BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. CPU: 0 PID: 503 Comm: kworker/u4:8 Not tainted 6.7.0-rc6-syzkaller-gaafe7ad77b91 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Workqueue: btrfs-endio-write btrfs_work_helper Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298 __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:3816 [inline] validate_chain kernel/locking/lockdep.c:3837 [inline] __lock_acquire+0x1c58/0x763c kernel/locking/lockdep.c:5137 reacquire_held_locks+0x234/0x454 kernel/locking/lockdep.c:5279 __lock_release kernel/locking/lockdep.c:5468 [inline] lock_release+0x330/0x9ac kernel/locking/lockdep.c:5774 up_write+0x88/0x760 kernel/locking/rwsem.c:1631 btrfs_tree_unlock+0xdc/0x2c8 fs/btrfs/locking.c:227 btrfs_force_cow_block+0xeb0/0x1a30 fs/btrfs/ctree.c:650 btrfs_cow_block+0x314/0xa0c fs/btrfs/ctree.c:741 btrfs_search_slot+0xb8c/0x29d8 btrfs_lookup_file_extent+0x124/0x1bc fs/btrfs/file-item.c:270 btrfs_drop_extents+0x360/0x2c50 fs/btrfs/file.c:251 insert_reserved_file_extent+0x2b4/0xa6c fs/btrfs/inode.c:2898 insert_ordered_extent_file_extent+0x350/0x510 fs/btrfs/inode.c:3005 btrfs_finish_one_ordered+0x6a4/0x1298 fs/btrfs/inode.c:3113 btrfs_finish_ordered_io+0x124/0x138 fs/btrfs/inode.c:3237 finish_ordered_fn+0x20/0xa8 fs/btrfs/ordered-data.c:303 btrfs_work_helper+0x358/0x14f8 fs/btrfs/async-thread.c:315 process_one_work+0x694/0x1204 kernel/workqueue.c:2627 process_scheduled_works kernel/workqueue.c:2700 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:2781 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:857