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: 232d, last: 44d
Discussions (2)
Title Replies (including bot) Last reply
[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 (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in io_ring_exit_work 5 454d 545d 0/3 auto-obsoleted due to no activity on 2023/10/19 11:52
linux-5.15 WARNING in io_ring_exit_work 9 446d 554d 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 527d 1302d 0/28 auto-obsoleted due to no activity on 2023/07/28 02:36

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 53 at io_uring/io_uring.c:2796 io_ring_exit_work+0x36d/0x1f60 io_uring/io_uring.c:2796
Modules linked in:
CPU: 1 UID: 0 PID: 53 Comm: kworker/u8:3 Not tainted 6.11.0-rc4-syzkaller-00255-gd2bafcf224f3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: iou_exit io_ring_exit_work
RIP: 0010:io_ring_exit_work+0x36d/0x1f60 io_uring/io_uring.c:2796
Code: 5b 17 00 00 48 8b 05 02 0f 27 09 31 ff 4c 8b bd a8 fe ff ff 49 29 c7 4c 89 fe e8 5e e1 11 fd 4d 85 ff 79 0f e8 e4 de 11 fd 90 <0f> 0b 90 41 be 70 17 00 00 e8 d5 de 11 fd 48 8b bd 80 fe ff ff 4c
RSP: 0018:ffffc90000be7b00 EFLAGS: 00010293
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff8479e312
RDX: ffff888018af0000 RSI: ffffffff8479e31c RDI: 0000000000000007
RBP: ffffc90000be7cb0 R08: 0000000000000007 R09: 0000000000000000
R10: fffffffffffffffd R11: 0000000000000000 R12: ffff88807c866000
R13: ffff88807c8666f0 R14: 0000000000000005 R15: fffffffffffffffd
FS:  0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8523c45000 CR3: 000000000db7c000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 process_one_work+0x9c8/0x1b40 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x6c8/0xed0 kernel/workqueue.c:3389
 kthread+0x2c4/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

Crashes (9):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/08/24 07:34 upstream d2bafcf224f3 d7d32352 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2024/06/30 11:23 upstream 8282d5af7be8 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2024/06/30 11:23 upstream 8282d5af7be8 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in io_ring_exit_work
2024/06/02 17:11 upstream 83814698cf48 3113787f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2024/05/11 18:33 upstream cf87f46fd34d 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in io_ring_exit_work
2024/05/11 18:33 upstream cf87f46fd34d 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in io_ring_exit_work
2024/05/08 06:00 upstream dccb07f2914c 4cf3f9b3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in io_ring_exit_work
2024/04/14 15:56 upstream fe46a7dd189e c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-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
* Struck through repros no longer work on HEAD.