Bluetooth: hci51: unexpected cc 0x1001 length: 249 > 9
Bluetooth: hci51: unexpected cc 0x0c23 length: 249 > 4
Bluetooth: hci51: unexpected cc 0x0c25 length: 249 > 3
Bluetooth: hci51: unexpected cc 0x0c38 length: 249 > 2
BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 PID: 4414 Comm: kworker/u5:2 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
Workqueue: hci51 hci_rx_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+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 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:3772 [inline]
 validate_chain kernel/locking/lockdep.c:3793 [inline]
 __lock_acquire+0x1b40/0x6544 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x644 kernel/locking/lockdep.c:5662
 fs_reclaim_acquire+0xc4/0x124 mm/page_alloc.c:4736
 might_alloc include/linux/sched/mm.h:271 [inline]
 slab_pre_alloc_hook mm/slab.h:710 [inline]
 slab_alloc_node mm/slub.c:3279 [inline]
 __kmem_cache_alloc_node+0x54/0x320 mm/slub.c:3398
 kmalloc_trace+0x48/0x94 mm/slab_common.c:1026
 kmalloc include/linux/slab.h:563 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 hci_conn_add+0xc4/0x1078 net/bluetooth/hci_conn.c:990
 hci_conn_request_evt+0x460/0x8c8 net/bluetooth/hci_event.c:3358
 hci_event_func net/bluetooth/hci_event.c:7415 [inline]
 hci_event_packet+0x6f4/0xf08 net/bluetooth/hci_event.c:7467
 hci_rx_work+0x324/0xaa0 net/bluetooth/hci_core.c:4083
 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292
 worker_thread+0x8c8/0xfbc kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850
Bluetooth: hci50: command 0x040f tx timeout
Bluetooth: hci49: command 0x0419 tx timeout
Bluetooth: hci50: command 0x0419 tx timeout
Bluetooth: hci51: command 0x041b tx timeout
Bluetooth: hci52: unexpected cc 0x0c03 length: 249 > 1
Bluetooth: hci52: unexpected cc 0x1003 length: 249 > 9
Bluetooth: hci52: unexpected cc 0x1001 length: 249 > 9
Bluetooth: hci52: unexpected cc 0x0c23 length: 249 > 4
Bluetooth: hci52: unexpected cc 0x0c25 length: 249 > 3
Bluetooth: hci52: unexpected cc 0x0c38 length: 249 > 2
Bluetooth: hci51: command 0x0419 tx timeout
Bluetooth: hci52: command 0x040f tx timeout
Bluetooth: hci54: unexpected cc 0x0c03 length: 249 > 1
Bluetooth: hci54: unexpected cc 0x1003 length: 249 > 9
Bluetooth: hci54: unexpected cc 0x1001 length: 249 > 9
Bluetooth: hci54: unexpected cc 0x0c23 length: 249 > 4
Bluetooth: hci54: unexpected cc 0x0c25 length: 249 > 3
Bluetooth: hci54: unexpected cc 0x0c38 length: 249 > 2