Bluetooth: hci8: unexpected cc 0x1001 length: 249 > 9
Bluetooth: hci8: unexpected cc 0x0c23 length: 249 > 4
Bluetooth: hci8: unexpected cc 0x0c25 length: 249 > 3
Bluetooth: hci8: unexpected cc 0x0c38 length: 249 > 2
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 4335 Comm: kworker/u5:3 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026
Workqueue: hci9 hci_power_on
Call trace:
 dump_backtrace+0x1c4/0x1f0 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3777 [inline]
 validate_chain kernel/locking/lockdep.c:3798 [inline]
 __lock_acquire+0x1864/0x6634 kernel/locking/lockdep.c:5063
 lock_acquire+0x20c/0x638 kernel/locking/lockdep.c:5676
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x6c/0xb0 kernel/locking/spinlock.c:162
 prepare_to_wait_event+0x3c/0x3a8 kernel/sched/wait.c:310
 __hci_cmd_sync_sk+0x61c/0xd50 net/bluetooth/hci_sync.c:172
 __hci_cmd_sync_status_sk net/bluetooth/hci_sync.c:259 [inline]
 __hci_cmd_sync_status net/bluetooth/hci_sync.c:283 [inline]
 hci_reset_sync+0x5c/0x164 net/bluetooth/hci_sync.c:3601
 hci_init1_sync net/bluetooth/hci_sync.c:3736 [inline]
 hci_init_sync net/bluetooth/hci_sync.c:4850 [inline]
 hci_dev_init_sync net/bluetooth/hci_sync.c:5041 [inline]
 hci_dev_open_sync+0xe18/0x3020 net/bluetooth/hci_sync.c:5121
 hci_dev_do_open net/bluetooth/hci_core.c:457 [inline]
 hci_power_on+0x14c/0x64c net/bluetooth/hci_core.c:963
 process_one_work+0x7e4/0x13bc kernel/workqueue.c:2292
 worker_thread+0x8cc/0xfe8 kernel/workqueue.c:2439
 kthread+0x254/0x2e0 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850
Bluetooth: hci6: command 0x0409 tx timeout
Bluetooth: hci7: command 0x0409 tx timeout
Bluetooth: hci9: command 0x0409 tx timeout
Bluetooth: hci5: command 0x040f tx timeout
Bluetooth: hci8: command 0x041b tx timeout
Bluetooth: hci6: command 0x040f tx timeout
Bluetooth: hci7: command 0x040f tx timeout
Bluetooth: hci9: command 0x040f tx timeout