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: 543d, last: 2h40m
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 (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 111d 239d 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 765d 856d 0/3 auto-obsoleted due to no activity on 2023/10/19 11:52
linux-6.6 WARNING in io_ring_exit_work -1 9 40m 57d 0/2 upstream: reported on 2025/06/18 00:00
linux-6.1 WARNING in io_ring_exit_work (3) -1 1 35d 35d 0/3 upstream: reported on 2025/07/10 06:43
linux-5.15 WARNING in io_ring_exit_work -1 9 757d 865d 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 838d 1613d 0/29 auto-obsoleted due to no activity on 2023/07/28 02:36

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6455 at io_uring/io_uring.c:2981 io_ring_exit_work+0x4ed/0x930 io_uring/io_uring.c:2981
Modules linked in:
CPU: 0 UID: 0 PID: 6455 Comm: kworker/u8:15 Not tainted 6.17.0-rc1-syzkaller-00038-g0cc53520e68b #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: iou_exit io_ring_exit_work
RIP: 0010:io_ring_exit_work+0x4ed/0x930 io_uring/io_uring.c:2981
Code: c6 05 f8 e1 61 0e 01 48 c7 c7 20 5e e2 8b be 24 00 00 00 48 c7 c2 c0 5d e2 8b e8 1e 1d 72 00 e9 7b fe ff ff e8 a4 42 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:ffffc9000aee78e0 EFLAGS: 00010293
RAX: ffffffff812b68ec RBX: 000000010004288e RCX: ffff888029699e00
RDX: 0000000000000000 RSI: fffffffffffffffb RDI: 0000000000000000
RBP: ffffc9000aee7a70 R08: ffffc9000aee7867 R09: 1ffff920015dcf0c
R10: dffffc0000000000 R11: fffff520015dcf0d R12: 0000000100042889
R13: ffff8880660ca310 R14: ffff8880660ca480 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe5dfddd34 CR3: 000000000df36000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x70e/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Crashes (1824):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/08/14 18:38 upstream 0cc53520e68b dcc075fb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2025/08/14 15:48 upstream 0cc53520e68b dcc075fb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/08/14 14:32 upstream 0cc53520e68b dcc075fb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/08/14 14:30 upstream 0cc53520e68b dcc075fb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/08/14 13:25 upstream 0cc53520e68b dcc075fb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2025/08/14 08:29 upstream 0cc53520e68b 22ec1469 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/08/14 00:19 upstream 038d61fd6422 22ec1469 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/08/13 20:09 upstream 91325f31afc1 22ec1469 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/08/13 19:02 upstream 91325f31afc1 22ec1469 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/08/13 07:28 upstream 8742b2d8935f 22ec1469 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2025/08/13 03:31 upstream 8742b2d8935f 22ec1469 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2025/08/13 03:22 upstream 8742b2d8935f 22ec1469 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/08/13 02:13 upstream 8742b2d8935f 22ec1469 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2025/08/12 23:54 upstream 8742b2d8935f c06e8995 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2025/08/12 11:07 upstream 038d61fd6422 c06e8995 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/08/11 20:18 upstream 038d61fd6422 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/08/11 16:51 upstream 8f5ae30d69d7 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2025/08/11 10:09 upstream 038d61fd6422 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/08/11 01:11 upstream 8f5ae30d69d7 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/08/10 20:30 upstream 2b38afce25c4 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in io_ring_exit_work
2025/08/10 12:26 upstream 2b38afce25c4 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/08/09 21:57 upstream 561c80369df0 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/08/09 13:51 upstream 0227b49b5027 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2025/08/09 11:09 upstream 0227b49b5027 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/08/09 02:05 upstream 038d61fd6422 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/08/09 01:48 upstream 37816488247d 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/08/08 15:19 upstream 37816488247d 987b750d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/08/08 02:56 upstream 038d61fd6422 6a893178 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/08/07 22:52 upstream 6e64f4580381 04cffc22 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2025/08/07 14:59 upstream 6e64f4580381 04cffc22 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/08/07 12:45 upstream 038d61fd6422 04cffc22 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/08/07 05:33 upstream cca7a0aae895 4bd24a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/08/06 22:20 upstream 038d61fd6422 4bd24a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/08/06 16:33 upstream 479058002c32 4bd24a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/08/06 16:08 upstream 479058002c32 4bd24a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/08/06 13:18 upstream 038d61fd6422 4bd24a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-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
2025/08/12 12:36 upstream 53e760d89498 c06e8995 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/08/08 13:20 upstream bec077162bd0 987b750d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/08/08 10:14 upstream bec077162bd0 6a893178 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/08/08 01:09 upstream 6e64f4580381 6a893178 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/08/08 01:08 upstream 6e64f4580381 6a893178 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/08/07 04:32 upstream cca7a0aae895 4bd24a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/08/06 14:49 upstream 479058002c32 4bd24a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/08/14 04:42 upstream 91325f31afc1 22ec1469 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in io_ring_exit_work
2025/08/12 22:36 upstream 8742b2d8935f 22ec1469 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in io_ring_exit_work
2025/08/11 18:00 upstream 8f5ae30d69d7 c06e8995 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in io_ring_exit_work
2025/08/09 00:27 upstream 37816488247d 32a0e5ed .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in io_ring_exit_work
2025/08/08 11:46 upstream bec077162bd0 56444e07 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in io_ring_exit_work
2025/08/08 05:43 upstream bec077162bd0 6a893178 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in io_ring_exit_work
2025/08/06 23:53 upstream cca7a0aae895 9a42d6b1 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in io_ring_exit_work
2025/08/06 05:51 upstream 7881cd6886a8 ffe1dd46 .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
2025/08/05 14:48 linux-next afec768a6a8f 904e669c .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
2025/07/29 17:28 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 82af5ea7c611 f8f2b4da .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.