WARNING in btrfs_finish_ordered_io

Status: auto-obsoleted due to no activity on 2025/09/22 12:50
Subsystems: btrfs
[Documentation on labels]
Reported-by: syzbot+b3a2926f65a93a3cf55b@syzkaller.appspotmail.com
First crash: 1337d, last: 896d
Cause bisection: failed (error log, bisect log)
  
Fix bisection: the issue occurs on the latest tested release (bisect log)
  
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [btrfs?] WARNING in btrfs_finish_ordered_io 0 (1) 2022/12/29 11:49
▶ ▼ Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 WARNING in btrfs_finish_ordered_io origin:upstream -1 syz error 2 480d 480d 0/3 auto-obsoleted due to no activity on 2025/08/08 18:01
linux-6.1 WARNING in btrfs_finish_ordered_io -1 1 1219d 1219d 0/3 auto-obsoleted due to no activity on 2023/08/20 13:44
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2025/09/22 12:20 29m retest repro upstream no crash log
2025/09/19 20:05 20m retest repro upstream no crash log
2025/08/08 04:57 21m retest repro upstream no crash log
2025/08/05 17:05 19m retest repro upstream no crash log
2025/08/05 11:58 2h05m retest repro linux-next no crash log
2025/07/14 08:24 1h24m retest repro upstream report log
2025/06/24 03:39 14m retest repro upstream report log
2025/05/29 22:37 21m retest repro upstream report log
2025/05/27 11:31 16m retest repro linux-next report log
2025/05/27 01:33 13m retest repro upstream report log
▶ ▼ Fix bisection attempts (11)
Created Duration User Patch Repo Result
2024/04/12 01:54 5h17m bisect fix upstream OK (0) job log
2024/03/10 13:59 1h25m bisect fix upstream OK (0) job log log
2024/02/02 05:57 1h37m bisect fix upstream OK (0) job log log
2023/12/30 04:39 1h55m bisect fix upstream OK (0) job log log
2023/11/30 03:04 1h32m bisect fix upstream OK (0) job log log
2023/10/29 10:35 1h56m bisect fix upstream OK (0) job log log
2023/09/28 03:26 1h50m bisect fix upstream OK (0) job log log
2023/07/24 14:53 3h08m bisect fix upstream OK (0) job log log
2023/05/30 01:16 45m bisect fix upstream OK (0) job log log
2023/04/02 22:19 41m bisect fix upstream OK (0) job log log
2023/02/02 23:17 52m bisect fix upstream OK (0) job log log

Sample crash report:
------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: CPU: 1 PID: 12 at fs/btrfs/inode.c:3188 btrfs_finish_ordered_io+0x1aa0/0x1dd0 fs/btrfs/inode.c:3188
Modules linked in:
CPU: 1 PID: 12 Comm: kworker/u4:1 Not tainted 6.4.0-rc6-syzkaller-00269-g1b29d271614a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Workqueue: btrfs-endio-write btrfs_work_helper
RIP: 0010:btrfs_finish_ordered_io+0x1aa0/0x1dd0 fs/btrfs/inode.c:3188
Code: 48 c7 c7 60 2f 2a 8b 44 89 fe e8 bb 72 c9 fd 0f 0b e9 f2 fe ff ff e8 9f f3 01 fe 48 c7 c7 60 2f 2a 8b 44 89 fe e8 a0 72 c9 fd <0f> 0b e9 16 ff ff ff e8 84 f3 01 fe 48 c7 c7 60 2f 2a 8b 44 89 fe
RSP: 0018:ffffc90000117a00 EFLAGS: 00010246
RAX: b091832ec0083800 RBX: ffff888075eb1370 RCX: ffff888014a5d940
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000117bd8 R08: ffffffff81530142 R09: fffffbfff2065667
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888076f36000
R13: ffff888075c20150 R14: 0000000000000000 R15: 00000000ffffffe4
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f78a30b10e0 CR3: 000000002c0ee000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_work_helper+0x380/0xbe0 fs/btrfs/async-thread.c:280
 process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
 worker_thread+0xa63/0x1210 kernel/workqueue.c:2552
 kthread+0x2b8/0x350 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>

Crashes (6):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/06/18 08:29 upstream 1b29d271614a f3921d4d .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-smack-root WARNING in btrfs_finish_ordered_io
2023/01/01 15:16 upstream e4cf7c25bae5 ab32d508 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in btrfs_finish_ordered_io
2022/12/31 07:47 upstream bff687b3dad6 ab32d508 .config console log report syz [mounted in repro] ci2-upstream-fs WARNING in btrfs_finish_ordered_io
2022/12/25 11:41 upstream 72a85e2b0a1e 9da18ae8 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in btrfs_finish_ordered_io
2023/04/23 20:22 upstream 622322f53c6d 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in btrfs_finish_ordered_io
2023/03/03 22:19 linux-next 1acf39ef8f14 f8902b57 .config strace log report syz [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root WARNING in btrfs_finish_ordered_io
* Struck through repros no longer work on HEAD.