BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 1 UID: 0 PID: 42 Comm: kworker/u8:3 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 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 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x48/0x60 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] btrfs_block_rsv_add_bytes fs/btrfs/block-rsv.c:314 [inline] btrfs_block_rsv_add+0xa0/0x108 fs/btrfs/block-rsv.c:224 reserve_chunk_space+0x1e8/0x41c fs/btrfs/block-group.c:4362 check_system_chunk fs/btrfs/block-group.c:4384 [inline] do_chunk_alloc fs/btrfs/block-group.c:3945 [inline] btrfs_chunk_alloc+0x808/0x14f0 fs/btrfs/block-group.c:4248 flush_space+0x2f0/0xb68 fs/btrfs/space-info.c:861 do_async_reclaim_data_space+0xf8/0x4b8 fs/btrfs/space-info.c:1394 btrfs_async_reclaim_data_space+0x44/0x88 fs/btrfs/space-info.c:1458 process_one_work+0x7e8/0x155c kernel/workqueue.c:3263 process_scheduled_works kernel/workqueue.c:3346 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3427 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844 bond1: (slave ip6gretap1): failed to get link speed/duplex bond1: (slave ip6gretap1): failed to get link speed/duplex bond1: (slave ip6gretap1): failed to get link speed/duplex