BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 0 UID: 0 PID: 7627 Comm: syz-executor Not tainted 6.16.0-rc4-syzkaller-g3cd1604f930f #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:501 (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:3858 [inline]
 validate_chain kernel/locking/lockdep.c:3879 [inline]
 __lock_acquire+0xf9c/0x30a4 kernel/locking/lockdep.c:5240
 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5871
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162
 __debug_check_no_obj_freed lib/debugobjects.c:1088 [inline]
 debug_check_no_obj_freed+0x148/0x470 lib/debugobjects.c:1129
 slab_free_hook mm/slub.c:2312 [inline]
 slab_free mm/slub.c:4643 [inline]
 kmem_cache_free+0x124/0x550 mm/slub.c:4745
 btrfs_free_extent_state+0x184/0x38c fs/btrfs/extent-io-tree.c:181
 merge_prev_state fs/btrfs/extent-io-tree.c:352 [inline]
 merge_state+0x1e0/0x420 fs/btrfs/extent-io-tree.c:385
 insert_state_fast+0x1f4/0x25c fs/btrfs/extent-io-tree.c:485
 set_extent_bit+0x1594/0x1cd0 fs/btrfs/extent-io-tree.c:1102
 btrfs_set_extent_bit+0x54/0x6c fs/btrfs/extent-io-tree.c:1296
 btrfs_init_new_buffer fs/btrfs/extent-tree.c:5121 [inline]
 btrfs_alloc_tree_block+0x76c/0xeb0 fs/btrfs/extent-tree.c:5170
 btrfs_force_cow_block+0x408/0x1bb8 fs/btrfs/ctree.c:506
 btrfs_cow_block+0x3f8/0x838 fs/btrfs/ctree.c:688
 btrfs_search_slot+0x9c0/0x221c fs/btrfs/ctree.c:2088
 btrfs_insert_empty_items+0xa4/0x17c fs/btrfs/ctree.c:4287
 btrfs_insert_delayed_item fs/btrfs/delayed-inode.c:736 [inline]
 btrfs_insert_delayed_items fs/btrfs/delayed-inode.c:814 [inline]
 __btrfs_commit_inode_delayed_items+0x870/0x172c fs/btrfs/delayed-inode.c:1103
 __btrfs_run_delayed_items+0x1ac/0x460 fs/btrfs/delayed-inode.c:1148
 btrfs_run_delayed_items+0x24/0x34 fs/btrfs/delayed-inode.c:1185
 btrfs_commit_transaction+0x87c/0x2b44 fs/btrfs/transaction.c:2323
 btrfs_sync_fs+0x504/0x9a4 fs/btrfs/super.c:1036
 sync_filesystem+0x1a0/0x218 fs/sync.c:66
 generic_shutdown_super+0x70/0x2b8 fs/super.c:622
 kill_anon_super+0x4c/0x7c fs/super.c:1282
 btrfs_kill_super+0x40/0x58 fs/btrfs/super.c:2095
 deactivate_locked_super+0xc4/0x12c fs/super.c:474
 deactivate_super+0xe0/0x100 fs/super.c:507
 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1417
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1424
 task_work_run+0x1dc/0x260 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 do_notify_resume+0x174/0x1f4 arch/arm64/kernel/entry-common.c:155
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:173 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:182 [inline]
 el0_svc+0xb8/0x180 arch/arm64/kernel/entry-common.c:880
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
BTRFS info (device loop4): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf