syzbot
WARNING in pwq_unbound_release_workfn (2)
Status:
auto-closed as invalid on 2021/10/20 06:51
Subsystems:
kernel
[Documentation on labels]
Reported-by: syzbot+d04950c1e97f51d0068a@syzkaller.appspotmail.com
First crash: 1847d, last: 1841d
Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 1711 at kernel/locking/lockdep.c:6305 lockdep_unregister_key+0x19a/0x250 kernel/locking/lockdep.c:6305
Modules linked in:
CPU: 1 PID: 1711 Comm: kworker/1:2 Not tainted 5.14.0-rc2-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
Workqueue: events pwq_unbound_release_workfn
RIP: 0010:lockdep_unregister_key+0x19a/0x250 kernel/locking/lockdep.c:6305
Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 8f 00 00 00 4d 89 7d 08 48 b8 22 01 00 00 00 00 ad de 48 89 43 08 eb 02 <0f> 0b 4c 89 f7 ba 01 00 00 00 48 89 ee e8 44 fd ff ff 4c 89 f7 e8
RSP: 0018:ffffc90006297cb0 EFLAGS: 00010046
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffffffff1ad87cd
RDX: 1ffffffff1fcb5ff RSI: 0000000000000000 RDI: ffffffff8fe5aff8
RBP: ffff888027a1b928 R08: 0000000000000001 R09: 0000000000000003
R10: fffff52000c52f78 R11: 0000000000086088 R12: 0000000000000246
R13: dffffc0000000000 R14: ffffffff8fccd858 R15: ffff888029f75470
FS: 0000000000000000(0000) GS:ffff88802cb00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561e039ca620 CR3: 0000000047a10000 CR4: 0000000000150ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
wq_unregister_lockdep kernel/workqueue.c:3468 [inline]
pwq_unbound_release_workfn+0x223/0x2d0 kernel/workqueue.c:3700
process_one_work+0x98d/0x1630 kernel/workqueue.c:2276
worker_thread+0x658/0x11f0 kernel/workqueue.c:2422
kthread+0x3e5/0x4d0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
* Struck through repros no longer work on HEAD.