WARNING in io_ring_exit_work (4)

Status: upstream: reported on 2026/07/22 17:40
Reported-by: syzbot+f2520424bcf7f3a801a5@syzkaller.appspotmail.com
First crash: 114d, last: 6h47m
▶ ▼ Similar bugs (10)
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 567d 695d 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 1221d 1312d 0/3 auto-obsoleted due to no activity on 2023/10/19 11:52
android-6-12 WARNING in io_ring_exit_work -1 1 209d 209d 0/1 auto-obsoleted due to no activity on 2026/07/17 06:56
upstream WARNING in io_ring_exit_work (2) prio:high io-uring -1 syz 13001 8h27m 995d 0/29 upstream: reported syz repro on 2024/02/22 09:35
linux-6.6 WARNING in io_ring_exit_work origin:lts-only -1 syz 2370 7h09m 513d 0/2 upstream: reported syz repro on 2025/06/18 00:00
linux-6.1 WARNING in io_ring_exit_work (3) -1 61 231d 491d 0/3 auto-obsoleted due to no activity on 2026/06/05 18:24
linux-5.15 WARNING in io_ring_exit_work (2) -1 7 205d 209d 0/3 auto-obsoleted due to no activity on 2026/07/31 07:28
linux-5.15 WARNING in io_ring_exit_work -1 9 1213d 1321d 0/3 auto-obsoleted due to no activity on 2023/10/27 08:42
upstream WARNING in io_ring_exit_work io-uring -1 syz, C done done 3550 1294d 2069d 0/29 auto-obsoleted due to no activity on 2023/07/28 02:36
android-6-12 WARNING in io_ring_exit_work (2) -1 14 49d 77d 0/1 premoderation: reported on 2026/08/28 04:27

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 9836 at io_uring/io_uring.c:2918 io_ring_exit_work+0x32f/0x79a io_uring/io_uring.c:2918
Modules linked in:
CPU: 0 PID: 9836 Comm: kworker/u4:37 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
Workqueue: events_unbound io_ring_exit_work
RIP: 0010:io_ring_exit_work+0x32f/0x79a io_uring/io_uring.c:2918
Code: 89 fd 48 8b 7c 24 30 48 8b 74 24 08 e8 c8 3a 11 00 48 85 c0 75 40 e8 ce 82 53 f7 4c 8b 7c 24 10 e9 1e fe ff ff e8 bf 82 53 f7 <0f> 0b b8 70 17 00 00 48 89 44 24 08 eb c7 44 89 e9 80 e1 07 80 c1
RSP: 0018:ffffc90003ca7ac0 EFLAGS: 00010293
RAX: ffffffff8a2ee5e1 RBX: 1ffff1100f96c603 RCX: ffff88807bb83c00
RDX: 0000000000000000 RSI: fffffffffffffffc RDI: 0000000000000000
RBP: ffffc90003ca7c30 R08: ffffc90003ca7a47 R09: 1ffff92000794f48
R10: dffffc0000000000 R11: fffff52000794f49 R12: dffffc0000000000
R13: 000000010002f4d9 R14: 000000010002f4dd R15: ffff88807cb63018
FS:  0000000000000000(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056214e38efa8 CR3: 000000007e10c000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 process_one_work+0x8ab/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaf5/0x12a0 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 (107):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/11/13 15:31 linux-6.1.y c75b0cf0982c be5d1971 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/11/13 10:08 linux-6.1.y c75b0cf0982c 26b2fee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/11/12 20:02 linux-6.1.y c75b0cf0982c c0087d7f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/11/12 20:02 linux-6.1.y c75b0cf0982c c0087d7f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/11/10 19:15 linux-6.1.y c75b0cf0982c d3056657 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/11/10 06:56 linux-6.1.y c75b0cf0982c 70ec0380 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/11/06 23:05 linux-6.1.y c75b0cf0982c 5cecaf1f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/11/06 00:44 linux-6.1.y 08889840163e 5cecaf1f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/11/05 11:34 linux-6.1.y 08889840163e 2ee8459f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/11/04 20:18 linux-6.1.y 08889840163e 73438ed0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/11/03 17:09 linux-6.1.y 08889840163e e2d35131 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/11/02 14:44 linux-6.1.y 08889840163e 6969b601 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/11/01 06:18 linux-6.1.y 08889840163e 25a0ae84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/31 13:13 linux-6.1.y 08889840163e 2041d3f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/31 13:13 linux-6.1.y 08889840163e 2041d3f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/30 21:11 linux-6.1.y 08889840163e 0ec395f8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/29 21:59 linux-6.1.y 79807e970724 b498adee .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/29 08:11 linux-6.1.y 79807e970724 b1d00f76 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/28 15:20 linux-6.1.y 79807e970724 858db2ec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/27 21:01 linux-6.1.y 79807e970724 96923c60 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/23 22:45 linux-6.1.y 79807e970724 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/23 10:09 linux-6.1.y 79807e970724 d566bfda .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/22 15:36 linux-6.1.y 79807e970724 b55fad29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/21 23:48 linux-6.1.y 79807e970724 4ba27f85 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/21 09:38 linux-6.1.y 79807e970724 61c200c7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/20 15:08 linux-6.1.y 79807e970724 df8746fb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/19 19:31 linux-6.1.y 79807e970724 72cdc28d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/17 03:51 linux-6.1.y 79807e970724 432c0077 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/16 15:21 linux-6.1.y 79807e970724 4c840a2f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/16 00:02 linux-6.1.y 79807e970724 3f2522c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/14 15:11 linux-6.1.y a500ba24937a 1a71827b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/14 02:24 linux-6.1.y a500ba24937a 7321cd29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/13 11:19 linux-6.1.y a500ba24937a 5a1eeac4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/09 21:56 linux-6.1.y a500ba24937a 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/09 21:56 linux-6.1.y a500ba24937a 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/08 22:00 linux-6.1.y a500ba24937a b2734a59 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/08 21:59 linux-6.1.y a500ba24937a b2734a59 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/08 08:13 linux-6.1.y a500ba24937a 4f6a9fcf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/08 08:12 linux-6.1.y a500ba24937a 4f6a9fcf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/07 13:21 linux-6.1.y a500ba24937a 6520ecdb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/07 13:20 linux-6.1.y a500ba24937a 6520ecdb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/06 03:15 linux-6.1.y a500ba24937a f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/01 15:49 linux-6.1.y 1a8763b93150 f5cdae2f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/10/01 15:48 linux-6.1.y 1a8763b93150 f5cdae2f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2026/07/22 17:39 linux-6.1.y 090666d3cc90 4a865b71 .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.