BUG: spinlock bad magic on CPU#0, kworker/0:5/8983
 lock: 0xffff888075df3088, .magic: 0003003f, .owner: <none>/-1, .owner_cpu: 786434000
CPU: 0 PID: 8983 Comm: kworker/0:5 Not tainted 5.15.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events l2cap_chan_timeout
Call Trace:
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x45/0x59 lib/dump_stack.c:106
 debug_spin_lock_before kernel/locking/spinlock_debug.c:85 [inline]
 do_raw_spin_lock+0x216/0x2b0 kernel/locking/spinlock_debug.c:114
 spin_lock_bh include/linux/spinlock.h:368 [inline]
 lock_sock_nested+0x39/0xf0 net/core/sock.c:3183
 l2cap_sock_teardown_cb+0x90/0x590 net/bluetooth/l2cap_sock.c:1528
 l2cap_chan_del+0x9b/0x8f0 net/bluetooth/l2cap_core.c:622
 l2cap_chan_close+0x180/0x990 net/bluetooth/l2cap_core.c:825
 l2cap_chan_timeout+0x125/0x280 net/bluetooth/l2cap_core.c:436
 process_one_work+0x87f/0x1470 kernel/workqueue.c:2297
 worker_thread+0x598/0x1040 kernel/workqueue.c:2444
 kthread+0x38b/0x460 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295