------------[ cut here ]------------ WARNING: CPU: 0 PID: 3438 at kernel/locking/lockdep.c:6305 lockdep_unregister_key+0x19a/0x250 kernel/locking/lockdep.c:6305 Modules linked in: CPU: 0 PID: 3438 Comm: kworker/0:2 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:ffffc9000e4ffcb0 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffffffff1ad8ffd RDX: 1ffffffff1fca634 RSI: 0000000000000004 RDI: ffffffff8fe531a0 RBP: ffff88801ec1e128 R08: 0000000000000001 R09: 0000000000000003 R10: fffff52001c9ff8c R11: 0000000000086088 R12: 0000000000000246 R13: dffffc0000000000 R14: ffffffff8fcc8858 R15: ffff88804baf9c70 FS: 0000000000000000(0000) GS:ffff88802ca00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc8b4628000 CR3: 0000000021c74000 CR4: 0000000000150ef0 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