BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 1 UID: 0 PID: 5990 Comm: kworker/u9:1 Not tainted 6.12.0-syzkaller-g7b1d1d4cfac0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: hci61 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:484 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 lookup_chain_cache_add kernel/locking/lockdep.c:3851 [inline] validate_chain kernel/locking/lockdep.c:3872 [inline] __lock_acquire+0x1fb8/0x77c8 kernel/locking/lockdep.c:5202 lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5825 down_write+0x50/0xc0 kernel/locking/rwsem.c:1577 kernfs_link_sibling+0x2a4/0x3fc fs/kernfs/dir.c:386 kernfs_add_one+0x268/0x714 fs/kernfs/dir.c:795 kernfs_create_dir_ns+0xd4/0x12c fs/kernfs/dir.c:1071 sysfs_create_dir_ns+0x150/0x318 fs/sysfs/dir.c:59 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x598/0xb04 lib/kobject.c:240 kobject_add_varg lib/kobject.c:374 [inline] kobject_add+0x14c/0x224 lib/kobject.c:426 device_add+0x3a0/0xa6c drivers/base/core.c:3610 hci_conn_add_sysfs+0xc4/0x1cc net/bluetooth/hci_sysfs.c:58 hci_conn_complete_evt+0x720/0x10b8 net/bluetooth/hci_event.c:3147 hci_event_func net/bluetooth/hci_event.c:7443 [inline] hci_event_packet+0x8dc/0x106c net/bluetooth/hci_event.c:7495 hci_rx_work+0x318/0xa80 net/bluetooth/hci_core.c:4029 process_one_work+0x7bc/0x1600 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x97c/0xeec kernel/workqueue.c:3391 kthread+0x288/0x310 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 Bluetooth: hci62: unexpected cc 0x0c03 length: 249 > 1 Bluetooth: hci62: unexpected cc 0x1003 length: 249 > 9 Bluetooth: hci62: unexpected cc 0x1001 length: 249 > 9 Bluetooth: hci61: command tx timeout Bluetooth: hci62: unexpected cc 0x0c23 length: 249 > 4 Bluetooth: hci62: unexpected cc 0x0c25 length: 249 > 3 Bluetooth: hci62: unexpected cc 0x0c38 length: 249 > 2 Bluetooth: hci60: command tx timeout Bluetooth: hci62: command tx timeout Bluetooth: hci63: unexpected cc 0x0c03 length: 249 > 1 Bluetooth: hci63: unexpected cc 0x1003 length: 249 > 9 Bluetooth: hci63: unexpected cc 0x1001 length: 249 > 9 Bluetooth: hci63: unexpected cc 0x0c23 length: 249 > 4 Bluetooth: hci63: unexpected cc 0x0c25 length: 249 > 3 Bluetooth: hci63: unexpected cc 0x0c38 length: 249 > 2 Bluetooth: hci63: command tx timeout Bluetooth: hci64: command tx timeout Bluetooth: hci62: command tx timeout Bluetooth: hci63: command tx timeout Bluetooth: hci64: command tx timeout