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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: 158d, last: 8d13h
▶ ▼ 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 234d 362d 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 888d 979d 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 4432 1h20m 662d 0/29 upstream: reported on 2024/02/22 09:35
linux-6.6 WARNING in io_ring_exit_work -1 85 21h53m 180d 0/2 upstream: reported on 2025/06/18 00:00
linux-5.15 WARNING in io_ring_exit_work -1 9 880d 988d 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 961d 1736d 0/29 auto-obsoleted due to no activity on 2023/07/28 02:36

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5973 at io_uring/io_uring.c:2890 io_ring_exit_work+0x314/0x704 io_uring/io_uring.c:2890
Modules linked in:
CPU: 1 PID: 5973 Comm: kworker/u4:11 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+0x314/0x704 io_uring/io_uring.c:2890
Code: 78 f7 48 8b 7c 24 38 48 8b 74 24 18 e8 29 05 11 00 48 85 c0 4c 8b 7c 24 10 75 3f e8 fa b8 78 f7 e9 09 fe ff ff e8 f0 b8 78 f7 <0f> 0b b8 70 17 00 00 48 89 44 24 18 eb ca 48 8b 4c 24 08 80 e1 07
RSP: 0018:ffffc900036c7ac0 EFLAGS: 00010293
RAX: ffffffff8a0826e0 RBX: 00000001000128cb RCX: ffff88802f959dc0
RDX: 0000000000000000 RSI: fffffffffffffff0 RDI: 0000000000000000
RBP: ffffc900036c7c30 R08: dffffc0000000000 R09: fffff520006d8f49
R10: fffff520006d8f49 R11: 1ffff920006d8f48 R12: dffffc0000000000
R13: 1ffff11003b4ba4c R14: ffff88801da5d260 R15: 00000001000128db
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff8cb1b9358 CR3: 000000000c68e000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 process_one_work+0x898/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaa2/0x1250 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 (17):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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
* Struck through repros no longer work on HEAD.