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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: 102d, last: 7h44m
▶ ▼ 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 178d 306d 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 832d 923d 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 2894 2h14m 606d 0/29 upstream: reported on 2024/02/22 09:35
linux-6.6 WARNING in io_ring_exit_work -1 29 1d01h 125d 0/2 upstream: reported on 2025/06/18 00:00
linux-5.15 WARNING in io_ring_exit_work -1 9 824d 932d 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 905d 1680d 0/29 auto-obsoleted due to no activity on 2023/07/28 02:36

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5022 at io_uring/io_uring.c:2890 io_ring_exit_work+0x314/0x704 io_uring/io_uring.c:2890
Modules linked in:
CPU: 0 PID: 5022 Comm: kworker/u4:14 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: events_unbound io_ring_exit_work
RIP: 0010:io_ring_exit_work+0x314/0x704 io_uring/io_uring.c:2890
Code: 71 f7 48 8b 7c 24 38 48 8b 74 24 18 e8 e9 11 11 00 48 85 c0 4c 8b 7c 24 10 75 3f e8 9a 5c 71 f7 e9 09 fe ff ff e8 90 5c 71 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:ffffc9000e57fac0 EFLAGS: 00010293
RAX: ffffffff8a0f7680 RBX: 0000000100009246 RCX: ffff8880193f0000
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000000
RBP: ffffc9000e57fc30 R08: dffffc0000000000 R09: fffff52001caff49
R10: fffff52001caff49 R11: 1ffff92001caff48 R12: dffffc0000000000
R13: 1ffff110047e864c R14: ffff888023f43260 R15: 0000000100009247
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555563f5d5c8 CR3: 00000000685b9000 CR4: 00000000003506f0
DR0: fffffffffffffff1 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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 (15):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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.