BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 0 PID: 1777 Comm: kworker/u4:5 Not tainted 6.1.148-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
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+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3772 [inline]
 validate_chain kernel/locking/lockdep.c:3793 [inline]
 __lock_acquire+0x1b40/0x6544 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x644 kernel/locking/lockdep.c:5662
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x54/0x6c kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 btrfs_add_reserved_bytes+0x68/0x6b0 fs/btrfs/block-group.c:3524
 find_free_extent+0x2f9c/0x46b0 fs/btrfs/extent-tree.c:4501
 btrfs_reserve_extent+0x230/0x4fc fs/btrfs/extent-tree.c:4619
 btrfs_alloc_tree_block+0x190/0x1158 fs/btrfs/extent-tree.c:5032
 split_leaf+0x7ec/0x1074 fs/btrfs/ctree.c:3667
 search_leaf fs/btrfs/ctree.c:1925 [inline]
 btrfs_search_slot+0x1d90/0x2364 fs/btrfs/ctree.c:2116
 btrfs_csum_file_blocks+0x474/0x11ac fs/btrfs/file-item.c:1071
 add_pending_csums fs/btrfs/inode.c:2788 [inline]
 btrfs_finish_ordered_io+0xb28/0x162c fs/btrfs/inode.c:3321
 finish_ordered_fn+0x20/0x30 fs/btrfs/ordered-data.c:281
 btrfs_work_helper+0x30c/0xccc fs/btrfs/async-thread.c:280
 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292
 worker_thread+0x8c8/0xfbc kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:849