syzbot

 sign-in | mailing list | source | docs
🐞 Open [462]
🐞 Fixed [21]
🐞 Invalid [173]
⬇ Missing Backports [18]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
💬 Send us feedback

WARNING in io_ring_exit_work

Status: upstream: reported on 2025/06/18 00:00
Reported-by: syzbot+19827bd6deb9b24f655f@syzkaller.appspotmail.com
First crash: 279d, last: 17h16m
▶ ▼ 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 333d 460d 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 986d 1077d 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 6487 3h28m 761d 0/29 upstream: reported on 2024/02/22 09:35
linux-6.1 WARNING in io_ring_exit_work (3) -1 55 7h11m 257d 0/3 upstream: reported on 2025/07/10 06:43
linux-5.15 WARNING in io_ring_exit_work -1 9 979d 1086d 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 1060d 1834d 0/29 auto-obsoleted due to no activity on 2023/07/28 02:36

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 3462 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: 3462 Comm: kworker/u4:8 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 fc 91 0a f7 48 8b 7c 24 30 48 8b 74 24 08 e8 ad f4 10 00 48 85 c0 75 1d e8 e3 91 0a f7 e9 b9 fd ff ff e8 d9 91 0a 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:ffffc9000cd17a40 EFLAGS: 00010293
RAX: ffffffff8a7c8a87 RBX: ffff8880267e0000 RCX: ffff88802dfd9e00
RDX: 0000000000000000 RSI: fffffffffffffffd RDI: 0000000000000000
RBP: ffffc9000cd17bb0 R08: ffffc9000cd179c7 R09: 1ffff920019a2f38
R10: dffffc0000000000 R11: fffff520019a2f39 R12: dffffc0000000000
R13: ffff8880267e0288 R14: 000000010000c091 R15: 000000010000c094
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f02a465c010 CR3: 000000007a54a000 CR4: 00000000003506e0
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 (290):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/03/23 17:59 linux-6.6.y 4fc00fe35d46 4933dba2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/03/23 16:46 linux-6.6.y 4fc00fe35d46 4933dba2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/03/20 19:16 linux-6.6.y 4fc00fe35d46 ac6f1dff .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/03/20 07:19 linux-6.6.y 4fc00fe35d46 2f245add .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/03/19 15:45 linux-6.6.y 4fc00fe35d46 bd6dcb30 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/03/18 15:43 linux-6.6.y 4fc00fe35d46 0199f9a1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/03/17 13:01 linux-6.6.y 4fc00fe35d46 c01bca74 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/03/17 03:19 linux-6.6.y 4fc00fe35d46 0737c18f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/03/17 00:22 linux-6.6.y 4fc00fe35d46 0737c18f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/03/12 14:56 linux-6.6.y 4fc00fe35d46 4efadf07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/03/11 21:37 linux-6.6.y 4fc00fe35d46 2d88ab01 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/03/11 06:36 linux-6.6.y 4fc00fe35d46 86914af9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/03/10 18:06 linux-6.6.y 4fc00fe35d46 4683d576 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/03/10 05:48 linux-6.6.y 4fc00fe35d46 6972f302 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/03/09 18:12 linux-6.6.y 4fc00fe35d46 176bead5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/03/06 15:42 linux-6.6.y 4fc00fe35d46 41d8037d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/03/06 03:36 linux-6.6.y 4fc00fe35d46 31e9c887 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/03/06 03:36 linux-6.6.y 4fc00fe35d46 31e9c887 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/03/05 19:49 linux-6.6.y 4fc00fe35d46 d20b04c8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/03/05 03:42 linux-6.6.y 682d8e2f892b a9fe5c9e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
2026/03/04 19:15 linux-6.6.y 682d8e2f892b e6b6b96b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in io_ring_exit_work
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
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.