BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. CPU: 0 UID: 0 PID: 690 Comm: kworker/u8:5 Not tainted 6.16.0-rc7-syzkaller-g82af5ea7c611 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/18/2025 Workqueue: btrfs-qgroup-rescan 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_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162 percpu_counter_add_batch+0x268/0x394 lib/percpu_counter.c:101 lock_extent_buffer_for_io+0x4a8/0x688 fs/btrfs/extent_io.c:1790 btree_write_cache_pages+0x810/0xe2c fs/btrfs/extent_io.c:2195 btree_writepages+0x70/0x19c fs/btrfs/disk-io.c:512 do_writepages+0x270/0x468 mm/page-writeback.c:2636 filemap_fdatawrite_wbc mm/filemap.c:386 [inline] __filemap_fdatawrite_range mm/filemap.c:419 [inline] filemap_fdatawrite_range+0x14c/0x1f0 mm/filemap.c:437 btrfs_write_marked_extents+0x174/0x28c fs/btrfs/transaction.c:1157 btrfs_write_and_wait_transaction+0xdc/0x1e8 fs/btrfs/transaction.c:1264 btrfs_commit_transaction+0x19dc/0x2b44 fs/btrfs/transaction.c:2531 btrfs_qgroup_rescan_worker+0x1164/0x150c fs/btrfs/qgroup.c:3852 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:844 BTRFS info (device loop0): qgroup scan completed (inconsistency flag cleared) BTRFS info (device loop0): qgroup scan completed (inconsistency flag cleared) BTRFS info (device loop0): qgroup scan completed (inconsistency flag cleared) BTRFS info (device loop0): qgroup scan completed (inconsistency flag cleared)