BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. CPU: 0 UID: 0 PID: 321 Comm: kworker/u8:7 Not tainted 6.16.0-rc5-syzkaller-gec4801305969 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: btrfs-endio-write btrfs_work_helper 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:3858 [inline] validate_chain kernel/locking/lockdep.c:3879 [inline] __lock_acquire+0xf9c/0x30a4 kernel/locking/lockdep.c:5240 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5871 __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] xa_cmpxchg include/linux/xarray.h:698 [inline] xa_reserve include/linux/xarray.h:1088 [inline] add_delayed_ref+0x1cc/0x199c fs/btrfs/delayed-ref.c:1029 btrfs_add_delayed_tree_ref+0x94/0x148 fs/btrfs/delayed-ref.c:1094 btrfs_alloc_tree_block+0x9e0/0xeb0 fs/btrfs/extent-tree.c:5216 btrfs_force_cow_block+0x408/0x1bb8 fs/btrfs/ctree.c:506 btrfs_cow_block+0x3f8/0x838 fs/btrfs/ctree.c:688 btrfs_search_slot+0x9c0/0x221c fs/btrfs/ctree.c:2088 btrfs_lookup_csum+0x114/0x3e0 fs/btrfs/file-item.c:217 btrfs_csum_file_blocks+0x20c/0x1244 fs/btrfs/file-item.c:1076 add_pending_csums fs/btrfs/inode.c:2648 [inline] btrfs_finish_one_ordered+0xa6c/0x17b4 fs/btrfs/inode.c:3201 btrfs_finish_ordered_io+0x120/0x134 fs/btrfs/inode.c:3323 finish_ordered_fn+0x20/0x30 fs/btrfs/ordered-data.c:347 btrfs_work_helper+0x380/0xca8 fs/btrfs/async-thread.c:312 process_one_work+0x7e8/0x155c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3402 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:843 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 wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50