syzbot


WARNING in io_ring_exit_work

Status: upstream: reported on 2025/06/18 00:00
Reported-by: syzbot+19827bd6deb9b24f655f@syzkaller.appspotmail.com
First crash: 358d, last: 2h46m
Similar bugs (8)
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 411d 539d 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 1065d 1156d 0/3 auto-obsoleted due to no activity on 2023/10/19 11:52
android-6-12 WARNING in io_ring_exit_work -1 1 53d 53d 0/1 premoderation: reported on 2026/04/18 06:50
upstream WARNING in io_ring_exit_work (2) prio:high io-uring -1 6777 1d06h 839d 0/29 upstream: reported on 2024/02/22 09:35
linux-6.1 WARNING in io_ring_exit_work (3) -1 61 75d 335d 0/3 auto-obsoleted due to no activity on 2026/06/05 18:24
linux-5.15 WARNING in io_ring_exit_work (2) -1 7 49d 53d 0/3 upstream: reported on 2026/04/18 11:03
linux-5.15 WARNING in io_ring_exit_work -1 9 1057d 1165d 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 1138d 1913d 0/29 auto-obsoleted due to no activity on 2023/07/28 02:36

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 42 at io_uring/io_uring.c:3214 io_ring_exit_work+0x3a7/0x820 io_uring/io_uring.c:3214
Modules linked in:
CPU: 0 PID: 42 Comm: kworker/u4:2 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
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 7c 5f 07 f7 48 8b 7c 24 30 48 8b 74 24 08 e8 bd fa 10 00 48 85 c0 75 1d e8 63 5f 07 f7 e9 b9 fd ff ff e8 59 5f 07 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:ffffc90000b37a40 EFLAGS: 00010293
RAX: ffffffff8a7fcc37 RBX: ffff88805dd42000 RCX: ffff8880192b1e00
RDX: 0000000000000000 RSI: fffffffffffffffd RDI: 0000000000000000
RBP: ffffc90000b37bb0 R08: ffffc90000b379c7 R09: 1ffff92000166f38
R10: dffffc0000000000 R11: fffff52000166f39 R12: dffffc0000000000
R13: ffff88805dd42288 R14: 0000000100018760 R15: 0000000100018763
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4d30de1ff8 CR3: 000000002bd8a000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 process_one_work kernel/workqueue.c:2653 [inline]
 process_scheduled_works+0xa5d/0x15d0 kernel/workqueue.c:2730
 worker_thread+0xa55/0xfc0 kernel/workqueue.c:2811
 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 (424):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/06/10 22:51 linux-6.6.y 924b4a879cbb f79bac11 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/10 20:10 linux-6.6.y 924b4a879cbb f79bac11 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/10 18:27 linux-6.6.y 924b4a879cbb f79bac11 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/10 15:07 linux-6.6.y 924b4a879cbb f79bac11 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/10 14:49 linux-6.6.y 924b4a879cbb f79bac11 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/10 10:07 linux-6.6.y 924b4a879cbb 34dab4be .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/10 06:52 linux-6.6.y 924b4a879cbb 34dab4be .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/09 21:52 linux-6.6.y 924b4a879cbb c36c07f6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/09 20:11 linux-6.6.y 924b4a879cbb c36c07f6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/09 17:33 linux-6.6.y 924b4a879cbb c36c07f6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/09 05:42 linux-6.6.y 924b4a879cbb 656e94c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/08 21:45 linux-6.6.y 924b4a879cbb 656e94c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/08 17:58 linux-6.6.y 924b4a879cbb 656e94c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/08 14:02 linux-6.6.y 924b4a879cbb cc095639 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/08 11:50 linux-6.6.y 924b4a879cbb cc095639 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/08 09:04 linux-6.6.y 924b4a879cbb cc095639 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/08 06:03 linux-6.6.y 924b4a879cbb cc095639 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/07 22:57 linux-6.6.y 924b4a879cbb cc095639 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/06 10:49 linux-6.6.y 924b4a879cbb cc095639 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/06 07:02 linux-6.6.y 924b4a879cbb cc095639 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/06 04:32 linux-6.6.y 924b4a879cbb cc095639 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/06 02:16 linux-6.6.y 924b4a879cbb cc095639 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/05 09:58 linux-6.6.y 924b4a879cbb 197909be .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/05 00:26 linux-6.6.y 924b4a879cbb 197909be .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/04 03:27 linux-6.6.y 924b4a879cbb 197909be .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/03 19:55 linux-6.6.y 924b4a879cbb 234057e5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/03 14:37 linux-6.6.y 924b4a879cbb 234057e5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/03 09:25 linux-6.6.y 924b4a879cbb 3c0d2131 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/03 06:34 linux-6.6.y 924b4a879cbb 3c0d2131 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/03 01:46 linux-6.6.y 924b4a879cbb 3c0d2131 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/02 06:26 linux-6.6.y 924b4a879cbb 1095583b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/02 03:33 linux-6.6.y 924b4a879cbb 1095583b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/02 00:56 linux-6.6.y 924b4a879cbb 1095583b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/01 23:43 linux-6.6.y 924b4a879cbb 1095583b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/01 15:06 linux-6.6.y 0a40c6fbd105 8d8eeb3a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/01 04:23 linux-6.6.y 0a40c6fbd105 6b4a8443 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/01 02:23 linux-6.6.y 0a40c6fbd105 6b4a8443 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/06/01 00:06 linux-6.6.y 0a40c6fbd105 6b4a8443 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/05/31 21:52 linux-6.6.y 0a40c6fbd105 6b4a8443 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/05/31 20:55 linux-6.6.y 0a40c6fbd105 6b4a8443 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/05/31 17:20 linux-6.6.y 0a40c6fbd105 6b4a8443 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/05/31 14:42 linux-6.6.y 0a40c6fbd105 6b4a8443 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/05/31 09:45 linux-6.6.y 0a40c6fbd105 6b4a8443 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/05/31 06:05 linux-6.6.y 0a40c6fbd105 6b4a8443 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/05/31 02:19 linux-6.6.y 0a40c6fbd105 6b4a8443 .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.