BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 0 PID: 1965 Comm: kworker/u4:8 Not tainted 6.6.0-rc4-syzkaller-g19af4a4ed414 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
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
 btrfs_find_space_for_alloc+0xbb4/0xd0c fs/btrfs/free-space-cache.c:3125
 find_free_extent_unclustered fs/btrfs/extent-tree.c:3626 [inline]
 do_allocation_clustered fs/btrfs/extent-tree.c:3649 [inline]
 do_allocation fs/btrfs/extent-tree.c:3851 [inline]
 find_free_extent+0x25e0/0x4eb4 fs/btrfs/extent-tree.c:4362
 btrfs_reserve_extent+0x35c/0x674 fs/btrfs/extent-tree.c:4516
 btrfs_alloc_tree_block+0x1b0/0x1444 fs/btrfs/extent-tree.c:4931
 __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]
 btrfs_csum_file_blocks+0xbcc/0x1554 fs/btrfs/file-item.c:1227
 add_pending_csums fs/btrfs/inode.c:2601 [inline]
 btrfs_finish_one_ordered+0xf1c/0x1770 fs/btrfs/inode.c:3121
 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:857