[ 9120.253467] ------------[ cut here ]------------
[ 9120.254403] WARNING: CPU: 2 PID: 1984815 at fs/super.c:1676 __sb_start_write+0x26c/0x290
[ 9120.255163] Modules linked in: dm_snapshot dm_thin_pool dm_persistent_data dm_bio_prison dm_bufio dm_log_writes dm_dust dm_flakey dm_mod loop btrfs blake2b_generic xor raid6_pq libcrc32c intel_rapl_msr intel_rapl_common kvm_intel kvm irqbypass crct10dif_pclmul ghash_clmulni_intel aesni_intel crypto_simd cryptd glue_helper bochs_drm ppdev drm_vram_helper parport_pc drm_ttm_helper input_leds joydev ttm led_class sg parport drm_kms_helper evdev serio_raw button pcspkr qemu_fw_cfg drm ip_tables x_tables autofs4 ext4 crc32c_generic crc16 mbcache jbd2 sd_mod t10_pi virtio_scsi virtio_net net_failover failover ata_generic ata_piix crc32_pclmul crc32c_intel libata scsi_mod i2c_piix4 virtio_pci psmouse virtio_ring virtio [last unloaded: scsi_debug]
[ 9120.260002] CPU: 2 PID: 1984815 Comm: fsstress Not tainted 5.9.0-btrfs-next-67 #1
[ 9120.260867] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
[ 9120.262765] RIP: 0010:__sb_start_write+0x26c/0x290
[ 9120.263843] Code: 00 00 00 45 31 c9 31 f6 b9 01 00 00 00 41 b8 01 00 00 00 ba 01 00 00 00 e8 c1 e7 db ff 44 89 e8 59 5b 5d 41 5c 41 5d 41 5e c3 <0f> 0b 5b 44 89 e8 5d 41 5c 41 5d 41 5e c3 e8 78 b4 c8 ff e9 60 fe
[ 9120.265632] RSP: 0000:ffffa2ec4b8f7d48 EFLAGS: 00010202
[ 9120.267073] RAX: 0000000080000000 RBX: ffff9769b45914a0 RCX: 0000000000000000
[ 9120.268154] RDX: 0000000000000001 RSI: ffffffffa2eb07f1 RDI: 00000000ffffffff
[ 9120.269095] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 9120.269936] R10: 0000000000000200 R11: 0000000000000000 R12: 0000000000000001
[ 9120.271211] R13: 0000000000000000 R14: ffff9769b4591580 R15: ffffa2ec4b8f7e38
[ 9120.272169] FS:  00007f863cacb240(0000) GS:ffff9769b6600000(0000) knlGS:0000000000000000
[ 9120.273052] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9120.273931] CR2: 00007fd2515e02c0 CR3: 000000020bd64006 CR4: 00000000003706e0
[ 9120.275112] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 9120.276204] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 9120.277204] Call Trace:
[ 9120.278196]  btrfs_page_mkwrite+0x69/0x510 [btrfs]
[ 9120.280004]  do_page_mkwrite+0x56/0xc0
[ 9120.280936]  ? __do_fault+0x38/0x150
[ 9120.281788]  handle_mm_fault+0x1075/0x1bf0
[ 9120.282926]  ? lock_acquire+0x1a4/0x490
[ 9120.283966]  do_user_addr_fault+0x229/0x420
[ 9120.284779]  exc_page_fault+0x84/0x2e0
[ 9120.285591]  ? asm_exc_page_fault+0x8/0x30
[ 9120.286632]  asm_exc_page_fault+0x1e/0x30
[ 9120.287622] RIP: 0033:0x7f863cc2efcd
[ 9120.288417] Code: 01 00 00 48 83 fa 40 77 77 c5 fe 7f 44 17 e0 c5 fe 7f 07 c5 f8 77 c3 66 0f 1f 44 00 00 c5 f8 77 48 89 d1 40 0f b6 c6 48 89 fa <f3> aa 48 89 d0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 39 d1
[ 9120.289995] RSP: 002b:00007ffdf38b8de8 EFLAGS: 00010202
[ 9120.291162] RAX: 0000000000000009 RBX: 0000000000004102 RCX: 0000000000004102
[ 9120.292325] RDX: 00007f863cccd000 RSI: 0000000000000009 RDI: 00007f863cccd000
[ 9120.293347] RBP: 0000000000087000 R08: 0000000000000000 R09: 0000000000087000
[ 9120.294256] R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000032
[ 9120.295040] R13: 00007ffdf38b9410 R14: 00007ffdf38b93c6 R15: 000055faa8b00300
[ 9120.295879] irq event stamp: 0
[ 9120.296874] hardirqs last  enabled at (0): [<0000000000000000>] 0x0
[ 9120.297694] hardirqs last disabled at (0): [<ffffffffa2ea944f>] copy_process+0x88f/0x1c20
[ 9120.298980] softirqs last  enabled at (0): [<ffffffffa2ea944f>] copy_process+0x88f/0x1c20
[ 9120.299798] softirqs last disabled at (0): [<0000000000000000>] 0x0
[ 9120.300629] ---[ end trace 0e92bf8dde540ae3 ]---
[ 9304.806952] INFO: task fsstress:1984814 blocked for more than 120 seconds.
[ 9304.810439]       Tainted: G        W         5.9.0-btrfs-next-67 #1
[ 9304.812543] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 9304.813402] task:fsstress        state:D stack:    0 pid:1984814 ppid:1984769 flags:0x00004000
[ 9304.814027] Call Trace:
[ 9304.814600]  __schedule+0x386/0xd20
[ 9304.815194]  ? lock_acquired+0x199/0x480
[ 9304.815815]  schedule+0x45/0xe0
[ 9304.816336]  ? rwsem_down_read_slowpath+0x171/0x520
[ 9304.816859]  rwsem_down_read_slowpath+0x171/0x520
[ 9304.817378]  ? lock_contended+0x197/0x560
[ 9304.817873]  ? do_sync_work+0xc0/0xc0
[ 9304.818355]  __down_read+0x71/0x100
[ 9304.818934]  down_read+0xcb/0x140
[ 9304.819438]  iterate_supers+0x78/0xe0
[ 9304.820030]  ksys_sync+0x40/0xb0
[ 9304.820614]  __do_sys_sync+0xa/0x10
[ 9304.821210]  do_syscall_64+0x33/0x80
[ 9304.821780]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 9304.822345] RIP: 0033:0x7f863cbc1bd7
[ 9304.822932] Code: Unable to access opcode bytes at RIP 0x7f863cbc1bad.
[ 9304.823517] RSP: 002b:00007ffdf38b93a8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a2
[ 9304.824118] RAX: ffffffffffffffda RBX: 000055faa8b08560 RCX: 00007f863cbc1bd7
[ 9304.824660] RDX: 0000000000000000 RSI: 000000003cb3e8dc RDI: 000000000000006e
[ 9304.825211] RBP: 00000000000001f4 R08: 000000000000002e R09: 0000000000000002
[ 9304.825750] R10: 00007ffdf38b8e67 R11: 0000000000000206 R12: 000000000000006e
[ 9304.826289] R13: 00007ffdf38b9410 R14: 00007ffdf38b93c6 R15: 000055faa8af53c0
[ 9304.826889] INFO: task fsstress:1984815 blocked for more than 120 seconds.
[ 9304.827438]       Tainted: G        W         5.9.0-btrfs-next-67 #1
[ 9304.827891] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 9304.828412] task:fsstress        state:D stack:    0 pid:1984815 ppid:1984769 flags:0x00000000
[ 9304.828887] Call Trace:
[ 9304.829363]  __schedule+0x386/0xd20
[ 9304.829834]  ? percpu_rwsem_wait+0x142/0x1e0
[ 9304.830292]  schedule+0x45/0xe0
[ 9304.830746]  percpu_rwsem_wait+0x142/0x1e0
[ 9304.831247]  ? percpu_down_write+0x1f0/0x1f0
[ 9304.831733]  __percpu_down_read+0x61/0x80
[ 9304.832191]  __sb_start_write+0x21c/0x290
[ 9304.832618]  vfs_write+0x1a0/0x230
[ 9304.833048]  ksys_write+0x68/0xe0
[ 9304.833477]  do_syscall_64+0x33/0x80
[ 9304.833892]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 9304.834306] RIP: 0033:0x7f863ccacfb3
[ 9304.834814] Code: Unable to access opcode bytes at RIP 0x7f863ccacf89.
[ 9304.835405] RSP: 002b:00007ffdf38b8ec8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9304.835934] RAX: ffffffffffffffda RBX: 0000000000009000 RCX: 00007f863ccacfb3
[ 9304.836460] RDX: 0000000000009000 RSI: 000055faa8e23000 RDI: 0000000000000003
[ 9304.836991] RBP: 0000000000000003 R08: 000055faa8e23000 R09: 00007f863cc8abe0
[ 9304.837506] R10: 0000000001000000 R11: 0000000000000246 R12: 0000000000000033
[ 9304.838014] R13: 00000000004ab000 R14: 000055faa8e23000 R15: 0000000000000000
[ 9304.838515] INFO: task fsstress:1984816 blocked for more than 120 seconds.
[ 9304.839064]       Tainted: G        W         5.9.0-btrfs-next-67 #1
[ 9304.839583] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 9304.840098] task:fsstress        state:D stack:    0 pid:1984816 ppid:1984769 flags:0x00004000
[ 9304.840688] Call Trace:
[ 9304.841122]  __schedule+0x386/0xd20
[ 9304.841547]  ? lock_acquired+0x199/0x480
[ 9304.841971]  schedule+0x45/0xe0
[ 9304.842392]  ? rwsem_down_read_slowpath+0x171/0x520
[ 9304.842898]  rwsem_down_read_slowpath+0x171/0x520
[ 9304.843420]  ? lock_contended+0x197/0x560
[ 9304.843853]  ? do_sync_work+0xc0/0xc0
[ 9304.844283]  __down_read+0x71/0x100
[ 9304.844714]  down_read+0xcb/0x140
[ 9304.845150]  iterate_supers+0x78/0xe0
[ 9304.845654]  ksys_sync+0x40/0xb0
[ 9304.846146]  __do_sys_sync+0xa/0x10
[ 9304.846565]  do_syscall_64+0x33/0x80
[ 9304.847392]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 9304.848284] RIP: 0033:0x7f863cbc1bd7
[ 9304.848795] Code: Unable to access opcode bytes at RIP 0x7f863cbc1bad.
[ 9304.849371] RSP: 002b:00007ffdf38b93a8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a2
[ 9304.849910] RAX: ffffffffffffffda RBX: 000055faa8b08560 RCX: 00007f863cbc1bd7
[ 9304.850534] RDX: 0000000000000000 RSI: 0000000063f5ca4e RDI: 0000000000000088
[ 9304.851083] RBP: 00000000000001f4 R08: 0000000000000046 R09: 00007ffdf38b8a2c
[ 9304.851613] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000088
[ 9304.852132] R13: 00007ffdf38b9410 R14: 00007ffdf38b93c6 R15: 000055faa8af53c0
[ 9304.852545] INFO: task fsstress:1984818 blocked for more than 120 seconds.
[ 9304.853007]       Tainted: G        W         5.9.0-btrfs-next-67 #1
[ 9304.853455] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 9304.853893] task:fsstress        state:D stack:    0 pid:1984818 ppid:1984769 flags:0x00004000
[ 9304.854388] Call Trace:
[ 9304.858001]  __schedule+0x386/0xd20
[ 9304.858638]  ? lock_acquired+0x199/0x480
[ 9304.859223]  schedule+0x45/0xe0
[ 9304.859794]  ? rwsem_down_read_slowpath+0x171/0x520
[ 9304.860361]  rwsem_down_read_slowpath+0x171/0x520
[ 9304.860925]  ? lock_contended+0x197/0x560
[ 9304.861509]  ? sync_inodes_one_sb+0x20/0x20
[ 9304.861968]  __down_read+0x71/0x100
[ 9304.862423]  down_read+0xcb/0x140
[ 9304.862890]  iterate_supers+0x78/0xe0
[ 9304.863332]  ksys_sync+0x60/0xb0
[ 9304.863763]  __do_sys_sync+0xa/0x10
[ 9304.864189]  do_syscall_64+0x33/0x80
[ 9304.864616]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 9304.865051] RIP: 0033:0x7f863cbc1bd7
[ 9304.865480] Code: Unable to access opcode bytes at RIP 0x7f863cbc1bad.
[ 9304.865914] RSP: 002b:00007ffdf38b93a8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a2
[ 9304.866354] RAX: ffffffffffffffda RBX: 000055faa8b08560 RCX: 00007f863cbc1bd7
[ 9304.866800] RDX: 0000000000000000 RSI: 0000000074d38734 RDI: 0000000000000020
[ 9304.867230] RBP: 00000000000001f4 R08: 000000000000005a R09: 00007ffdf38b9374
[ 9304.867653] R10: 000055faa8af1f2f R11: 0000000000000206 R12: 0000000000000020
[ 9304.868078] R13: 00007ffdf38b9410 R14: 00007ffdf38b93c6 R15: 000055faa8af53c0
[ 9304.868510] INFO: task xfs_io:1985866 blocked for more than 120 seconds.
[ 9304.868944]       Tainted: G        W         5.9.0-btrfs-next-67 #1
[ 9304.869386] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 9304.869833] task:xfs_io          state:D stack:    0 pid:1985866 ppid:1985859 flags:0x00004000
[ 9304.870291] Call Trace:
[ 9304.870906]  __schedule+0x386/0xd20
[ 9304.871522]  ? percpu_down_write+0xa2/0x1f0
[ 9304.872100]  schedule+0x45/0xe0
[ 9304.872659]  percpu_down_write+0x185/0x1f0
[ 9304.873227]  freeze_super+0x99/0x160
[ 9304.873788]  __x64_sys_ioctl+0x62/0xb0
[ 9304.874374]  do_syscall_64+0x33/0x80
[ 9304.874898]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 9304.875709] RIP: 0033:0x7f9d9ff4dd87
[ 9304.876281] Code: Unable to access opcode bytes at RIP 0x7f9d9ff4dd5d.
[ 9304.876851] RSP: 002b:00007ffc26f87d88 EFLAGS: 00000206 ORIG_RAX: 0000000000000010
[ 9304.877432] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f9d9ff4dd87
[ 9304.877999] RDX: 00007ffc26f87d9c RSI: ffffffffc0045877 RDI: 0000000000000003
[ 9304.878483] RBP: 00005568eebcd0f0 R08: 00005568eebcd0f0 R09: 00007f9da0017be0
[ 9304.878994] R10: fffffffffffff24a R11: 0000000000000206 R12: 00005568eebcd0d0
[ 9304.879668] R13: 00005568eebcd0d0 R14: 00005568eebcc3c0 R15: 0000000000000001
[ 9304.880143] INFO: task xfs_io:1985882 blocked for more than 120 seconds.
[ 9304.880612]       Tainted: G        W         5.9.0-btrfs-next-67 #1
[ 9304.881086] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 9304.881554] task:xfs_io          state:D stack:    0 pid:1985882 ppid:1985860 flags:0x00000000
[ 9304.882025] Call Trace:
[ 9304.882493]  __schedule+0x386/0xd20
[ 9304.883044]  ? lock_acquired+0x199/0x480
[ 9304.883534]  schedule+0x45/0xe0
[ 9304.884115]  rwsem_down_write_slowpath+0x2d9/0x630
[ 9304.884727]  ? lock_acquire+0x1a4/0x490
[ 9304.885324]  down_write+0xa9/0x130
[ 9304.885901]  freeze_super+0x29/0x160
[ 9304.886470]  __x64_sys_ioctl+0x62/0xb0
[ 9304.887085]  do_syscall_64+0x33/0x80
[ 9304.887671]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 9304.888255] RIP: 0033:0x7f647c42ed87
[ 9304.888832] Code: Unable to access opcode bytes at RIP 0x7f647c42ed5d.
[ 9304.889437] RSP: 002b:00007ffe4c49fee8 EFLAGS: 00000206 ORIG_RAX: 0000000000000010
[ 9304.890036] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f647c42ed87
[ 9304.890593] RDX: 00007ffe4c49fefc RSI: ffffffffc0045877 RDI: 0000000000000003
[ 9304.891359] RBP: 0000560c7f1350f0 R08: 0000560c7f1350f0 R09: 00007f647c4f8be0
[ 9304.892113] R10: fffffffffffff24a R11: 0000000000000206 R12: 0000560c7f1350d0
[ 9304.893022] R13: 0000560c7f1350d0 R14: 0000560c7f1343c0 R15: 0000000000000001
[ 9304.893973] INFO: task xfs_io:1985884 blocked for more than 120 seconds.
[ 9304.894705]       Tainted: G        W         5.9.0-btrfs-next-67 #1
[ 9304.895203] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 9304.895709] task:xfs_io          state:D stack:    0 pid:1985884 ppid:1985878 flags:0x00000000
[ 9304.896221] Call Trace:
[ 9304.896721]  __schedule+0x386/0xd20
[ 9304.897220]  ? lock_acquired+0x199/0x480
[ 9304.897703]  schedule+0x45/0xe0
[ 9304.898176]  rwsem_down_write_slowpath+0x2d9/0x630
[ 9304.898738]  ? lock_acquire+0x1a4/0x490
[ 9304.899324]  ? do_vfs_ioctl+0x4e9/0x7d0
[ 9304.899925]  down_write+0xa9/0x130
[ 9304.900508]  thaw_super+0x12/0x20
[ 9304.901094]  __x64_sys_ioctl+0x62/0xb0
[ 9304.901671]  do_syscall_64+0x33/0x80
[ 9304.902246]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 9304.902760] RIP: 0033:0x7f716ca87d87
[ 9304.903335] Code: Unable to access opcode bytes at RIP 0x7f716ca87d5d.
[ 9304.903928] RSP: 002b:00007fff8e963ad8 EFLAGS: 00000206 ORIG_RAX: 0000000000000010
[ 9304.904509] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f716ca87d87
[ 9304.904999] RDX: 00007fff8e963aec RSI: ffffffffc0045878 RDI: 0000000000000003
[ 9304.905479] RBP: 00005604a9b6e0f0 R08: 00005604a9b6e0f0 R09: 00007f716cb51be0
[ 9304.905959] R10: fffffffffffff24a R11: 0000000000000206 R12: 00005604a9b6e0d0
[ 9304.906439] R13: 00005604a9b6e0d0 R14: 00005604a9b6df80 R15: 0000000000000001
[ 9304.906938] INFO: task xfs_io:1985885 blocked for more than 120 seconds.
[ 9304.907418]       Tainted: G        W         5.9.0-btrfs-next-67 #1
[ 9304.907895] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 9304.908386] task:xfs_io          state:D stack:    0 pid:1985885 ppid:1985877 flags:0x00000000
[ 9304.908871] Call Trace:
[ 9304.909347]  __schedule+0x386/0xd20
[ 9304.909820]  ? lock_acquired+0x199/0x480
[ 9304.910292]  schedule+0x45/0xe0
[ 9304.911068]  rwsem_down_write_slowpath+0x2d9/0x630
[ 9304.911713]  ? lock_acquire+0x1a4/0x490
[ 9304.912301]  down_write+0xa9/0x130
[ 9304.912917]  freeze_super+0x29/0x160
[ 9304.913515]  __x64_sys_ioctl+0x62/0xb0
[ 9304.914103]  do_syscall_64+0x33/0x80
[ 9304.914722]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 9304.915315] RIP: 0033:0x7ff0051d4d87
[ 9304.915897] Code: Unable to access opcode bytes at RIP 0x7ff0051d4d5d.
[ 9304.916481] RSP: 002b:00007fff13515278 EFLAGS: 00000206 ORIG_RAX: 0000000000000010
[ 9304.917125] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007ff0051d4d87
[ 9304.917748] RDX: 00007fff1351528c RSI: ffffffffc0045877 RDI: 0000000000000003
[ 9304.918337] RBP: 00005634da1230f0 R08: 00005634da1230f0 R09: 00007ff00529ebe0
[ 9304.918954] R10: fffffffffffff24a R11: 0000000000000206 R12: 00005634da1230d0
[ 9304.919548] R13: 00005634da1230d0 R14: 00005634da1223c0 R15: 0000000000000001
[ 9304.920151] INFO: lockdep is turned off.
[ 9425.634190] INFO: task fsstress:1984814 blocked for more than 241 seconds.
[ 9425.636906]       Tainted: G        W         5.9.0-btrfs-next-67 #1
[ 9425.641297] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 9425.644666] task:fsstress        state:D stack:    0 pid:1984814 ppid:1984769 flags:0x00004000
[ 9425.647946] Call Trace:
[ 9425.650781]  __schedule+0x386/0xd20
[ 9425.653395]  ? lock_acquired+0x199/0x480
[ 9425.656731]  schedule+0x45/0xe0
[ 9425.660023]  ? rwsem_down_read_slowpath+0x171/0x520
[ 9425.663067]  rwsem_down_read_slowpath+0x171/0x520
[ 9425.665785]  ? lock_contended+0x197/0x560
[ 9425.667903]  ? do_sync_work+0xc0/0xc0
[ 9425.670118]  __down_read+0x71/0x100
[ 9425.671730]  down_read+0xcb/0x140
[ 9425.673345]  iterate_supers+0x78/0xe0
[ 9425.675014]  ksys_sync+0x40/0xb0
[ 9425.676329]  __do_sys_sync+0xa/0x10
[ 9425.677588]  do_syscall_64+0x33/0x80
[ 9425.678874]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 9425.680121] RIP: 0033:0x7f863cbc1bd7
[ 9425.681135] Code: Unable to access opcode bytes at RIP 0x7f863cbc1bad.
[ 9425.682187] RSP: 002b:00007ffdf38b93a8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a2
[ 9425.683263] RAX: ffffffffffffffda RBX: 000055faa8b08560 RCX: 00007f863cbc1bd7
[ 9425.684325] RDX: 0000000000000000 RSI: 000000003cb3e8dc RDI: 000000000000006e
[ 9425.685155] RBP: 00000000000001f4 R08: 000000000000002e R09: 0000000000000002
[ 9425.685915] R10: 00007ffdf38b8e67 R11: 0000000000000206 R12: 000000000000006e
[ 9425.687156] R13: 00007ffdf38b9410 R14: 00007ffdf38b93c6 R15: 000055faa8af53c0
[ 9425.688383] INFO: task fsstress:1984815 blocked for more than 241 seconds.
[ 9425.689488]       Tainted: G        W         5.9.0-btrfs-next-67 #1
[ 9425.690407] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 9425.691289] task:fsstress        state:D stack:    0 pid:1984815 ppid:1984769 flags:0x00000000
[ 9425.692198] Call Trace:
[ 9425.693128]  __schedule+0x386/0xd20
[ 9425.694066]  ? percpu_rwsem_wait+0x142/0x1e0
[ 9425.695036]  schedule+0x45/0xe0
[ 9425.695735]  percpu_rwsem_wait+0x142/0x1e0
[ 9425.696309]  ? percpu_down_write+0x1f0/0x1f0
[ 9425.696877]  __percpu_down_read+0x61/0x80
[ 9425.697439]  __sb_start_write+0x21c/0x290
[ 9425.698397]  vfs_write+0x1a0/0x230
[ 9425.699171]  ksys_write+0x68/0xe0
[ 9425.699849]  do_syscall_64+0x33/0x80
[ 9425.700480]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 9425.701081] RIP: 0033:0x7f863ccacfb3
[ 9425.701837] Code: Unable to access opcode bytes at RIP 0x7f863ccacf89.
[ 9425.702602] RSP: 002b:00007ffdf38b8ec8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9425.703271] RAX: ffffffffffffffda RBX: 0000000000009000 RCX: 00007f863ccacfb3
[ 9425.703878] RDX: 0000000000009000 RSI: 000055faa8e23000 RDI: 0000000000000003
[ 9425.704503] RBP: 0000000000000003 R08: 000055faa8e23000 R09: 00007f863cc8abe0
[ 9425.705099] R10: 0000000001000000 R11: 0000000000000246 R12: 0000000000000033
[ 9425.705538] R13: 00000000004ab000 R14: 000055faa8e23000 R15: 0000000000000000
[ 9425.706045] INFO: lockdep is turned off.