BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. CPU: 0 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted 6.15.0-rc7-syzkaller-g187899f4124a #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: btrfs-endio-write btrfs_work_helper Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 add_chain_cache kernel/locking/lockdep.c:-1 [inline] lookup_chain_cache_add kernel/locking/lockdep.c:3856 [inline] validate_chain kernel/locking/lockdep.c:3877 [inline] __lock_acquire+0xf50/0x3058 kernel/locking/lockdep.c:5235 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5866 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162 __folio_mark_dirty+0x44/0xca0 mm/page-writeback.c:2763 filemap_dirty_folio+0xe8/0x19c mm/page-writeback.c:2797 folio_mark_dirty+0xf0/0x154 mm/page-writeback.c:2874 btrfs_meta_folio_set_dirty+0x20/0x30 fs/btrfs/subpage.c:654 set_extent_buffer_dirty+0x12c/0x3c8 fs/btrfs/extent_io.c:3590 btrfs_mark_buffer_dirty+0x1a4/0x33c fs/btrfs/disk-io.c:4518 btrfs_force_cow_block+0xcf8/0x1bb8 fs/btrfs/ctree.c:595 btrfs_cow_block+0x3f8/0x838 fs/btrfs/ctree.c:688 btrfs_search_slot+0x9c0/0x21f0 fs/btrfs/ctree.c:2088 btrfs_lookup_csum+0x114/0x3e0 fs/btrfs/file-item.c:217 btrfs_csum_file_blocks+0x1f8/0x1228 fs/btrfs/file-item.c:1076 add_pending_csums fs/btrfs/inode.c:2666 [inline] btrfs_finish_one_ordered+0xa78/0x17f8 fs/btrfs/inode.c:3219 btrfs_finish_ordered_io+0x120/0x134 fs/btrfs/inode.c:3341 finish_ordered_fn+0x20/0x30 fs/btrfs/ordered-data.c:331 btrfs_work_helper+0x380/0xca8 fs/btrfs/async-thread.c:313 process_one_work+0x7e8/0x156c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847