacbabd70 R08: 00007fffacbacd70 R09: 00000000ffffffff
[  456.598703][ T6092] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffacbace00
[  456.598708][ T6092] R13: 00007f835263445c R14: 000000000006f6ed R15: 00007fffacbace40
[  456.598721][ T6092]  </TASK>
[  456.598727][ T6092] F2FS-fs (loop2): Stopped filesystem due to reason: 3
[  456.638167][T11332] F2FS-fs (loop0): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  456.749538][T11332] F2FS-fs (loop0): Try to recover 1th superblock, ret: 0
[  456.752771][T11332] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5
[  456.763159][   T34] audit: type=1800 audit(1785658506.623:2505): pid=11332 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.1268" name="file1" dev="loop0" ino=10 res=0 errno=0
[  456.773314][T11332] syz.0.1268: attempt to access beyond end of device
[  456.773314][T11332] loop0: rw=2049, sector=53248, nr_sectors = 976 limit=40427
[  456.778127][T11332] syz.0.1268: attempt to access beyond end of device
[  456.778127][T11332] loop0: rw=8423425, sector=54224, nr_sectors = 8 limit=40427
[  456.783240][   T34] audit: type=1800 audit(1785658506.623:2506): pid=11332 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.1268" name="file1" dev="loop0" ino=10 res=0 errno=0
[  456.792095][ T6086] syz-executor: attempt to access beyond end of device
[  456.792095][ T6086] loop0: rw=2049, sector=45096, nr_sectors = 8 limit=40427
[  456.812101][ T6086] CPU: 0 UID: 0 PID: 6086 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  456.812121][ T6086] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  456.812127][ T6086] Call Trace:
[  456.812132][ T6086]  <TASK>
[  456.812136][ T6086]  dump_stack_lvl+0xe8/0x150
[  456.812171][ T6086]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  456.812187][ T6086]  f2fs_write_end_io+0x124b/0x1710
[  456.812209][ T6086]  __submit_merged_bio+0x258/0x6a0
[  456.812220][ T6086]  ? rcu_is_watching+0x15/0xb0
[  456.812237][ T6086]  __submit_merged_write_cond+0x3c9/0x4e0
[  456.812252][ T6086]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  456.812272][ T6086]  f2fs_write_data_pages+0x2a27/0x36f0
[  456.812298][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  456.812329][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  456.812337][ T6086]  ? __bfs+0x153/0x290
[  456.812347][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  456.812362][ T6086]  ? lockdep_unlock+0x5d/0xd0
[  456.812371][ T6086]  ? __lock_acquire+0x13e8/0x2cf0
[  456.812393][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  456.812405][ T6086]  do_writepages+0x338/0x560
[  456.812422][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  456.812434][ T6086]  filemap_fdatawrite+0x1e9/0x2f0
[  456.812448][ T6086]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  456.812478][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  456.812489][ T6086]  f2fs_sync_dirty_inodes+0x30e/0x830
[  456.812510][ T6086]  f2fs_write_checkpoint+0xa3d/0x2710
[  456.812535][ T6086]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  456.812569][ T6086]  kill_f2fs_super+0x2dd/0x700
[  456.812586][ T6086]  ? __pfx_kill_f2fs_super+0x10/0x10
[  456.812603][ T6086]  ? call_rcu+0x64b/0x8b0
[  456.812610][ T6086]  ? lockdep_hardirqs_on+0x7a/0x110
[  456.812628][ T6086]  deactivate_locked_super+0xbc/0x110
[  456.812667][ T6086]  cleanup_mnt+0x3d3/0x460
[  456.812692][ T6086]  task_work_run+0x1d9/0x270
[  456.812710][ T6086]  ? __pfx_task_work_run+0x10/0x10
[  456.812726][ T6086]  exit_to_user_mode_loop+0x1fa/0x730
[  456.812738][ T6086]  ? rcu_is_watching+0x15/0xb0
[  456.812751][ T6086]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  456.812761][ T6086]  do_syscall_64+0x353/0x580
[  456.812771][ T6086]  ? trace_irq_disable+0x3b/0x140
[  456.812786][ T6086]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  456.812794][ T6086] RIP: 0033:0x7f91c5b9f257
[  456.812804][ T6086] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  456.812812][ T6086] RSP: 002b:00007ffcdf6e3ae8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  456.812836][ T6086] RAX: 0000000000000000 RBX: 00007f91c5c3445c RCX: 00007f91c5b9f257
[  456.812843][ T6086] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcdf6e3ba0
[  456.812848][ T6086] RBP: 00007ffcdf6e3ba0 R08: 00007ffcdf6e4ba0 R09: 00000000ffffffff
[  456.812854][ T6086] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcdf6e4c30
[  456.812860][ T6086] R13: 00007f91c5c3445c R14: 000000000006f7d3 R15: 00007ffcdf6e4c70
[  456.812874][ T6086]  </TASK>
[  456.812953][ T6086] F2FS-fs (loop0): Stopped filesystem due to reason: 3
[  456.889050][T11336] loop1: detected capacity change from 0 to 40427
[  456.916814][T11336] F2FS-fs (loop1): Small segment_count (9 < 1 * 24)
[  456.934813][T11336] F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock
[  457.023238][T11336] F2FS-fs (loop1): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  457.029261][T11336] F2FS-fs (loop1): Try to recover 1th superblock, ret: 0
[  457.032468][T11336] F2FS-fs (loop1): Mounted with checkpoint version = 48b305e5
[  457.036244][   T34] audit: type=1800 audit(1785658506.903:2507): pid=11336 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.1.1270" name="file1" dev="loop1" ino=10 res=0 errno=0
[  457.049144][T11336] syz.1.1270: attempt to access beyond end of device
[  457.049144][T11336] loop1: rw=2049, sector=53248, nr_sectors = 976 limit=40427
[  457.053572][   T34] audit: type=1800 audit(1785658506.913:2508): pid=11336 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.1.1270" name="file1" dev="loop1" ino=10 res=0 errno=0
[  457.060790][T11336] syz.1.1270: attempt to access beyond end of device
[  457.060790][T11336] loop1: rw=8423425, sector=54224, nr_sectors = 8 limit=40427
[  457.071046][ T6087] syz-executor: attempt to access beyond end of device
[  457.071046][ T6087] loop1: rw=2049, sector=45096, nr_sectors = 8 limit=40427
[  457.076918][ T6087] CPU: 0 UID: 0 PID: 6087 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  457.076932][ T6087] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  457.076938][ T6087] Call Trace:
[  457.076944][ T6087]  <TASK>
[  457.076948][ T6087]  dump_stack_lvl+0xe8/0x150
[  457.076968][ T6087]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  457.076985][ T6087]  f2fs_write_end_io+0x124b/0x1710
[  457.077008][ T6087]  __submit_merged_bio+0x258/0x6a0
[  457.077019][ T6087]  ? rcu_is_watching+0x15/0xb0
[  457.077037][ T6087]  __submit_merged_write_cond+0x3c9/0x4e0
[  457.077052][ T6087]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  457.077073][ T6087]  f2fs_write_data_pages+0x2a27/0x36f0
[  457.077084][ T6087]  ? __lock_acquire+0x683/0x2cf0
[  457.077119][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  457.077151][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  457.077159][ T6087]  ? __bfs+0x153/0x290
[  457.077169][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  457.077185][ T6087]  ? lockdep_unlock+0x5d/0xd0
[  457.077213][ T6087]  ? __lock_acquire+0x13e8/0x2cf0
[  457.077238][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  457.077250][ T6087]  do_writepages+0x338/0x560
[  457.077268][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  457.077280][ T6087]  filemap_fdatawrite+0x1e9/0x2f0
[  457.077295][ T6087]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  457.077327][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  457.077338][ T6087]  f2fs_sync_dirty_inodes+0x30e/0x830
[  457.077358][ T6087]  f2fs_write_checkpoint+0xa3d/0x2710
[  457.077385][ T6087]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  457.077422][ T6087]  kill_f2fs_super+0x2dd/0x700
[  457.077439][ T6087]  ? __pfx_kill_f2fs_super+0x10/0x10
[  457.077456][ T6087]  ? call_rcu+0x64b/0x8b0
[  457.077464][ T6087]  ? lockdep_hardirqs_on+0x7a/0x110
[  457.077482][ T6087]  deactivate_locked_super+0xbc/0x110
[  457.077496][ T6087]  cleanup_mnt+0x3d3/0x460
[  457.077508][ T6087]  task_work_run+0x1d9/0x270
[  457.077524][ T6087]  ? __pfx_task_work_run+0x10/0x10
[  457.077541][ T6087]  exit_to_user_mode_loop+0x1fa/0x730
[  457.077554][ T6087]  ? rcu_is_watching+0x15/0xb0
[  457.077566][ T6087]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  457.077576][ T6087]  do_syscall_64+0x353/0x580
[  457.077590][ T6087]  ? trace_irq_disable+0x3b/0x140
[  457.077605][ T6087]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  457.077613][ T6087] RIP: 0033:0x7fbe5c39f257
[  457.077650][ T6087] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  457.077658][ T6087] RSP: 002b:00007ffd72651a58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  457.077668][ T6087] RAX: 0000000000000000 RBX: 00007fbe5c43445c RCX: 00007fbe5c39f257
[  457.077674][ T6087] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd72651b10
[  457.077679][ T6087] RBP: 00007ffd72651b10 R08: 00007ffd72652b10 R09: 00000000ffffffff
[  457.077685][ T6087] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd72652ba0
[  457.077691][ T6087] R13: 00007fbe5c43445c R14: 000000000006f8e4 R15: 00007ffd72652be0
[  457.077706][ T6087]  </TASK>
[  457.079532][ T6087] F2FS-fs (loop1): Stopped filesystem due to reason: 3
[  457.293850][T11340] loop2: detected capacity change from 0 to 40427
[  457.297112][T11340] F2FS-fs (loop2): Small segment_count (9 < 1 * 24)
[  457.299370][T11340] F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock
[  457.381169][T11340] F2FS-fs (loop2): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  457.393844][T11340] F2FS-fs (loop2): Try to recover 1th superblock, ret: 0
[  457.397589][T11340] F2FS-fs (loop2): Mounted with checkpoint version = 48b305e5
[  457.403940][   T34] audit: type=1800 audit(1785658507.273:2509): pid=11340 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.2.1271" name="file1" dev="loop2" ino=10 res=0 errno=0
[  457.414898][T11344] loop0: detected capacity change from 0 to 40427
[  457.416145][T11340] syz.2.1271: attempt to access beyond end of device
[  457.416145][T11340] loop2: rw=2049, sector=53248, nr_sectors = 976 limit=40427
[  457.417961][   T34] audit: type=1800 audit(1785658507.283:2510): pid=11340 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.2.1271" name="file1" dev="loop2" ino=10 res=0 errno=0
[  457.429223][T11344] F2FS-fs (loop0): Small segment_count (9 < 1 * 24)
[  457.438360][T11344] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
[  457.446255][ T6092] CPU: 0 UID: 0 PID: 6092 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  457.446271][ T6092] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  457.446277][ T6092] Call Trace:
[  457.446282][ T6092]  <TASK>
[  457.446286][ T6092]  dump_stack_lvl+0xe8/0x150
[  457.446306][ T6092]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  457.446322][ T6092]  f2fs_write_end_io+0x124b/0x1710
[  457.446345][ T6092]  __submit_merged_bio+0x258/0x6a0
[  457.446355][ T6092]  ? rcu_is_watching+0x15/0xb0
[  457.446372][ T6092]  __submit_merged_write_cond+0x3c9/0x4e0
[  457.446387][ T6092]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  457.446406][ T6092]  f2fs_write_data_pages+0x2a27/0x36f0
[  457.446418][ T6092]  ? __lock_acquire+0x683/0x2cf0
[  457.446444][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  457.446474][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  457.446500][ T6092]  ? __bfs+0x153/0x290
[  457.446510][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  457.446525][ T6092]  ? lockdep_unlock+0x5d/0xd0
[  457.446535][ T6092]  ? __lock_acquire+0x13e8/0x2cf0
[  457.446556][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  457.446568][ T6092]  do_writepages+0x338/0x560
[  457.446586][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  457.446625][ T6092]  filemap_fdatawrite+0x1e9/0x2f0
[  457.446640][ T6092]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  457.446670][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  457.446681][ T6092]  f2fs_sync_dirty_inodes+0x30e/0x830
[  457.446700][ T6092]  f2fs_write_checkpoint+0xa3d/0x2710
[  457.446726][ T6092]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  457.446760][ T6092]  kill_f2fs_super+0x2dd/0x700
[  457.446777][ T6092]  ? __pfx_kill_f2fs_super+0x10/0x10
[  457.446794][ T6092]  ? call_rcu+0x64b/0x8b0
[  457.446802][ T6092]  ? lockdep_hardirqs_on+0x7a/0x110
[  457.446818][ T6092]  deactivate_locked_super+0xbc/0x110
[  457.446832][ T6092]  cleanup_mnt+0x3d3/0x460
[  457.446843][ T6092]  task_work_run+0x1d9/0x270
[  457.446859][ T6092]  ? __pfx_task_work_run+0x10/0x10
[  457.446875][ T6092]  exit_to_user_mode_loop+0x1fa/0x730
[  457.446888][ T6092]  ? rcu_is_watching+0x15/0xb0
[  457.446900][ T6092]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  457.446910][ T6092]  do_syscall_64+0x353/0x580
[  457.446920][ T6092]  ? trace_irq_disable+0x3b/0x140
[  457.446935][ T6092]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  457.446943][ T6092] RIP: 0033:0x7f835259f257
[  457.446953][ T6092] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  457.446960][ T6092] RSP: 002b:00007fffacbabcb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  457.446971][ T6092] RAX: 0000000000000000 RBX: 00007f835263445c RCX: 00007f835259f257
[  457.446977][ T6092] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffacbabd70
[  457.446982][ T6092] RBP: 00007fffacbabd70 R08: 00007fffacbacd70 R09: 00000000ffffffff
[  457.446987][ T6092] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffacbace00
[  457.446993][ T6092] R13: 00007f835263445c R14: 000000000006fa42 R15: 00007fffacbace40
[  457.447006][ T6092]  </TASK>
[  457.447040][ T6092] F2FS-fs (loop2): Stopped filesystem due to reason: 3
[  457.498434][T11344] F2FS-fs (loop0): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  457.531743][T11346] loop1: detected capacity change from 0 to 40427
[  457.535901][T11344] F2FS-fs (loop0): Try to recover 1th superblock, ret: 0
[  457.538779][T11346] F2FS-fs (loop1): Small segment_count (9 < 1 * 24)
[  457.555383][T11344] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5
[  457.566811][T11346] F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock
[  457.592482][ T6086] CPU: 1 UID: 0 PID: 6086 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  457.592503][ T6086] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  457.592509][ T6086] Call Trace:
[  457.592514][ T6086]  <TASK>
[  457.592519][ T6086]  dump_stack_lvl+0xe8/0x150
[  457.592538][ T6086]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  457.592555][ T6086]  f2fs_write_end_io+0x124b/0x1710
[  457.592578][ T6086]  __submit_merged_bio+0x258/0x6a0
[  457.592612][ T6086]  ? rcu_is_watching+0x15/0xb0
[  457.592630][ T6086]  __submit_merged_write_cond+0x3c9/0x4e0
[  457.592644][ T6086]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  457.592664][ T6086]  f2fs_write_data_pages+0x2a27/0x36f0
[  457.592691][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  457.592722][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  457.592729][ T6086]  ? __bfs+0x153/0x290
[  457.592740][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  457.592755][ T6086]  ? lockdep_unlock+0x5d/0xd0
[  457.592765][ T6086]  ? __lock_acquire+0x13e8/0x2cf0
[  457.592801][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  457.592813][ T6086]  do_writepages+0x338/0x560
[  457.592831][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  457.592842][ T6086]  filemap_fdatawrite+0x1e9/0x2f0
[  457.592856][ T6086]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  457.592886][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  457.592897][ T6086]  f2fs_sync_dirty_inodes+0x30e/0x830
[  457.592915][ T6086]  f2fs_write_checkpoint+0xa3d/0x2710
[  457.592941][ T6086]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  457.592975][ T6086]  kill_f2fs_super+0x2dd/0x700
[  457.592992][ T6086]  ? __pfx_kill_f2fs_super+0x10/0x10
[  457.593008][ T6086]  ? call_rcu+0x64b/0x8b0
[  457.593016][ T6086]  ? lockdep_hardirqs_on+0x7a/0x110
[  457.593033][ T6086]  deactivate_locked_super+0xbc/0x110
[  457.593049][ T6086]  cleanup_mnt+0x3d3/0x460
[  457.593060][ T6086]  task_work_run+0x1d9/0x270
[  457.593075][ T6086]  ? __pfx_task_work_run+0x10/0x10
[  457.593092][ T6086]  exit_to_user_mode_loop+0x1fa/0x730
[  457.593104][ T6086]  ? rcu_is_watching+0x15/0xb0
[  457.593117][ T6086]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  457.593126][ T6086]  do_syscall_64+0x353/0x580
[  457.593137][ T6086]  ? trace_irq_disable+0x3b/0x140
[  457.593152][ T6086]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  457.593160][ T6086] RIP: 0033:0x7f91c5b9f257
[  457.593170][ T6086] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  457.593178][ T6086] RSP: 002b:00007ffcdf6e3ae8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  457.593188][ T6086] RAX: 0000000000000000 RBX: 00007f91c5c3445c RCX: 00007f91c5b9f257
[  457.593194][ T6086] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcdf6e3ba0
[  457.593200][ T6086] RBP: 00007ffcdf6e3ba0 R08: 00007ffcdf6e4ba0 R09: 00000000ffffffff
[  457.593206][ T6086] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcdf6e4c30
[  457.593211][ T6086] R13: 00007f91c5c3445c R14: 000000000006fadd R15: 00007ffcdf6e4c70
[  457.593224][ T6086]  </TASK>
[  457.593228][ T6086] F2FS-fs (loop0): Stopped filesystem due to reason: 3
[  457.609685][T11346] F2FS-fs (loop1): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  457.701634][T11346] F2FS-fs (loop1): Try to recover 1th superblock, ret: 0
[  457.703862][T11346] F2FS-fs (loop1): Mounted with checkpoint version = 48b305e5
[  457.721016][ T6087] CPU: 1 UID: 0 PID: 6087 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  457.721031][ T6087] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  457.721037][ T6087] Call Trace:
[  457.721042][ T6087]  <TASK>
[  457.721047][ T6087]  dump_stack_lvl+0xe8/0x150
[  457.721065][ T6087]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  457.721081][ T6087]  f2fs_write_end_io+0x124b/0x1710
[  457.721103][ T6087]  __submit_merged_bio+0x258/0x6a0
[  457.721113][ T6087]  ? rcu_is_watching+0x15/0xb0
[  457.721131][ T6087]  __submit_merged_write_cond+0x3c9/0x4e0
[  457.721145][ T6087]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  457.721165][ T6087]  f2fs_write_data_pages+0x2a27/0x36f0
[  457.721205][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  457.721237][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  457.721250][ T6087]  ? __bfs+0x153/0x290
[  457.721261][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  457.721276][ T6087]  ? lockdep_unlock+0x5d/0xd0
[  457.721285][ T6087]  ? __lock_acquire+0x13e8/0x2cf0
[  457.721307][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  457.721320][ T6087]  do_writepages+0x338/0x560
[  457.721337][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  457.721348][ T6087]  filemap_fdatawrite+0x1e9/0x2f0
[  457.721363][ T6087]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  457.721392][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  457.721403][ T6087]  f2fs_sync_dirty_inodes+0x30e/0x830
[  457.721422][ T6087]  f2fs_write_checkpoint+0xa3d/0x2710
[  457.721448][ T6087]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  457.721483][ T6087]  kill_f2fs_super+0x2dd/0x700
[  457.721499][ T6087]  ? __pfx_kill_f2fs_super+0x10/0x10
[  457.721516][ T6087]  ? call_rcu+0x64b/0x8b0
[  457.721524][ T6087]  ? lockdep_hardirqs_on+0x7a/0x110
[  457.721541][ T6087]  deactivate_locked_super+0xbc/0x110
[  457.721556][ T6087]  cleanup_mnt+0x3d3/0x460
[  457.721568][ T6087]  task_work_run+0x1d9/0x270
[  457.721606][ T6087]  ? __pfx_task_work_run+0x10/0x10
[  457.721622][ T6087]  exit_to_user_mode_loop+0x1fa/0x730
[  457.721634][ T6087]  ? rcu_is_watching+0x15/0xb0
[  457.721647][ T6087]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  457.721656][ T6087]  do_syscall_64+0x353/0x580
[  457.721666][ T6087]  ? trace_irq_disable+0x3b/0x140
[  457.721681][ T6087]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  457.721689][ T6087] RIP: 0033:0x7fbe5c39f257
[  457.721699][ T6087] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  457.721707][ T6087] RSP: 002b:00007ffd72651a58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  457.721716][ T6087] RAX: 0000000000000000 RBX: 00007fbe5c43445c RCX: 00007fbe5c39f257
[  457.721722][ T6087] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd72651b10
[  457.721728][ T6087] RBP: 00007ffd72651b10 R08: 00007ffd72652b10 R09: 00000000ffffffff
[  457.721734][ T6087] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd72652ba0
[  457.721739][ T6087] R13: 00007fbe5c43445c R14: 000000000006f9d0 R15: 00007ffd72652be0
[  457.721752][ T6087]  </TASK>
[  457.723247][ T6087] F2FS-fs (loop1): Stopped filesystem due to reason: 3
[  458.125747][T11356] loop2: detected capacity change from 0 to 40427
[  458.132936][T11356] F2FS-fs (loop2): Small segment_count (9 < 1 * 24)
[  458.143131][T11356] F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock
[  458.167008][T11358] loop1: detected capacity change from 0 to 40427
[  458.174400][T11354] loop0: detected capacity change from 0 to 40427
[  458.177535][T11358] F2FS-fs (loop1): Small segment_count (9 < 1 * 24)
[  458.179701][T11358] F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock
[  458.198499][T11356] F2FS-fs (loop2): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  458.201609][T11354] F2FS-fs (loop0): Small segment_count (9 < 1 * 24)
[  458.208368][T11354] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
[  458.216734][T11356] F2FS-fs (loop2): Try to recover 1th superblock, ret: 0
[  458.221385][T11356] F2FS-fs (loop2): Mounted with checkpoint version = 48b305e5
[  458.247203][T11358] F2FS-fs (loop1): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  458.253837][T11358] F2FS-fs (loop1): Try to recover 1th superblock, ret: 0
[  458.254175][ T6092] CPU: 1 UID: 0 PID: 6092 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  458.254188][ T6092] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  458.254194][ T6092] Call Trace:
[  458.254199][ T6092]  <TASK>
[  458.254203][ T6092]  dump_stack_lvl+0xe8/0x150
[  458.254221][ T6092]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  458.254237][ T6092]  f2fs_write_end_io+0x124b/0x1710
[  458.254260][ T6092]  __submit_merged_bio+0x258/0x6a0
[  458.254270][ T6092]  ? rcu_is_watching+0x15/0xb0
[  458.254288][ T6092]  __submit_merged_write_cond+0x3c9/0x4e0
[  458.254302][ T6092]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  458.254322][ T6092]  f2fs_write_data_pages+0x2a27/0x36f0
[  458.254349][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  458.254378][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  458.254386][ T6092]  ? __bfs+0x153/0x290
[  458.254397][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  458.254412][ T6092]  ? lockdep_unlock+0x5d/0xd0
[  458.254421][ T6092]  ? __lock_acquire+0x13e8/0x2cf0
[  458.254443][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  458.254455][ T6092]  do_writepages+0x338/0x560
[  458.254472][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  458.254484][ T6092]  filemap_fdatawrite+0x1e9/0x2f0
[  458.254498][ T6092]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  458.254527][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  458.254557][ T6092]  f2fs_sync_dirty_inodes+0x30e/0x830
[  458.254580][ T6092]  f2fs_write_checkpoint+0xa3d/0x2710
[  458.254605][ T6092]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  458.254639][ T6092]  kill_f2fs_super+0x2dd/0x700
[  458.254656][ T6092]  ? __pfx_kill_f2fs_super+0x10/0x10
[  458.254673][ T6092]  ? call_rcu+0x64b/0x8b0
[  458.254680][ T6092]  ? lockdep_hardirqs_on+0x7a/0x110
[  458.254697][ T6092]  deactivate_locked_super+0xbc/0x110
[  458.254711][ T6092]  cleanup_mnt+0x3d3/0x460
[  458.254723][ T6092]  task_work_run+0x1d9/0x270
[  458.254739][ T6092]  ? __pfx_task_work_run+0x10/0x10
[  458.254756][ T6092]  exit_to_user_mode_loop+0x1fa/0x730
[  458.254768][ T6092]  ? rcu_is_watching+0x15/0xb0
[  458.254780][ T6092]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  458.254790][ T6092]  do_syscall_64+0x353/0x580
[  458.254800][ T6092]  ? trace_irq_disable+0x3b/0x140
[  458.254814][ T6092]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  458.254823][ T6092] RIP: 0033:0x7f835259f257
[  458.254833][ T6092] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  458.254840][ T6092] RSP: 002b:00007fffacbabcb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  458.254850][ T6092] RAX: 0000000000000000 RBX: 00007f835263445c RCX: 00007f835259f257
[  458.254856][ T6092] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffacbabd70
[  458.254861][ T6092] RBP: 00007fffacbabd70 R08: 00007fffacbacd70 R09: 00000000ffffffff
[  458.254867][ T6092] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffacbace00
[  458.254873][ T6092] R13: 00007f835263445c R14: 000000000006fd7f R15: 00007fffacbace40
[  458.254886][ T6092]  </TASK>
[  458.254890][ T6092] F2FS-fs (loop2): Stopped filesystem due to reason: 3
[  458.256027][T11358] F2FS-fs (loop1): Mounted with checkpoint version = 48b305e5
[  458.261683][T11354] F2FS-fs (loop0): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  458.358032][T11354] F2FS-fs (loop0): Try to recover 1th superblock, ret: 0
[  458.360311][T11354] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5
[  458.368015][ T6087] CPU: 0 UID: 0 PID: 6087 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  458.368030][ T6087] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  458.368036][ T6087] Call Trace:
[  458.368040][ T6087]  <TASK>
[  458.368045][ T6087]  dump_stack_lvl+0xe8/0x150
[  458.368064][ T6087]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  458.368079][ T6087]  f2fs_write_end_io+0x124b/0x1710
[  458.368103][ T6087]  __submit_merged_bio+0x258/0x6a0
[  458.368113][ T6087]  ? rcu_is_watching+0x15/0xb0
[  458.368130][ T6087]  __submit_merged_write_cond+0x3c9/0x4e0
[  458.368144][ T6087]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  458.368164][ T6087]  f2fs_write_data_pages+0x2a27/0x36f0
[  458.368191][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  458.368221][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  458.368229][ T6087]  ? __bfs+0x153/0x290
[  458.368240][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  458.368255][ T6087]  ? lockdep_unlock+0x5d/0xd0
[  458.368264][ T6087]  ? __lock_acquire+0x13e8/0x2cf0
[  458.368286][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  458.368298][ T6087]  do_writepages+0x338/0x560
[  458.368316][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  458.368327][ T6087]  filemap_fdatawrite+0x1e9/0x2f0
[  458.368342][ T6087]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  458.368385][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  458.368398][ T6087]  f2fs_sync_dirty_inodes+0x30e/0x830
[  458.368418][ T6087]  f2fs_write_checkpoint+0xa3d/0x2710
[  458.368444][ T6087]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  458.368478][ T6087]  kill_f2fs_super+0x2dd/0x700
[  458.368495][ T6087]  ? __pfx_kill_f2fs_super+0x10/0x10
[  458.368512][ T6087]  ? call_rcu+0x64b/0x8b0
[  458.368520][ T6087]  ? lockdep_hardirqs_on+0x7a/0x110
[  458.368558][ T6087]  deactivate_locked_super+0xbc/0x110
[  458.368574][ T6087]  cleanup_mnt+0x3d3/0x460
[  458.368586][ T6087]  task_work_run+0x1d9/0x270
[  458.368601][ T6087]  ? __pfx_task_work_run+0x10/0x10
[  458.368618][ T6087]  exit_to_user_mode_loop+0x1fa/0x730
[  458.368630][ T6087]  ? rcu_is_watching+0x15/0xb0
[  458.368643][ T6087]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  458.368652][ T6087]  do_syscall_64+0x353/0x580
[  458.368662][ T6087]  ? trace_irq_disable+0x3b/0x140
[  458.368676][ T6087]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  458.368685][ T6087] RIP: 0033:0x7fbe5c39f257
[  458.368695][ T6087] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  458.368702][ T6087] RSP: 002b:00007ffd72651a58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  458.368712][ T6087] RAX: 0000000000000000 RBX: 00007fbe5c43445c RCX: 00007fbe5c39f257
[  458.368718][ T6087] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd72651b10
[  458.368724][ T6087] RBP: 00007ffd72651b10 R08: 00007ffd72652b10 R09: 00000000ffffffff
[  458.368729][ T6087] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd72652ba0
[  458.368735][ T6087] R13: 00007fbe5c43445c R14: 000000000006fdbd R15: 00007ffd72652be0
[  458.368748][ T6087]  </TASK>
[  458.411759][ T6087] F2FS-fs (loop1): Stopped filesystem due to reason: 3
[  458.464794][ T6086] CPU: 0 UID: 0 PID: 6086 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  458.464809][ T6086] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  458.464815][ T6086] Call Trace:
[  458.464820][ T6086]  <TASK>
[  458.464825][ T6086]  dump_stack_lvl+0xe8/0x150
[  458.464844][ T6086]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  458.464860][ T6086]  f2fs_write_end_io+0x124b/0x1710
[  458.464884][ T6086]  __submit_merged_bio+0x258/0x6a0
[  458.464895][ T6086]  ? rcu_is_watching+0x15/0xb0
[  458.464912][ T6086]  __submit_merged_write_cond+0x3c9/0x4e0
[  458.464927][ T6086]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  458.464948][ T6086]  f2fs_write_data_pages+0x2a27/0x36f0
[  458.464960][ T6086]  ? __lock_acquire+0x683/0x2cf0
[  458.464988][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  458.465028][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  458.465037][ T6086]  ? __bfs+0x153/0x290
[  458.465047][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  458.465063][ T6086]  ? lockdep_unlock+0x5d/0xd0
[  458.465092][ T6086]  ? __lock_acquire+0x13e8/0x2cf0
[  458.465116][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  458.465129][ T6086]  do_writepages+0x338/0x560
[  458.465147][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  458.465159][ T6086]  filemap_fdatawrite+0x1e9/0x2f0
[  458.465174][ T6086]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  458.465207][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  458.465218][ T6086]  f2fs_sync_dirty_inodes+0x30e/0x830
[  458.465238][ T6086]  f2fs_write_checkpoint+0xa3d/0x2710
[  458.465266][ T6086]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  458.465303][ T6086]  kill_f2fs_super+0x2dd/0x700
[  458.465321][ T6086]  ? __pfx_kill_f2fs_super+0x10/0x10
[  458.465338][ T6086]  ? call_rcu+0x64b/0x8b0
[  458.465346][ T6086]  ? lockdep_hardirqs_on+0x7a/0x110
[  458.465364][ T6086]  deactivate_locked_super+0xbc/0x110
[  458.465379][ T6086]  cleanup_mnt+0x3d3/0x460
[  458.465391][ T6086]  task_work_run+0x1d9/0x270
[  458.465406][ T6086]  ? __pfx_task_work_run+0x10/0x10
[  458.465423][ T6086]  exit_to_user_mode_loop+0x1fa/0x730
[  458.465436][ T6086]  ? rcu_is_watching+0x15/0xb0
[  458.465448][ T6086]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  458.465458][ T6086]  do_syscall_64+0x353/0x580
[  458.465468][ T6086]  ? trace_irq_disable+0x3b/0x140
[  458.465483][ T6086]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  458.465492][ T6086] RIP: 0033:0x7f91c5b9f257
[  458.465502][ T6086] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  458.465510][ T6086] RSP: 002b:00007ffcdf6e3ae8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  458.465520][ T6086] RAX: 0000000000000000 RBX: 00007f91c5c3445c RCX: 00007f91c5b9f257
[  458.465552][ T6086] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcdf6e3ba0
[  458.465558][ T6086] RBP: 00007ffcdf6e3ba0 R08: 00007ffcdf6e4ba0 R09: 00000000ffffffff
[  458.465564][ T6086] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcdf6e4c30
[  458.465569][ T6086] R13: 00007f91c5c3445c R14: 000000000006fe01 R15: 00007ffcdf6e4c70
[  458.465584][ T6086]  </TASK>
[  458.504349][ T6086] F2FS-fs (loop0): Stopped filesystem due to reason: 3
[  458.883069][T11368] F2FS-fs (loop0): Small segment_count (9 < 1 * 24)
[  458.885214][T11368] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
[  458.914067][T11366] F2FS-fs (loop2): Small segment_count (9 < 1 * 24)
[  458.919761][T11366] F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock
[  458.947056][T11368] F2FS-fs (loop0): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  458.962032][T11368] F2FS-fs (loop0): Try to recover 1th superblock, ret: 0
[  458.964585][T11368] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5
[  458.967558][T11366] F2FS-fs (loop2): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  458.973321][T11366] F2FS-fs (loop2): Try to recover 1th superblock, ret: 0
[  458.975456][T11366] F2FS-fs (loop2): Mounted with checkpoint version = 48b305e5
[  458.985879][ T6086] CPU: 0 UID: 0 PID: 6086 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  458.985894][ T6086] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  458.985900][ T6086] Call Trace:
[  458.985904][ T6086]  <TASK>
[  458.985908][ T6086]  dump_stack_lvl+0xe8/0x150
[  458.985926][ T6086]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  458.985941][ T6086]  f2fs_write_end_io+0x124b/0x1710
[  458.985964][ T6086]  __submit_merged_bio+0x258/0x6a0
[  458.985981][ T6086]  ? rcu_is_watching+0x15/0xb0
[  458.985999][ T6086]  __submit_merged_write_cond+0x3c9/0x4e0
[  458.986013][ T6086]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  458.986033][ T6086]  f2fs_write_data_pages+0x2a27/0x36f0
[  458.986045][ T6086]  ? __lock_acquire+0x683/0x2cf0
[  458.986070][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  458.986100][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  458.986107][ T6086]  ? __bfs+0x153/0x290
[  458.986118][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  458.986133][ T6086]  ? lockdep_unlock+0x5d/0xd0
[  458.986162][ T6086]  ? __lock_acquire+0x13e8/0x2cf0
[  458.986184][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  458.986196][ T6086]  do_writepages+0x338/0x560
[  458.986213][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  458.986225][ T6086]  filemap_fdatawrite+0x1e9/0x2f0
[  458.986239][ T6086]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  458.986269][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  458.986280][ T6086]  f2fs_sync_dirty_inodes+0x30e/0x830
[  458.986299][ T6086]  f2fs_write_checkpoint+0xa3d/0x2710
[  458.986325][ T6086]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  458.986359][ T6086]  kill_f2fs_super+0x2dd/0x700
[  458.986375][ T6086]  ? __pfx_kill_f2fs_super+0x10/0x10
[  458.986392][ T6086]  ? call_rcu+0x64b/0x8b0
[  458.986400][ T6086]  ? lockdep_hardirqs_on+0x7a/0x110
[  458.986416][ T6086]  deactivate_locked_super+0xbc/0x110
[  458.986430][ T6086]  cleanup_mnt+0x3d3/0x460
[  458.986442][ T6086]  task_work_run+0x1d9/0x270
[  458.986457][ T6086]  ? __pfx_task_work_run+0x10/0x10
[  458.986473][ T6086]  exit_to_user_mode_loop+0x1fa/0x730
[  458.986485][ T6086]  ? rcu_is_watching+0x15/0xb0
[  458.986520][ T6086]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  458.986530][ T6086]  do_syscall_64+0x353/0x580
[  458.986541][ T6086]  ? trace_irq_disable+0x3b/0x140
[  458.986555][ T6086]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  458.986563][ T6086] RIP: 0033:0x7f91c5b9f257
[  458.986573][ T6086] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  458.986580][ T6086] RSP: 002b:00007ffcdf6e3ae8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  458.986590][ T6086] RAX: 0000000000000000 RBX: 00007f91c5c3445c RCX: 00007f91c5b9f257
[  458.986596][ T6086] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcdf6e3ba0
[  458.986601][ T6086] RBP: 00007ffcdf6e3ba0 R08: 00007ffcdf6e4ba0 R09: 00000000ffffffff
[  458.986607][ T6086] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcdf6e4c30
[  458.986612][ T6086] R13: 00007f91c5c3445c R14: 000000000007005d R15: 00007ffcdf6e4c70
[  458.986626][ T6086]  </TASK>
[  458.987513][ T6086] F2FS-fs (loop0): Stopped filesystem due to reason: 3
[  459.027134][T11370] F2FS-fs (loop1): Small segment_count (9 < 1 * 24)
[  459.089618][T11370] F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock
[  459.093444][ T6092] CPU: 0 UID: 0 PID: 6092 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  459.093458][ T6092] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  459.093466][ T6092] Call Trace:
[  459.093471][ T6092]  <TASK>
[  459.093475][ T6092]  dump_stack_lvl+0xe8/0x150
[  459.093526][ T6092]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  459.093541][ T6092]  f2fs_write_end_io+0x124b/0x1710
[  459.093563][ T6092]  __submit_merged_bio+0x258/0x6a0
[  459.093574][ T6092]  ? rcu_is_watching+0x15/0xb0
[  459.093591][ T6092]  __submit_merged_write_cond+0x3c9/0x4e0
[  459.093605][ T6092]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  459.093625][ T6092]  f2fs_write_data_pages+0x2a27/0x36f0
[  459.093652][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  459.093681][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  459.093689][ T6092]  ? __bfs+0x153/0x290
[  459.093700][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  459.093715][ T6092]  ? lockdep_unlock+0x5d/0xd0
[  459.093724][ T6092]  ? __lock_acquire+0x13e8/0x2cf0
[  459.093746][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  459.093758][ T6092]  do_writepages+0x338/0x560
[  459.093775][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  459.093787][ T6092]  filemap_fdatawrite+0x1e9/0x2f0
[  459.093801][ T6092]  ? __pfx_filemap_fdatawrite+0x10/0x10
2026/08/02 08:15:09 executed programs: 1270
[  459.093831][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  459.093842][ T6092]  f2fs_sync_dirty_inodes+0x30e/0x830
[  459.093860][ T6092]  f2fs_write_checkpoint+0xa3d/0x2710
[  459.093886][ T6092]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  459.093920][ T6092]  kill_f2fs_super+0x2dd/0x700
[  459.093937][ T6092]  ? __pfx_kill_f2fs_super+0x10/0x10
[  459.093954][ T6092]  ? call_rcu+0x64b/0x8b0
[  459.093968][ T6092]  ? lockdep_hardirqs_on+0x7a/0x110
[  459.093985][ T6092]  deactivate_locked_super+0xbc/0x110
[  459.094000][ T6092]  cleanup_mnt+0x3d3/0x460
[  459.094011][ T6092]  task_work_run+0x1d9/0x270
[  459.094026][ T6092]  ? __pfx_task_work_run+0x10/0x10
[  459.094043][ T6092]  exit_to_user_mode_loop+0x1fa/0x730
[  459.094055][ T6092]  ? rcu_is_watching+0x15/0xb0
[  459.094068][ T6092]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  459.094077][ T6092]  do_syscall_64+0x353/0x580
[  459.094088][ T6092]  ? trace_irq_disable+0x3b/0x140
[  459.094102][ T6092]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  459.094110][ T6092] RIP: 0033:0x7f835259f257
[  459.094120][ T6092] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  459.094128][ T6092] RSP: 002b:00007fffacbabcb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  459.094138][ T6092] RAX: 0000000000000000 RBX: 00007f835263445c RCX: 00007f835259f257
[  459.094144][ T6092] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffacbabd70
[  459.094149][ T6092] RBP: 00007fffacbabd70 R08: 00007fffacbacd70 R09: 00000000ffffffff
[  459.094154][ T6092] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffacbace00
[  459.094160][ T6092] R13: 00007f835263445c R14: 0000000000070094 R15: 00007fffacbace40
[  459.094173][ T6092]  </TASK>
[  459.120114][T11370] F2FS-fs (loop1): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  459.122100][ T6092] F2FS-fs (loop2): Stopped filesystem due to reason: 3
[  459.126337][T11370] F2FS-fs (loop1): Try to recover 1th superblock, ret: 0
[  459.202871][T11370] F2FS-fs (loop1): Mounted with checkpoint version = 48b305e5
[  459.222818][ T6087] CPU: 1 UID: 0 PID: 6087 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  459.222836][ T6087] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  459.222843][ T6087] Call Trace:
[  459.222847][ T6087]  <TASK>
[  459.222852][ T6087]  dump_stack_lvl+0xe8/0x150
[  459.222873][ T6087]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  459.222888][ T6087]  f2fs_write_end_io+0x124b/0x1710
[  459.222917][ T6087]  __submit_merged_bio+0x258/0x6a0
[  459.222928][ T6087]  ? rcu_is_watching+0x15/0xb0
[  459.222945][ T6087]  __submit_merged_write_cond+0x3c9/0x4e0
[  459.222959][ T6087]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  459.222979][ T6087]  f2fs_write_data_pages+0x2a27/0x36f0
[  459.223006][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  459.223036][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  459.223043][ T6087]  ? __bfs+0x153/0x290
[  459.223054][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  459.223069][ T6087]  ? lockdep_unlock+0x5d/0xd0
[  459.223078][ T6087]  ? __lock_acquire+0x13e8/0x2cf0
[  459.223100][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  459.223112][ T6087]  do_writepages+0x338/0x560
[  459.223129][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  459.223140][ T6087]  filemap_fdatawrite+0x1e9/0x2f0
[  459.223154][ T6087]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  459.223185][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  459.223196][ T6087]  f2fs_sync_dirty_inodes+0x30e/0x830
[  459.223215][ T6087]  f2fs_write_checkpoint+0xa3d/0x2710
[  459.223241][ T6087]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  459.223275][ T6087]  kill_f2fs_super+0x2dd/0x700
[  459.223291][ T6087]  ? __pfx_kill_f2fs_super+0x10/0x10
[  459.223309][ T6087]  ? call_rcu+0x64b/0x8b0
[  459.223316][ T6087]  ? lockdep_hardirqs_on+0x7a/0x110
[  459.223333][ T6087]  deactivate_locked_super+0xbc/0x110
[  459.223348][ T6087]  cleanup_mnt+0x3d3/0x460
[  459.223359][ T6087]  task_work_run+0x1d9/0x270
[  459.223375][ T6087]  ? __pfx_task_work_run+0x10/0x10
[  459.223392][ T6087]  exit_to_user_mode_loop+0x1fa/0x730
[  459.223404][ T6087]  ? rcu_is_watching+0x15/0xb0
[  459.223417][ T6087]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  459.223426][ T6087]  do_syscall_64+0x353/0x580
[  459.223436][ T6087]  ? trace_irq_disable+0x3b/0x140
[  459.223451][ T6087]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  459.223459][ T6087] RIP: 0033:0x7fbe5c39f257
[  459.223469][ T6087] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  459.223506][ T6087] RSP: 002b:00007ffd72651a58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  459.223517][ T6087] RAX: 0000000000000000 RBX: 00007fbe5c43445c RCX: 00007fbe5c39f257
[  459.223523][ T6087] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd72651b10
[  459.223529][ T6087] RBP: 00007ffd72651b10 R08: 00007ffd72652b10 R09: 00000000ffffffff
[  459.223535][ T6087] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd72652ba0
[  459.223540][ T6087] R13: 00007fbe5c43445c R14: 000000000007014c R15: 00007ffd72652be0
[  459.223554][ T6087]  </TASK>
[  459.223559][ T6087] F2FS-fs (loop1): Stopped filesystem due to reason: 3
[  459.604387][T11380] F2FS-fs (loop1): Small segment_count (9 < 1 * 24)
[  459.606501][T11380] F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock
[  459.638442][T11380] F2FS-fs (loop1): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  459.644993][T11380] F2FS-fs (loop1): Try to recover 1th superblock, ret: 0
[  459.649900][T11380] F2FS-fs (loop1): Mounted with checkpoint version = 48b305e5
[  459.663376][T11378] F2FS-fs (loop2): Small segment_count (9 < 1 * 24)
[  459.668416][ T6087] CPU: 1 UID: 0 PID: 6087 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  459.668431][ T6087] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  459.668437][ T6087] Call Trace:
[  459.668471][ T6087]  <TASK>
[  459.668478][ T6087]  dump_stack_lvl+0xe8/0x150
[  459.668496][ T6087]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  459.668512][ T6087]  f2fs_write_end_io+0x124b/0x1710
[  459.668535][ T6087]  __submit_merged_bio+0x258/0x6a0
[  459.668545][ T6087]  ? rcu_is_watching+0x15/0xb0
[  459.668562][ T6087]  __submit_merged_write_cond+0x3c9/0x4e0
[  459.668576][ T6087]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  459.668596][ T6087]  f2fs_write_data_pages+0x2a27/0x36f0
[  459.668608][ T6087]  ? __lock_acquire+0x683/0x2cf0
[  459.668634][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  459.668664][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  459.668671][ T6087]  ? __bfs+0x153/0x290
[  459.668682][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  459.668696][ T6087]  ? lockdep_unlock+0x5d/0xd0
[  459.668705][ T6087]  ? __lock_acquire+0x13e8/0x2cf0
[  459.668727][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  459.668739][ T6087]  do_writepages+0x338/0x560
[  459.668756][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  459.668767][ T6087]  filemap_fdatawrite+0x1e9/0x2f0
[  459.668782][ T6087]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  459.668812][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  459.668838][ T6087]  f2fs_sync_dirty_inodes+0x30e/0x830
[  459.668860][ T6087]  f2fs_write_checkpoint+0xa3d/0x2710
[  459.668886][ T6087]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  459.668920][ T6087]  kill_f2fs_super+0x2dd/0x700
[  459.668936][ T6087]  ? __pfx_kill_f2fs_super+0x10/0x10
[  459.668953][ T6087]  ? call_rcu+0x64b/0x8b0
[  459.668961][ T6087]  ? lockdep_hardirqs_on+0x7a/0x110
[  459.668983][ T6087]  deactivate_locked_super+0xbc/0x110
[  459.668991][T11378] F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock
[  459.668997][ T6087]  cleanup_mnt+0x3d3/0x460
[  459.669009][ T6087]  task_work_run+0x1d9/0x270
[  459.669024][ T6087]  ? __pfx_task_work_run+0x10/0x10
[  459.669041][ T6087]  exit_to_user_mode_loop+0x1fa/0x730
[  459.669053][ T6087]  ? rcu_is_watching+0x15/0xb0
[  459.669065][ T6087]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  459.669075][ T6087]  do_syscall_64+0x353/0x580
[  459.669086][ T6087]  ? trace_irq_disable+0x3b/0x140
[  459.669101][ T6087]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  459.669109][ T6087] RIP: 0033:0x7fbe5c39f257
[  459.669119][ T6087] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  459.669127][ T6087] RSP: 002b:00007ffd72651a58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  459.669137][ T6087] RAX: 0000000000000000 RBX: 00007fbe5c43445c RCX: 00007fbe5c39f257
[  459.669143][ T6087] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd72651b10
[  459.669148][ T6087] RBP: 00007ffd72651b10 R08: 00007ffd72652b10 R09: 00000000ffffffff
[  459.669154][ T6087] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd72652ba0
[  459.669160][ T6087] R13: 00007fbe5c43445c R14: 0000000000070303 R15: 00007ffd72652be0
[  459.669173][ T6087]  </TASK>
[  459.671810][ T6087] F2FS-fs (loop1): Stopped filesystem due to reason: 3
[  459.828596][T11378] F2FS-fs (loop2): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  459.834533][T11378] F2FS-fs (loop2): Try to recover 1th superblock, ret: 0
[  459.836744][T11378] F2FS-fs (loop2): Mounted with checkpoint version = 48b305e5
[  459.856358][ T6092] CPU: 0 UID: 0 PID: 6092 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  459.856374][ T6092] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  459.856380][ T6092] Call Trace:
[  459.856385][ T6092]  <TASK>
[  459.856389][ T6092]  dump_stack_lvl+0xe8/0x150
[  459.856409][ T6092]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  459.856425][ T6092]  f2fs_write_end_io+0x124b/0x1710
[  459.856479][ T6092]  __submit_merged_bio+0x258/0x6a0
[  459.856489][ T6092]  ? rcu_is_watching+0x15/0xb0
[  459.856506][ T6092]  __submit_merged_write_cond+0x3c9/0x4e0
[  459.856521][ T6092]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  459.856542][ T6092]  f2fs_write_data_pages+0x2a27/0x36f0
[  459.856571][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  459.856602][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  459.856610][ T6092]  ? __bfs+0x153/0x290
[  459.856621][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  459.856637][ T6092]  ? lockdep_unlock+0x5d/0xd0
[  459.856647][ T6092]  ? __lock_acquire+0x13e8/0x2cf0
[  459.856670][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  459.856682][ T6092]  do_writepages+0x338/0x560
[  459.856700][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  459.856712][ T6092]  filemap_fdatawrite+0x1e9/0x2f0
[  459.856726][ T6092]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  459.856758][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  459.856769][ T6092]  f2fs_sync_dirty_inodes+0x30e/0x830
[  459.856790][ T6092]  f2fs_write_checkpoint+0xa3d/0x2710
[  459.856817][ T6092]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  459.856854][ T6092]  kill_f2fs_super+0x2dd/0x700
[  459.856871][ T6092]  ? __pfx_kill_f2fs_super+0x10/0x10
[  459.856889][ T6092]  ? call_rcu+0x64b/0x8b0
[  459.856897][ T6092]  ? lockdep_hardirqs_on+0x7a/0x110
[  459.856919][ T6092]  deactivate_locked_super+0xbc/0x110
[  459.856935][ T6092]  cleanup_mnt+0x3d3/0x460
[  459.856947][ T6092]  task_work_run+0x1d9/0x270
[  459.856963][ T6092]  ? __pfx_task_work_run+0x10/0x10
[  459.856980][ T6092]  exit_to_user_mode_loop+0x1fa/0x730
[  459.856992][ T6092]  ? rcu_is_watching+0x15/0xb0
[  459.857005][ T6092]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  459.857015][ T6092]  do_syscall_64+0x353/0x580
[  459.857026][ T6092]  ? trace_irq_disable+0x3b/0x140
[  459.857040][ T6092]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  459.857049][ T6092] RIP: 0033:0x7f835259f257
[  459.857059][ T6092] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  459.857067][ T6092] RSP: 002b:00007fffacbabcb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  459.857078][ T6092] RAX: 0000000000000000 RBX: 00007f835263445c RCX: 00007f835259f257
[  459.857099][ T6092] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffacbabd70
[  459.857105][ T6092] RBP: 00007fffacbabd70 R08: 00007fffacbacd70 R09: 00000000ffffffff
[  459.857110][ T6092] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffacbace00
[  459.857115][ T6092] R13: 00007f835263445c R14: 00000000000703c1 R15: 00007fffacbace40
[  459.857130][ T6092]  </TASK>
[  459.860190][ T6092] F2FS-fs (loop2): Stopped filesystem due to reason: 3
[  459.879922][T11382] F2FS-fs (loop0): Small segment_count (9 < 1 * 24)
[  459.980906][T11382] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
[  460.042322][T11382] F2FS-fs (loop0): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  460.058261][T11382] F2FS-fs (loop0): Try to recover 1th superblock, ret: 0
[  460.063639][T11382] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5
[  460.095145][ T6086] CPU: 0 UID: 0 PID: 6086 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  460.095162][ T6086] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  460.095168][ T6086] Call Trace:
[  460.095173][ T6086]  <TASK>
[  460.095177][ T6086]  dump_stack_lvl+0xe8/0x150
[  460.095197][ T6086]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  460.095212][ T6086]  f2fs_write_end_io+0x124b/0x1710
[  460.095235][ T6086]  __submit_merged_bio+0x258/0x6a0
[  460.095245][ T6086]  ? rcu_is_watching+0x15/0xb0
[  460.095263][ T6086]  __submit_merged_write_cond+0x3c9/0x4e0
[  460.095277][ T6086]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  460.095311][ T6086]  f2fs_write_data_pages+0x2a27/0x36f0
[  460.095325][ T6086]  ? __lock_acquire+0x683/0x2cf0
[  460.095350][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  460.095380][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  460.095388][ T6086]  ? __bfs+0x153/0x290
[  460.095398][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  460.095433][ T6086]  ? lockdep_unlock+0x5d/0xd0
[  460.095444][ T6086]  ? __lock_acquire+0x13e8/0x2cf0
[  460.095466][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  460.095478][ T6086]  do_writepages+0x338/0x560
[  460.095496][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  460.095507][ T6086]  filemap_fdatawrite+0x1e9/0x2f0
[  460.095522][ T6086]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  460.095552][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  460.095563][ T6086]  f2fs_sync_dirty_inodes+0x30e/0x830
[  460.095583][ T6086]  f2fs_write_checkpoint+0xa3d/0x2710
[  460.095610][ T6086]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  460.095644][ T6086]  kill_f2fs_super+0x2dd/0x700
[  460.095661][ T6086]  ? __pfx_kill_f2fs_super+0x10/0x10
[  460.095678][ T6086]  ? call_rcu+0x64b/0x8b0
[  460.095685][ T6086]  ? lockdep_hardirqs_on+0x7a/0x110
[  460.095702][ T6086]  deactivate_locked_super+0xbc/0x110
[  460.095717][ T6086]  cleanup_mnt+0x3d3/0x460
[  460.095730][ T6086]  task_work_run+0x1d9/0x270
[  460.095745][ T6086]  ? __pfx_task_work_run+0x10/0x10
[  460.095761][ T6086]  exit_to_user_mode_loop+0x1fa/0x730
[  460.095773][ T6086]  ? rcu_is_watching+0x15/0xb0
[  460.095786][ T6086]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  460.095795][ T6086]  do_syscall_64+0x353/0x580
[  460.095805][ T6086]  ? trace_irq_disable+0x3b/0x140
[  460.095820][ T6086]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  460.095828][ T6086] RIP: 0033:0x7f91c5b9f257
[  460.095838][ T6086] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  460.095846][ T6086] RSP: 002b:00007ffcdf6e3ae8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  460.095856][ T6086] RAX: 0000000000000000 RBX: 00007f91c5c3445c RCX: 00007f91c5b9f257
[  460.095862][ T6086] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcdf6e3ba0
[  460.095867][ T6086] RBP: 00007ffcdf6e3ba0 R08: 00007ffcdf6e4ba0 R09: 00000000ffffffff
[  460.095873][ T6086] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcdf6e4c30
[  460.095879][ T6086] R13: 00007f91c5c3445c R14: 00000000000704b1 R15: 00007ffcdf6e4c70
[  460.095898][ T6086]  </TASK>
[  460.095938][ T6086] F2FS-fs (loop0): Stopped filesystem due to reason: 3
[  460.237708][T11388] F2FS-fs (loop1): Small segment_count (9 < 1 * 24)
[  460.242287][T11388] F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock
[  460.276392][T11388] F2FS-fs (loop1): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  460.283771][T11388] F2FS-fs (loop1): Try to recover 1th superblock, ret: 0
[  460.286015][T11388] F2FS-fs (loop1): Mounted with checkpoint version = 48b305e5
[  460.301568][ T6087] CPU: 1 UID: 0 PID: 6087 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  460.301585][ T6087] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  460.301591][ T6087] Call Trace:
[  460.301596][ T6087]  <TASK>
[  460.301601][ T6087]  dump_stack_lvl+0xe8/0x150
[  460.301621][ T6087]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  460.301636][ T6087]  f2fs_write_end_io+0x124b/0x1710
[  460.301681][ T6087]  __submit_merged_bio+0x258/0x6a0
[  460.301692][ T6087]  ? rcu_is_watching+0x15/0xb0
[  460.301709][ T6087]  __submit_merged_write_cond+0x3c9/0x4e0
[  460.301723][ T6087]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  460.301743][ T6087]  f2fs_write_data_pages+0x2a27/0x36f0
[  460.301755][ T6087]  ? __lock_acquire+0x683/0x2cf0
[  460.301781][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  460.301811][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  460.301818][ T6087]  ? __bfs+0x153/0x290
[  460.301828][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  460.301843][ T6087]  ? lockdep_unlock+0x5d/0xd0
[  460.301852][ T6087]  ? __lock_acquire+0x13e8/0x2cf0
[  460.301873][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  460.301885][ T6087]  do_writepages+0x338/0x560
[  460.301902][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  460.301913][ T6087]  filemap_fdatawrite+0x1e9/0x2f0
[  460.301927][ T6087]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  460.301956][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  460.301967][ T6087]  f2fs_sync_dirty_inodes+0x30e/0x830
[  460.301985][ T6087]  f2fs_write_checkpoint+0xa3d/0x2710
[  460.302011][ T6087]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  460.302051][ T6087]  kill_f2fs_super+0x2dd/0x700
[  460.302067][ T6087]  ? __pfx_kill_f2fs_super+0x10/0x10
[  460.302083][ T6087]  ? call_rcu+0x64b/0x8b0
[  460.302091][ T6087]  ? lockdep_hardirqs_on+0x7a/0x110
[  460.302107][ T6087]  deactivate_locked_super+0xbc/0x110
[  460.302122][ T6087]  cleanup_mnt+0x3d3/0x460
[  460.302134][ T6087]  task_work_run+0x1d9/0x270
[  460.302149][ T6087]  ? __pfx_task_work_run+0x10/0x10
[  460.302165][ T6087]  exit_to_user_mode_loop+0x1fa/0x730
[  460.302177][ T6087]  ? rcu_is_watching+0x15/0xb0
[  460.302189][ T6087]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  460.302198][ T6087]  do_syscall_64+0x353/0x580
[  460.302208][ T6087]  ? trace_irq_disable+0x3b/0x140
[  460.302223][ T6087]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  460.302232][ T6087] RIP: 0033:0x7fbe5c39f257
[  460.302242][ T6087] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  460.302249][ T6087] RSP: 002b:00007ffd72651a58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  460.302260][ T6087] RAX: 0000000000000000 RBX: 00007fbe5c43445c RCX: 00007fbe5c39f257
[  460.302267][ T6087] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd72651b10
[  460.302272][ T6087] RBP: 00007ffd72651b10 R08: 00007ffd72652b10 R09: 00000000ffffffff
[  460.302278][ T6087] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd72652ba0
[  460.302283][ T6087] R13: 00007fbe5c43445c R14: 000000000007040b R15: 00007ffd72652be0
[  460.302296][ T6087]  </TASK>
[  460.303093][ T6087] F2FS-fs (loop1): Stopped filesystem due to reason: 3
[  460.353474][T11392] F2FS-fs (loop2): Small segment_count (9 < 1 * 24)
[  460.418253][T11392] F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock
[  460.489845][T11392] F2FS-fs (loop2): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  460.497429][T11392] F2FS-fs (loop2): Try to recover 1th superblock, ret: 0
[  460.507525][T11392] F2FS-fs (loop2): Mounted with checkpoint version = 48b305e5
[  460.557944][ T6092] CPU: 0 UID: 0 PID: 6092 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  460.557962][ T6092] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  460.557968][ T6092] Call Trace:
[  460.557973][ T6092]  <TASK>
[  460.557977][ T6092]  dump_stack_lvl+0xe8/0x150
[  460.557997][ T6092]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  460.558013][ T6092]  f2fs_write_end_io+0x124b/0x1710
[  460.558037][ T6092]  __submit_merged_bio+0x258/0x6a0
[  460.558047][ T6092]  ? rcu_is_watching+0x15/0xb0
[  460.558065][ T6092]  __submit_merged_write_cond+0x3c9/0x4e0
[  460.558081][ T6092]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  460.558101][ T6092]  f2fs_write_data_pages+0x2a27/0x36f0
[  460.558113][ T6092]  ? __lock_acquire+0x683/0x2cf0
[  460.558140][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  460.558172][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  460.558180][ T6092]  ? __bfs+0x153/0x290
[  460.558190][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  460.558206][ T6092]  ? lockdep_unlock+0x5d/0xd0
[  460.558215][ T6092]  ? __lock_acquire+0x13e8/0x2cf0
[  460.558238][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  460.558250][ T6092]  do_writepages+0x338/0x560
[  460.558268][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  460.558280][ T6092]  filemap_fdatawrite+0x1e9/0x2f0
[  460.558294][ T6092]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  460.558348][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  460.558359][ T6092]  f2fs_sync_dirty_inodes+0x30e/0x830
[  460.558379][ T6092]  f2fs_write_checkpoint+0xa3d/0x2710
[  460.558430][ T6092]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  460.558467][ T6092]  kill_f2fs_super+0x2dd/0x700
[  460.558484][ T6092]  ? __pfx_kill_f2fs_super+0x10/0x10
[  460.558502][ T6092]  ? call_rcu+0x64b/0x8b0
[  460.558509][ T6092]  ? lockdep_hardirqs_on+0x7a/0x110
[  460.558527][ T6092]  deactivate_locked_super+0xbc/0x110
[  460.558542][ T6092]  cleanup_mnt+0x3d3/0x460
[  460.558554][ T6092]  task_work_run+0x1d9/0x270
[  460.558570][ T6092]  ? __pfx_task_work_run+0x10/0x10
[  460.558587][ T6092]  exit_to_user_mode_loop+0x1fa/0x730
[  460.558599][ T6092]  ? rcu_is_watching+0x15/0xb0
[  460.558612][ T6092]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  460.558622][ T6092]  do_syscall_64+0x353/0x580
[  460.558632][ T6092]  ? trace_irq_disable+0x3b/0x140
[  460.558647][ T6092]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  460.558655][ T6092] RIP: 0033:0x7f835259f257
[  460.558666][ T6092] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  460.558674][ T6092] RSP: 002b:00007fffacbabcb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  460.558684][ T6092] RAX: 0000000000000000 RBX: 00007f835263445c RCX: 00007f835259f257
[  460.558689][ T6092] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffacbabd70
[  460.558695][ T6092] RBP: 00007fffacbabd70 R08: 00007fffacbacd70 R09: 00000000ffffffff
[  460.558701][ T6092] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffacbace00
[  460.558706][ T6092] R13: 00007f835263445c R14: 0000000000070664 R15: 00007fffacbace40
[  460.558721][ T6092]  </TASK>
[  460.652269][ T6092] F2FS-fs (loop2): Stopped filesystem due to reason: 3
[  460.849742][T11398] F2FS-fs (loop1): Small segment_count (9 < 1 * 24)
[  460.861612][T11398] F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock
[  460.914274][T11398] F2FS-fs (loop1): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  460.920012][T11398] F2FS-fs (loop1): Try to recover 1th superblock, ret: 0
[  460.922994][T11398] F2FS-fs (loop1): Mounted with checkpoint version = 48b305e5
[  460.942733][ T6087] CPU: 1 UID: 0 PID: 6087 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  460.942751][ T6087] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  460.942758][ T6087] Call Trace:
[  460.942763][ T6087]  <TASK>
[  460.942768][ T6087]  dump_stack_lvl+0xe8/0x150
[  460.942788][ T6087]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  460.942804][ T6087]  f2fs_write_end_io+0x124b/0x1710
[  460.942828][ T6087]  __submit_merged_bio+0x258/0x6a0
[  460.942839][ T6087]  ? rcu_is_watching+0x15/0xb0
[  460.942857][ T6087]  __submit_merged_write_cond+0x3c9/0x4e0
[  460.942871][ T6087]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  460.942893][ T6087]  f2fs_write_data_pages+0x2a27/0x36f0
[  460.942904][ T6087]  ? __lock_acquire+0x683/0x2cf0
[  460.942932][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  460.942964][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  460.942972][ T6087]  ? __bfs+0x153/0x290
[  460.943005][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  460.943021][ T6087]  ? lockdep_unlock+0x5d/0xd0
[  460.943031][ T6087]  ? __lock_acquire+0x13e8/0x2cf0
[  460.943054][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  460.943067][ T6087]  do_writepages+0x338/0x560
[  460.943085][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  460.943097][ T6087]  filemap_fdatawrite+0x1e9/0x2f0
[  460.943112][ T6087]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  460.943143][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  460.943154][ T6087]  f2fs_sync_dirty_inodes+0x30e/0x830
[  460.943174][ T6087]  f2fs_write_checkpoint+0xa3d/0x2710
[  460.943202][ T6087]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  460.943238][ T6087]  kill_f2fs_super+0x2dd/0x700
[  460.943256][ T6087]  ? __pfx_kill_f2fs_super+0x10/0x10
[  460.943274][ T6087]  ? call_rcu+0x64b/0x8b0
[  460.943281][ T6087]  ? lockdep_hardirqs_on+0x7a/0x110
[  460.943299][ T6087]  deactivate_locked_super+0xbc/0x110
[  460.943314][ T6087]  cleanup_mnt+0x3d3/0x460
[  460.943326][ T6087]  task_work_run+0x1d9/0x270
[  460.943341][ T6087]  ? __pfx_task_work_run+0x10/0x10
[  460.943394][ T6087]  exit_to_user_mode_loop+0x1fa/0x730
[  460.943408][ T6087]  ? rcu_is_watching+0x15/0xb0
[  460.943421][ T6087]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  460.943431][ T6087]  do_syscall_64+0x353/0x580
[  460.943442][ T6087]  ? trace_irq_disable+0x3b/0x140
[  460.943457][ T6087]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  460.943466][ T6087] RIP: 0033:0x7fbe5c39f257
[  460.943481][ T6087] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  460.943489][ T6087] RSP: 002b:00007ffd72651a58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  460.943499][ T6087] RAX: 0000000000000000 RBX: 00007fbe5c43445c RCX: 00007fbe5c39f257
[  460.943505][ T6087] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd72651b10
[  460.943510][ T6087] RBP: 00007ffd72651b10 R08: 00007ffd72652b10 R09: 00000000ffffffff
[  460.943515][ T6087] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd72652ba0
[  460.943521][ T6087] R13: 00007fbe5c43445c R14: 0000000000070802 R15: 00007ffd72652be0
[  460.943535][ T6087]  </TASK>
[  460.946343][ T6087] F2FS-fs (loop1): Stopped filesystem due to reason: 3
[  461.062413][T11400] set_capacity_and_notify: 9 callbacks suppressed
[  461.062425][T11400] loop0: detected capacity change from 0 to 40427
[  461.080468][T11400] F2FS-fs (loop0): Small segment_count (9 < 1 * 24)
[  461.082952][T11402] loop2: detected capacity change from 0 to 40427
[  461.086323][T11400] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
[  461.089121][T11402] F2FS-fs (loop2): Small segment_count (9 < 1 * 24)
[  461.091918][T11402] F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock
[  461.159831][T11400] F2FS-fs (loop0): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  461.160298][T11402] F2FS-fs (loop2): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  461.170004][T11402] F2FS-fs (loop2): Try to recover 1th superblock, ret: 0
[  461.173028][T11402] F2FS-fs (loop2): Mounted with checkpoint version = 48b305e5
[  461.184318][T11400] F2FS-fs (loop0): Try to recover 1th superblock, ret: 0
[  461.192166][ T6092] CPU: 0 UID: 0 PID: 6092 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  461.192183][ T6092] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  461.192189][ T6092] Call Trace:
[  461.192193][ T6092]  <TASK>
[  461.192198][ T6092]  dump_stack_lvl+0xe8/0x150
[  461.192218][ T6092]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  461.192256][ T6092]  f2fs_write_end_io+0x124b/0x1710
[  461.192281][ T6092]  __submit_merged_bio+0x258/0x6a0
[  461.192292][ T6092]  ? rcu_is_watching+0x15/0xb0
[  461.192310][ T6092]  __submit_merged_write_cond+0x3c9/0x4e0
[  461.192324][ T6092]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  461.192371][ T6092]  f2fs_write_data_pages+0x2a27/0x36f0
[  461.192399][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  461.192429][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  461.192437][ T6092]  ? __bfs+0x153/0x290
[  461.192448][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  461.192463][ T6092]  ? lockdep_unlock+0x5d/0xd0
[  461.192472][ T6092]  ? __lock_acquire+0x13e8/0x2cf0
[  461.192494][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  461.192508][ T6092]  do_writepages+0x338/0x560
[  461.192539][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  461.192552][ T6092]  filemap_fdatawrite+0x1e9/0x2f0
[  461.192566][ T6092]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  461.192596][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  461.192607][ T6092]  f2fs_sync_dirty_inodes+0x30e/0x830
[  461.192626][ T6092]  f2fs_write_checkpoint+0xa3d/0x2710
[  461.192653][ T6092]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  461.192687][ T6092]  kill_f2fs_super+0x2dd/0x700
[  461.192703][ T6092]  ? __pfx_kill_f2fs_super+0x10/0x10
[  461.192720][ T6092]  ? call_rcu+0x64b/0x8b0
[  461.192728][ T6092]  ? lockdep_hardirqs_on+0x7a/0x110
[  461.192744][ T6092]  deactivate_locked_super+0xbc/0x110
[  461.192758][ T6092]  cleanup_mnt+0x3d3/0x460
[  461.192769][ T6092]  task_work_run+0x1d9/0x270
[  461.192785][ T6092]  ? __pfx_task_work_run+0x10/0x10
[  461.192803][ T6092]  exit_to_user_mode_loop+0x1fa/0x730
[  461.192815][ T6092]  ? rcu_is_watching+0x15/0xb0
[  461.192832][ T6092]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  461.192842][ T6092]  do_syscall_64+0x353/0x580
[  461.192852][ T6092]  ? trace_irq_disable+0x3b/0x140
[  461.192866][ T6092]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  461.192875][ T6092] RIP: 0033:0x7f835259f257
[  461.192885][ T6092] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  461.192893][ T6092] RSP: 002b:00007fffacbabcb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  461.192903][ T6092] RAX: 0000000000000000 RBX: 00007f835263445c RCX: 00007f835259f257
[  461.192909][ T6092] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffacbabd70
[  461.192914][ T6092] RBP: 00007fffacbabd70 R08: 00007fffacbacd70 R09: 00000000ffffffff
[  461.192920][ T6092] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffacbace00
[  461.192925][ T6092] R13: 00007f835263445c R14: 0000000000070900 R15: 00007fffacbace40
[  461.192939][ T6092]  </TASK>
[  461.193296][ T6092] F2FS-fs (loop2): Stopped filesystem due to reason: 3
[  461.193978][T11400] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5
[  461.292142][   T34] kauditd_printk_skb: 30 callbacks suppressed
[  461.292152][   T34] audit: type=1800 audit(1785658511.163:2541): pid=11400 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.1285" name="file1" dev="loop0" ino=10 res=0 errno=0
[  461.319688][   T34] audit: type=1800 audit(1785658511.173:2542): pid=11400 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.1285" name="file1" dev="loop0" ino=10 res=0 errno=0
[  461.344120][ T6086] CPU: 0 UID: 0 PID: 6086 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  461.344136][ T6086] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  461.344142][ T6086] Call Trace:
[  461.344147][ T6086]  <TASK>
[  461.344152][ T6086]  dump_stack_lvl+0xe8/0x150
[  461.344171][ T6086]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  461.344188][ T6086]  f2fs_write_end_io+0x124b/0x1710
[  461.344235][ T6086]  __submit_merged_bio+0x258/0x6a0
[  461.344246][ T6086]  ? rcu_is_watching+0x15/0xb0
[  461.344263][ T6086]  __submit_merged_write_cond+0x3c9/0x4e0
[  461.344278][ T6086]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  461.344300][ T6086]  f2fs_write_data_pages+0x2a27/0x36f0
[  461.344351][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  461.344385][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  461.344393][ T6086]  ? __bfs+0x153/0x290
[  461.344404][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  461.344420][ T6086]  ? lockdep_unlock+0x5d/0xd0
[  461.344429][ T6086]  ? __lock_acquire+0x13e8/0x2cf0
[  461.344452][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  461.344465][ T6086]  do_writepages+0x338/0x560
[  461.344483][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  461.344494][ T6086]  filemap_fdatawrite+0x1e9/0x2f0
[  461.344509][ T6086]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  461.344541][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  461.344552][ T6086]  f2fs_sync_dirty_inodes+0x30e/0x830
[  461.344571][ T6086]  f2fs_write_checkpoint+0xa3d/0x2710
[  461.344599][ T6086]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  461.344638][ T6086]  kill_f2fs_super+0x2dd/0x700
[  461.344655][ T6086]  ? __pfx_kill_f2fs_super+0x10/0x10
[  461.344673][ T6086]  ? call_rcu+0x64b/0x8b0
[  461.344681][ T6086]  ? lockdep_hardirqs_on+0x7a/0x110
[  461.344699][ T6086]  deactivate_locked_super+0xbc/0x110
[  461.344713][ T6086]  cleanup_mnt+0x3d3/0x460
[  461.344725][ T6086]  task_work_run+0x1d9/0x270
[  461.344741][ T6086]  ? __pfx_task_work_run+0x10/0x10
[  461.344758][ T6086]  exit_to_user_mode_loop+0x1fa/0x730
[  461.344770][ T6086]  ? rcu_is_watching+0x15/0xb0
[  461.344783][ T6086]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  461.344793][ T6086]  do_syscall_64+0x353/0x580
[  461.344803][ T6086]  ? trace_irq_disable+0x3b/0x140
[  461.344818][ T6086]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  461.344826][ T6086] RIP: 0033:0x7f91c5b9f257
[  461.344843][ T6086] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  461.344851][ T6086] RSP: 002b:00007ffcdf6e3ae8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  461.344861][ T6086] RAX: 0000000000000000 RBX: 00007f91c5c3445c RCX: 00007f91c5b9f257
[  461.344867][ T6086] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcdf6e3ba0
[  461.344872][ T6086] RBP: 00007ffcdf6e3ba0 R08: 00007ffcdf6e4ba0 R09: 00000000ffffffff
[  461.344878][ T6086] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcdf6e4c30
[  461.344883][ T6086] R13: 00007f91c5c3445c R14: 0000000000070994 R15: 00007ffcdf6e4c70
[  461.344899][ T6086]  </TASK>
[  461.399875][ T6086] F2FS-fs (loop0): Stopped filesystem due to reason: 3
[  461.547644][T11410] loop1: detected capacity change from 0 to 40427
[  461.572942][T11410] F2FS-fs (loop1): Small segment_count (9 < 1 * 24)
[  461.575079][T11410] F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock
[  461.607236][T11410] F2FS-fs (loop1): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  461.613588][T11410] F2FS-fs (loop1): Try to recover 1th superblock, ret: 0
[  461.615818][T11410] F2FS-fs (loop1): Mounted with checkpoint version = 48b305e5
[  461.620239][   T34] audit: type=1800 audit(1785658511.483:2543): pid=11410 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.1.1288" name="file1" dev="loop1" ino=10 res=0 errno=0
[  461.624744][T11410] bio_check_eod: 50 callbacks suppressed
[  461.624754][T11410] syz.1.1288: attempt to access beyond end of device
[  461.624754][T11410] loop1: rw=2049, sector=53248, nr_sectors = 976 limit=40427
[  461.633206][T11410] syz.1.1288: attempt to access beyond end of device
[  461.633206][T11410] loop1: rw=8423425, sector=54224, nr_sectors = 8 limit=40427
[  461.639195][   T34] audit: type=1800 audit(1785658511.483:2544): pid=11410 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.1.1288" name="file1" dev="loop1" ino=10 res=0 errno=0
[  461.650033][ T6087] syz-executor: attempt to access beyond end of device
[  461.650033][ T6087] loop1: rw=2049, sector=45096, nr_sectors = 8 limit=40427
[  461.658074][ T6087] CPU: 0 UID: 0 PID: 6087 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  461.658087][ T6087] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  461.658094][ T6087] Call Trace:
[  461.658099][ T6087]  <TASK>
[  461.658103][ T6087]  dump_stack_lvl+0xe8/0x150
[  461.658122][ T6087]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  461.658138][ T6087]  f2fs_write_end_io+0x124b/0x1710
[  461.658161][ T6087]  __submit_merged_bio+0x258/0x6a0
[  461.658171][ T6087]  ? rcu_is_watching+0x15/0xb0
[  461.658189][ T6087]  __submit_merged_write_cond+0x3c9/0x4e0
[  461.658203][ T6087]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  461.658223][ T6087]  f2fs_write_data_pages+0x2a27/0x36f0
[  461.658235][ T6087]  ? __lock_acquire+0x683/0x2cf0
[  461.658261][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  461.658291][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  461.658298][ T6087]  ? __bfs+0x153/0x290
[  461.658343][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  461.658360][ T6087]  ? lockdep_unlock+0x5d/0xd0
[  461.658369][ T6087]  ? __lock_acquire+0x13e8/0x2cf0
[  461.658406][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  461.658421][ T6087]  do_writepages+0x338/0x560
[  461.658438][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  461.658450][ T6087]  filemap_fdatawrite+0x1e9/0x2f0
[  461.658464][ T6087]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  461.658495][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  461.658506][ T6087]  f2fs_sync_dirty_inodes+0x30e/0x830
[  461.658525][ T6087]  f2fs_write_checkpoint+0xa3d/0x2710
[  461.658551][ T6087]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  461.658585][ T6087]  kill_f2fs_super+0x2dd/0x700
[  461.658602][ T6087]  ? __pfx_kill_f2fs_super+0x10/0x10
[  461.658619][ T6087]  ? call_rcu+0x64b/0x8b0
[  461.658626][ T6087]  ? lockdep_hardirqs_on+0x7a/0x110
[  461.658643][ T6087]  deactivate_locked_super+0xbc/0x110
[  461.658658][ T6087]  cleanup_mnt+0x3d3/0x460
[  461.658669][ T6087]  task_work_run+0x1d9/0x270
[  461.658685][ T6087]  ? __pfx_task_work_run+0x10/0x10
[  461.658701][ T6087]  exit_to_user_mode_loop+0x1fa/0x730
[  461.658713][ T6087]  ? rcu_is_watching+0x15/0xb0
[  461.658726][ T6087]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  461.658735][ T6087]  do_syscall_64+0x353/0x580
[  461.658745][ T6087]  ? trace_irq_disable+0x3b/0x140
[  461.658760][ T6087]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  461.658768][ T6087] RIP: 0033:0x7fbe5c39f257
[  461.658778][ T6087] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  461.658786][ T6087] RSP: 002b:00007ffd72651a58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  461.658796][ T6087] RAX: 0000000000000000 RBX: 00007fbe5c43445c RCX: 00007fbe5c39f257
[  461.658801][ T6087] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd72651b10
[  461.658812][ T6087] RBP: 00007ffd72651b10 R08: 00007ffd72652b10 R09: 00000000ffffffff
[  461.658818][ T6087] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd72652ba0
[  461.658823][ T6087] R13: 00007fbe5c43445c R14: 0000000000070ac2 R15: 00007ffd72652be0
[  461.658837][ T6087]  </TASK>
[  461.701978][ T6087] F2FS-fs (loop1): Stopped filesystem due to reason: 3
[  461.782292][T11412] loop2: detected capacity change from 0 to 40427
[  461.785394][T11412] F2FS-fs (loop2): Small segment_count (9 < 1 * 24)
[  461.787474][T11412] F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock
[  461.854158][T11412] F2FS-fs (loop2): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  461.874639][T11412] F2FS-fs (loop2): Try to recover 1th superblock, ret: 0
[  461.876900][T11412] F2FS-fs (loop2): Mounted with checkpoint version = 48b305e5
[  461.883489][T11416] loop0: detected capacity change from 0 to 40427
[  461.886452][   T34] audit: type=1800 audit(1785658511.753:2545): pid=11412 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.2.1289" name="file1" dev="loop2" ino=10 res=0 errno=0
[  461.891834][T11416] F2FS-fs (loop0): Small segment_count (9 < 1 * 24)
[  461.893540][   T34] audit: type=1800 audit(1785658511.763:2546): pid=11412 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.2.1289" name="file1" dev="loop2" ino=10 res=0 errno=0
[  461.902447][T11416] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
[  461.913558][T11412] syz.2.1289: attempt to access beyond end of device
[  461.913558][T11412] loop2: rw=2049, sector=53248, nr_sectors = 976 limit=40427
[  461.930960][T11412] syz.2.1289: attempt to access beyond end of device
[  461.930960][T11412] loop2: rw=8423425, sector=54224, nr_sectors = 8 limit=40427
[  461.961807][ T6092] syz-executor: attempt to access beyond end of device
[  461.961807][ T6092] loop2: rw=2049, sector=45096, nr_sectors = 8 limit=40427
[  461.967806][T11416] F2FS-fs (loop0): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  461.972743][T11416] F2FS-fs (loop0): Try to recover 1th superblock, ret: 0
[  461.974969][T11416] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5
[  461.976484][ T6092] CPU: 0 UID: 0 PID: 6092 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  461.976497][ T6092] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  461.976504][ T6092] Call Trace:
[  461.976509][ T6092]  <TASK>
[  461.976513][ T6092]  dump_stack_lvl+0xe8/0x150
[  461.976532][ T6092]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  461.976548][ T6092]  f2fs_write_end_io+0x124b/0x1710
[  461.976572][ T6092]  __submit_merged_bio+0x258/0x6a0
[  461.976583][ T6092]  ? rcu_is_watching+0x15/0xb0
[  461.976600][ T6092]  __submit_merged_write_cond+0x3c9/0x4e0
[  461.976615][ T6092]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  461.976637][ T6092]  f2fs_write_data_pages+0x2a27/0x36f0
[  461.976649][ T6092]  ? __lock_acquire+0x683/0x2cf0
[  461.976697][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  461.976732][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  461.976740][ T6092]  ? __bfs+0x153/0x290
[  461.976751][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  461.976766][ T6092]  ? lockdep_unlock+0x5d/0xd0
[  461.976775][ T6092]  ? __lock_acquire+0x13e8/0x2cf0
[  461.976804][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  461.976816][ T6092]  do_writepages+0x338/0x560
[  461.976834][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  461.976847][ T6092]  filemap_fdatawrite+0x1e9/0x2f0
[  461.976862][ T6092]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  461.976894][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  461.976906][ T6092]  f2fs_sync_dirty_inodes+0x30e/0x830
[  461.976927][ T6092]  f2fs_write_checkpoint+0xa3d/0x2710
[  461.976955][ T6092]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  461.976992][ T6092]  kill_f2fs_super+0x2dd/0x700
[  461.977009][ T6092]  ? __pfx_kill_f2fs_super+0x10/0x10
[  461.977028][ T6092]  ? call_rcu+0x64b/0x8b0
[  461.977035][ T6092]  ? lockdep_hardirqs_on+0x7a/0x110
[  461.977053][ T6092]  deactivate_locked_super+0xbc/0x110
[  461.977068][ T6092]  cleanup_mnt+0x3d3/0x460
[  461.977080][ T6092]  task_work_run+0x1d9/0x270
[  461.977096][ T6092]  ? __pfx_task_work_run+0x10/0x10
[  461.977113][ T6092]  exit_to_user_mode_loop+0x1fa/0x730
[  461.977125][ T6092]  ? rcu_is_watching+0x15/0xb0
[  461.977138][ T6092]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  461.977147][ T6092]  do_syscall_64+0x353/0x580
[  461.977157][ T6092]  ? trace_irq_disable+0x3b/0x140
[  461.977172][ T6092]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  461.977180][ T6092] RIP: 0033:0x7f835259f257
[  461.977191][ T6092] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  461.977198][ T6092] RSP: 002b:00007fffacbabcb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  461.977209][ T6092] RAX: 0000000000000000 RBX: 00007f835263445c RCX: 00007f835259f257
[  461.977215][ T6092] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffacbabd70
[  461.977220][ T6092] RBP: 00007fffacbabd70 R08: 00007fffacbacd70 R09: 00000000ffffffff
[  461.977226][ T6092] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffacbace00
[  461.977231][ T6092] R13: 00007f835263445c R14: 0000000000070beb R15: 00007fffacbace40
[  461.977246][ T6092]  </TASK>
[  461.980551][ T6092] F2FS-fs (loop2): Stopped filesystem due to reason: 3
[  461.989983][T11416] syz.0.1290: attempt to access beyond end of device
[  461.989983][T11416] loop0: rw=2049, sector=53248, nr_sectors = 976 limit=40427
[  461.991266][   T34] audit: type=1800 audit(1785658511.853:2547): pid=11416 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.1290" name="file1" dev="loop0" ino=10 res=0 errno=0
[  461.993094][T11416] syz.0.1290: attempt to access beyond end of device
[  461.993094][T11416] loop0: rw=8423425, sector=54224, nr_sectors = 8 limit=40427
[  461.994168][   T34] audit: type=1800 audit(1785658511.853:2548): pid=11416 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.1290" name="file1" dev="loop0" ino=10 res=0 errno=0
[  462.094816][ T6086] syz-executor: attempt to access beyond end of device
[  462.094816][ T6086] loop0: rw=2049, sector=45096, nr_sectors = 8 limit=40427
[  462.115447][ T6086] CPU: 1 UID: 0 PID: 6086 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  462.115462][ T6086] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  462.115469][ T6086] Call Trace:
[  462.115473][ T6086]  <TASK>
[  462.115478][ T6086]  dump_stack_lvl+0xe8/0x150
[  462.115498][ T6086]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  462.115513][ T6086]  f2fs_write_end_io+0x124b/0x1710
[  462.115535][ T6086]  __submit_merged_bio+0x258/0x6a0
[  462.115546][ T6086]  ? rcu_is_watching+0x15/0xb0
[  462.115563][ T6086]  __submit_merged_write_cond+0x3c9/0x4e0
[  462.115577][ T6086]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  462.115597][ T6086]  f2fs_write_data_pages+0x2a27/0x36f0
[  462.115624][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  462.115654][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  462.115662][ T6086]  ? __bfs+0x153/0x290
[  462.115673][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  462.115687][ T6086]  ? lockdep_unlock+0x5d/0xd0
[  462.115697][ T6086]  ? __lock_acquire+0x13e8/0x2cf0
[  462.115718][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  462.115731][ T6086]  do_writepages+0x338/0x560
[  462.115748][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  462.115760][ T6086]  filemap_fdatawrite+0x1e9/0x2f0
[  462.115774][ T6086]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  462.115811][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  462.115822][ T6086]  f2fs_sync_dirty_inodes+0x30e/0x830
[  462.115841][ T6086]  f2fs_write_checkpoint+0xa3d/0x2710
[  462.115866][ T6086]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  462.115900][ T6086]  kill_f2fs_super+0x2dd/0x700
[  462.115917][ T6086]  ? __pfx_kill_f2fs_super+0x10/0x10
[  462.115933][ T6086]  ? call_rcu+0x64b/0x8b0
[  462.115941][ T6086]  ? lockdep_hardirqs_on+0x7a/0x110
[  462.115958][ T6086]  deactivate_locked_super+0xbc/0x110
[  462.115973][ T6086]  cleanup_mnt+0x3d3/0x460
[  462.115984][ T6086]  task_work_run+0x1d9/0x270
[  462.116000][ T6086]  ? __pfx_task_work_run+0x10/0x10
[  462.116016][ T6086]  exit_to_user_mode_loop+0x1fa/0x730
[  462.116028][ T6086]  ? rcu_is_watching+0x15/0xb0
[  462.116040][ T6086]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  462.116051][ T6086]  do_syscall_64+0x353/0x580
[  462.116060][ T6086]  ? trace_irq_disable+0x3b/0x140
[  462.116075][ T6086]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  462.116083][ T6086] RIP: 0033:0x7f91c5b9f257
[  462.116093][ T6086] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  462.116100][ T6086] RSP: 002b:00007ffcdf6e3ae8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  462.116111][ T6086] RAX: 0000000000000000 RBX: 00007f91c5c3445c RCX: 00007f91c5b9f257
[  462.116117][ T6086] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcdf6e3ba0
[  462.116122][ T6086] RBP: 00007ffcdf6e3ba0 R08: 00007ffcdf6e4ba0 R09: 00000000ffffffff
[  462.116128][ T6086] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcdf6e4c30
[  462.116133][ T6086] R13: 00007f91c5c3445c R14: 0000000000070c29 R15: 00007ffcdf6e4c70
[  462.116146][ T6086]  </TASK>
[  462.116151][ T6086] F2FS-fs (loop0): Stopped filesystem due to reason: 3
[  462.348691][T11422] loop1: detected capacity change from 0 to 40427
[  462.361675][T11422] F2FS-fs (loop1): Small segment_count (9 < 1 * 24)
[  462.372587][T11422] F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock
[  462.416279][T11422] F2FS-fs (loop1): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  462.424940][T11422] F2FS-fs (loop1): Try to recover 1th superblock, ret: 0
[  462.427211][T11422] F2FS-fs (loop1): Mounted with checkpoint version = 48b305e5
[  462.431205][   T34] audit: type=1800 audit(1785658512.303:2549): pid=11422 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.1.1291" name="file1" dev="loop1" ino=10 res=0 errno=0
[  462.442660][T11422] syz.1.1291: attempt to access beyond end of device
[  462.442660][T11422] loop1: rw=2049, sector=53248, nr_sectors = 976 limit=40427
[  462.447165][   T34] audit: type=1800 audit(1785658512.303:2550): pid=11422 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.1.1291" name="file1" dev="loop1" ino=10 res=0 errno=0
[  462.462798][ T6087] CPU: 0 UID: 0 PID: 6087 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  462.462813][ T6087] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  462.462819][ T6087] Call Trace:
[  462.462825][ T6087]  <TASK>
[  462.462829][ T6087]  dump_stack_lvl+0xe8/0x150
[  462.462849][ T6087]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  462.462865][ T6087]  f2fs_write_end_io+0x124b/0x1710
[  462.462888][ T6087]  __submit_merged_bio+0x258/0x6a0
[  462.462898][ T6087]  ? rcu_is_watching+0x15/0xb0
[  462.462916][ T6087]  __submit_merged_write_cond+0x3c9/0x4e0
[  462.462930][ T6087]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  462.462949][ T6087]  f2fs_write_data_pages+0x2a27/0x36f0
[  462.462961][ T6087]  ? __lock_acquire+0x683/0x2cf0
[  462.462986][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  462.463016][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  462.463024][ T6087]  ? __bfs+0x153/0x290
[  462.463034][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  462.463048][ T6087]  ? lockdep_unlock+0x5d/0xd0
[  462.463057][ T6087]  ? __lock_acquire+0x13e8/0x2cf0
[  462.463079][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  462.463091][ T6087]  do_writepages+0x338/0x560
[  462.463108][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  462.463120][ T6087]  filemap_fdatawrite+0x1e9/0x2f0
[  462.463134][ T6087]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  462.463164][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  462.463175][ T6087]  f2fs_sync_dirty_inodes+0x30e/0x830
[  462.463194][ T6087]  f2fs_write_checkpoint+0xa3d/0x2710
[  462.463220][ T6087]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  462.463277][ T6087]  kill_f2fs_super+0x2dd/0x700
[  462.463296][ T6087]  ? __pfx_kill_f2fs_super+0x10/0x10
[  462.463313][ T6087]  ? call_rcu+0x64b/0x8b0
[  462.463320][ T6087]  ? lockdep_hardirqs_on+0x7a/0x110
[  462.463338][ T6087]  deactivate_locked_super+0xbc/0x110
[  462.463353][ T6087]  cleanup_mnt+0x3d3/0x460
[  462.463365][ T6087]  task_work_run+0x1d9/0x270
[  462.463380][ T6087]  ? __pfx_task_work_run+0x10/0x10
[  462.463413][ T6087]  exit_to_user_mode_loop+0x1fa/0x730
[  462.463425][ T6087]  ? rcu_is_watching+0x15/0xb0
[  462.463438][ T6087]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  462.463448][ T6087]  do_syscall_64+0x353/0x580
[  462.463458][ T6087]  ? trace_irq_disable+0x3b/0x140
[  462.463473][ T6087]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  462.463481][ T6087] RIP: 0033:0x7fbe5c39f257
[  462.463491][ T6087] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  462.463499][ T6087] RSP: 002b:00007ffd72651a58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  462.463509][ T6087] RAX: 0000000000000000 RBX: 00007fbe5c43445c RCX: 00007fbe5c39f257
[  462.463515][ T6087] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd72651b10
[  462.463520][ T6087] RBP: 00007ffd72651b10 R08: 00007ffd72652b10 R09: 00000000ffffffff
[  462.463526][ T6087] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd72652ba0
[  462.463532][ T6087] R13: 00007fbe5c43445c R14: 0000000000070df3 R15: 00007ffd72652be0
[  462.463545][ T6087]  </TASK>
[  462.465063][ T6087] F2FS-fs (loop1): Stopped filesystem due to reason: 3
[  462.544580][T11424] loop2: detected capacity change from 0 to 40427
[  462.581802][T11424] F2FS-fs (loop2): Small segment_count (9 < 1 * 24)
[  462.588765][T11424] F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock
[  462.653393][T11424] F2FS-fs (loop2): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  462.663458][T11424] F2FS-fs (loop2): Try to recover 1th superblock, ret: 0
[  462.669392][T11424] F2FS-fs (loop2): Mounted with checkpoint version = 48b305e5
[  462.672918][T11426] loop0: detected capacity change from 0 to 40427
[  462.680308][T11426] F2FS-fs (loop0): Small segment_count (9 < 1 * 24)
[  462.685420][T11426] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
[  462.714621][ T6092] CPU: 0 UID: 0 PID: 6092 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  462.714635][ T6092] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  462.714641][ T6092] Call Trace:
[  462.714646][ T6092]  <TASK>
[  462.714651][ T6092]  dump_stack_lvl+0xe8/0x150
[  462.714669][ T6092]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  462.714686][ T6092]  f2fs_write_end_io+0x124b/0x1710
[  462.714708][ T6092]  __submit_merged_bio+0x258/0x6a0
[  462.714718][ T6092]  ? rcu_is_watching+0x15/0xb0
[  462.714743][ T6092]  __submit_merged_write_cond+0x3c9/0x4e0
[  462.714757][ T6092]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  462.714777][ T6092]  f2fs_write_data_pages+0x2a27/0x36f0
[  462.714789][ T6092]  ? __lock_acquire+0x683/0x2cf0
[  462.714815][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  462.714844][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  462.714852][ T6092]  ? __bfs+0x153/0x290
[  462.714862][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  462.714877][ T6092]  ? lockdep_unlock+0x5d/0xd0
[  462.714886][ T6092]  ? __lock_acquire+0x13e8/0x2cf0
[  462.714907][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  462.714920][ T6092]  do_writepages+0x338/0x560
[  462.714937][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  462.714948][ T6092]  filemap_fdatawrite+0x1e9/0x2f0
[  462.714962][ T6092]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  462.714991][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  462.715002][ T6092]  f2fs_sync_dirty_inodes+0x30e/0x830
[  462.715021][ T6092]  f2fs_write_checkpoint+0xa3d/0x2710
[  462.715047][ T6092]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  462.715081][ T6092]  kill_f2fs_super+0x2dd/0x700
[  462.715098][ T6092]  ? __pfx_kill_f2fs_super+0x10/0x10
[  462.715114][ T6092]  ? call_rcu+0x64b/0x8b0
[  462.715122][ T6092]  ? lockdep_hardirqs_on+0x7a/0x110
[  462.715139][ T6092]  deactivate_locked_super+0xbc/0x110
[  462.715154][ T6092]  cleanup_mnt+0x3d3/0x460
[  462.715165][ T6092]  task_work_run+0x1d9/0x270
[  462.715181][ T6092]  ? __pfx_task_work_run+0x10/0x10
[  462.715197][ T6092]  exit_to_user_mode_loop+0x1fa/0x730
[  462.715209][ T6092]  ? rcu_is_watching+0x15/0xb0
[  462.715222][ T6092]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  462.715231][ T6092]  do_syscall_64+0x353/0x580
[  462.715266][ T6092]  ? trace_irq_disable+0x3b/0x140
[  462.715280][ T6092]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  462.715289][ T6092] RIP: 0033:0x7f835259f257
[  462.715298][ T6092] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  462.715307][ T6092] RSP: 002b:00007fffacbabcb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  462.715317][ T6092] RAX: 0000000000000000 RBX: 00007f835263445c RCX: 00007f835259f257
[  462.715323][ T6092] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffacbabd70
[  462.715329][ T6092] RBP: 00007fffacbabd70 R08: 00007fffacbacd70 R09: 00000000ffffffff
[  462.715334][ T6092] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffacbace00
[  462.715340][ T6092] R13: 00007f835263445c R14: 0000000000070ee6 R15: 00007fffacbace40
[  462.715353][ T6092]  </TASK>
[  462.715357][ T6092] F2FS-fs (loop2): Stopped filesystem due to reason: 3
[  462.749213][T11426] F2FS-fs (loop0): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  462.822539][T11426] F2FS-fs (loop0): Try to recover 1th superblock, ret: 0
[  462.825106][T11426] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5
[  462.840678][ T6086] CPU: 0 UID: 0 PID: 6086 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  462.840692][ T6086] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  462.840699][ T6086] Call Trace:
[  462.840703][ T6086]  <TASK>
[  462.840708][ T6086]  dump_stack_lvl+0xe8/0x150
[  462.840727][ T6086]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  462.840743][ T6086]  f2fs_write_end_io+0x124b/0x1710
[  462.840766][ T6086]  __submit_merged_bio+0x258/0x6a0
[  462.840777][ T6086]  ? rcu_is_watching+0x15/0xb0
[  462.840794][ T6086]  __submit_merged_write_cond+0x3c9/0x4e0
[  462.840808][ T6086]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  462.840828][ T6086]  f2fs_write_data_pages+0x2a27/0x36f0
[  462.840855][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  462.840884][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  462.840892][ T6086]  ? __bfs+0x153/0x290
[  462.840903][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  462.840918][ T6086]  ? lockdep_unlock+0x5d/0xd0
[  462.840927][ T6086]  ? __lock_acquire+0x13e8/0x2cf0
[  462.840948][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  462.840961][ T6086]  do_writepages+0x338/0x560
[  462.840978][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  462.840989][ T6086]  filemap_fdatawrite+0x1e9/0x2f0
[  462.841004][ T6086]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  462.841034][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  462.841044][ T6086]  f2fs_sync_dirty_inodes+0x30e/0x830
[  462.841064][ T6086]  f2fs_write_checkpoint+0xa3d/0x2710
[  462.841089][ T6086]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  462.841123][ T6086]  kill_f2fs_super+0x2dd/0x700
[  462.841140][ T6086]  ? __pfx_kill_f2fs_super+0x10/0x10
[  462.841157][ T6086]  ? call_rcu+0x64b/0x8b0
[  462.841164][ T6086]  ? lockdep_hardirqs_on+0x7a/0x110
[  462.841182][ T6086]  deactivate_locked_super+0xbc/0x110
[  462.841196][ T6086]  cleanup_mnt+0x3d3/0x460
[  462.841208][ T6086]  task_work_run+0x1d9/0x270
[  462.841251][ T6086]  ? __pfx_task_work_run+0x10/0x10
[  462.841270][ T6086]  exit_to_user_mode_loop+0x1fa/0x730
[  462.841282][ T6086]  ? rcu_is_watching+0x15/0xb0
[  462.841295][ T6086]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  462.841305][ T6086]  do_syscall_64+0x353/0x580
[  462.841315][ T6086]  ? trace_irq_disable+0x3b/0x140
[  462.841329][ T6086]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  462.841338][ T6086] RIP: 0033:0x7f91c5b9f257
[  462.841347][ T6086] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  462.841356][ T6086] RSP: 002b:00007ffcdf6e3ae8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  462.841366][ T6086] RAX: 0000000000000000 RBX: 00007f91c5c3445c RCX: 00007f91c5b9f257
[  462.841372][ T6086] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcdf6e3ba0
[  462.841377][ T6086] RBP: 00007ffcdf6e3ba0 R08: 00007ffcdf6e4ba0 R09: 00000000ffffffff
[  462.841383][ T6086] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcdf6e4c30
[  462.841388][ T6086] R13: 00007f91c5c3445c R14: 0000000000070f6d R15: 00007ffcdf6e4c70
[  462.841402][ T6086]  </TASK>
[  462.841406][ T6086] F2FS-fs (loop0): Stopped filesystem due to reason: 3
[  463.078056][T11434] loop1: detected capacity change from 0 to 40427
[  463.086143][T11434] F2FS-fs (loop1): Small segment_count (9 < 1 * 24)
[  463.102244][T11434] F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock
[  463.173789][T11434] F2FS-fs (loop1): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  463.178801][T11434] F2FS-fs (loop1): Try to recover 1th superblock, ret: 0
[  463.181624][T11434] F2FS-fs (loop1): Mounted with checkpoint version = 48b305e5
[  463.204491][ T6087] CPU: 1 UID: 0 PID: 6087 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  463.204514][ T6087] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  463.204520][ T6087] Call Trace:
[  463.204525][ T6087]  <TASK>
[  463.204530][ T6087]  dump_stack_lvl+0xe8/0x150
[  463.204550][ T6087]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  463.204589][ T6087]  f2fs_write_end_io+0x124b/0x1710
[  463.204613][ T6087]  __submit_merged_bio+0x258/0x6a0
[  463.204624][ T6087]  ? rcu_is_watching+0x15/0xb0
[  463.204643][ T6087]  __submit_merged_write_cond+0x3c9/0x4e0
[  463.204665][ T6087]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  463.204686][ T6087]  f2fs_write_data_pages+0x2a27/0x36f0
[  463.204698][ T6087]  ? __lock_acquire+0x683/0x2cf0
[  463.204726][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  463.204758][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  463.204766][ T6087]  ? __bfs+0x153/0x290
[  463.204776][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  463.204791][ T6087]  ? lockdep_unlock+0x5d/0xd0
[  463.204800][ T6087]  ? __lock_acquire+0x13e8/0x2cf0
[  463.204823][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  463.204836][ T6087]  do_writepages+0x338/0x560
[  463.204854][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  463.204866][ T6087]  filemap_fdatawrite+0x1e9/0x2f0
[  463.204881][ T6087]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  463.204913][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  463.204924][ T6087]  f2fs_sync_dirty_inodes+0x30e/0x830
[  463.204944][ T6087]  f2fs_write_checkpoint+0xa3d/0x2710
[  463.204972][ T6087]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  463.205010][ T6087]  kill_f2fs_super+0x2dd/0x700
[  463.205027][ T6087]  ? __pfx_kill_f2fs_super+0x10/0x10
[  463.205046][ T6087]  ? call_rcu+0x64b/0x8b0
[  463.205053][ T6087]  ? lockdep_hardirqs_on+0x7a/0x110
[  463.205072][ T6087]  deactivate_locked_super+0xbc/0x110
[  463.205088][ T6087]  cleanup_mnt+0x3d3/0x460
[  463.205100][ T6087]  task_work_run+0x1d9/0x270
[  463.205117][ T6087]  ? __pfx_task_work_run+0x10/0x10
[  463.205134][ T6087]  exit_to_user_mode_loop+0x1fa/0x730
[  463.205147][ T6087]  ? rcu_is_watching+0x15/0xb0
[  463.205160][ T6087]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  463.205170][ T6087]  do_syscall_64+0x353/0x580
[  463.205181][ T6087]  ? trace_irq_disable+0x3b/0x140
[  463.205196][ T6087]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  463.205233][ T6087] RIP: 0033:0x7fbe5c39f257
[  463.205246][ T6087] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  463.205254][ T6087] RSP: 002b:00007ffd72651a58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  463.205265][ T6087] RAX: 0000000000000000 RBX: 00007fbe5c43445c RCX: 00007fbe5c39f257
[  463.205270][ T6087] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd72651b10
[  463.205276][ T6087] RBP: 00007ffd72651b10 R08: 00007ffd72652b10 R09: 00000000ffffffff
[  463.205282][ T6087] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd72652ba0
[  463.205287][ T6087] R13: 00007fbe5c43445c R14: 00000000000710db R15: 00007ffd72652be0
[  463.205302][ T6087]  </TASK>
[  463.206363][ T6087] F2FS-fs (loop1): Stopped filesystem due to reason: 3
[  463.228706][T11436] loop0: detected capacity change from 0 to 40427
[  463.336827][T11436] F2FS-fs (loop0): Small segment_count (9 < 1 * 24)
[  463.339075][T11436] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
[  463.403993][T11436] F2FS-fs (loop0): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  463.422595][T11436] F2FS-fs (loop0): Try to recover 1th superblock, ret: 0
[  463.424861][T11436] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5
[  463.448439][ T6086] CPU: 1 UID: 0 PID: 6086 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  463.448455][ T6086] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  463.448462][ T6086] Call Trace:
[  463.448487][ T6086]  <TASK>
[  463.448492][ T6086]  dump_stack_lvl+0xe8/0x150
[  463.448510][ T6086]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  463.448524][ T6086]  f2fs_write_end_io+0x124b/0x1710
[  463.448546][ T6086]  __submit_merged_bio+0x258/0x6a0
[  463.448556][ T6086]  ? rcu_is_watching+0x15/0xb0
[  463.448572][ T6086]  __submit_merged_write_cond+0x3c9/0x4e0
[  463.448586][ T6086]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  463.448606][ T6086]  f2fs_write_data_pages+0x2a27/0x36f0
[  463.448618][ T6086]  ? __lock_acquire+0x683/0x2cf0
[  463.448643][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  463.448673][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  463.448680][ T6086]  ? __bfs+0x153/0x290
[  463.448690][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  463.448704][ T6086]  ? lockdep_unlock+0x5d/0xd0
[  463.448713][ T6086]  ? __lock_acquire+0x13e8/0x2cf0
[  463.448735][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  463.448747][ T6086]  do_writepages+0x338/0x560
[  463.448763][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  463.448774][ T6086]  filemap_fdatawrite+0x1e9/0x2f0
[  463.448788][ T6086]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  463.448818][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  463.448828][ T6086]  f2fs_sync_dirty_inodes+0x30e/0x830
[  463.448847][ T6086]  f2fs_write_checkpoint+0xa3d/0x2710
[  463.448873][ T6086]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  463.448914][ T6086]  kill_f2fs_super+0x2dd/0x700
[  463.448930][ T6086]  ? __pfx_kill_f2fs_super+0x10/0x10
[  463.448947][ T6086]  ? call_rcu+0x64b/0x8b0
[  463.448955][ T6086]  ? lockdep_hardirqs_on+0x7a/0x110
[  463.448971][ T6086]  deactivate_locked_super+0xbc/0x110
[  463.448984][ T6086]  cleanup_mnt+0x3d3/0x460
[  463.448995][ T6086]  task_work_run+0x1d9/0x270
[  463.449010][ T6086]  ? __pfx_task_work_run+0x10/0x10
[  463.449026][ T6086]  exit_to_user_mode_loop+0x1fa/0x730
[  463.449037][ T6086]  ? rcu_is_watching+0x15/0xb0
[  463.449050][ T6086]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  463.449059][ T6086]  do_syscall_64+0x353/0x580
[  463.449068][ T6086]  ? trace_irq_disable+0x3b/0x140
[  463.449082][ T6086]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  463.449090][ T6086] RIP: 0033:0x7f91c5b9f257
[  463.449100][ T6086] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  463.449107][ T6086] RSP: 002b:00007ffcdf6e3ae8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  463.449117][ T6086] RAX: 0000000000000000 RBX: 00007f91c5c3445c RCX: 00007f91c5b9f257
[  463.449123][ T6086] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcdf6e3ba0
[  463.449128][ T6086] RBP: 00007ffcdf6e3ba0 R08: 00007ffcdf6e4ba0 R09: 00000000ffffffff
[  463.449134][ T6086] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcdf6e4c30
[  463.449140][ T6086] R13: 00007f91c5c3445c R14: 00000000000711c8 R15: 00007ffcdf6e4c70
[  463.449153][ T6086]  </TASK>
[  463.542532][ T6086] F2FS-fs (loop0): Stopped filesystem due to reason: 3
[  463.585126][T11438] F2FS-fs (loop2): Small segment_count (9 < 1 * 24)
[  463.593861][T11438] F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock
[  463.647242][T11438] F2FS-fs (loop2): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  463.663848][T11438] F2FS-fs (loop2): Try to recover 1th superblock, ret: 0
[  463.666115][T11438] F2FS-fs (loop2): Mounted with checkpoint version = 48b305e5
[  463.686890][ T6092] CPU: 1 UID: 0 PID: 6092 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  463.686908][ T6092] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  463.686916][ T6092] Call Trace:
[  463.686920][ T6092]  <TASK>
[  463.686924][ T6092]  dump_stack_lvl+0xe8/0x150
[  463.686942][ T6092]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  463.686955][ T6092]  f2fs_write_end_io+0x124b/0x1710
[  463.686977][ T6092]  __submit_merged_bio+0x258/0x6a0
[  463.686987][ T6092]  ? rcu_is_watching+0x15/0xb0
[  463.687002][ T6092]  __submit_merged_write_cond+0x3c9/0x4e0
[  463.687017][ T6092]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  463.687037][ T6092]  f2fs_write_data_pages+0x2a27/0x36f0
[  463.687048][ T6092]  ? __lock_acquire+0x683/0x2cf0
[  463.687073][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  463.687103][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  463.687110][ T6092]  ? __bfs+0x153/0x290
[  463.687121][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  463.687135][ T6092]  ? lockdep_unlock+0x5d/0xd0
[  463.687144][ T6092]  ? __lock_acquire+0x13e8/0x2cf0
[  463.687166][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  463.687220][ T6092]  do_writepages+0x338/0x560
[  463.687243][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  463.687254][ T6092]  filemap_fdatawrite+0x1e9/0x2f0
[  463.687268][ T6092]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  463.687298][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  463.687309][ T6092]  f2fs_sync_dirty_inodes+0x30e/0x830
[  463.687328][ T6092]  f2fs_write_checkpoint+0xa3d/0x2710
[  463.687370][ T6092]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  463.687410][ T6092]  kill_f2fs_super+0x2dd/0x700
[  463.687427][ T6092]  ? __pfx_kill_f2fs_super+0x10/0x10
[  463.687444][ T6092]  ? call_rcu+0x64b/0x8b0
[  463.687452][ T6092]  ? lockdep_hardirqs_on+0x7a/0x110
[  463.687468][ T6092]  deactivate_locked_super+0xbc/0x110
[  463.687482][ T6092]  cleanup_mnt+0x3d3/0x460
[  463.687493][ T6092]  task_work_run+0x1d9/0x270
[  463.687508][ T6092]  ? __pfx_task_work_run+0x10/0x10
[  463.687525][ T6092]  exit_to_user_mode_loop+0x1fa/0x730
[  463.687536][ T6092]  ? rcu_is_watching+0x15/0xb0
[  463.687549][ T6092]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  463.687558][ T6092]  do_syscall_64+0x353/0x580
[  463.687568][ T6092]  ? trace_irq_disable+0x3b/0x140
[  463.687581][ T6092]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  463.687590][ T6092] RIP: 0033:0x7f835259f257
[  463.687599][ T6092] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  463.687607][ T6092] RSP: 002b:00007fffacbabcb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  463.687616][ T6092] RAX: 0000000000000000 RBX: 00007f835263445c RCX: 00007f835259f257
[  463.687622][ T6092] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffacbabd70
[  463.687628][ T6092] RBP: 00007fffacbabd70 R08: 00007fffacbacd70 R09: 00000000ffffffff
[  463.687634][ T6092] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffacbace00
[  463.687639][ T6092] R13: 00007f835263445c R14: 00000000000712ba R15: 00007fffacbace40
[  463.687652][ T6092]  </TASK>
[  463.688996][ T6092] F2FS-fs (loop2): Stopped filesystem due to reason: 3
[  463.828582][T11444] F2FS-fs (loop1): Small segment_count (9 < 1 * 24)
[  463.833198][T11444] F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock
[  463.901247][T11444] F2FS-fs (loop1): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  463.912334][T11444] F2FS-fs (loop1): Try to recover 1th superblock, ret: 0
[  463.917889][T11444] F2FS-fs (loop1): Mounted with checkpoint version = 48b305e5
[  463.950027][ T6087] CPU: 0 UID: 0 PID: 6087 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  463.950044][ T6087] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  463.950050][ T6087] Call Trace:
[  463.950055][ T6087]  <TASK>
[  463.950060][ T6087]  dump_stack_lvl+0xe8/0x150
[  463.950080][ T6087]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  463.950096][ T6087]  f2fs_write_end_io+0x124b/0x1710
[  463.950120][ T6087]  __submit_merged_bio+0x258/0x6a0
[  463.950131][ T6087]  ? rcu_is_watching+0x15/0xb0
[  463.950183][ T6087]  __submit_merged_write_cond+0x3c9/0x4e0
[  463.950199][ T6087]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  463.950221][ T6087]  f2fs_write_data_pages+0x2a27/0x36f0
[  463.950233][ T6087]  ? __lock_acquire+0x683/0x2cf0
[  463.950275][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  463.950309][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  463.950316][ T6087]  ? __bfs+0x153/0x290
[  463.950327][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  463.950342][ T6087]  ? lockdep_unlock+0x5d/0xd0
[  463.950352][ T6087]  ? __lock_acquire+0x13e8/0x2cf0
[  463.950375][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  463.950387][ T6087]  do_writepages+0x338/0x560
[  463.950420][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  463.950434][ T6087]  filemap_fdatawrite+0x1e9/0x2f0
[  463.950448][ T6087]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  463.950480][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  463.950491][ T6087]  f2fs_sync_dirty_inodes+0x30e/0x830
[  463.950512][ T6087]  f2fs_write_checkpoint+0xa3d/0x2710
[  463.950539][ T6087]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  463.950576][ T6087]  kill_f2fs_super+0x2dd/0x700
[  463.950593][ T6087]  ? __pfx_kill_f2fs_super+0x10/0x10
[  463.950611][ T6087]  ? call_rcu+0x64b/0x8b0
[  463.950619][ T6087]  ? lockdep_hardirqs_on+0x7a/0x110
[  463.950637][ T6087]  deactivate_locked_super+0xbc/0x110
[  463.950652][ T6087]  cleanup_mnt+0x3d3/0x460
[  463.950665][ T6087]  task_work_run+0x1d9/0x270
[  463.950681][ T6087]  ? __pfx_task_work_run+0x10/0x10
[  463.950698][ T6087]  exit_to_user_mode_loop+0x1fa/0x730
[  463.950710][ T6087]  ? rcu_is_watching+0x15/0xb0
[  463.950723][ T6087]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  463.950733][ T6087]  do_syscall_64+0x353/0x580
[  463.950744][ T6087]  ? trace_irq_disable+0x3b/0x140
[  463.950759][ T6087]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  463.950767][ T6087] RIP: 0033:0x7fbe5c39f257
[  463.950777][ T6087] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  463.950785][ T6087] RSP: 002b:00007ffd72651a58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  463.950795][ T6087] RAX: 0000000000000000 RBX: 00007fbe5c43445c RCX: 00007fbe5c39f257
[  463.950801][ T6087] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd72651b10
[  463.950806][ T6087] RBP: 00007ffd72651b10 R08: 00007ffd72652b10 R09: 00000000ffffffff
[  463.950813][ T6087] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd72652ba0
[  463.950818][ T6087] R13: 00007fbe5c43445c R14: 00000000000713bb R15: 00007ffd72652be0
[  463.950833][ T6087]  </TASK>
[  464.064845][T11448] F2FS-fs (loop0): Small segment_count (9 < 1 * 24)
[  464.067076][T11448] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
[  464.074203][ T6087] F2FS-fs (loop1): Stopped filesystem due to reason: 3
[  464.105715][T11448] F2FS-fs (loop0): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  464.111314][T11448] F2FS-fs (loop0): Try to recover 1th superblock, ret: 0
[  464.113531][T11448] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5
[  464.127369][ T6086] CPU: 0 UID: 0 PID: 6086 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  464.127384][ T6086] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  464.127390][ T6086] Call Trace:
[  464.127394][ T6086]  <TASK>
[  464.127399][ T6086]  dump_stack_lvl+0xe8/0x150
[  464.127418][ T6086]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  464.127434][ T6086]  f2fs_write_end_io+0x124b/0x1710
[  464.127456][ T6086]  __submit_merged_bio+0x258/0x6a0
[  464.127467][ T6086]  ? rcu_is_watching+0x15/0xb0
[  464.127484][ T6086]  __submit_merged_write_cond+0x3c9/0x4e0
[  464.127498][ T6086]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  464.127518][ T6086]  f2fs_write_data_pages+0x2a27/0x36f0
[  464.127545][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  464.127574][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  464.127582][ T6086]  ? __bfs+0x153/0x290
[  464.127594][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  464.127608][ T6086]  ? lockdep_unlock+0x5d/0xd0
[  464.127617][ T6086]  ? __lock_acquire+0x13e8/0x2cf0
[  464.127639][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  464.127651][ T6086]  do_writepages+0x338/0x560
[  464.127669][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  464.127680][ T6086]  filemap_fdatawrite+0x1e9/0x2f0
[  464.127694][ T6086]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  464.127724][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  464.127734][ T6086]  f2fs_sync_dirty_inodes+0x30e/0x830
2026/08/02 08:15:14 executed programs: 1290
[  464.127753][ T6086]  f2fs_write_checkpoint+0xa3d/0x2710
[  464.127779][ T6086]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  464.127813][ T6086]  kill_f2fs_super+0x2dd/0x700
[  464.127829][ T6086]  ? __pfx_kill_f2fs_super+0x10/0x10
[  464.127846][ T6086]  ? call_rcu+0x64b/0x8b0
[  464.127854][ T6086]  ? lockdep_hardirqs_on+0x7a/0x110
[  464.127871][ T6086]  deactivate_locked_super+0xbc/0x110
[  464.127886][ T6086]  cleanup_mnt+0x3d3/0x460
[  464.127897][ T6086]  task_work_run+0x1d9/0x270
[  464.127913][ T6086]  ? __pfx_task_work_run+0x10/0x10
[  464.127930][ T6086]  exit_to_user_mode_loop+0x1fa/0x730
[  464.127942][ T6086]  ? rcu_is_watching+0x15/0xb0
[  464.127954][ T6086]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  464.127964][ T6086]  do_syscall_64+0x353/0x580
[  464.127974][ T6086]  ? trace_irq_disable+0x3b/0x140
[  464.127989][ T6086]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  464.127997][ T6086] RIP: 0033:0x7f91c5b9f257
[  464.128006][ T6086] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  464.128014][ T6086] RSP: 002b:00007ffcdf6e3ae8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  464.128024][ T6086] RAX: 0000000000000000 RBX: 00007f91c5c3445c RCX: 00007f91c5b9f257
[  464.128030][ T6086] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcdf6e3ba0
[  464.128036][ T6086] RBP: 00007ffcdf6e3ba0 R08: 00007ffcdf6e4ba0 R09: 00000000ffffffff
[  464.128042][ T6086] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcdf6e4c30
[  464.128047][ T6086] R13: 00007f91c5c3445c R14: 0000000000071474 R15: 00007ffcdf6e4c70
[  464.128060][ T6086]  </TASK>
[  464.128064][ T6086] F2FS-fs (loop0): Stopped filesystem due to reason: 3
[  464.238823][T11452] F2FS-fs (loop2): Small segment_count (9 < 1 * 24)
[  464.255685][T11452] F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock
[  464.362007][T11452] F2FS-fs (loop2): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  464.382577][T11452] F2FS-fs (loop2): Try to recover 1th superblock, ret: 0
[  464.384888][T11452] F2FS-fs (loop2): Mounted with checkpoint version = 48b305e5
[  464.415945][ T6092] CPU: 0 UID: 0 PID: 6092 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  464.415962][ T6092] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  464.415968][ T6092] Call Trace:
[  464.415973][ T6092]  <TASK>
[  464.415978][ T6092]  dump_stack_lvl+0xe8/0x150
[  464.415997][ T6092]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  464.416013][ T6092]  f2fs_write_end_io+0x124b/0x1710
[  464.416037][ T6092]  __submit_merged_bio+0x258/0x6a0
[  464.416048][ T6092]  ? rcu_is_watching+0x15/0xb0
[  464.416065][ T6092]  __submit_merged_write_cond+0x3c9/0x4e0
[  464.416080][ T6092]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  464.416101][ T6092]  f2fs_write_data_pages+0x2a27/0x36f0
[  464.416147][ T6092]  ? __lock_acquire+0x683/0x2cf0
[  464.416177][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  464.416209][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  464.416217][ T6092]  ? __bfs+0x153/0x290
[  464.416227][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  464.416243][ T6092]  ? lockdep_unlock+0x5d/0xd0
[  464.416253][ T6092]  ? __lock_acquire+0x13e8/0x2cf0
[  464.416276][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  464.416289][ T6092]  do_writepages+0x338/0x560
[  464.416306][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  464.416318][ T6092]  filemap_fdatawrite+0x1e9/0x2f0
[  464.416333][ T6092]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  464.416365][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  464.416376][ T6092]  f2fs_sync_dirty_inodes+0x30e/0x830
[  464.416395][ T6092]  f2fs_write_checkpoint+0xa3d/0x2710
[  464.416423][ T6092]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  464.416459][ T6092]  kill_f2fs_super+0x2dd/0x700
[  464.416476][ T6092]  ? __pfx_kill_f2fs_super+0x10/0x10
[  464.416494][ T6092]  ? call_rcu+0x64b/0x8b0
[  464.416502][ T6092]  ? lockdep_hardirqs_on+0x7a/0x110
[  464.416519][ T6092]  deactivate_locked_super+0xbc/0x110
[  464.416534][ T6092]  cleanup_mnt+0x3d3/0x460
[  464.416546][ T6092]  task_work_run+0x1d9/0x270
[  464.416562][ T6092]  ? __pfx_task_work_run+0x10/0x10
[  464.416579][ T6092]  exit_to_user_mode_loop+0x1fa/0x730
[  464.416592][ T6092]  ? rcu_is_watching+0x15/0xb0
[  464.416604][ T6092]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  464.416614][ T6092]  do_syscall_64+0x353/0x580
[  464.416625][ T6092]  ? trace_irq_disable+0x3b/0x140
[  464.416640][ T6092]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  464.416648][ T6092] RIP: 0033:0x7f835259f257
[  464.416658][ T6092] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  464.416666][ T6092] RSP: 002b:00007fffacbabcb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  464.416676][ T6092] RAX: 0000000000000000 RBX: 00007f835263445c RCX: 00007f835259f257
[  464.416682][ T6092] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffacbabd70
[  464.416688][ T6092] RBP: 00007fffacbabd70 R08: 00007fffacbacd70 R09: 00000000ffffffff
[  464.416694][ T6092] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffacbace00
[  464.416699][ T6092] R13: 00007f835263445c R14: 0000000000071595 R15: 00007fffacbace40
[  464.416713][ T6092]  </TASK>
[  464.416718][ T6092] F2FS-fs (loop2): Stopped filesystem due to reason: 3
[  464.613867][T11458] F2FS-fs (loop1): Small segment_count (9 < 1 * 24)
[  464.620475][T11458] F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock
[  464.685459][T11458] F2FS-fs (loop1): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  464.710463][T11458] F2FS-fs (loop1): Try to recover 1th superblock, ret: 0
[  464.712767][T11458] F2FS-fs (loop1): Mounted with checkpoint version = 48b305e5
[  464.735919][T11460] F2FS-fs (loop0): Small segment_count (9 < 1 * 24)
[  464.738077][T11460] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
[  464.762410][ T6087] CPU: 1 UID: 0 PID: 6087 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  464.762423][ T6087] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  464.762428][ T6087] Call Trace:
[  464.762433][ T6087]  <TASK>
[  464.762438][ T6087]  dump_stack_lvl+0xe8/0x150
[  464.762458][ T6087]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  464.762495][ T6087]  f2fs_write_end_io+0x124b/0x1710
[  464.762521][ T6087]  __submit_merged_bio+0x258/0x6a0
[  464.762532][ T6087]  ? rcu_is_watching+0x15/0xb0
[  464.762549][ T6087]  __submit_merged_write_cond+0x3c9/0x4e0
[  464.762563][ T6087]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  464.762583][ T6087]  f2fs_write_data_pages+0x2a27/0x36f0
[  464.762595][ T6087]  ? __lock_acquire+0x683/0x2cf0
[  464.762621][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  464.762652][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  464.762660][ T6087]  ? __bfs+0x153/0x290
[  464.762670][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  464.762685][ T6087]  ? lockdep_unlock+0x5d/0xd0
[  464.762694][ T6087]  ? __lock_acquire+0x13e8/0x2cf0
[  464.762716][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  464.762728][ T6087]  do_writepages+0x338/0x560
[  464.762746][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  464.762757][ T6087]  filemap_fdatawrite+0x1e9/0x2f0
[  464.762772][ T6087]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  464.762802][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  464.762815][ T6087]  f2fs_sync_dirty_inodes+0x30e/0x830
[  464.762835][ T6087]  f2fs_write_checkpoint+0xa3d/0x2710
[  464.762860][ T6087]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  464.762895][ T6087]  kill_f2fs_super+0x2dd/0x700
[  464.762910][ T6087]  ? __pfx_kill_f2fs_super+0x10/0x10
[  464.762927][ T6087]  ? call_rcu+0x64b/0x8b0
[  464.762935][ T6087]  ? lockdep_hardirqs_on+0x7a/0x110
[  464.762953][ T6087]  deactivate_locked_super+0xbc/0x110
[  464.762968][ T6087]  cleanup_mnt+0x3d3/0x460
[  464.762980][ T6087]  task_work_run+0x1d9/0x270
[  464.762995][ T6087]  ? __pfx_task_work_run+0x10/0x10
[  464.763012][ T6087]  exit_to_user_mode_loop+0x1fa/0x730
[  464.763025][ T6087]  ? rcu_is_watching+0x15/0xb0
[  464.763038][ T6087]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  464.763047][ T6087]  do_syscall_64+0x353/0x580
[  464.763058][ T6087]  ? trace_irq_disable+0x3b/0x140
[  464.763073][ T6087]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  464.763081][ T6087] RIP: 0033:0x7fbe5c39f257
[  464.763090][ T6087] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  464.763127][ T6087] RSP: 002b:00007ffd72651a58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  464.763141][ T6087] RAX: 0000000000000000 RBX: 00007fbe5c43445c RCX: 00007fbe5c39f257
[  464.763150][ T6087] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd72651b10
[  464.763158][ T6087] RBP: 00007ffd72651b10 R08: 00007ffd72652b10 R09: 00000000ffffffff
[  464.763165][ T6087] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd72652ba0
[  464.763171][ T6087] R13: 00007fbe5c43445c R14: 00000000000716ce R15: 00007ffd72652be0
[  464.763184][ T6087]  </TASK>
[  464.764430][ T6087] F2FS-fs (loop1): Stopped filesystem due to reason: 3
[  464.814642][T11460] F2FS-fs (loop0): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  464.868012][T11460] F2FS-fs (loop0): Try to recover 1th superblock, ret: 0
[  464.871370][T11460] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5
[  464.915120][ T6086] CPU: 0 UID: 0 PID: 6086 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  464.915136][ T6086] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  464.915141][ T6086] Call Trace:
[  464.915147][ T6086]  <TASK>
[  464.915151][ T6086]  dump_stack_lvl+0xe8/0x150
[  464.915172][ T6086]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  464.915187][ T6086]  f2fs_write_end_io+0x124b/0x1710
[  464.915210][ T6086]  __submit_merged_bio+0x258/0x6a0
[  464.915220][ T6086]  ? rcu_is_watching+0x15/0xb0
[  464.915238][ T6086]  __submit_merged_write_cond+0x3c9/0x4e0
[  464.915252][ T6086]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  464.915272][ T6086]  f2fs_write_data_pages+0x2a27/0x36f0
[  464.915284][ T6086]  ? __lock_acquire+0x683/0x2cf0
[  464.915310][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  464.915339][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  464.915347][ T6086]  ? __bfs+0x153/0x290
[  464.915357][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  464.915372][ T6086]  ? lockdep_unlock+0x5d/0xd0
[  464.915381][ T6086]  ? __lock_acquire+0x13e8/0x2cf0
[  464.915403][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  464.915415][ T6086]  do_writepages+0x338/0x560
[  464.915432][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  464.915443][ T6086]  filemap_fdatawrite+0x1e9/0x2f0
[  464.915458][ T6086]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  464.915487][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  464.915498][ T6086]  f2fs_sync_dirty_inodes+0x30e/0x830
[  464.915517][ T6086]  f2fs_write_checkpoint+0xa3d/0x2710
[  464.915543][ T6086]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  464.915577][ T6086]  kill_f2fs_super+0x2dd/0x700
[  464.915611][ T6086]  ? __pfx_kill_f2fs_super+0x10/0x10
[  464.915629][ T6086]  ? call_rcu+0x64b/0x8b0
[  464.915636][ T6086]  ? lockdep_hardirqs_on+0x7a/0x110
[  464.915654][ T6086]  deactivate_locked_super+0xbc/0x110
[  464.915668][ T6086]  cleanup_mnt+0x3d3/0x460
[  464.915680][ T6086]  task_work_run+0x1d9/0x270
[  464.915696][ T6086]  ? __pfx_task_work_run+0x10/0x10
[  464.915712][ T6086]  exit_to_user_mode_loop+0x1fa/0x730
[  464.915724][ T6086]  ? rcu_is_watching+0x15/0xb0
[  464.915737][ T6086]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  464.915747][ T6086]  do_syscall_64+0x353/0x580
[  464.915757][ T6086]  ? trace_irq_disable+0x3b/0x140
[  464.915771][ T6086]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  464.915780][ T6086] RIP: 0033:0x7f91c5b9f257
[  464.915790][ T6086] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  464.915797][ T6086] RSP: 002b:00007ffcdf6e3ae8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  464.915808][ T6086] RAX: 0000000000000000 RBX: 00007f91c5c3445c RCX: 00007f91c5b9f257
[  464.915813][ T6086] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcdf6e3ba0
[  464.915819][ T6086] RBP: 00007ffcdf6e3ba0 R08: 00007ffcdf6e4ba0 R09: 00000000ffffffff
[  464.915825][ T6086] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcdf6e4c30
[  464.915830][ T6086] R13: 00007f91c5c3445c R14: 0000000000071785 R15: 00007ffcdf6e4c70
[  464.915843][ T6086]  </TASK>
[  465.020616][ T6086] F2FS-fs (loop0): Stopped filesystem due to reason: 3
[  465.049255][T11464] F2FS-fs (loop2): Small segment_count (9 < 1 * 24)
[  465.051594][T11464] F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock
[  465.091118][T11464] F2FS-fs (loop2): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  465.097484][T11464] F2FS-fs (loop2): Try to recover 1th superblock, ret: 0
[  465.099765][T11464] F2FS-fs (loop2): Mounted with checkpoint version = 48b305e5
[  465.113952][ T6092] CPU: 0 UID: 0 PID: 6092 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  465.113975][ T6092] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  465.113981][ T6092] Call Trace:
[  465.113985][ T6092]  <TASK>
[  465.113990][ T6092]  dump_stack_lvl+0xe8/0x150
[  465.114009][ T6092]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  465.114025][ T6092]  f2fs_write_end_io+0x124b/0x1710
[  465.114054][ T6092]  __submit_merged_bio+0x258/0x6a0
[  465.114065][ T6092]  ? rcu_is_watching+0x15/0xb0
[  465.114116][ T6092]  __submit_merged_write_cond+0x3c9/0x4e0
[  465.114132][ T6092]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  465.114153][ T6092]  f2fs_write_data_pages+0x2a27/0x36f0
[  465.114182][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  465.114214][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  465.114222][ T6092]  ? __bfs+0x153/0x290
[  465.114232][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  465.114248][ T6092]  ? lockdep_unlock+0x5d/0xd0
[  465.114257][ T6092]  ? __lock_acquire+0x13e8/0x2cf0
[  465.114280][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  465.114292][ T6092]  do_writepages+0x338/0x560
[  465.114310][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  465.114322][ T6092]  filemap_fdatawrite+0x1e9/0x2f0
[  465.114336][ T6092]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  465.114368][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  465.114379][ T6092]  f2fs_sync_dirty_inodes+0x30e/0x830
[  465.114399][ T6092]  f2fs_write_checkpoint+0xa3d/0x2710
[  465.114426][ T6092]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  465.114463][ T6092]  kill_f2fs_super+0x2dd/0x700
[  465.114480][ T6092]  ? __pfx_kill_f2fs_super+0x10/0x10
[  465.114498][ T6092]  ? call_rcu+0x64b/0x8b0
[  465.114505][ T6092]  ? lockdep_hardirqs_on+0x7a/0x110
[  465.114523][ T6092]  deactivate_locked_super+0xbc/0x110
[  465.114538][ T6092]  cleanup_mnt+0x3d3/0x460
[  465.114551][ T6092]  task_work_run+0x1d9/0x270
[  465.114567][ T6092]  ? __pfx_task_work_run+0x10/0x10
[  465.114584][ T6092]  exit_to_user_mode_loop+0x1fa/0x730
[  465.114596][ T6092]  ? rcu_is_watching+0x15/0xb0
[  465.114609][ T6092]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  465.114619][ T6092]  do_syscall_64+0x353/0x580
[  465.114630][ T6092]  ? trace_irq_disable+0x3b/0x140
[  465.114645][ T6092]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  465.114654][ T6092] RIP: 0033:0x7f835259f257
[  465.114664][ T6092] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  465.114671][ T6092] RSP: 002b:00007fffacbabcb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  465.114682][ T6092] RAX: 0000000000000000 RBX: 00007f835263445c RCX: 00007f835259f257
[  465.114688][ T6092] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffacbabd70
[  465.114693][ T6092] RBP: 00007fffacbabd70 R08: 00007fffacbacd70 R09: 00000000ffffffff
[  465.114699][ T6092] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffacbace00
[  465.114705][ T6092] R13: 00007f835263445c R14: 000000000007169c R15: 00007fffacbace40
[  465.114719][ T6092]  </TASK>
[  465.114724][ T6092] F2FS-fs (loop2): Stopped filesystem due to reason: 3
[  465.266449][T11470] F2FS-fs (loop1): Small segment_count (9 < 1 * 24)
[  465.271426][T11470] F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock
[  465.305769][T11470] F2FS-fs (loop1): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  465.312097][T11470] F2FS-fs (loop1): Try to recover 1th superblock, ret: 0
[  465.314392][T11470] F2FS-fs (loop1): Mounted with checkpoint version = 48b305e5
[  465.345930][ T6087] CPU: 0 UID: 0 PID: 6087 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  465.345968][ T6087] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  465.345975][ T6087] Call Trace:
[  465.345980][ T6087]  <TASK>
[  465.345985][ T6087]  dump_stack_lvl+0xe8/0x150
[  465.346004][ T6087]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  465.346021][ T6087]  f2fs_write_end_io+0x124b/0x1710
[  465.346044][ T6087]  __submit_merged_bio+0x258/0x6a0
[  465.346054][ T6087]  ? rcu_is_watching+0x15/0xb0
[  465.346107][ T6087]  __submit_merged_write_cond+0x3c9/0x4e0
[  465.346122][ T6087]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  465.346143][ T6087]  f2fs_write_data_pages+0x2a27/0x36f0
[  465.346171][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  465.346203][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  465.346211][ T6087]  ? __bfs+0x153/0x290
[  465.346222][ T6087]  ? __pfx_hlock_conflict+0x10/0x10
[  465.346238][ T6087]  ? lockdep_unlock+0x5d/0xd0
[  465.346247][ T6087]  ? __lock_acquire+0x13e8/0x2cf0
[  465.346270][ T6087]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  465.346282][ T6087]  do_writepages+0x338/0x560
[  465.346300][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  465.346312][ T6087]  filemap_fdatawrite+0x1e9/0x2f0
[  465.346326][ T6087]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  465.346358][ T6087]  ? do_raw_spin_unlock+0x4d/0x210
[  465.346369][ T6087]  f2fs_sync_dirty_inodes+0x30e/0x830
[  465.346389][ T6087]  f2fs_write_checkpoint+0xa3d/0x2710
[  465.346416][ T6087]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  465.346453][ T6087]  kill_f2fs_super+0x2dd/0x700
[  465.346470][ T6087]  ? __pfx_kill_f2fs_super+0x10/0x10
[  465.346487][ T6087]  ? call_rcu+0x64b/0x8b0
[  465.346495][ T6087]  ? lockdep_hardirqs_on+0x7a/0x110
[  465.346512][ T6087]  deactivate_locked_super+0xbc/0x110
[  465.346532][ T6087]  cleanup_mnt+0x3d3/0x460
[  465.346545][ T6087]  task_work_run+0x1d9/0x270
[  465.346561][ T6087]  ? __pfx_task_work_run+0x10/0x10
[  465.346578][ T6087]  exit_to_user_mode_loop+0x1fa/0x730
[  465.346590][ T6087]  ? rcu_is_watching+0x15/0xb0
[  465.346603][ T6087]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  465.346613][ T6087]  do_syscall_64+0x353/0x580
[  465.346623][ T6087]  ? trace_irq_disable+0x3b/0x140
[  465.346638][ T6087]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  465.346646][ T6087] RIP: 0033:0x7fbe5c39f257
[  465.346656][ T6087] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  465.346664][ T6087] RSP: 002b:00007ffd72651a58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  465.346675][ T6087] RAX: 0000000000000000 RBX: 00007fbe5c43445c RCX: 00007fbe5c39f257
[  465.346681][ T6087] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd72651b10
[  465.346686][ T6087] RBP: 00007ffd72651b10 R08: 00007ffd72652b10 R09: 00000000ffffffff
[  465.346691][ T6087] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd72652ba0
[  465.346697][ T6087] R13: 00007fbe5c43445c R14: 0000000000071936 R15: 00007ffd72652be0
[  465.346711][ T6087]  </TASK>
[  465.496438][ T6087] F2FS-fs (loop1): Stopped filesystem due to reason: 3
[  465.705162][T11476] F2FS-fs (loop2): Small segment_count (9 < 1 * 24)
[  465.708943][T11476] F2FS-fs (loop2): Can't find valid F2FS filesystem in 1th superblock
[  465.713016][T11474] F2FS-fs (loop0): Small segment_count (9 < 1 * 24)
[  465.716224][T11474] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
[  465.776500][T11476] F2FS-fs (loop2): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  465.790725][T11476] F2FS-fs (loop2): Try to recover 1th superblock, ret: 0
[  465.792959][T11476] F2FS-fs (loop2): Mounted with checkpoint version = 48b305e5
[  465.797913][T11474] F2FS-fs (loop0): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  465.810476][T11474] F2FS-fs (loop0): Try to recover 1th superblock, ret: 0
[  465.813525][T11474] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5
[  465.826192][ T6092] CPU: 0 UID: 0 PID: 6092 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  465.826207][ T6092] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  465.826213][ T6092] Call Trace:
[  465.826218][ T6092]  <TASK>
[  465.826223][ T6092]  dump_stack_lvl+0xe8/0x150
[  465.826263][ T6092]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  465.826280][ T6092]  f2fs_write_end_io+0x124b/0x1710
[  465.826303][ T6092]  __submit_merged_bio+0x258/0x6a0
[  465.826314][ T6092]  ? rcu_is_watching+0x15/0xb0
[  465.826332][ T6092]  __submit_merged_write_cond+0x3c9/0x4e0
[  465.826346][ T6092]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  465.826367][ T6092]  f2fs_write_data_pages+0x2a27/0x36f0
[  465.826379][ T6092]  ? __lock_acquire+0x683/0x2cf0
[  465.826407][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  465.826438][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  465.826446][ T6092]  ? __bfs+0x153/0x290
[  465.826456][ T6092]  ? __pfx_hlock_conflict+0x10/0x10
[  465.826472][ T6092]  ? lockdep_unlock+0x5d/0xd0
[  465.826481][ T6092]  ? __lock_acquire+0x13e8/0x2cf0
[  465.826510][ T6092]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  465.826522][ T6092]  do_writepages+0x338/0x560
[  465.826540][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  465.826551][ T6092]  filemap_fdatawrite+0x1e9/0x2f0
[  465.826567][ T6092]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  465.826599][ T6092]  ? do_raw_spin_unlock+0x4d/0x210
[  465.826610][ T6092]  f2fs_sync_dirty_inodes+0x30e/0x830
[  465.826630][ T6092]  f2fs_write_checkpoint+0xa3d/0x2710
[  465.826657][ T6092]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  465.826694][ T6092]  kill_f2fs_super+0x2dd/0x700
[  465.826710][ T6092]  ? __pfx_kill_f2fs_super+0x10/0x10
[  465.826728][ T6092]  ? call_rcu+0x64b/0x8b0
[  465.826736][ T6092]  ? lockdep_hardirqs_on+0x7a/0x110
[  465.826753][ T6092]  deactivate_locked_super+0xbc/0x110
[  465.826768][ T6092]  cleanup_mnt+0x3d3/0x460
[  465.826780][ T6092]  task_work_run+0x1d9/0x270
[  465.826795][ T6092]  ? __pfx_task_work_run+0x10/0x10
[  465.826812][ T6092]  exit_to_user_mode_loop+0x1fa/0x730
[  465.826824][ T6092]  ? rcu_is_watching+0x15/0xb0
[  465.826837][ T6092]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  465.826847][ T6092]  do_syscall_64+0x353/0x580
[  465.826857][ T6092]  ? trace_irq_disable+0x3b/0x140
[  465.826872][ T6092]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  465.826880][ T6092] RIP: 0033:0x7f835259f257
[  465.826890][ T6092] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  465.826898][ T6092] RSP: 002b:00007fffacbabcb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  465.826908][ T6092] RAX: 0000000000000000 RBX: 00007f835263445c RCX: 00007f835259f257
[  465.826914][ T6092] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffacbabd70
[  465.826920][ T6092] RBP: 00007fffacbabd70 R08: 00007fffacbacd70 R09: 00000000ffffffff
[  465.826926][ T6092] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffacbace00
[  465.826931][ T6092] R13: 00007f835263445c R14: 0000000000071b12 R15: 00007fffacbace40
[  465.826945][ T6092]  </TASK>
[  465.829957][ T6092] F2FS-fs (loop2): Stopped filesystem due to reason: 3
[  465.908151][T11478] F2FS-fs (loop1): Small segment_count (9 < 1 * 24)
[  465.936715][ T6086] CPU: 1 UID: 0 PID: 6086 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  465.936728][ T6086] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  465.936735][ T6086] Call Trace:
[  465.936741][ T6086]  <TASK>
[  465.936746][ T6086]  dump_stack_lvl+0xe8/0x150
[  465.936766][ T6086]  f2fs_stop_checkpoint+0x3f6/0x5d0
[  465.936782][ T6086]  f2fs_write_end_io+0x124b/0x1710
[  465.936805][ T6086]  __submit_merged_bio+0x258/0x6a0
[  465.936815][ T6086]  ? rcu_is_watching+0x15/0xb0
[  465.936832][ T6086]  __submit_merged_write_cond+0x3c9/0x4e0
[  465.936847][ T6086]  ? __pfx___submit_merged_write_cond+0x10/0x10
[  465.936867][ T6086]  f2fs_write_data_pages+0x2a27/0x36f0
[  465.936879][ T6086]  ? __lock_acquire+0x683/0x2cf0
[  465.936905][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  465.936935][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  465.936942][ T6086]  ? __bfs+0x153/0x290
[  465.936953][ T6086]  ? __pfx_hlock_conflict+0x10/0x10
[  465.936967][ T6086]  ? lockdep_unlock+0x5d/0xd0
[  465.936977][ T6086]  ? __lock_acquire+0x13e8/0x2cf0
[  465.936998][ T6086]  ? __pfx_f2fs_write_data_pages+0x10/0x10
[  465.937010][ T6086]  do_writepages+0x338/0x560
[  465.937070][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  465.937087][ T6086]  filemap_fdatawrite+0x1e9/0x2f0
[  465.937104][ T6086]  ? __pfx_filemap_fdatawrite+0x10/0x10
[  465.937133][ T6086]  ? do_raw_spin_unlock+0x4d/0x210
[  465.937144][ T6086]  f2fs_sync_dirty_inodes+0x30e/0x830
[  465.937165][ T6086]  f2fs_write_checkpoint+0xa3d/0x2710
[  465.937190][ T6086]  ? __pfx_f2fs_write_checkpoint+0x10/0x10
[  465.937225][ T6086]  kill_f2fs_super+0x2dd/0x700
[  465.937263][ T6086]  ? __pfx_kill_f2fs_super+0x10/0x10
[  465.937280][ T6086]  ? call_rcu+0x64b/0x8b0
[  465.937288][ T6086]  ? lockdep_hardirqs_on+0x7a/0x110
[  465.937305][ T6086]  deactivate_locked_super+0xbc/0x110
[  465.937320][ T6086]  cleanup_mnt+0x3d3/0x460
[  465.937333][ T6086]  task_work_run+0x1d9/0x270
[  465.937349][ T6086]  ? __pfx_task_work_run+0x10/0x10
[  465.937365][ T6086]  exit_to_user_mode_loop+0x1fa/0x730
[  465.937377][ T6086]  ? rcu_is_watching+0x15/0xb0
[  465.937391][ T6086]  ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  465.937400][ T6086]  do_syscall_64+0x353/0x580
[  465.937411][ T6086]  ? trace_irq_disable+0x3b/0x140
[  465.937427][ T6086]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[  465.937435][ T6086] RIP: 0033:0x7f91c5b9f257
[  465.937444][ T6086] Code: a2 c7 05 9c 44 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
[  465.937451][ T6086] RSP: 002b:00007ffcdf6e3ae8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
[  465.937461][ T6086] RAX: 0000000000000000 RBX: 00007f91c5c3445c RCX: 00007f91c5b9f257
[  465.937467][ T6086] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcdf6e3ba0
[  465.937472][ T6086] RBP: 00007ffcdf6e3ba0 R08: 00007ffcdf6e4ba0 R09: 00000000ffffffff
[  465.937478][ T6086] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcdf6e4c30
[  465.937483][ T6086] R13: 00007f91c5c3445c R14: 0000000000071b21 R15: 00007ffcdf6e4c70
[  465.937496][ T6086]  </TASK>
[  465.939689][ T6086] F2FS-fs (loop0): Stopped filesystem due to reason: 3
[  465.970488][T11478] F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock
[  466.037942][T11478] F2FS-fs (loop1): f2fs_recover_fsync_data: recovery fsync data, check_only: 0
[  466.126954][T11478] F2FS-fs (loop1): Try to recover 1th superblock, ret: 0
[  466.140967][T11478] F2FS-fs (loop1): Mounted with checkpoint version = 48b305e5
[  466.169411][ T6087] CPU: 0 UID: 0 PID: 6087 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
[  466.169429][ T6087] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[  466.169435][ T6087] Call Trace:
[  466.169440][ T6087]  <TASK>

[host] Command execution timed out after 6m0s