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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: 253d, last: 3h38m
▶ ▼ 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 329d 456d 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 982d 1073d 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 6382 6h39m 757d 0/29 upstream: reported on 2024/02/22 09:35
linux-6.6 WARNING in io_ring_exit_work -1 287 2h17m 275d 0/2 upstream: reported on 2025/06/18 00:00
linux-5.15 WARNING in io_ring_exit_work -1 9 975d 1082d 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 1056d 1830d 0/29 auto-obsoleted due to no activity on 2023/07/28 02:36

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 36 at io_uring/io_uring.c:2890 io_ring_exit_work+0x336/0x763 io_uring/io_uring.c:2890
Modules linked in:
CPU: 0 PID: 36 Comm: kworker/u4:2 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Workqueue: events_unbound io_ring_exit_work
RIP: 0010:io_ring_exit_work+0x336/0x763 io_uring/io_uring.c:2890
Code: 89 de 48 8b 7c 24 30 48 8b 74 24 10 e8 1b 2d 11 00 48 85 c0 48 8b 5c 24 28 75 3b e8 1c d5 5d f7 e9 16 fe ff ff e8 12 d5 5d f7 <0f> 0b b8 70 17 00 00 48 89 44 24 10 eb c7 44 89 f1 80 e1 07 80 c1
RSP: 0018:ffffc90000ad7ac0 EFLAGS: 00010293
RAX: ffffffff8a249d9e RBX: ffff88802710b018 RCX: ffff888019288000
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000000
RBP: ffffc90000ad7c30 R08: ffffc90000ad7a47 R09: 1ffff9200015af48
R10: dffffc0000000000 R11: fffff5200015af49 R12: dffffc0000000000
R13: ffff88802710b000 R14: 0000000100004221 R15: 0000000100004222
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000457000 CR3: 00000000294ff000 CR4: 00000000003506f0
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 (49):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/03/20 05:58 linux-6.1.y f2ddafa93a25 2f245add .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/03/18 00:23 linux-6.1.y f2ddafa93a25 c8810548 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/03/17 12:03 linux-6.1.y f2ddafa93a25 c01bca74 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/03/12 14:34 linux-6.1.y f2ddafa93a25 4efadf07 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/03/10 17:34 linux-6.1.y f2ddafa93a25 4683d576 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/03/10 17:34 linux-6.1.y f2ddafa93a25 4683d576 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/03/10 07:06 linux-6.1.y f2ddafa93a25 6972f302 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/03/10 07:06 linux-6.1.y f2ddafa93a25 6972f302 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/03/09 19:27 linux-6.1.y f2ddafa93a25 176bead5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/03/09 19:27 linux-6.1.y f2ddafa93a25 176bead5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/03/09 18:40 linux-6.1.y f2ddafa93a25 176bead5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/03/07 05:15 linux-6.1.y f2ddafa93a25 5cb44a80 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/03/05 20:00 linux-6.1.y f2ddafa93a25 d20b04c8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/03/05 20:00 linux-6.1.y f2ddafa93a25 d20b04c8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/02/24 16:54 linux-6.1.y 779f9571ac3e 96b1aa46 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/02/24 16:54 linux-6.1.y 779f9571ac3e 96b1aa46 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/02/18 18:41 linux-6.1.y 8ce36b2849ef 77d4d919 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/02/16 18:17 linux-6.1.y 8ce36b2849ef 5d52cba5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/02/16 18:12 linux-6.1.y 8ce36b2849ef 5d52cba5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/02/07 20:49 linux-6.1.y 0182cb5b74ee 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/02/07 03:01 linux-6.1.y 0182cb5b74ee f20fc9f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/01/31 16:10 linux-6.1.y cd9b81672742 afc0c4d4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/01/31 03:37 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
2026/03/06 04:40 linux-6.1.y f2ddafa93a25 31e9c887 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 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.