BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 0 PID: 47 Comm: kworker/u5:0 Not tainted 6.1.15-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Workqueue: hci8 hci_tx_work Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 lookup_chain_cache_add kernel/locking/lockdep.c:3778 [inline] validate_chain kernel/locking/lockdep.c:3799 [inline] __lock_acquire+0x1b8c/0x764c kernel/locking/lockdep.c:5055 lock_acquire+0x2f8/0x8dc kernel/locking/lockdep.c:5668 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x6c/0xb4 kernel/locking/spinlock.c:162 skb_dequeue+0x38/0x144 net/core/skbuff.c:3401 hci_sched_acl_pkt net/bluetooth/hci_core.c:3587 [inline] hci_sched_acl net/bluetooth/hci_core.c:3677 [inline] hci_tx_work+0xb64/0x1850 net/bluetooth/hci_core.c:3776 process_one_work+0x848/0x16b4 kernel/workqueue.c:2289 worker_thread+0x8e4/0xfec kernel/workqueue.c:2436 kthread+0x24c/0x2d4 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 Bluetooth: hci8: command 0x0409 tx timeout Bluetooth: hci8: command 0x0419 tx timeout