BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 1 UID: 0 PID: 974 Comm: kworker/u8:8 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 Workqueue: events_unbound btrfs_async_reclaim_data_space Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (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:3855 [inline] validate_chain kernel/locking/lockdep.c:3876 [inline] __lock_acquire+0xf9c/0x30a4 kernel/locking/lockdep.c:5237 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868 fs_reclaim_acquire+0xb8/0x118 mm/page_alloc.c:4251 might_alloc include/linux/sched/mm.h:318 [inline] slab_pre_alloc_hook mm/slub.c:4142 [inline] slab_alloc_node mm/slub.c:4220 [inline] kmem_cache_alloc_noprof+0x58/0x3e8 mm/slub.c:4247 btrfs_alloc_path+0x30/0x3c fs/btrfs/ctree.c:142 btrfs_start_dirty_block_groups+0x27c/0xe18 fs/btrfs/block-group.c:3413 btrfs_commit_transaction+0x2ac/0x2ce4 fs/btrfs/transaction.c:2244 btrfs_commit_current_transaction+0xac/0xdc fs/btrfs/transaction.c:2013 flush_space+0x424/0xb68 fs/btrfs/space-info.c:888 do_async_reclaim_data_space+0x274/0x4b8 fs/btrfs/space-info.c:1410 btrfs_async_reclaim_data_space+0x44/0x88 fs/btrfs/space-info.c:1458 process_one_work+0x7e8/0x155c kernel/workqueue.c:3236 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 bridge0: port 1(bridge_slave_0) entered blocking state bridge0: port 1(bridge_slave_0) entered forwarding state bridge0: port 2(bridge_slave_1) entered blocking state bridge0: port 2(bridge_slave_1) entered forwarding state