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: 763d, last: 9h20m
✨ AI Jobs (1)
ID Workflow Result Correct Bug Created Started Finished Revision Error
d21d7186-37b0-483d-b7ba-bcc3e3a2f4a8 repro WARNING in io_ring_exit_work (2) 2026/03/08 04:54 2026/03/08 04:54 2026/03/08 05:03 31e9c887f7dc24e04b3ca70d0d54fc34141844b0
Discussions (7)
Title Replies (including bot) Last reply
[syzbot] Monthly io-uring report (Jan 2026) 0 (1) 2026/01/14 06:52
[syzbot] Monthly io-uring report (Dec 2025) 1 (2) 2025/12/05 04:05
[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 331d 459d 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 985d 1076d 0/3 auto-obsoleted due to no activity on 2023/10/19 11:52
linux-6.6 WARNING in io_ring_exit_work -1 288 2d12h 278d 0/2 upstream: reported on 2025/06/18 00:00
linux-6.1 WARNING in io_ring_exit_work (3) -1 51 1d23h 256d 0/3 upstream: reported on 2025/07/10 06:43
linux-5.15 WARNING in io_ring_exit_work -1 9 977d 1085d 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 1059d 1833d 0/29 auto-obsoleted due to no activity on 2023/07/28 02:36

Sample crash report:
------------[ cut here ]------------
time_after(jiffies, timeout)
WARNING: io_uring/io_uring.c:2342 at io_ring_exit_work+0x4a3/0x960 io_uring/io_uring.c:2342, CPU#0: kworker/u8:5/104
Modules linked in:
CPU: 0 UID: 0 PID: 104 Comm: kworker/u8:5 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Workqueue: iou_exit io_ring_exit_work
RIP: 0010:io_ring_exit_work+0x4a3/0x960 io_uring/io_uring.c:2342
Code: c6 05 17 8a d0 0e 01 48 c7 c7 40 6f 26 8c be 25 00 00 00 48 c7 c2 60 6a 26 8c e8 78 d2 76 00 e9 88 fe ff ff e8 4e 9f 9a 00 90 <0f> 0b 90 b8 70 17 00 00 48 89 44 24 10 eb 9f c7 84 24 b0 00 00 00
RSP: 0018:ffffc900025c7940 EFLAGS: 00010293
RAX: ffffffff812b01b2 RBX: 0000000100008467 RCX: ffff88801d721e80
RDX: 0000000000000000 RSI: fffffffffffffffa RDI: 0000000000000000
RBP: ffffc900025c7ad0 R08: ffffc900025c78c7 R09: 1ffff920004b8f18
R10: dffffc0000000000 R11: fffff520004b8f19 R12: dffffc0000000000
R13: 0000000100008461 R14: 0000000000002000 R15: ffff8880795e6000
FS:  0000000000000000(0000) GS:ffff88812545d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fca825ad400 CR3: 00000000442e3000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 process_one_work kernel/workqueue.c:3276 [inline]
 process_scheduled_works+0xb6e/0x18c0 kernel/workqueue.c:3359
 worker_thread+0xa53/0xfc0 kernel/workqueue.c:3440
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Crashes (6448):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/03/22 21:58 upstream 8d8bd2a5aa98 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2026/03/22 20:39 upstream 8d8bd2a5aa98 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2026/03/22 18:40 upstream 113ae7b4decc 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2026/03/22 12:39 upstream 113ae7b4decc 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2026/03/22 10:24 upstream 113ae7b4decc 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in io_ring_exit_work
2026/03/22 03:22 upstream 113ae7b4decc 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2026/03/22 01:40 upstream 113ae7b4decc 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2026/03/22 01:37 upstream 113ae7b4decc 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2026/03/22 00:08 upstream 113ae7b4decc 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in io_ring_exit_work
2026/03/21 14:52 upstream a0c83177734a 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2026/03/21 13:27 upstream a0c83177734a 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2026/03/21 12:01 upstream a0c83177734a 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2026/03/21 04:15 upstream c612261bedd6 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2026/03/20 23:21 upstream c612261bedd6 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2026/03/20 21:55 upstream c612261bedd6 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2026/03/20 02:57 upstream 8a30aeb0d1b4 bd6dcb30 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2026/03/19 14:10 upstream 8a30aeb0d1b4 bd6dcb30 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2026/03/19 12:40 upstream 8a30aeb0d1b4 bd6dcb30 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2026/03/19 11:27 upstream 8a30aeb0d1b4 bd6dcb30 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2026/03/19 09:42 upstream 8a30aeb0d1b4 0199f9a1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2026/03/19 06:40 upstream 8a30aeb0d1b4 0199f9a1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2026/03/19 06:29 upstream 8a30aeb0d1b4 0199f9a1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2026/03/19 04:15 upstream 8a30aeb0d1b4 0199f9a1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2026/03/18 23:55 upstream a989fde763f4 0199f9a1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2026/03/18 21:34 upstream a989fde763f4 0199f9a1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2026/03/18 15:49 upstream a989fde763f4 0199f9a1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2026/03/18 13:55 upstream a989fde763f4 0199f9a1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2026/03/18 13:49 upstream a989fde763f4 0199f9a1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2026/03/17 23:48 upstream f0caa1d49cc0 c8810548 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2026/03/17 12:39 upstream 2d1373e4246d c01bca74 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in io_ring_exit_work
2026/03/17 11:01 upstream 2d1373e4246d c01bca74 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2026/03/17 09:46 upstream 2d1373e4246d c01bca74 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2026/03/17 08:40 upstream 2d1373e4246d 0737c18f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in io_ring_exit_work
2026/03/17 00:41 upstream 2d1373e4246d 0737c18f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2026/03/16 23:39 upstream 2d1373e4246d 0737c18f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2026/03/16 22:26 upstream 2d1373e4246d 0737c18f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2026/03/16 19:39 upstream f338e7738378 64e21424 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2026/03/16 13:42 upstream f338e7738378 64e21424 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2026/03/16 11:44 upstream f338e7738378 64e21424 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2026/03/16 10:33 upstream f338e7738378 64e21424 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2026/03/16 10:32 upstream f338e7738378 64e21424 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in io_ring_exit_work
2026/03/08 01:11 upstream 4ae12d8bd9a8 5cb44a80 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in io_ring_exit_work
2025/09/24 22:02 upstream 4ea5af085908 0abd0691 .config console log report info [disk image] [vmlinux] [kernel image] ci-qemu-gce-upstream-auto WARNING in io_ring_exit_work
2026/03/20 10:04 upstream 0e4f8f1a3d08 2f245add .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in io_ring_exit_work
2026/03/19 21:26 upstream e9825d1c7957 bd6dcb30 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in io_ring_exit_work
2026/03/18 04:44 upstream f0caa1d49cc0 c8810548 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in io_ring_exit_work
2026/03/17 21:50 upstream f0caa1d49cc0 c8810548 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in io_ring_exit_work
2026/03/21 02:58 upstream 42bddab0563f 5b92003d .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in io_ring_exit_work
2026/03/18 11:10 upstream a989fde763f4 0199f9a1 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in io_ring_exit_work
2026/03/17 22:18 upstream f0caa1d49cc0 c8810548 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in io_ring_exit_work
2026/02/02 06:56 upstream 9f2693489ef8 6b8752f2 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm64-mte WARNING in io_ring_exit_work
2025/12/15 16:48 upstream 8f0b4cce4481 a066d2bc .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm64 WARNING in io_ring_exit_work
2025/09/17 15:13 upstream 5aca7966d2a7 e2beed91 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm64-compat WARNING in io_ring_exit_work
2026/03/21 08:11 linux-next 785f0eb2f85d 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in io_ring_exit_work
2026/03/20 23:52 linux-next 785f0eb2f85d 5b92003d .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
2026/02/07 01:57 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 f20fc9f9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in io_ring_exit_work
2026/03/04 03:04 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git for-next 18be4ca5cb4e 4180d919 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-riscv64 WARNING in io_ring_exit_work
* Struck through repros no longer work on HEAD.