syzbot

 sign-in | mailing list | source | docs
🐞 Open [867]
🐞 Fixed [141]
🐞 Invalid [1001]
⬇ Missing Backports [73]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
💬 Send us feedback

WARNING in io_ring_exit_work (3)

Status: upstream: reported on 2025/07/10 06:43
Reported-by: syzbot+b3c7334d848a6f979704@syzkaller.appspotmail.com
First crash: 204d, last: 2h04m
▶ ▼ 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 280d 408d 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 934d 1025d 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 5165 1h11m 708d 0/29 upstream: reported on 2024/02/22 09:35
linux-6.6 WARNING in io_ring_exit_work -1 130 1h12m 227d 0/2 upstream: reported on 2025/06/18 00:00
linux-5.15 WARNING in io_ring_exit_work -1 9 926d 1034d 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 1008d 1782d 0/29 auto-obsoleted due to no activity on 2023/07/28 02:36

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 9 at io_uring/io_uring.c:2890 io_ring_exit_work+0x341/0x74e io_uring/io_uring.c:2890
Modules linked in:
CPU: 1 PID: 9 Comm: kworker/u4:0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: events_unbound io_ring_exit_work
RIP: 0010:io_ring_exit_work+0x341/0x74e io_uring/io_uring.c:2890
Code: 5e f7 48 8b 7c 24 38 48 8b 74 24 18 e8 c0 2c 11 00 48 85 c0 4c 8b 7c 24 10 75 3f e8 91 85 5e f7 e9 09 fe ff ff e8 87 85 5e f7 <0f> 0b b8 70 17 00 00 48 89 44 24 18 eb ca 48 8b 4c 24 08 80 e1 07
RSP: 0000:ffffc900000e7ac0 EFLAGS: 00010293
RAX: ffffffff8a23ece9 RBX: 000000010000d687 RCX: ffff88813fe90000
RDX: 0000000000000000 RSI: ffffffffffffffde RDI: 0000000000000000
RBP: ffffc900000e7c30 R08: ffffc900000e7a47 R09: 1ffff9200001cf48
R10: dffffc0000000000 R11: fffff5200001cf49 R12: dffffc0000000000
R13: 1ffff1100fc7be4c R14: ffff88807e3df260 R15: 000000010000d6a9
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe5b31e4a90 CR3: 000000005df85000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 process_one_work+0x8a2/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaa2/0x1270 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>

Crashes (22):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/01/31 03:37 linux-6.1.y cd9b81672742 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/01/28 14:55 linux-6.1.y cd9b81672742 004c195c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/01/26 14:45 linux-6.1.y cd9b81672742 a4c52dd6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/01/20 16:03 linux-6.1.y cd9b81672742 06648d9c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2025/12/07 06:32 linux-6.1.y 50cbba13faa2 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2025/11/20 15:15 linux-6.1.y f6e38ae624cf 2cc4c24a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2025/10/20 18:36 linux-6.1.y 8e6e2188d949 d422939c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2025/10/19 20:39 linux-6.1.y 8e6e2188d949 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2025/10/17 16:58 linux-6.1.y c2fda4b3f577 7adf5298 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2025/10/16 00:38 linux-6.1.y c2fda4b3f577 19568248 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2025/10/02 21:27 linux-6.1.y 882efbdd9d34 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2025/09/29 18:49 linux-6.1.y 7b34dc04e4ff 86341da6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2025/09/24 09:45 linux-6.1.y 363a599da6d9 0abd0691 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2025/09/10 05:46 linux-6.1.y f97f1002271b fdeaa69b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2025/09/02 18:23 linux-6.1.y f89b6e15694c 96a211bc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2025/09/01 06:13 linux-6.1.y f89b6e15694c 807a3b61 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2025/08/23 07:48 linux-6.1.y 0bc96de781b4 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2025/08/23 03:00 linux-6.1.y 0bc96de781b4 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2025/08/21 06:42 linux-6.1.y 0bc96de781b4 0b9605c8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2025/08/21 06:42 linux-6.1.y 0bc96de781b4 0b9605c8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2025/07/10 06:42 linux-6.1.y 04d1ccaa9c28 956bd956 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/01/31 03:49 linux-6.1.y cd9b81672742 c75a2f6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in io_ring_exit_work
* Struck through repros no longer work on HEAD.