------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 1 PID: 17834 at kernel/locking/lockdep.c:203 hlock_class kernel/locking/lockdep.c:203 [inline] WARNING: CPU: 1 PID: 17834 at kernel/locking/lockdep.c:203 hlock_class kernel/locking/lockdep.c:192 [inline] WARNING: CPU: 1 PID: 17834 at kernel/locking/lockdep.c:203 check_wait_context kernel/locking/lockdep.c:4688 [inline] WARNING: CPU: 1 PID: 17834 at kernel/locking/lockdep.c:203 __lock_acquire+0x1344/0x54a0 kernel/locking/lockdep.c:4965 Modules linked in: CPU: 1 PID: 17834 Comm: kworker/1:31 Not tainted 5.15.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events l2cap_chan_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:4688 [inline] RIP: 0010:__lock_acquire+0x1344/0x54a0 kernel/locking/lockdep.c:4965 Code: 08 84 d2 0f 85 f1 3d 00 00 8b 05 4f 74 13 0c 85 c0 0f 85 f4 fd ff ff 48 c7 c6 40 04 8c 89 48 c7 c7 00 f8 8b 89 e8 49 4f 97 07 <0f> 0b 31 ed e9 b7 f0 ff ff e8 be 79 7b 02 85 c0 0f 84 12 fe ff ff RSP: 0018:ffffc9000bb6f908 EFLAGS: 00010086 RAX: 0000000000000000 RBX: ffff8880751250a0 RCX: 0000000000000000 RDX: ffff8880245ed580 RSI: ffffffff815dbd88 RDI: fffff5200176df13 RBP: 00000000000017e2 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815d5b2e R11: 0000000000000000 R12: ffff8880245ee018 R13: ffff8880245ed580 R14: 0000000000040000 R15: 00000000000417e2 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0ce52186a9 CR3: 0000000072111000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire kernel/locking/lockdep.c:5625 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5590 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline] _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:368 [inline] lock_sock_nested+0x40/0x120 net/core/sock.c:3183 l2cap_sock_teardown_cb+0xa1/0x660 net/bluetooth/l2cap_sock.c:1528 l2cap_chan_del+0xbc/0xa80 net/bluetooth/l2cap_core.c:622 l2cap_chan_close+0x1b9/0xaf0 net/bluetooth/l2cap_core.c:825 l2cap_chan_timeout+0x17e/0x2f0 net/bluetooth/l2cap_core.c:436 process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295