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Subject[syzbot] INFO: trying to register non-static key in sco_sock_timeout

syzbot found the following issue on:

HEAD commit: 91265a6da44d Add linux-next specific files for 20220303
git tree: linux-next
console output:
kernel config:
dashboard link:
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:

INFO: trying to register non-static key.
The code is fine but needs lockdep annotation, or maybe
you didn't initialize this object before use?
turning off the locking correctness validator.
CPU: 0 PID: 21810 Comm: kworker/0:3 Not tainted 5.17.0-rc6-next-20220303-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events sco_sock_timeout
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
assign_lock_key kernel/locking/lockdep.c:980 [inline]
register_lock_class+0xf04/0x11b0 kernel/locking/lockdep.c:1293
__lock_acquire+0x10a/0x56c0 kernel/locking/lockdep.c:4939
lock_acquire kernel/locking/lockdep.c:5672 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5637
lock_sock_nested+0x36/0xf0 net/core/sock.c:3312
lock_sock include/net/sock.h:1682 [inline]
sco_sock_timeout+0xd2/0x290 net/bluetooth/sco.c:97
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

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