syzbot


WARNING in io_ring_exit_work (2)

Status: upstream: reported on 2024/12/18 15:50
Reported-by: syzbot+83fce5ee5b6c9ab573b6@syzkaller.appspotmail.com
First crash: 3d00h, last: 2d00h
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in io_ring_exit_work 5 529d 619d 0/3 auto-obsoleted due to no activity on 2023/10/19 11:52
upstream WARNING in io_ring_exit_work (2) io-uring 177 3d00h 303d 0/28 upstream: reported on 2024/02/22 09:35
linux-5.15 WARNING in io_ring_exit_work 9 521d 628d 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 602d 1376d 0/28 auto-obsoleted due to no activity on 2023/07/28 02:36

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 8969 at io_uring/io_uring.c:2798 io_ring_exit_work+0x31d/0x794
Modules linked in:
CPU: 0 PID: 8969 Comm: kworker/u4:16 Tainted: G        W          6.1.120-syzkaller-00773-g52f863f820fd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
Workqueue: events_unbound io_ring_exit_work
RIP: 0010:io_ring_exit_work+0x31d/0x794 io_uring/io_uring.c:2798
Code: 78 23 e8 f9 97 d9 f6 48 8b 7c 24 30 48 8b 74 24 18 e8 4a 04 0a 00 48 85 c0 75 3f e8 e0 97 d9 f6 e9 f9 fd ff ff e8 d6 97 d9 f6 <0f> 0b b8 70 17 00 00 48 89 44 24 18 eb cf 48 8b 4c 24 10 80 e1 07
RSP: 0018:ffffc900032b7ae0 EFLAGS: 00010293
RAX: ffffffff8ab1049a RBX: 0000000100007cc5 RCX: ffff8880257a0000
RDX: 0000000000000000 RSI: ffffffffffffff33 RDI: 0000000000000000
RBP: ffffc900032b7c50 R08: ffffffff8ab1046d R09: fffff52000656f4d
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000100007d92
R13: ffff88807b5ec260 R14: 1ffff1100f6bd84c R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f49883aad58 CR3: 000000005f8f6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/12/19 16:43 linux-6.1.y 52f863f820fd 1432fc84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in io_ring_exit_work
2024/12/18 18:26 linux-6.1.y 52f863f820fd a0626d3a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in io_ring_exit_work
2024/12/18 15:49 linux-6.1.y 52f863f820fd a0626d3a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in io_ring_exit_work
* Struck through repros no longer work on HEAD.