Created attachment 300595 [details] corrupted image and .config - Overview general protection fault at fs/btrfs/print-tree.c: btrfs_print_leaf() when mount and umount a corrupted btrfs image - Reproduce tested on kernel 5.17-rc8, 5.17 $ mkdir mnt $ sudo mount tmp28.img mnt $ sudo umount mnt - Kernel dump [ 274.989502] loop0: detected capacity change from 0 to 262144 [ 275.009711] BTRFS: device fsid a62e00e8-e94e-4200-8217-12444de93c2e devid 1 transid 8 /dev/loop0 scanned by mount (3362) [ 275.010949] BTRFS info (device loop0): disk space caching is enabled [ 275.010954] BTRFS info (device loop0): has skinny extents [ 275.229025] ------------[ cut here ]------------ [ 275.229029] WARNING: CPU: 0 PID: 3397 at fs/btrfs/extent-tree.c:3070 __btrfs_free_extent.isra.44+0x8f8/0x1620 [ 275.229037] Modules linked in: iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi joydev input_leds serio_raw qemu_fw_cfg xfs autofs4 raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx raid1 raid0 multipath linear hid_generic usbhid hid qxl drm_ttm_helper ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel psmouse aesni_intel crypto_simd cryptd [ 275.229074] CPU: 0 PID: 3397 Comm: umount Not tainted 5.17.0 #1 [ 275.229077] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-1ubuntu1.1 04/01/2014 [ 275.229079] RIP: 0010:__btrfs_free_extent.isra.44+0x8f8/0x1620 [ 275.229082] Code: 00 48 c7 c6 c0 dd 25 bd e8 09 aa 7b 00 48 83 05 65 d6 19 02 01 c7 44 24 10 ea ff ff ff e9 e3 f9 ff ff 48 83 05 40 d5 19 02 01 <0f> 0b 48 8b 3b 48 83 05 3b d5 19 02 01 e8 46 9a 00 00 ff b4 24 a8 [ 275.229084] RSP: 0018:ffffbdbf40927b30 EFLAGS: 00010202 [ 275.229086] RAX: 00000000fffffffe RBX: ffff95aa8fc260e0 RCX: 0000000000000000 [ 275.229092] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 [ 275.229093] RBP: 0000000001c0e000 R08: 000000000000000a R09: 0000000000000001 [ 275.229094] R10: 0000000000000000 R11: ffff95aa8fc260e0 R12: 0000000000000000 [ 275.229096] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 275.229097] FS: 00007fc7b0e4e080(0000) GS:ffff95ac75c00000(0000) knlGS:0000000000000000 [ 275.229099] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 275.229101] CR2: 0000563faf715c40 CR3: 0000000102ad6005 CR4: 0000000000370ef0 [ 275.229104] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 275.229106] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 275.229107] Call Trace: [ 275.229109] <TASK> [ 275.229113] ? _raw_read_unlock+0x18/0x30 [ 275.229121] ? btrfs_merge_delayed_refs+0x5a6/0x680 [ 275.229125] __btrfs_run_delayed_refs+0x93e/0x1bd0 [ 275.229129] btrfs_run_delayed_refs+0xc3/0x380 [ 275.229132] commit_cowonly_roots+0x293/0x360 [ 275.229136] btrfs_commit_transaction+0x662/0x1690 [ 275.229139] ? start_transaction+0x110/0x980 [ 275.229143] btrfs_sync_fs+0x8d/0x370 [ 275.229146] sync_filesystem+0xcc/0x110 [ 275.229149] generic_shutdown_super+0x3e/0x1f0 [ 275.229152] kill_anon_super+0x16/0x40 [ 275.229154] btrfs_kill_super+0x1a/0x40 [ 275.229156] deactivate_locked_super+0x60/0xc0 [ 275.229159] deactivate_super+0x70/0xb0 [ 275.229161] cleanup_mnt+0x11a/0x200 [ 275.229165] __cleanup_mnt+0x16/0x20 [ 275.229167] task_work_run+0x67/0xa0 [ 275.229170] exit_to_user_mode_prepare+0x18c/0x1a0 [ 275.229174] syscall_exit_to_user_mode+0x26/0x40 [ 275.229178] do_syscall_64+0x46/0xb0 [ 275.229180] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 275.229183] RIP: 0033:0x7fc7b070e657 [ 275.229188] Code: 98 2c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 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 01 f0 ff ff 73 01 c3 48 8b 0d 01 98 2c 00 f7 d8 64 89 01 48 [ 275.229190] RSP: 002b:00007ffd855d6e38 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 [ 275.229192] RAX: 0000000000000000 RBX: 00005555b625c420 RCX: 00007fc7b070e657 [ 275.229194] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 00005555b62640b0 [ 275.229195] RBP: 0000000000000000 R08: 00005555b6264580 R09: 0000000000000005 [ 275.229196] R10: 000000000000000b R11: 0000000000000246 R12: 00005555b62640b0 [ 275.229197] R13: 00007fc7b0c308a4 R14: 00005555b625c600 R15: 0000000000000000 [ 275.229199] </TASK> [ 275.229200] ---[ end trace 0000000000000000 ]--- [ 275.229205] BTRFS info (device loop0): leaf 29405184 gen 9 total ptrs 18 free space 2967 owner 2 [ 275.229208] item 0 key (12582912 204 8388608) itemoff 3971 itemsize 24 [ 275.229210] BTRFS warning (device loop0): bad eb member end: ptr 0xfe8 start 29405184 member offset 4096 size 8 [ 275.229234] general protection fault, probably for non-canonical address 0x1a2f980000000: 0000 [#1] PREEMPT SMP NOPTI [ 275.229294] CPU: 0 PID: 3397 Comm: umount Tainted: G W 5.17.0 #1 [ 275.229324] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-1ubuntu1.1 04/01/2014 [ 275.229356] RIP: 0010:btrfs_get_64+0x9e/0x190 [ 275.229376] Code: c1 fb 06 48 c1 e3 0c 48 03 1d 5e 07 0b 01 e8 49 ed ff ff 49 8d 46 08 4c 01 f3 48 3d 00 10 00 00 77 2e 48 83 05 1a 67 16 02 01 <48> 8b 03 48 8b 4c 24 10 65 48 33 0c 25 28 00 00 00 0f 85 94 00 00 [ 275.229440] RSP: 0018:ffffbdbf40927a40 EFLAGS: 00010202 [ 275.229461] RAX: 0000000000000008 RBX: 0001a2f980000000 RCX: 0000000000000001 [ 275.229487] RDX: 0000000000000000 RSI: ffffffffbd5c25a9 RDI: 00000000ffffffff [ 275.229513] RBP: ffff95aa90226a00 R08: 0000000000000000 R09: 0000000000000001 [ 275.229539] R10: 0000000000000000 R11: 0000000000000034 R12: 0000000000000001 [ 275.229582] R13: ffff95aa90226a08 R14: 0000000000000000 R15: 0000000000000fe8 [ 275.229609] FS: 00007fc7b0e4e080(0000) GS:ffff95ac75c00000(0000) knlGS:0000000000000000 [ 275.229639] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 275.229660] CR2: 0000563faf715c40 CR3: 0000000102ad6005 CR4: 0000000000370ef0 [ 275.229692] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 275.229719] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 275.229744] Call Trace: [ 275.229755] <TASK> [ 275.229766] btrfs_print_leaf+0xa21/0xf00 [ 275.229785] __btrfs_free_extent.isra.44+0x90a/0x1620 [ 275.229807] ? _raw_read_unlock+0x18/0x30 [ 275.229825] ? btrfs_merge_delayed_refs+0x5a6/0x680 [ 275.229847] __btrfs_run_delayed_refs+0x93e/0x1bd0 [ 275.229869] btrfs_run_delayed_refs+0xc3/0x380 [ 275.229888] commit_cowonly_roots+0x293/0x360 [ 275.229905] btrfs_commit_transaction+0x662/0x1690 [ 275.229925] ? start_transaction+0x110/0x980 [ 275.229944] btrfs_sync_fs+0x8d/0x370 [ 275.229960] sync_filesystem+0xcc/0x110 [ 275.229977] generic_shutdown_super+0x3e/0x1f0 [ 275.229995] kill_anon_super+0x16/0x40 [ 275.230012] btrfs_kill_super+0x1a/0x40 [ 275.230028] deactivate_locked_super+0x60/0xc0 [ 275.230047] deactivate_super+0x70/0xb0 [ 275.230064] cleanup_mnt+0x11a/0x200 [ 275.230080] __cleanup_mnt+0x16/0x20 [ 275.230095] task_work_run+0x67/0xa0 [ 275.230111] exit_to_user_mode_prepare+0x18c/0x1a0 [ 275.230132] syscall_exit_to_user_mode+0x26/0x40 [ 275.230152] do_syscall_64+0x46/0xb0 [ 275.230167] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 275.230189] RIP: 0033:0x7fc7b070e657 [ 275.230204] Code: 98 2c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 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 01 f0 ff ff 73 01 c3 48 8b 0d 01 98 2c 00 f7 d8 64 89 01 48 [ 275.231628] RSP: 002b:00007ffd855d6e38 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 [ 275.232333] RAX: 0000000000000000 RBX: 00005555b625c420 RCX: 00007fc7b070e657 [ 275.232989] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 00005555b62640b0 [ 275.233638] RBP: 0000000000000000 R08: 00005555b6264580 R09: 0000000000000005 [ 275.234265] R10: 000000000000000b R11: 0000000000000246 R12: 00005555b62640b0 [ 275.234883] R13: 00007fc7b0c308a4 R14: 00005555b625c600 R15: 0000000000000000 [ 275.235457] </TASK> [ 275.236011] Modules linked in: iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi joydev input_leds serio_raw qemu_fw_cfg xfs autofs4 raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx raid1 raid0 multipath linear hid_generic usbhid hid qxl drm_ttm_helper ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel psmouse aesni_intel crypto_simd cryptd [ 275.238693] ---[ end trace 0000000000000000 ]--- [ 275.239377] RIP: 0010:btrfs_get_64+0x9e/0x190 [ 275.240062] Code: c1 fb 06 48 c1 e3 0c 48 03 1d 5e 07 0b 01 e8 49 ed ff ff 49 8d 46 08 4c 01 f3 48 3d 00 10 00 00 77 2e 48 83 05 1a 67 16 02 01 <48> 8b 03 48 8b 4c 24 10 65 48 33 0c 25 28 00 00 00 0f 85 94 00 00 [ 275.241429] RSP: 0018:ffffbdbf40927a40 EFLAGS: 00010202 [ 275.242147] RAX: 0000000000000008 RBX: 0001a2f980000000 RCX: 0000000000000001 [ 275.242852] RDX: 0000000000000000 RSI: ffffffffbd5c25a9 RDI: 00000000ffffffff [ 275.243569] RBP: ffff95aa90226a00 R08: 0000000000000000 R09: 0000000000000001 [ 275.244263] R10: 0000000000000000 R11: 0000000000000034 R12: 0000000000000001 [ 275.244980] R13: ffff95aa90226a08 R14: 0000000000000000 R15: 0000000000000fe8 [ 275.245737] FS: 00007fc7b0e4e080(0000) GS:ffff95ac75c00000(0000) knlGS:0000000000000000 [ 275.246509] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 275.247278] CR2: 0000563faf715c40 CR3: 0000000102ad6005 CR4: 0000000000370ef0 [ 275.248060] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 275.248800] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Is this a regression or did this happen with earlier kernels (say 5.16) as well?
(In reply to The Linux kernel's regression tracker (Thorsten Leemhuis) from comment #1) > Is this a regression or did this happen with earlier kernels (say 5.16) as > well? Other than 5.17, I tested on 5.16.8, 5.15.32, 5.10.99 and 5.4.171 The general protection fault is triggered on 5.16.8, 5.15.32 and 5.10.99. 5.4.171 does not trigger the general protection fault but has several warnings: [ 97.359467] BTRFS: device fsid a62e00e8-e94e-4200-8217-12444de93c2e devid 1 transid 8 /dev/loop0 [ 97.361414] BTRFS info (device loop0): disk space caching is enabled [ 97.361420] BTRFS info (device loop0): has skinny extents [ 102.556020] ------------[ cut here ]------------ [ 102.556093] WARNING: CPU: 1 PID: 963 at fs/btrfs/extent-tree.c:3101 __btrfs_free_extent+0x457/0x1550 [btrfs] [ 102.556094] Modules linked in: joydev input_leds serio_raw qemu_fw_cfg iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs zstd_decompress zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq raid1 raid0 multipath linear qxl drm_kms_helper hid_generic usbhid syscopyarea sysfillrect sysimgblt hid fb_sys_fops ttm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel drm aesni_intel psmouse glue_helper crypto_simd cryptd [ 102.556116] CPU: 1 PID: 963 Comm: umount Not tainted 5.4.171 #1 [ 102.556117] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-1ubuntu1.1 04/01/2014 [ 102.556134] RIP: 0010:__btrfs_free_extent+0x457/0x1550 [btrfs] [ 102.556135] Code: 48 8b 7c 24 10 49 89 d8 4c 89 f9 4c 89 e6 e8 80 f5 ff ff 41 89 c5 58 45 85 ed 0f 84 c8 00 00 00 41 83 fd fe 0f 85 94 fe ff ff <0f> 0b 4c 89 e2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 [ 102.556136] RSP: 0018:ffff88827e997658 EFLAGS: 00010246 [ 102.556137] RAX: 00000000fffffffe RBX: 0000000000000001 RCX: 0000000000000000 [ 102.556138] RDX: dffffc0000000000 RSI: 0000000000000002 RDI: ffff888283341798 [ 102.556139] RBP: 0000000000000000 R08: 000000000000000c R09: 0000000000000000 [ 102.556140] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888283341790 [ 102.556140] R13: 00000000fffffffe R14: 0000000000000000 R15: 0000000000000000 [ 102.556141] FS: 00007f9ab551a080(0000) GS:ffff888293e80000(0000) knlGS:0000000000000000 [ 102.556142] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 102.556143] CR2: 0000561f4a283068 CR3: 0000000283fa8003 CR4: 0000000000360ee0 [ 102.556145] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 102.556146] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 102.556147] Call Trace: [ 102.556152] ? _raw_spin_lock+0x7a/0xd0 [ 102.556167] ? lookup_extent_data_ref+0x640/0x640 [btrfs] [ 102.556168] ? _raw_spin_lock+0x7a/0xd0 [ 102.556170] ? _raw_spin_trylock+0x100/0x100 [ 102.556172] ? _raw_spin_trylock+0x100/0x100 [ 102.556202] ? btrfs_merge_delayed_refs+0x78d/0xaa0 [btrfs] [ 102.556204] ? _raw_spin_lock+0x7a/0xd0 [ 102.556224] __btrfs_run_delayed_refs+0x40b/0x3110 [btrfs] [ 102.556243] ? btrfs_create_pending_block_groups+0x394/0x610 [btrfs] [ 102.556258] ? btrfs_pin_extent+0x60/0x60 [btrfs] [ 102.556271] ? update_ref_for_cow+0xc70/0xc70 [btrfs] [ 102.556288] ? btrfs_read_block_groups+0x1670/0x1670 [btrfs] [ 102.556290] ? radix_tree_gang_lookup_tag+0x143/0x230 [ 102.556291] ? mutex_lock+0x8e/0xe0 [ 102.556292] ? __mutex_lock_slowpath+0x10/0x10 [ 102.556294] ? _raw_spin_trylock+0x100/0x100 [ 102.556308] btrfs_run_delayed_refs+0x114/0x3b0 [btrfs] [ 102.556325] commit_cowonly_roots+0x193/0x9b0 [btrfs] [ 102.556343] ? btrfs_qgroup_account_extents+0x2ab/0x6d0 [btrfs] [ 102.556358] ? switch_commit_roots+0x560/0x560 [btrfs] [ 102.556373] ? btrfs_run_delayed_refs+0x140/0x3b0 [btrfs] [ 102.556388] btrfs_commit_transaction+0xbb2/0x2500 [btrfs] [ 102.556404] ? btrfs_apply_pending_changes+0xd0/0xd0 [btrfs] [ 102.556420] close_ctree+0x556/0x740 [btrfs] [ 102.556422] ? __fsnotify_vfsmount_delete+0x20/0x20 [ 102.556437] ? transaction_kthread+0x380/0x380 [btrfs] [ 102.556439] ? dispose_list+0x180/0x180 [ 102.556455] ? btrfs_attach_transaction_barrier+0x59/0x70 [btrfs] [ 102.556468] ? btrfs_sync_fs+0x91/0x290 [btrfs] [ 102.556470] generic_shutdown_super+0x12e/0x350 [ 102.556471] kill_anon_super+0x36/0x60 [ 102.556486] btrfs_kill_super+0x3b/0x2b0 [btrfs] [ 102.556491] deactivate_locked_super+0x8d/0xd0 [ 102.556493] deactivate_super+0x130/0x160 [ 102.556494] ? freeze_super+0x3f0/0x3f0 [ 102.556496] ? dput+0x1d4/0x760 [ 102.556497] cleanup_mnt+0x1ee/0x3d0 [ 102.556500] task_work_run+0x11e/0x180 [ 102.556502] exit_to_usermode_loop+0x128/0x150 [ 102.556503] do_syscall_64+0x30f/0x390 [ 102.556505] ? prepare_exit_to_usermode+0xec/0x1a0 [ 102.556506] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 102.556508] RIP: 0033:0x7f9ab4dda657 [ 102.556510] Code: 98 2c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 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 01 f0 ff ff 73 01 c3 48 8b 0d 01 98 2c 00 f7 d8 64 89 01 48 [ 102.556511] RSP: 002b:00007ffeff97ff38 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 [ 102.556512] RAX: 0000000000000000 RBX: 0000561f4a27b420 RCX: 00007f9ab4dda657 [ 102.556513] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000561f4a283450 [ 102.556513] RBP: 0000000000000000 R08: 0000561f4a283580 R09: 0000000000000005 [ 102.556514] R10: 000000000000000b R11: 0000000000000246 R12: 0000561f4a283450 [ 102.556515] R13: 00007f9ab52fc8a4 R14: 0000561f4a27b600 R15: 0000000000000000 [ 102.556516] ---[ end trace a2000179777c6772 ]--- [ 102.556520] BTRFS info (device loop0): leaf 29368320 gen 9 total ptrs 13 free space 3268 owner 2 [ 102.556522] item 0 key (12582912 204 8388608) itemoff 3971 itemsize 24 [ 102.556522] ------------[ cut here ]------------ [ 102.556523] btrfs bad mapping eb start 29368320 len 4096, wanted 4096 8 [ 102.556624] WARNING: CPU: 1 PID: 963 at fs/btrfs/extent_io.c:5676 map_private_extent_buffer+0x1f5/0x390 [btrfs] [ 102.556625] Modules linked in: joydev input_leds serio_raw qemu_fw_cfg iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs zstd_decompress zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq raid1 raid0 multipath linear qxl drm_kms_helper hid_generic usbhid syscopyarea sysfillrect sysimgblt hid fb_sys_fops ttm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel drm aesni_intel psmouse glue_helper crypto_simd cryptd [ 102.556639] CPU: 1 PID: 963 Comm: umount Tainted: G W 5.4.171 #1 [ 102.556639] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-1ubuntu1.1 04/01/2014 [ 102.556657] RIP: 0010:map_private_extent_buffer+0x1f5/0x390 [btrfs] [ 102.556658] Code: 10 00 00 49 c7 00 00 00 00 00 4c 29 f5 e9 f5 fe ff ff 49 89 d0 48 89 f1 48 89 c2 4c 89 fe 48 c7 c7 40 9c a6 c0 e8 eb e1 c9 c4 <0f> 0b b8 ea ff ff ff e9 89 fe ff ff 48 8b 15 a8 08 5d c7 4c 89 e6 [ 102.556659] RSP: 0018:ffff88827e997378 EFLAGS: 00010286 [ 102.556660] RAX: 0000000000000000 RBX: ffff888283faf338 RCX: ffffffff8593c260 [ 102.556661] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888293eaa440 [ 102.556662] RBP: 0000000000000001 R08: ffffed10527d5489 R09: ffffed10527d5489 [ 102.556663] R10: 0000000000001008 R11: ffffed10527d5488 R12: 0000000000001000 [ 102.556663] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000001c02000 [ 102.556668] FS: 00007f9ab551a080(0000) GS:ffff888293e80000(0000) knlGS:0000000000000000 [ 102.556669] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 102.556670] CR2: 0000561f4a283068 CR3: 0000000283fa8003 CR4: 0000000000360ee0 [ 102.556672] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 102.556672] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 102.556673] Call Trace: [ 102.556677] ? up+0x17/0xb0 [ 102.556695] btrfs_get_64+0xbb/0x170 [btrfs] [ 102.556712] ? btrfs_get_token_64+0x2e0/0x2e0 [btrfs] [ 102.556714] ? irq_work_queue+0x9/0x20 [ 102.556716] ? wake_up_klogd+0x42/0x60 [ 102.556717] ? vprintk_emit+0x1f5/0x400 [ 102.556719] ? printk+0x9c/0xc3 [ 102.556720] ? pm_qos_get_value.part.4+0xe/0xe [ 102.556737] ? read_extent_buffer+0x133/0x230 [btrfs] [ 102.556753] btrfs_print_leaf.part.1+0x8f8/0x1060 [btrfs] [ 102.556772] ? btrfs_wait_for_snapshot_creation+0x1d0/0x1d0 [btrfs] [ 102.556774] ? invalid_op+0x1e/0x30 [ 102.556789] __btrfs_free_extent+0x47d/0x1550 [btrfs] [ 102.556791] ? _raw_spin_lock+0x7a/0xd0 [ 102.556805] ? lookup_extent_data_ref+0x640/0x640 [btrfs] [ 102.556807] ? _raw_spin_lock+0x7a/0xd0 [ 102.556808] ? _raw_spin_trylock+0x100/0x100 [ 102.556809] ? _raw_spin_trylock+0x100/0x100 [ 102.556827] ? btrfs_merge_delayed_refs+0x78d/0xaa0 [btrfs] [ 102.556828] ? _raw_spin_lock+0x7a/0xd0 [ 102.556843] __btrfs_run_delayed_refs+0x40b/0x3110 [btrfs] [ 102.556861] ? btrfs_create_pending_block_groups+0x394/0x610 [btrfs] [ 102.556877] ? btrfs_pin_extent+0x60/0x60 [btrfs] [ 102.556891] ? update_ref_for_cow+0xc70/0xc70 [btrfs] [ 102.556908] ? btrfs_read_block_groups+0x1670/0x1670 [btrfs] [ 102.556910] ? radix_tree_gang_lookup_tag+0x143/0x230 [ 102.556911] ? mutex_lock+0x8e/0xe0 [ 102.556912] ? __mutex_lock_slowpath+0x10/0x10 [ 102.556913] ? _raw_spin_trylock+0x100/0x100 [ 102.556928] btrfs_run_delayed_refs+0x114/0x3b0 [btrfs] [ 102.556944] commit_cowonly_roots+0x193/0x9b0 [btrfs] [ 102.556961] ? btrfs_qgroup_account_extents+0x2ab/0x6d0 [btrfs] [ 102.556977] ? switch_commit_roots+0x560/0x560 [btrfs] [ 102.556991] ? btrfs_run_delayed_refs+0x140/0x3b0 [btrfs] [ 102.557007] btrfs_commit_transaction+0xbb2/0x2500 [btrfs] [ 102.557022] ? btrfs_apply_pending_changes+0xd0/0xd0 [btrfs] [ 102.557038] close_ctree+0x556/0x740 [btrfs] [ 102.557040] ? __fsnotify_vfsmount_delete+0x20/0x20 [ 102.557054] ? transaction_kthread+0x380/0x380 [btrfs] [ 102.557056] ? dispose_list+0x180/0x180 [ 102.557071] ? btrfs_attach_transaction_barrier+0x59/0x70 [btrfs] [ 102.557085] ? btrfs_sync_fs+0x91/0x290 [btrfs] [ 102.557087] generic_shutdown_super+0x12e/0x350 [ 102.557088] kill_anon_super+0x36/0x60 [ 102.557102] btrfs_kill_super+0x3b/0x2b0 [btrfs] [ 102.557104] deactivate_locked_super+0x8d/0xd0 [ 102.557105] deactivate_super+0x130/0x160 [ 102.557106] ? freeze_super+0x3f0/0x3f0 [ 102.557108] ? dput+0x1d4/0x760 [ 102.557109] cleanup_mnt+0x1ee/0x3d0 [ 102.557111] task_work_run+0x11e/0x180 [ 102.557112] exit_to_usermode_loop+0x128/0x150 [ 102.557114] do_syscall_64+0x30f/0x390 [ 102.557115] ? prepare_exit_to_usermode+0xec/0x1a0 [ 102.557117] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 102.557118] RIP: 0033:0x7f9ab4dda657 [ 102.557119] Code: 98 2c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 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 01 f0 ff ff 73 01 c3 48 8b 0d 01 98 2c 00 f7 d8 64 89 01 48 [ 102.557120] RSP: 002b:00007ffeff97ff38 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 [ 102.557121] RAX: 0000000000000000 RBX: 0000561f4a27b420 RCX: 00007f9ab4dda657 [ 102.557122] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000561f4a283450 [ 102.557123] RBP: 0000000000000000 R08: 0000561f4a283580 R09: 0000000000000005 [ 102.557123] R10: 000000000000000b R11: 0000000000000246 R12: 0000561f4a283450 [ 102.557124] R13: 00007f9ab52fc8a4 R14: 0000561f4a27b600 R15: 0000000000000000 [ 102.557125] ---[ end trace a2000179777c6773 ]--- [ 102.557151] ------------[ cut here ]------------ [ 102.557152] btrfs bad mapping eb start 29368320 len 4096, wanted 4096 8 [ 102.557231] WARNING: CPU: 1 PID: 963 at fs/btrfs/extent_io.c:5598 read_extent_buffer+0x15e/0x230 [btrfs] [ 102.557233] Modules linked in: joydev input_leds serio_raw qemu_fw_cfg iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs zstd_decompress zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq raid1 raid0 multipath linear qxl drm_kms_helper hid_generic usbhid syscopyarea sysfillrect sysimgblt hid fb_sys_fops ttm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel drm aesni_intel psmouse glue_helper crypto_simd cryptd [ 102.557268] CPU: 1 PID: 963 Comm: umount Tainted: G W 5.4.171 #1 [ 102.557274] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-1ubuntu1.1 04/01/2014 [ 102.557294] RIP: 0010:read_extent_buffer+0x15e/0x230 [btrfs] [ 102.557297] Code: c0 49 29 df 75 81 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 89 d1 4d 89 f8 48 89 c2 48 c7 c7 40 9c a6 c0 e8 a2 f4 c9 c4 <0f> 0b 48 83 c4 18 4c 89 fa 4c 89 e7 5b 5d 41 5c 41 5d 41 5e 41 5f [ 102.557300] RSP: 0018:ffff88827e997390 EFLAGS: 00010286 [ 102.557302] RAX: 0000000000000000 RBX: ffff888283faf338 RCX: ffffffff8593c260 [ 102.557303] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888293eaa440 [ 102.557303] RBP: 0000000000001008 R08: ffffed10527d5489 R09: ffffed10527d5489 [ 102.557307] R10: 0000000000001008 R11: ffffed10527d5488 R12: ffff88827e9974c0 [ 102.557308] R13: 0000000000000fe8 R14: ffff888283faf338 R15: 0000000000000008 [ 102.557309] FS: 00007f9ab551a080(0000) GS:ffff888293e80000(0000) knlGS:0000000000000000 [ 102.557310] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 102.557310] CR2: 0000561f4a283068 CR3: 0000000283fa8003 CR4: 0000000000360ee0 [ 102.557313] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 102.557313] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 102.557314] Call Trace: [ 102.557316] ? up+0x17/0xb0 [ 102.557333] btrfs_get_64+0x148/0x170 [btrfs] [ 102.557350] ? btrfs_get_token_64+0x2e0/0x2e0 [btrfs] [ 102.557352] ? irq_work_queue+0x9/0x20 [ 102.557353] ? wake_up_klogd+0x42/0x60 [ 102.557354] ? vprintk_emit+0x1f5/0x400 [ 102.557355] ? printk+0x9c/0xc3 [ 102.557357] ? pm_qos_get_value.part.4+0xe/0xe [ 102.557374] ? read_extent_buffer+0x133/0x230 [btrfs] [ 102.557389] btrfs_print_leaf.part.1+0x8f8/0x1060 [btrfs] [ 102.557404] ? btrfs_wait_for_snapshot_creation+0x1d0/0x1d0 [btrfs] [ 102.557405] ? invalid_op+0x1e/0x30 [ 102.557420] __btrfs_free_extent+0x47d/0x1550 [btrfs] [ 102.557421] ? _raw_spin_lock+0x7a/0xd0 [ 102.557435] ? lookup_extent_data_ref+0x640/0x640 [btrfs] [ 102.557437] ? _raw_spin_lock+0x7a/0xd0 [ 102.557438] ? _raw_spin_trylock+0x100/0x100 [ 102.557441] ? _raw_spin_trylock+0x100/0x100 [ 102.557460] ? btrfs_merge_delayed_refs+0x78d/0xaa0 [btrfs] [ 102.557462] ? _raw_spin_lock+0x7a/0xd0 [ 102.557478] __btrfs_run_delayed_refs+0x40b/0x3110 [btrfs] [ 102.557498] ? btrfs_create_pending_block_groups+0x394/0x610 [btrfs] [ 102.557514] ? btrfs_pin_extent+0x60/0x60 [btrfs] [ 102.557529] ? update_ref_for_cow+0xc70/0xc70 [btrfs] [ 102.557549] ? btrfs_read_block_groups+0x1670/0x1670 [btrfs] [ 102.557553] ? radix_tree_gang_lookup_tag+0x143/0x230 [ 102.557556] ? mutex_lock+0x8e/0xe0 [ 102.557559] ? __mutex_lock_slowpath+0x10/0x10 [ 102.557562] ? _raw_spin_trylock+0x100/0x100 [ 102.557584] btrfs_run_delayed_refs+0x114/0x3b0 [btrfs] [ 102.557608] commit_cowonly_roots+0x193/0x9b0 [btrfs] [ 102.557644] ? btrfs_qgroup_account_extents+0x2ab/0x6d0 [btrfs] [ 102.557671] ? switch_commit_roots+0x560/0x560 [btrfs] [ 102.557691] ? btrfs_run_delayed_refs+0x140/0x3b0 [btrfs] [ 102.557716] btrfs_commit_transaction+0xbb2/0x2500 [btrfs] [ 102.557757] ? btrfs_apply_pending_changes+0xd0/0xd0 [btrfs] [ 102.557785] close_ctree+0x556/0x740 [btrfs] [ 102.557790] ? __fsnotify_vfsmount_delete+0x20/0x20 [ 102.557810] ? transaction_kthread+0x380/0x380 [btrfs] [ 102.557814] ? dispose_list+0x180/0x180 [ 102.557831] ? btrfs_attach_transaction_barrier+0x59/0x70 [btrfs] [ 102.557846] ? btrfs_sync_fs+0x91/0x290 [btrfs] [ 102.557850] generic_shutdown_super+0x12e/0x350 [ 102.557852] kill_anon_super+0x36/0x60 [ 102.557868] btrfs_kill_super+0x3b/0x2b0 [btrfs] [ 102.557871] deactivate_locked_super+0x8d/0xd0 [ 102.557874] deactivate_super+0x130/0x160 [ 102.557878] ? freeze_super+0x3f0/0x3f0 [ 102.557881] ? dput+0x1d4/0x760 [ 102.557885] cleanup_mnt+0x1ee/0x3d0 [ 102.557889] task_work_run+0x11e/0x180 [ 102.557895] exit_to_usermode_loop+0x128/0x150 [ 102.557898] do_syscall_64+0x30f/0x390 [ 102.557902] ? prepare_exit_to_usermode+0xec/0x1a0 [ 102.557909] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 102.557912] RIP: 0033:0x7f9ab4dda657 [ 102.557915] Code: 98 2c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 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 01 f0 ff ff 73 01 c3 48 8b 0d 01 98 2c 00 f7 d8 64 89 01 48 [ 102.557916] RSP: 002b:00007ffeff97ff38 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 [ 102.557919] RAX: 0000000000000000 RBX: 0000561f4a27b420 RCX: 00007f9ab4dda657 [ 102.557922] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000561f4a283450 [ 102.557924] RBP: 0000000000000000 R08: 0000561f4a283580 R09: 0000000000000005 [ 102.557926] R10: 000000000000000b R11: 0000000000000246 R12: 0000561f4a283450 [ 102.557930] R13: 00007f9ab52fc8a4 R14: 0000561f4a27b600 R15: 0000000000000000 [ 102.557934] ---[ end trace a2000179777c6774 ]--- [ 102.557937] dev extent chunk_tree 0 chunk objectid 256 chunk offset 1 length 0 [ 102.557941] item 1 key (20971520 192 8388608) itemoff 3947 itemsize 24 [ 102.557943] block group used 4096 chunk_objectid 256 flags 34 [ 102.557944] item 2 key (20975616 169 0) itemoff 3914 itemsize 33 [ 102.557945] extent refs 1 gen 5 flags 2 [ 102.557946] ref#0: tree block backref root 3 [ 102.557947] item 3 key (29360128 169 0) itemoff 3881 itemsize 33 [ 102.557947] extent refs 1 gen 9 flags 2 [ 102.557948] ref#0: tree block backref root 1 [ 102.557949] item 4 key (29360128 192 33554432) itemoff 3857 itemsize 24 [ 102.557950] block group used 28672 chunk_objectid 256 flags 36 [ 102.557951] item 5 key (29364224 169 0) itemoff 3824 itemsize 33 [ 102.557951] extent refs 1 gen 6 flags 2 [ 102.557951] ref#0: tree block backref root 9 [ 102.557952] item 6 key (29368320 169 0) itemoff 3791 itemsize 33 [ 102.557953] extent refs 1 gen 9 flags 2 [ 102.557953] ref#0: tree block backref root 2 [ 102.557954] item 7 key (29376512 169 0) itemoff 3758 itemsize 33 [ 102.557955] extent refs 1 gen 4 flags 2 [ 102.557955] ref#0: tree block backref root 7 [ 102.557956] item 8 key (29380608 169 0) itemoff 3725 itemsize 33 [ 102.557957] extent refs 1 gen 4 flags 2 [ 102.557957] ref#0: tree block backref root 18446744073709551607 [ 102.557958] item 9 key (29396992 169 0) itemoff 3692 itemsize 33 [ 102.557959] extent refs 1 gen 6 flags 2 [ 102.557959] ref#0: tree block backref root 4 [ 102.557960] item 10 key (29409280 169 0) itemoff 3659 itemsize 33 [ 102.557961] extent refs 1 gen 7 flags 2 [ 102.557961] ref#0: tree block backref root 5 [ 102.557962] item 11 key (29417472 169 0) itemoff 3626 itemsize 33 [ 102.557963] extent refs 1 gen 8 flags 2 [ 102.557963] ref#0: tree block backref root 562949953421313 [ 102.557964] item 12 key (29421568 169 0) itemoff 3593 itemsize 33 [ 102.557965] extent refs 1 gen 8 flags 2 [ 102.557965] ref#0: tree block backref root 2 [ 102.557968] BTRFS error (device loop0): unable to find ref byte nr 29417472 parent 0 root 1 owner 0 offset 0 [ 102.558027] ------------[ cut here ]------------ [ 102.558027] BTRFS: Transaction aborted (error -2) [ 102.558058] WARNING: CPU: 1 PID: 963 at fs/btrfs/extent-tree.c:3107 __btrfs_free_extent+0x4f3/0x1550 [btrfs] [ 102.558059] Modules linked in: joydev input_leds serio_raw qemu_fw_cfg iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs zstd_decompress zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq raid1 raid0 multipath linear qxl drm_kms_helper hid_generic usbhid syscopyarea sysfillrect sysimgblt hid fb_sys_fops ttm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel drm aesni_intel psmouse glue_helper crypto_simd cryptd [ 102.558102] CPU: 1 PID: 963 Comm: umount Tainted: G W 5.4.171 #1 [ 102.558104] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.13.0-1ubuntu1.1 04/01/2014 [ 102.558119] RIP: 0010:__btrfs_free_extent+0x4f3/0x1550 [btrfs] [ 102.558123] Code: 50 48 8d bb 38 ce 00 00 e8 ea ac 37 c5 f0 48 0f ba ab 38 ce 00 00 02 72 13 be fe ff ff ff 48 c7 c7 60 e5 a5 c0 e8 6d a2 d5 c4 <0f> 0b 48 8b 7c 24 08 b9 fe ff ff ff ba 23 0c 00 00 48 c7 c6 00 f2 [ 102.558126] RSP: 0018:ffff88827e997658 EFLAGS: 00010286 [ 102.558130] RAX: 0000000000000000 RBX: ffff88827f7f0000 RCX: ffffffff8593c260 [ 102.558132] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888293eaa440 [ 102.558134] RBP: 0000000000000000 R08: ffffed10527d5489 R09: ffffed10527d5489 [ 102.558136] R10: 0000000000000001 R11: ffffed10527d5488 R12: ffff888283341790 [ 102.558139] R13: 00000000fffffffe R14: 0000000000000000 R15: 0000000000000000 [ 102.558142] FS: 00007f9ab551a080(0000) GS:ffff888293e80000(0000) knlGS:0000000000000000 [ 102.558144] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 102.558147] CR2: 0000561f4a283068 CR3: 0000000283fa8003 CR4: 0000000000360ee0 [ 102.558150] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 102.558152] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 102.558154] Call Trace: [ 102.558158] ? _raw_spin_lock+0x7a/0xd0 [ 102.558173] ? lookup_extent_data_ref+0x640/0x640 [btrfs] [ 102.558176] ? _raw_spin_lock+0x7a/0xd0 [ 102.558178] ? _raw_spin_trylock+0x100/0x100 [ 102.558180] ? _raw_spin_trylock+0x100/0x100 [ 102.558199] ? btrfs_merge_delayed_refs+0x78d/0xaa0 [btrfs] [ 102.558202] ? _raw_spin_lock+0x7a/0xd0 [ 102.558217] __btrfs_run_delayed_refs+0x40b/0x3110 [btrfs] [ 102.558234] ? btrfs_create_pending_block_groups+0x394/0x610 [btrfs] [ 102.558248] ? btrfs_pin_extent+0x60/0x60 [btrfs] [ 102.558261] ? update_ref_for_cow+0xc70/0xc70 [btrfs] [ 102.558277] ? btrfs_read_block_groups+0x1670/0x1670 [btrfs] [ 102.558278] ? radix_tree_gang_lookup_tag+0x143/0x230 [ 102.558279] ? mutex_lock+0x8e/0xe0 [ 102.558281] ? __mutex_lock_slowpath+0x10/0x10 [ 102.558282] ? _raw_spin_trylock+0x100/0x100 [ 102.558296] btrfs_run_delayed_refs+0x114/0x3b0 [btrfs] [ 102.558310] commit_cowonly_roots+0x193/0x9b0 [btrfs] [ 102.558329] ? btrfs_qgroup_account_extents+0x2ab/0x6d0 [btrfs] [ 102.558346] ? switch_commit_roots+0x560/0x560 [btrfs] [ 102.558361] ? btrfs_run_delayed_refs+0x140/0x3b0 [btrfs] [ 102.558377] btrfs_commit_transaction+0xbb2/0x2500 [btrfs] [ 102.558393] ? btrfs_apply_pending_changes+0xd0/0xd0 [btrfs] [ 102.558409] close_ctree+0x556/0x740 [btrfs] [ 102.558412] ? __fsnotify_vfsmount_delete+0x20/0x20 [ 102.558428] ? transaction_kthread+0x380/0x380 [btrfs] [ 102.558431] ? dispose_list+0x180/0x180 [ 102.558447] ? btrfs_attach_transaction_barrier+0x59/0x70 [btrfs] [ 102.558460] ? btrfs_sync_fs+0x91/0x290 [btrfs] [ 102.558463] generic_shutdown_super+0x12e/0x350 [ 102.558465] kill_anon_super+0x36/0x60 [ 102.558478] btrfs_kill_super+0x3b/0x2b0 [btrfs] [ 102.558479] deactivate_locked_super+0x8d/0xd0 [ 102.558481] deactivate_super+0x130/0x160 [ 102.558482] ? freeze_super+0x3f0/0x3f0 [ 102.558483] ? dput+0x1d4/0x760 [ 102.558484] cleanup_mnt+0x1ee/0x3d0 [ 102.558487] task_work_run+0x11e/0x180 [ 102.558490] exit_to_usermode_loop+0x128/0x150 [ 102.558493] do_syscall_64+0x30f/0x390 [ 102.558496] ? prepare_exit_to_usermode+0xec/0x1a0 [ 102.558499] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 102.558502] RIP: 0033:0x7f9ab4dda657 [ 102.558504] Code: 98 2c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 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 01 f0 ff ff 73 01 c3 48 8b 0d 01 98 2c 00 f7 d8 64 89 01 48 [ 102.558505] RSP: 002b:00007ffeff97ff38 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 [ 102.558506] RAX: 0000000000000000 RBX: 0000561f4a27b420 RCX: 00007f9ab4dda657 [ 102.558507] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000561f4a283450 [ 102.558507] RBP: 0000000000000000 R08: 0000561f4a283580 R09: 0000000000000005 [ 102.558508] R10: 000000000000000b R11: 0000000000000246 R12: 0000561f4a283450 [ 102.558512] R13: 00007f9ab52fc8a4 R14: 0000561f4a27b600 R15: 0000000000000000 [ 102.558513] ---[ end trace a2000179777c6775 ]--- [ 102.558516] BTRFS: error (device loop0) in __btrfs_free_extent:3107: errno=-2 No such entry [ 102.558600] BTRFS info (device loop0): forced readonly [ 102.558612] BTRFS: error (device loop0) in btrfs_run_delayed_refs:2213: errno=-2 No such entry [ 102.558676] BTRFS warning (device loop0): Skipping commit of aborted transaction. [ 102.558677] BTRFS: error (device loop0) in cleanup_transaction:1826: errno=-2 No such entry [ 102.559127] BTRFS error (device loop0): commit super ret -2