syzbot


WARNING in io_ring_exit_work (2)

Status: upstream: reported on 2024/02/22 09:35
Subsystems: io-uring
[Documentation on labels]
Reported-by: syzbot+557a278955ff3a4d3938@syzkaller.appspotmail.com
First crash: 506d, last: 13h09m
Discussions (5)
Title Replies (including bot) Last reply
[syzbot] Monthly io-uring report (Jul 2025) 0 (1) 2025/07/03 08:17
[syzbot] Monthly io-uring report (Feb 2025) 0 (1) 2025/02/08 14:50
[syzbot] Monthly io-uring report (Dec 2024) 0 (1) 2024/12/26 09:01
[syzbot] Monthly io-uring report (Apr 2024) 0 (1) 2024/04/15 09:23
[syzbot] [io-uring?] WARNING in io_ring_exit_work (2) 0 (1) 2024/02/22 09:35
Similar bugs (5)
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 74d 202d 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 728d 819d 0/3 auto-obsoleted due to no activity on 2023/10/19 11:52
linux-6.6 WARNING in io_ring_exit_work -1 3 7d14h 21d 0/2 upstream: reported on 2025/06/18 00:00
linux-5.15 WARNING in io_ring_exit_work -1 9 721d 828d 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 802d 1576d 0/29 auto-obsoleted due to no activity on 2023/07/28 02:36

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1327 at io_uring/io_uring.c:2922 io_ring_exit_work+0x4ed/0x930 io_uring/io_uring.c:2922
Modules linked in:
CPU: 0 UID: 0 PID: 1327 Comm: kworker/u8:5 Not tainted 6.16.0-rc5-syzkaller-00025-gd006330be3f7 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: iou_exit io_ring_exit_work
RIP: 0010:io_ring_exit_work+0x4ed/0x930 io_uring/io_uring.c:2922
Code: c6 05 e9 73 60 0e 01 48 c7 c7 20 04 e2 8b be 24 00 00 00 48 c7 c2 80 03 e2 8b e8 5e 13 73 00 e9 7b fe ff ff e8 04 e0 94 00 90 <0f> 0b 90 b8 70 17 00 00 48 89 44 24 38 e9 5f ff ff ff 89 d9 80 e1
RSP: 0018:ffffc900040bf8e0 EFLAGS: 00010293
RAX: ffffffff812b45fc RBX: 000000010000ec58 RCX: ffff8880277e0000
RDX: 0000000000000000 RSI: fffffffffffffffe RDI: 0000000000000000
RBP: ffffc900040bfa70 R08: ffffc900040bf867 R09: 1ffff92000817f0c
R10: dffffc0000000000 R11: fffff52000817f0d R12: 000000010000ec56
R13: ffff88807882c310 R14: ffff88807882c480 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30e17ff8 CR3: 0000000028eb8000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
 kthread+0x711/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Crashes (1397):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/07/08 20:03 upstream d006330be3f7 abade794 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/07/08 17:42 upstream d7b8f8e20813 abade794 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/07/07 13:03 upstream d7b8f8e20813 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in io_ring_exit_work
2025/07/07 08:24 upstream d7b8f8e20813 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2025/07/07 02:05 upstream d7b8f8e20813 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/07/07 00:30 upstream 1f988d0788f5 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2025/07/06 14:59 upstream 1f988d0788f5 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2025/07/06 13:46 upstream 1f988d0788f5 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/07/06 12:40 upstream 1f988d0788f5 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/07/06 12:40 upstream 1f988d0788f5 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/07/06 00:12 upstream 05df91921da6 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2025/07/05 23:12 upstream 05df91921da6 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/07/05 09:07 upstream a79a588fc176 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/07/04 19:14 upstream 4c06e63b9203 d869b261 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/07/04 16:09 upstream 4c06e63b9203 76ad128c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/07/04 16:09 upstream 4c06e63b9203 76ad128c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/07/04 12:48 upstream 17bbde2e1716 76ad128c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2025/07/04 02:40 upstream 17bbde2e1716 76ad128c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2025/07/04 01:13 upstream 17bbde2e1716 76ad128c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/07/03 21:06 upstream 17bbde2e1716 115ceea7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/07/03 09:05 upstream b4911fb0b060 115ceea7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/07/03 06:28 upstream b4911fb0b060 0cd59a8f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/07/02 19:43 upstream b4911fb0b060 0cd59a8f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/07/02 19:38 upstream b4911fb0b060 0cd59a8f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/07/02 15:21 upstream 66701750d556 0cd59a8f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2025/07/02 13:39 upstream 66701750d556 0cd59a8f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/07/01 18:25 upstream 66701750d556 ffe4b334 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/07/01 10:50 upstream 66701750d556 6e83b42d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2025/07/01 08:21 upstream 66701750d556 6e83b42d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/07/01 05:10 upstream 66701750d556 6e83b42d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2025/07/01 03:16 upstream 66701750d556 6e83b42d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/06/30 14:24 upstream d0b3b7b22dfa fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2025/06/30 09:03 upstream d0b3b7b22dfa fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/06/30 02:10 upstream d0b3b7b22dfa fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/06/30 00:49 upstream d0b3b7b22dfa fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/06/29 19:21 upstream afa9a6f4f574 fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/06/28 11:35 upstream 35e261cd95dd fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in io_ring_exit_work
2025/01/12 03:54 upstream b62cef9a5c67 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in io_ring_exit_work
2025/07/06 19:29 upstream 1f988d0788f5 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/07/06 05:07 upstream 05df91921da6 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/07/05 04:09 upstream 4c06e63b9203 d869b261 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/07/04 20:36 upstream 4c06e63b9203 d869b261 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/07/04 06:01 upstream 17bbde2e1716 76ad128c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/07/03 14:29 upstream b4911fb0b060 115ceea7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/07/02 22:32 upstream b4911fb0b060 0cd59a8f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/07/01 20:06 upstream 66701750d556 ffe4b334 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/06/30 21:41 upstream d0b3b7b22dfa 6e83b42d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/06/29 23:43 upstream d0b3b7b22dfa fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/07/01 12:58 upstream 66701750d556 091a06cd .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in io_ring_exit_work
2025/07/06 10:29 upstream 1f988d0788f5 4f67c4ae .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in io_ring_exit_work
2025/07/06 07:40 upstream 1f988d0788f5 4f67c4ae .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in io_ring_exit_work
2025/07/05 00:50 upstream c435a4f487e8 4f67c4ae .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in io_ring_exit_work
2025/07/03 00:50 upstream b4911fb0b060 115ceea7 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in io_ring_exit_work
2025/06/30 06:47 upstream afa9a6f4f574 fc9d8ee5 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in io_ring_exit_work
2025/05/26 06:31 upstream 0f8c0258bf04 2d4582d0 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm64 WARNING in io_ring_exit_work
2025/02/25 10:55 upstream d082ecbc71e9 d34966d1 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm64-compat WARNING in io_ring_exit_work
2025/06/20 23:43 linux-next 5d4809e25903 e3003213 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in io_ring_exit_work
2024/02/18 09:25 linux-next 2c3b09aac00d 578f7538 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in io_ring_exit_work
2025/07/03 22:20 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 3cd1604f930f 115ceea7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in io_ring_exit_work
* Struck through repros no longer work on HEAD.