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WARNING in btrfs_finish_one_ordered

Status: upstream: reported C repro on 2023/07/16 16:58
Subsystems: btrfs
[Documentation on labels]
Reported-by: syzbot+6e54e639e7b934d64304@syzkaller.appspotmail.com
First crash: 832d, last: 15d
Cause bisection: introduced by (bisect log) [merge commit]:
commit 9930f518b6a82ff10a3d13e0cbde05cce04f5930
Author: Dave Airlie <airlied@redhat.com>
Date: Fri Jun 16 20:11:59 2023 +0000

  Merge tag 'drm-misc-fixes-2023-06-16' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

Crash: WARNING in btrfs_commit_transaction (log)
Repro: C syz .config
  
▶ ▼ Discussions (2)
Title Replies (including bot) Last reply
[syzbot] Monthly btrfs report (Apr 2024) 0 (1) 2024/04/12 13:18
[syzbot] [btrfs?] WARNING in btrfs_finish_one_ordered 0 (2) 2023/08/10 18:40
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2025/10/20 17:58 14m retest repro upstream report log
2025/10/06 17:06 14m retest repro upstream report log
2025/10/06 17:06 13m retest repro upstream report log
2025/10/06 16:39 14m retest repro upstream report log
2025/10/04 09:36 14m retest repro upstream report log
2025/08/26 23:42 20m retest repro upstream OK log
2025/07/28 16:20 11m retest repro upstream report log
2025/07/28 16:20 11m retest repro upstream report log
2025/07/28 16:20 11m retest repro upstream report log
2025/07/28 16:20 12m retest repro upstream report log
▶ ▼ Fix bisection attempts (9)
Created Duration User Patch Repo Result
2025/06/17 17:43 1h52m bisect fix upstream OK (0) job log log
2025/05/17 22:10 3h42m bisect fix upstream OK (0) job log log
2025/04/13 21:51 4h01m bisect fix upstream OK (0) job log log
2025/02/10 12:07 1h25m bisect fix upstream OK (0) job log log
2024/08/11 00:36 1h21m bisect fix upstream OK (0) job log log
2024/02/19 13:17 3h26m bisect fix upstream OK (0) job log log
2023/12/31 00:34 1h48m bisect fix upstream OK (0) job log log
2023/11/30 19:35 1h20m bisect fix upstream OK (0) job log log
2023/10/10 04:30 2h48m bisect fix upstream OK (0) job log log

Sample crash report:
------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: CPU: 1 PID: 74 at fs/btrfs/inode.c:3164 btrfs_finish_one_ordered+0x1d1c/0x21e0 fs/btrfs/inode.c:3164
Modules linked in:
CPU: 1 PID: 74 Comm: kworker/u32:4 Not tainted 6.9.0-rc2-syzkaller-00080-gc85af715cac0 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: btrfs-endio-write btrfs_work_helper
RIP: 0010:btrfs_finish_one_ordered+0x1d1c/0x21e0 fs/btrfs/inode.c:3164
Code: 40 d6 76 8b 89 ee e8 c3 87 c1 fd 90 0f 0b 90 90 e9 8f fe ff ff e8 34 1a ff fd 90 48 c7 c7 40 d6 76 8b 89 ee e8 a5 87 c1 fd 90 <0f> 0b 90 90 e9 f3 fe ff ff 48 8b 7c 24 68 e8 91 45 5a fe e9 70 e3
RSP: 0018:ffffc90000fd7a88 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff88801b42c000 RCX: ffffffff814fe169
RDX: ffff88801bc12440 RSI: ffffffff814fe176 RDI: 0000000000000001
RBP: 00000000ffffffe4 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000006 R12: 0000000000000001
R13: ffff8880324d4128 R14: ffff88801b42c040 R15: ffff88802fb383d8
FS:  0000000000000000(0000) GS:ffff88806b100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056141312bc68 CR3: 0000000011bac000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_work_helper+0x225/0xc90 fs/btrfs/async-thread.c:314
 process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3254
 process_scheduled_works kernel/workqueue.c:3335 [inline]
 worker_thread+0x6c8/0xf70 kernel/workqueue.c:3416
 kthread+0x2c1/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
 </TASK>

Crashes (21):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/04 02:43 upstream c85af715cac0 51c4dcff .config console log report syz C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-qemu-upstream WARNING in btrfs_finish_one_ordered
2024/04/02 22:02 upstream b1e6ec0a0fd0 f861ecca .config console log report syz C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-qemu-upstream WARNING in btrfs_finish_one_ordered
2024/04/01 11:01 upstream 39cd87c4eb2b 6baf5069 .config console log report syz C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-qemu-upstream WARNING in btrfs_finish_one_ordered
2024/03/30 16:59 upstream 486291a0e624 6baf5069 .config console log report syz C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-qemu-upstream WARNING in btrfs_finish_one_ordered
2024/03/29 21:48 upstream 4535e1a4174c c52bcb23 .config console log report syz C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-qemu-upstream WARNING in btrfs_finish_one_ordered
2025/03/05 17:03 upstream 48a5eed9ad58 60f5d8d9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in btrfs_finish_one_ordered
2023/10/30 16:06 upstream ffc253263a13 b5729d82 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in btrfs_finish_one_ordered
2023/08/10 18:38 upstream 374a7f47bf40 4df3089c .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-selinux-root WARNING in btrfs_finish_one_ordered
2025/09/20 09:18 upstream 1522b530ac3e 67c37560 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_finish_one_ordered
2025/09/09 12:54 upstream f777d1112ee5 d291dd2d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_finish_one_ordered
2025/03/14 18:40 upstream e3a854b577cb e2826670 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-snapshot-upstream-root WARNING in btrfs_finish_one_ordered
2025/03/02 03:15 upstream 03d38806a902 c3901742 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_finish_one_ordered
2024/12/22 14:47 upstream 48f506ad0b68 b4fbdbd4 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_finish_one_ordered
2024/12/08 14:17 upstream 7503345ac5f5 9ac0fdc6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_finish_one_ordered
2024/11/24 01:01 upstream 228a1157fb9f 68da6d95 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_finish_one_ordered
2024/11/20 17:39 upstream bf9aa14fc523 4fca1650 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_finish_one_ordered
2024/11/13 02:43 upstream 3022e9d00ebe 62026c85 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_finish_one_ordered
2024/10/24 14:35 upstream c2ee9f594da8 c08e46d6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_finish_one_ordered
2024/10/23 10:43 upstream c2ee9f594da8 15fa2979 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_finish_one_ordered
2024/09/11 04:09 upstream 8d8d276ba2fb 8ab55d0e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_finish_one_ordered
2023/07/12 16:55 upstream 3f01e9fed845 979d5fe2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in btrfs_finish_one_ordered
* Struck through repros no longer work on HEAD.