WARNING in io_ring_exit_work (2)

Status: premoderation: reported on 2026/08/28 04:27
Reported-by: syzbot+92f793f69734e2f04d03@syzkaller.appspotmail.com
First crash: 1d06h, last: 1d06h
Similar bugs (10)
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 491d 618d 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 1144d 1235d 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 133d 133d 0/1 auto-obsoleted due to no activity on 2026/07/17 06:56
upstream WARNING in io_ring_exit_work (2) prio:high io-uring -1 syz 9665 1h54m 919d 0/29 upstream: reported syz repro on 2024/02/22 09:35
linux-6.6 WARNING in io_ring_exit_work -1 1358 5h37m 437d 0/2 upstream: reported on 2025/06/18 00:00
linux-6.1 WARNING in io_ring_exit_work (3) -1 61 154d 415d 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 129d 132d 0/3 auto-obsoleted due to no activity on 2026/07/31 07:28
linux-5.15 WARNING in io_ring_exit_work -1 9 1137d 1244d 0/3 auto-obsoleted due to no activity on 2023/10/27 08:42
upstream WARNING in io_ring_exit_work io-uring -1 syz, C done done 3550 1218d 1992d 0/29 auto-obsoleted due to no activity on 2023/07/28 02:36
linux-6.1 WARNING in io_ring_exit_work (4) -1 1 37d 37d 0/3 upstream: reported on 2026/07/22 17:40

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 702 at io_uring/io_uring.c:2987 io_ring_exit_work+0x3cb/0x83b io_uring/io_uring.c:2987
Modules linked in:
CPU: 1 UID: 0 PID: 702 Comm: kworker/u8:43 Not tainted syzkaller #0 202cfcd855bf6dc28f2fc6dc994ef8a0c7c58666
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: iou_exit io_ring_exit_work
RIP: 0010:io_ring_exit_work+0x3cb/0x83b io_uring/io_uring.c:2987
Code: 89 f5 48 8b 7c 24 40 48 8b 74 24 20 e8 3e 2b a0 04 48 85 c0 4c 8b 74 24 50 75 1d e8 cf dd 81 00 e9 a5 fd ff ff e8 c5 dd 81 00 <0f> 0b b8 70 17 00 00 48 89 44 24 20 eb c2 c7 84 24 b0 00 00 00 00
RSP: 0018:ffffc9000ef27b40 EFLAGS: 00010293
RAX: ffffffff8105937b RBX: ffff88811fff9000 RCX: ffff888137acdf00
RDX: 0000000000000000 RSI: fffffffffffffffd RDI: 0000000000000000
RBP: ffffc9000ef27c88 R08: ffffc9000ef27a87 R09: 1ffff92001de4f50
R10: dffffc0000000000 R11: fffff52001de4f51 R12: dffffc0000000000
R13: 000000010000110a R14: ffff88811fff9010 R15: 000000010000110d
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563c89e4aff8 CR3: 0000000100ad4000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 process_one_work kernel/workqueue.c:3273 [inline]
 process_scheduled_works+0x7f4/0x1060 kernel/workqueue.c:3354
 worker_thread+0xc99/0x13f0 kernel/workqueue.c:3435
 kthread+0x2c4/0x360 kernel/kthread.c:389
 ret_from_fork+0x64/0xa0 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
---[ end trace 0000000000000000 ]---

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/08/28 04:26 android16-6.12 3ebc81d80f95 69a01293 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust WARNING in io_ring_exit_work
* Struck through repros no longer work on HEAD.