------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 1 PID: 9042 at kernel/locking/lockdep.c:203 hlock_class kernel/locking/lockdep.c:203 [inline] WARNING: CPU: 1 PID: 9042 at kernel/locking/lockdep.c:203 hlock_class kernel/locking/lockdep.c:192 [inline] WARNING: CPU: 1 PID: 9042 at kernel/locking/lockdep.c:203 check_wait_context kernel/locking/lockdep.c:4700 [inline] WARNING: CPU: 1 PID: 9042 at kernel/locking/lockdep.c:203 __lock_acquire+0x1344/0x54a0 kernel/locking/lockdep.c:4977 Modules linked in: CPU: 1 PID: 9042 Comm: kworker/1:7 Not tainted 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events sco_sock_timeout RIP: 0010:hlock_class kernel/locking/lockdep.c:203 [inline] RIP: 0010:hlock_class kernel/locking/lockdep.c:192 [inline] RIP: 0010:check_wait_context kernel/locking/lockdep.c:4700 [inline] RIP: 0010:__lock_acquire+0x1344/0x54a0 kernel/locking/lockdep.c:4977 Code: 08 84 d2 0f 85 f1 3d 00 00 8b 05 8f 81 14 0c 85 c0 0f 85 f4 fd ff ff 48 c7 c6 60 14 8c 89 48 c7 c7 20 08 8c 89 e8 e3 a2 9a 07 <0f> 0b 31 ed e9 b7 f0 ff ff e8 be 31 7b 02 85 c0 0f 84 12 fe ff ff RSP: 0018:ffffc90004407aa0 EFLAGS: 00010082 RAX: 0000000000000000 RBX: ffff88804bd46120 RCX: 0000000000000000 RDX: ffff88802a725700 RSI: ffffffff815f39c8 RDI: fffff52000880f46 RBP: 0000000000001e2d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815ed79e R11: 0000000000000000 R12: ffff88802a7261b0 R13: ffff88802a725700 R14: 0000000000040000 R15: 0000000000041e2d FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fed41456700 CR3: 0000000078590000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire kernel/locking/lockdep.c:5637 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602 lock_sock_nested+0x36/0xf0 net/core/sock.c:3285 lock_sock include/net/sock.h:1645 [inline] sco_sock_timeout+0xd2/0x290 net/bluetooth/sco.c:97 process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298 worker_thread+0x658/0x11f0 kernel/workqueue.c:2445 kthread+0x405/0x4f0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295