syzbot

BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 0 UID: 0 PID: 34 Comm: kworker/u8:2 Not tainted 6.12.0-rc7-syzkaller-g887407160d72 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: btrfs-qgroup-rescan btrfs_work_helper
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:484 (C)
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 lookup_chain_cache_add kernel/locking/lockdep.c:3851 [inline]
 validate_chain kernel/locking/lockdep.c:3872 [inline]
 __lock_acquire+0x1fb8/0x77c8 kernel/locking/lockdep.c:5202
 lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5825
 __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]
 __set_extent_bit+0x224/0x1b50 fs/btrfs/extent-io-tree.c:1088
 set_extent_bit+0x54/0x6c fs/btrfs/extent-io-tree.c:1285
 btrfs_init_new_buffer fs/btrfs/extent-tree.c:5106 [inline]
 btrfs_alloc_tree_block+0x974/0x12d4 fs/btrfs/extent-tree.c:5155
 btrfs_force_cow_block+0x4e4/0x1c9c fs/btrfs/ctree.c:573
 btrfs_cow_block+0x318/0xa28 fs/btrfs/ctree.c:754
 btrfs_search_slot+0xba0/0x2a08
 update_qgroup_info_item fs/btrfs/qgroup.c:894 [inline]
 btrfs_run_qgroups+0x380/0x888 fs/btrfs/qgroup.c:3147
 commit_cowonly_roots+0x1ec/0x750 fs/btrfs/transaction.c:1350
 btrfs_commit_transaction+0x1170/0x2ba4 fs/btrfs/transaction.c:2447
 btrfs_qgroup_rescan_worker+0x1370/0x1750 fs/btrfs/qgroup.c:3865
 btrfs_work_helper+0x340/0xd28 fs/btrfs/async-thread.c:314
 process_one_work+0x7bc/0x1600 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x97c/0xeec kernel/workqueue.c:3391
 kthread+0x288/0x310 kernel/kthread.c:389
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862
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)
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)