BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 0 PID: 1606 Comm: kworker/u4:4 Not tainted 6.1.24-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: btrfs-endio-write btrfs_work_helper
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 lookup_chain_cache_add kernel/locking/lockdep.c:3779 [inline]
 validate_chain kernel/locking/lockdep.c:3800 [inline]
 __lock_acquire+0x1b8c/0x764c kernel/locking/lockdep.c:5056
 lock_acquire+0x26c/0x7cc kernel/locking/lockdep.c:5669
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x6c/0xb4 kernel/locking/spinlock.c:162
 __debug_check_no_obj_freed lib/debugobjects.c:984 [inline]
 debug_check_no_obj_freed+0x14c/0x50c lib/debugobjects.c:1027
 slab_free_hook mm/slub.c:1699 [inline]
 slab_free_freelist_hook mm/slub.c:1750 [inline]
 slab_free mm/slub.c:3661 [inline]
 kmem_cache_free+0x29c/0x588 mm/slub.c:3683
 btrfs_find_space_for_alloc+0xb68/0xc7c fs/btrfs/free-space-cache.c:3115
 find_free_extent_unclustered fs/btrfs/extent-tree.c:3669 [inline]
 do_allocation_clustered fs/btrfs/extent-tree.c:3709 [inline]
 do_allocation fs/btrfs/extent-tree.c:3906 [inline]
 find_free_extent+0x234c/0x47a8 fs/btrfs/extent-tree.c:4418
 btrfs_reserve_extent+0x364/0x680 fs/btrfs/extent-tree.c:4567
 btrfs_alloc_tree_block+0x1b4/0x1478 fs/btrfs/extent-tree.c:4980
 __btrfs_cow_block+0x3f4/0x16f0 fs/btrfs/ctree.c:433
 btrfs_cow_block+0x354/0x7dc fs/btrfs/ctree.c:588
 push_leaf_left+0x2a0/0x400 fs/btrfs/ctree.c:3339
 split_leaf+0x394/0x1134 fs/btrfs/ctree.c:3534
 search_leaf fs/btrfs/ctree.c:1876 [inline]
 btrfs_search_slot+0x21fc/0x2948 fs/btrfs/ctree.c:2061
 btrfs_csum_file_blocks+0x3d0/0x1554 fs/btrfs/file-item.c:1068
 add_pending_csums fs/btrfs/inode.c:2784 [inline]
 btrfs_finish_ordered_io+0xed4/0x16e8 fs/btrfs/inode.c:3314
 finish_ordered_fn+0x20/0x30 fs/btrfs/ordered-data.c:280
 btrfs_work_helper+0x31c/0xd98 fs/btrfs/async-thread.c:280
 process_one_work+0x7ac/0x1404 kernel/workqueue.c:2289
 worker_thread+0x8e4/0xfec kernel/workqueue.c:2436
 kthread+0x24c/0x2d4 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860