BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 1 PID: 6690 Comm: kworker/u4:8 Not tainted 6.6.0-rc3-syzkaller-gbf6547d8715b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Workqueue: btrfs-endio-write btrfs_work_helper
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233
 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 dump_stack+0x1c/0x28 lib/dump_stack.c:113
 lookup_chain_cache_add kernel/locking/lockdep.c:3815 [inline]
 validate_chain kernel/locking/lockdep.c:3836 [inline]
 __lock_acquire+0x1c60/0x75e8 kernel/locking/lockdep.c:5136
 lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5753
 __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:1020 [inline]
 debug_check_no_obj_freed+0x14c/0x534 lib/debugobjects.c:1063
 slab_free_hook mm/slub.c:1775 [inline]
 slab_free_freelist_hook mm/slub.c:1826 [inline]
 slab_free mm/slub.c:3809 [inline]
 kmem_cache_free+0x290/0x56c mm/slub.c:3831
 free_extent_state+0x174/0x3bc fs/btrfs/extent-io-tree.c:174
 merge_state+0x1dc/0x3fc fs/btrfs/extent-io-tree.c:354
 insert_state_fast+0x1c4/0x220 fs/btrfs/extent-io-tree.c:440
 __set_extent_bit+0x11a4/0x195c fs/btrfs/extent-io-tree.c:1034
 set_extent_bit+0x54/0x6c fs/btrfs/extent-io-tree.c:1208
 btrfs_alloc_tree_block+0xae4/0x1444 fs/btrfs/extent-tree.c:4934
 __btrfs_cow_block+0x3f4/0x1988 fs/btrfs/ctree.c:546
 btrfs_cow_block+0x354/0x744 fs/btrfs/ctree.c:712
 push_leaf_left+0x2bc/0x4ec fs/btrfs/ctree.c:3583
 split_leaf+0x394/0x119c fs/btrfs/ctree.c:3779
 search_leaf fs/btrfs/ctree.c:2043 [inline]
 btrfs_search_slot+0x220c/0x29d8 fs/btrfs/ctree.c:2230
 btrfs_insert_empty_items+0xa4/0x178 fs/btrfs/ctree.c:4376
 btrfs_insert_empty_item fs/btrfs/ctree.h:636 [inline]
 insert_reserved_file_extent+0x52c/0xa7c fs/btrfs/inode.c:2904
 insert_ordered_extent_file_extent fs/btrfs/inode.c:3002 [inline]
 btrfs_finish_one_ordered+0xd78/0x1770 fs/btrfs/inode.c:3106
 btrfs_finish_ordered_io+0xf8/0x10c fs/btrfs/inode.c:3229
 finish_ordered_fn+0x20/0xa8 fs/btrfs/ordered-data.c:303
 btrfs_work_helper+0x340/0x1504 fs/btrfs/async-thread.c:314
 process_one_work+0x694/0x1204 kernel/workqueue.c:2630
 process_scheduled_works kernel/workqueue.c:2703 [inline]
 worker_thread+0x938/0xef4 kernel/workqueue.c:2784
 kthread+0x288/0x310 kernel/kthread.c:388
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:853