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WARNING in io_ring_exit_work

Status: upstream: reported on 2025/06/18 00:00
Reported-by: syzbot+19827bd6deb9b24f655f@syzkaller.appspotmail.com
First crash: 258d, last: 3h39m
▶ ▼ Similar bugs (6)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in io_ring_exit_work (2) -1 27 312d 440d 0/3 auto-obsoleted due to no activity on 2025/07/04 09:19
linux-6.1 WARNING in io_ring_exit_work -1 5 966d 1057d 0/3 auto-obsoleted due to no activity on 2023/10/19 11:52
upstream WARNING in io_ring_exit_work (2) io-uring -1 5973 6h19m 740d 0/29 upstream: reported on 2024/02/22 09:35
linux-6.1 WARNING in io_ring_exit_work (3) -1 30 7d04h 236d 0/3 upstream: reported on 2025/07/10 06:43
linux-5.15 WARNING in io_ring_exit_work -1 9 958d 1066d 0/3 auto-obsoleted due to no activity on 2023/10/27 08:42
upstream WARNING in io_ring_exit_work io-uring -1 C done done 3550 1039d 1814d 0/29 auto-obsoleted due to no activity on 2023/07/28 02:36

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 3468 at io_uring/io_uring.c:3214 io_ring_exit_work+0x3a7/0x820 io_uring/io_uring.c:3214
Modules linked in:
CPU: 1 PID: 3468 Comm: kworker/u4:11 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Workqueue: iou_exit io_ring_exit_work
RIP: 0010:io_ring_exit_work+0x3a7/0x820 io_uring/io_uring.c:3214
Code: 78 23 e8 ac 2a 0b f7 48 8b 7c 24 30 48 8b 74 24 08 e8 ed ec 10 00 48 85 c0 75 1d e8 93 2a 0b f7 e9 b9 fd ff ff e8 89 2a 0b f7 <0f> 0b b8 70 17 00 00 48 89 44 24 08 eb cf c7 84 24 90 00 00 00 00
RSP: 0018:ffffc9000d077a40 EFLAGS: 00010293
RAX: ffffffff8a7bea87 RBX: ffff88805ef5c000 RCX: ffff88802e88da00
RDX: 0000000000000000 RSI: fffffffffffffffc RDI: 0000000000000000
RBP: ffffc9000d077bb0 R08: ffffc9000d0779c7 R09: 1ffff92001a0ef38
R10: dffffc0000000000 R11: fffff52001a0ef39 R12: dffffc0000000000
R13: ffff88805ef5c288 R14: 0000000100006b71 R15: 0000000100006b75
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f89f756d5ea CR3: 000000007b14e000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 process_one_work kernel/workqueue.c:2634 [inline]
 process_scheduled_works+0xa5d/0x15d0 kernel/workqueue.c:2711
 worker_thread+0xa55/0xfc0 kernel/workqueue.c:2792
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>

Crashes (253):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/03/03 17:42 linux-6.6.y 7a137e9bfa0e 4180d919 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/03/03 04:42 linux-6.6.y 7a137e9bfa0e 28b83e23 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/03/02 17:06 linux-6.6.y 7a137e9bfa0e b9dd6534 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/28 06:57 linux-6.6.y 7a137e9bfa0e 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/27 19:00 linux-6.6.y 7a137e9bfa0e 2cf092b8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/27 03:34 linux-6.6.y 7a137e9bfa0e a2f13f71 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/26 15:19 linux-6.6.y 7a137e9bfa0e ffa54287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/26 03:49 linux-6.6.y 7a137e9bfa0e e0f78d93 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/25 15:09 linux-6.6.y 7a137e9bfa0e 94a9671e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/25 02:26 linux-6.6.y 7a137e9bfa0e 787dfb7c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/24 15:03 linux-6.6.y 7a137e9bfa0e 96b1aa46 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/24 02:37 linux-6.6.y 7a137e9bfa0e 41d2fa6a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/23 14:32 linux-6.6.y 7a137e9bfa0e 6beca497 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/20 22:20 linux-6.6.y 7a137e9bfa0e 6e7b5511 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/20 10:15 linux-6.6.y 7a137e9bfa0e 17d780d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/19 21:44 linux-6.6.y 7a137e9bfa0e c8d8c52d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/19 07:17 linux-6.6.y 56865d9b7074 746545b8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/18 07:18 linux-6.6.y 56865d9b7074 39751c21 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/17 19:27 linux-6.6.y 56865d9b7074 06ec4f7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/17 08:40 linux-6.6.y 56865d9b7074 e439b951 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/16 21:34 linux-6.6.y ae462074fde3 5d52cba5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/13 20:49 linux-6.6.y 1b4ef5214f17 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/13 08:20 linux-6.6.y 1b4ef5214f17 6a673c50 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/13 06:01 linux-6.6.y 1b4ef5214f17 6a673c50 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/12 21:41 linux-6.6.y 1b4ef5214f17 504cb1bf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/12 17:51 linux-6.6.y 1b4ef5214f17 504cb1bf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/12 11:53 linux-6.6.y 1b4ef5214f17 76a109e2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/12 05:49 linux-6.6.y 1b4ef5214f17 76a109e2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/11 16:05 linux-6.6.y 1b4ef5214f17 75707236 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/11 05:58 linux-6.6.y c56aaf1a85ae 441e25b7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/10 15:35 linux-6.6.y c56aaf1a85ae 91d776d3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/10 02:57 linux-6.6.y c56aaf1a85ae 4ab09a02 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/10 00:14 linux-6.6.y c56aaf1a85ae 4ab09a02 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/09 14:51 linux-6.6.y c56aaf1a85ae df949cd9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/09 12:29 linux-6.6.y c56aaf1a85ae df949cd9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/07 22:54 linux-6.6.y c56aaf1a85ae 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/07 19:49 linux-6.6.y c56aaf1a85ae 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/07 05:37 linux-6.6.y c56aaf1a85ae f20fc9f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/07 02:06 linux-6.6.y c56aaf1a85ae f20fc9f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/06 23:02 linux-6.6.y c56aaf1a85ae 97745f52 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/06 21:05 linux-6.6.y c56aaf1a85ae 97745f52 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/06 01:52 linux-6.6.y 2cf6f68313dc f03c4191 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/02/05 23:56 linux-6.6.y 2cf6f68313dc f03c4191 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2025/06/17 23:08 linux-6.6.y c2603c511feb e77fae15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
* Struck through repros no longer work on HEAD.