BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 4707 Comm: kworker/u9:1 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: hci2 hci_cmd_sync_work
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_irqsave include/linux/spinlock_api_smp.h:132 [inline]
 _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:166
 __debug_check_no_obj_freed lib/debugobjects.c:1115 [inline]
 debug_check_no_obj_freed+0xb4/0x3c0 lib/debugobjects.c:1156
 __free_pages_prepare mm/page_alloc.c:1404 [inline]
 __free_frozen_pages+0x4c4/0xbd4 mm/page_alloc.c:2938
 free_frozen_pages+0x14/0x20 mm/page_alloc.c:2976
 __free_slab+0x11c/0x1b4 mm/slub.c:3541
 free_slab+0x2c/0x154 mm/slub.c:3575
 discard_slab+0x48/0x90 mm/slub.c:3581
 __slab_free+0x1a8/0x1d8 mm/slub.c:5613
 ___cache_free+0x80/0x94 mm/slub.c:6323
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0xb4/0x120 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x118/0x124 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x2c/0x88 mm/kasan/common.c:350
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4570 [inline]
 slab_alloc_node mm/slub.c:4899 [inline]
 kmem_cache_alloc_node_noprof+0x2cc/0x6c8 mm/slub.c:4951
 __alloc_skb+0x1f0/0x5f8 net/core/skbuff.c:702
 alloc_skb include/linux/skbuff.h:1385 [inline]
 mgmt_alloc_skb+0x38/0x110 net/bluetooth/mgmt_util.c:64
 mgmt_send_event+0x4c/0xb8 net/bluetooth/mgmt_util.c:116
 mgmt_event net/bluetooth/mgmt.c:340 [inline]
 mgmt_connect_failed+0x1dc/0x2bc net/bluetooth/mgmt.c:9917
 hci_conn_failed+0xd0/0x334 net/bluetooth/hci_conn.c:1400
 hci_abort_conn_sync+0x5a4/0x938 net/bluetooth/hci_sync.c:5778
 abort_conn_sync+0x58/0x88 net/bluetooth/hci_conn.c:3166
 hci_cmd_sync_work+0x1b4/0x37c net/bluetooth/hci_sync.c:332
 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