Bluetooth: hci67: unexpected cc 0x1003 length: 249 > 9
Bluetooth: hci67: unexpected cc 0x1001 length: 249 > 9
Bluetooth: hci67: unexpected cc 0x0c23 length: 249 > 4
Bluetooth: hci67: unexpected cc 0x0c38 length: 249 > 2
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 4863 Comm: kworker/u9:3 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: hci68 hci_power_on
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3855 [inline]
 validate_chain kernel/locking/lockdep.c:3876 [inline]
 __lock_acquire+0xf88/0x2f44 kernel/locking/lockdep.c:5237
 lock_acquire+0x140/0x368 kernel/locking/lockdep.c:5868
 _raw_spin_lock_nested+0x50/0x6c kernel/locking/spinlock.c:382
 raw_spin_rq_lock_nested+0x2c/0x44 kernel/sched/core.c:652
 raw_spin_rq_lock kernel/sched/sched.h:1624 [inline]
 rq_lock kernel/sched/sched.h:1968 [inline]
 __schedule+0x39c/0x2dcc kernel/sched/core.c:7064
 __schedule_loop kernel/sched/core.c:7268 [inline]
 schedule+0x140/0x218 kernel/sched/core.c:7283
 schedule_timeout+0x13c/0x28c kernel/time/sleep_timeout.c:99
 __hci_cmd_sync_sk+0x514/0xab8 net/bluetooth/hci_sync.c:176
 __hci_cmd_sync_status_sk+0x5c/0x170 net/bluetooth/hci_sync.c:263
 __hci_cmd_sync_status net/bluetooth/hci_sync.c:287 [inline]
 hci_reset_sync+0x58/0x84 net/bluetooth/hci_sync.c:3674
 hci_init1_sync net/bluetooth/hci_sync.c:3760 [inline]
 hci_init_sync net/bluetooth/hci_sync.c:4927 [inline]
 hci_dev_init_sync net/bluetooth/hci_sync.c:5119 [inline]
 hci_dev_open_sync+0xae8/0x1d50 net/bluetooth/hci_sync.c:5197
 hci_dev_do_open+0x34/0xb8 net/bluetooth/hci_core.c:431
 hci_power_on+0x138/0x570 net/bluetooth/hci_core.c:960
 process_one_work kernel/workqueue.c:3314 [inline]
 process_scheduled_works+0x79c/0x1098 kernel/workqueue.c:3397
 worker_thread+0x754/0xba0 kernel/workqueue.c:3478
 kthread+0x2f8/0x3c8 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842
Bluetooth: hci69: unexpected cc 0x1001 length: 249 > 9
Bluetooth: hci69: unexpected cc 0x0c23 length: 249 > 4
Bluetooth: hci69: unexpected cc 0x0c38 length: 249 > 2
Bluetooth: hci66: command tx timeout
Bluetooth: hci32: command 0x0406 tx timeout
Bluetooth: hci34: command 0x0406 tx timeout