BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. CPU: 1 UID: 0 PID: 7328 Comm: kworker/u8:11 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 get_partial_node+0x44/0x410 mm/slub.c:2866 get_partial mm/slub.c:2980 [inline] ___slab_alloc+0x650/0xeb4 mm/slub.c:3838 __slab_alloc+0x74/0xd0 mm/slub.c:3948 __slab_alloc_node mm/slub.c:4023 [inline] slab_alloc_node mm/slub.c:4184 [inline] kmem_cache_alloc_noprof+0x2e0/0x3e8 mm/slub.c:4203 btrfs_alloc_path+0x30/0x3c fs/btrfs/ctree.c:142 btrfs_csum_file_blocks+0x104/0x1228 fs/btrfs/file-item.c:1065 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