INFO: trying to register non-static key in hci_uart_send

INFO: trying to register non-static key in hci_uart_send_frame (3)
Status: upstream: reported on 2021/11/01 05:00
Reported-by: syzbot+944c82cd12dd1db5b05f@syzkaller.appspotmail.com
First crash: 39d, last: 3d16h

similar bugs (3):
Kernel	Title	Count	Last	Reported	Patched	Status
linux-4.19	INFO: trying to register non-static key in hci_uart_send_frame	1	745d	745d	0/1	auto-closed as invalid on 2020/03/21 04:06
upstream	INFO: trying to register non-static key in hci_uart_send_frame	2	963d	1012d	0/22	auto-closed as invalid on 2019/10/15 09:18
upstream	INFO: trying to register non-static key in hci_uart_send_frame (2)	1	646d	644d	0/22	auto-closed as invalid on 2020/06/28 09:21

Sample crash report:

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: 1 PID: 150 Comm: kworker/u5:0 Not tainted 5.15.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: hci7 hci_cmd_work
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:939 [inline]
 register_lock_class+0xf79/0x10c0 kernel/locking/lockdep.c:1251
 __lock_acquire+0x105/0x54a0 kernel/locking/lockdep.c:4894
 lock_acquire kernel/locking/lockdep.c:5625 [inline]
 lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5590
 percpu_down_read include/linux/percpu-rwsem.h:51 [inline]
 hci_uart_send_frame+0x8e/0x6c0 drivers/bluetooth/hci_ldisc.c:279
 hci_send_frame+0x1c0/0x380 net/bluetooth/hci_core.c:4244
 hci_cmd_work+0x202/0x390 net/bluetooth/hci_core.c:5177
 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
Bluetooth: hci6: sending frame failed (-49)
Bluetooth: hci6: sending frame failed (-49)

Crashes (2):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-kasan-gce-selinux-root	2021/10/28 04:58	upstream	1fc596a56b33	be531bb4	.config	log	report			info	INFO: trying to register non-static key in hci_uart_send_frame
ci-upstream-linux-next-kasan-gce-root	2021/12/03 09:44	linux-next	f81e94e91878	61f86278	.config	log	report			info	INFO: trying to register non-static key in hci_uart_send_frame