syzbot

BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
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: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_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162
 lock_extent_buffer_for_io+0x27c/0x694 fs/btrfs/extent_io.c:1915
 btree_write_cache_pages+0x9c0/0xe2c fs/btrfs/extent_io.c:2333
 btree_writepages+0x70/0x19c fs/btrfs/disk-io.c:512
 do_writepages+0x270/0x468 mm/page-writeback.c:2604
 filemap_fdatawrite_wbc mm/filemap.c:389 [inline]
 __filemap_fdatawrite_range mm/filemap.c:422 [inline]
 filemap_fdatawrite_range+0x154/0x1fc mm/filemap.c:440
 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+0x19fc/0x2ce4 fs/btrfs/transaction.c:2533
 btrfs_qgroup_rescan_worker+0x12c8/0x19f8 fs/btrfs/qgroup.c:3834
 btrfs_work_helper+0x380/0xca8 fs/btrfs/async-thread.c:312
 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
BTRFS info (device loop4): qgroup scan completed (inconsistency flag cleared)
BTRFS info (device loop4): qgroup scan completed (inconsistency flag cleared)
BTRFS info (device loop2): qgroup scan completed (inconsistency flag cleared)
BTRFS info (device loop0): qgroup scan completed (inconsistency flag cleared)
BTRFS info (device loop4): qgroup scan completed (inconsistency flag cleared)
BTRFS info (device loop2): qgroup scan completed (inconsistency flag cleared)
BTRFS info (device loop4): qgroup scan completed (inconsistency flag cleared)
BTRFS info (device loop1): qgroup scan completed (inconsistency flag cleared)