INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 0 PID: 15395 Comm: syz-executor.2 Not tainted 5.11.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x183/0x22e lib/dump_stack.c:120
 register_lock_class+0xe94/0x1410 kernel/locking/lockdep.c:934
 __lock_acquire+0x173/0x5e40 kernel/locking/lockdep.c:4711
 lock_acquire+0x174/0x6c0 kernel/locking/lockdep.c:5437
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xb3/0x100 kernel/locking/spinlock.c:159
 skb_dequeue net/core/skbuff.c:3052 [inline]
 skb_queue_purge+0x2e/0x1c0 net/core/skbuff.c:3090
 l2cap_conn_del+0x406/0x650 net/bluetooth/l2cap_core.c:1896
 hci_disconn_cfm include/net/bluetooth/hci_core.h:1462 [inline]
 hci_conn_hash_flush+0x112/0x240 net/bluetooth/hci_conn.c:1565
 hci_dev_do_close+0xa04/0xfe0 net/bluetooth/hci_core.c:1776
 hci_rfkill_set_block+0x10f/0x180 net/bluetooth/hci_core.c:2215
 rfkill_set_block+0x1f1/0x440 net/rfkill/core.c:343
 rfkill_fop_write+0x594/0x750 net/rfkill/core.c:1267
 vfs_write+0x289/0xc90 fs/read_write.c:603
 ksys_write+0x171/0x2a0 fs/read_write.c:658
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e219
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f06f7f99c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219
RDX: 0000000000000008 RSI: 0000000020000080 RDI: 0000000000000003
RBP: 000000000119c110 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c0dc
R13: 00007ffdf82eaaff R14: 00007f06f7f9a9c0 R15: 000000000119c0dc