BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 1 PID: 43 Comm: kworker/u8:4 Not tainted 6.9.0-rc7-syzkaller-gfda5695d692c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: btrfs-endio-write btrfs_work_helper
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114
 dump_stack+0x1c/0x28 lib/dump_stack.c:123
 lookup_chain_cache_add kernel/locking/lockdep.c:3816 [inline]
 validate_chain kernel/locking/lockdep.c:3837 [inline]
 __lock_acquire+0x1c58/0x763c kernel/locking/lockdep.c:5137
 lock_acquire+0x248/0x73c kernel/locking/lockdep.c:5754
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x48/0x60 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 find_free_extent_unclustered fs/btrfs/extent-tree.c:3798 [inline]
 do_allocation_clustered fs/btrfs/extent-tree.c:3834 [inline]
 do_allocation fs/btrfs/extent-tree.c:4036 [inline]
 find_free_extent+0x2604/0x4bd4 fs/btrfs/extent-tree.c:4571
 btrfs_reserve_extent+0x35c/0x674 fs/btrfs/extent-tree.c:4725
 btrfs_alloc_tree_block+0x1b4/0x11e8 fs/btrfs/extent-tree.c:5181
 btrfs_force_cow_block+0x4c0/0x1a58 fs/btrfs/ctree.c:571
 btrfs_cow_block+0x318/0xa3c fs/btrfs/ctree.c:749
 btrfs_search_slot+0xba0/0x2a00
 btrfs_lookup_file_extent+0x124/0x1bc fs/btrfs/file-item.c:266
 btrfs_drop_extents+0x364/0x299c fs/btrfs/file.c:252
 insert_reserved_file_extent+0x2b4/0xa6c fs/btrfs/inode.c:2926
 insert_ordered_extent_file_extent+0x350/0x510 fs/btrfs/inode.c:3033
 btrfs_finish_one_ordered+0x6c4/0x13ec fs/btrfs/inode.c:3141
 btrfs_finish_ordered_io+0x124/0x138 fs/btrfs/inode.c:3285
 finish_ordered_fn+0x20/0xa8 fs/btrfs/ordered-data.c:302
 btrfs_work_helper+0x37c/0xda4 fs/btrfs/async-thread.c:314
 process_one_work+0x7b8/0x15d4 kernel/workqueue.c:3267
 process_scheduled_works kernel/workqueue.c:3348 [inline]
 worker_thread+0x938/0xef4 kernel/workqueue.c:3429
 kthread+0x288/0x310 kernel/kthread.c:388
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860