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: 448d, last: 1h35m
Discussions (4)
Title Replies (including bot) Last reply
[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 (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in io_ring_exit_work (2) 27 16d 144d 0/3 upstream: reported on 2024/12/18 15:50
linux-6.1 WARNING in io_ring_exit_work 5 670d 761d 0/3 auto-obsoleted due to no activity on 2023/10/19 11:52
linux-5.15 WARNING in io_ring_exit_work 9 662d 770d 0/3 auto-obsoleted due to no activity on 2023/10/27 08:42
upstream WARNING in io_ring_exit_work io-uring C done done 3550 744d 1518d 0/28 auto-obsoleted due to no activity on 2023/07/28 02:36

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 10260 at io_uring/io_uring.c:2912 io_ring_exit_work+0x43c/0x880 io_uring/io_uring.c:2912
Modules linked in:
CPU: 0 UID: 0 PID: 10260 Comm: kworker/u8:28 Not tainted 6.15.0-rc5-syzkaller-00353-gcd802e7e5f1e #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+0x43c/0x880 io_uring/io_uring.c:2912
Code: 00 48 8b 7c 24 30 48 8b 74 24 38 e8 4e 2a 2c 0a 48 85 c0 48 8b 5c 24 08 75 3c e8 df a3 94 00 e9 2b fd ff ff e8 d5 a3 94 00 90 <0f> 0b 90 b8 70 17 00 00 48 89 44 24 38 eb c8 89 d9 80 e1 07 80 c1
RSP: 0018:ffffc9000b4f7980 EFLAGS: 00010293
RAX: ffffffff812b2b9b RBX: 00000001000103b6 RCX: ffff888027dc9e00
RDX: 0000000000000000 RSI: fffffffffffffffb RDI: 0000000000000000
RBP: ffffc9000b4f7b10 R08: ffffc9000b4f7907 R09: 1ffff9200169ef20
R10: dffffc0000000000 R11: fffff5200169ef21 R12: 00000001000103b1
R13: ffff88805495e310 R14: ffff88805495e480 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881260c9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d811ff8 CR3: 000000007799b000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xade/0x17a0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x711/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x4e/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Crashes (811):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/05/11 23:47 upstream cd802e7e5f1e 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/05/11 11:41 upstream 3ce9925823c7 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/05/11 10:38 upstream 3ce9925823c7 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/05/11 03:27 upstream bec6f00f120e 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2025/05/09 12:01 upstream 9c69f8884904 bb813bcc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2025/05/09 09:23 upstream 9c69f8884904 bb813bcc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/05/09 04:55 upstream 9c69f8884904 bb813bcc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in io_ring_exit_work
2025/05/08 19:26 upstream 2c89c1b655c0 dbf35fa1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/05/07 18:37 upstream 707df3375124 350f4ffc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/05/07 13:51 upstream 0d8d44db295c 350f4ffc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/05/07 06:34 upstream 0d8d44db295c 350f4ffc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2025/05/07 01:41 upstream 0d8d44db295c 350f4ffc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/05/07 00:37 upstream 0d8d44db295c 350f4ffc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/05/06 15:50 upstream 01f95500a162 ae98e6b9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/05/06 13:53 upstream 01f95500a162 ae98e6b9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/05/06 11:47 upstream 01f95500a162 ae98e6b9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/05/06 10:30 upstream 01f95500a162 ae98e6b9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/05/05 17:02 upstream 92a09c47464d 6ca47dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2025/05/05 06:21 upstream 92a09c47464d b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/05/04 10:51 upstream 2a239ffbebb5 b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in io_ring_exit_work
2025/05/04 06:25 upstream 2a239ffbebb5 b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2025/05/04 00:57 upstream 2a239ffbebb5 b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/05/03 03:07 upstream 2bfcee565c3a b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/05/02 14:06 upstream ebd297a2affa 2bfec9c0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/05/02 06:04 upstream ebd297a2affa 51b137cd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/05/01 22:20 upstream 4f79eaa2ceac 51b137cd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in io_ring_exit_work
2025/05/01 15:49 upstream 4f79eaa2ceac 51b137cd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/05/01 10:57 upstream 4f79eaa2ceac ce7952f4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2025/05/01 06:31 upstream b6ea1680d0ac ce7952f4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/04/30 21:57 upstream b6ea1680d0ac ce7952f4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/04/30 14:37 upstream 8bac8898fe39 85a5a23f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/04/30 11:47 upstream 8bac8898fe39 85a5a23f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/04/30 07:56 upstream 8bac8898fe39 85a5a23f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in io_ring_exit_work
2025/04/30 03:31 upstream 8bac8898fe39 85a5a23f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/04/30 02:12 upstream 8bac8898fe39 aeb6ec69 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2025/04/29 22:30 upstream ca91b9500108 aeb6ec69 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in io_ring_exit_work
2025/04/29 10:31 upstream ca91b9500108 aeb6ec69 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2025/04/28 18:35 upstream f15d97df5afa c6b4fb39 .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
2025/05/08 14:15 upstream d76bb1ebb558 dbf35fa1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/05/03 09:47 upstream 95d3481af6dc b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/05/02 04:15 upstream ebd297a2affa 51b137cd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/05/01 14:42 upstream 4f79eaa2ceac 51b137cd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/05/01 12:16 upstream 4f79eaa2ceac ce7952f4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/05/01 00:48 upstream b6ea1680d0ac ce7952f4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2025/05/10 12:18 upstream 1a33418a69cc 77908e5f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in io_ring_exit_work
2025/05/01 10:44 upstream 7a13c14ee59d ce7952f4 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in io_ring_exit_work
2025/05/12 02:58 upstream cd802e7e5f1e 77908e5f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in io_ring_exit_work
2025/05/02 18:01 upstream ebd297a2affa d7f099d1 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 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
2025/02/19 18:29 linux-next e5d3fd687aac cbd8edab .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
2025/05/08 01:12 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e0f4c8dd9d2d dbf35fa1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in io_ring_exit_work
2025/05/06 03:50 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e0f4c8dd9d2d ae98e6b9 .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.