BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 8513 Comm: syz.8.406 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
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+0x140/0x2e0 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
 update_cfs_rq_load_avg kernel/sched/fair.c:4547 [inline]
 update_load_avg+0x198/0x1530 kernel/sched/fair.c:4706
 enqueue_entity kernel/sched/fair.c:5239 [inline]
 enqueue_task_fair+0x254/0x1c4c kernel/sched/fair.c:6932
 enqueue_task+0xb4/0x380 kernel/sched/core.c:2094
 activate_task kernel/sched/core.c:2135 [inline]
 ttwu_do_activate+0x194/0x754 kernel/sched/core.c:3631
 ttwu_queue kernel/sched/core.c:3894 [inline]
 try_to_wake_up+0x4c4/0xe24 kernel/sched/core.c:4218
 wake_up_process+0x18/0x24 kernel/sched/core.c:4349
 kick_pool+0x3e0/0x58c kernel/workqueue.c:1279
 __queue_work+0xd90/0x121c kernel/workqueue.c:2336
 queue_work_on+0xdc/0x18c kernel/workqueue.c:2386
 queue_work include/linux/workqueue.h:669 [inline]
 loop_queue_work drivers/block/loop.c:863 [inline]
 loop_queue_rq+0x944/0xaa8 drivers/block/loop.c:1890
 __blk_mq_issue_directly block/blk-mq.c:2715 [inline]
 blk_mq_request_issue_directly+0x2c0/0x560 block/blk-mq.c:2802
 blk_mq_issue_direct+0x254/0x558 block/blk-mq.c:2823
 blk_mq_dispatch_queue_requests+0x568/0x674 block/blk-mq.c:2898
 blk_mq_flush_plug_list+0x370/0x488 block/blk-mq.c:2981
 __blk_flush_plug+0x330/0x408 block/blk-core.c:1225
 blk_finish_plug block/blk-core.c:1252 [inline]
 __submit_bio+0x3f4/0x4d8 block/blk-core.c:651
 __submit_bio_noacct_mq block/blk-core.c:724 [inline]
 submit_bio_noacct_nocheck+0x274/0x990 block/blk-core.c:755
 submit_bio_noacct+0xdc0/0x186c block/blk-core.c:879
 submit_bio+0x3b4/0x550 block/blk-core.c:921
 write_dev_supers fs/btrfs/disk-io.c:3790 [inline]
 write_all_supers+0x2198/0x40d4 fs/btrfs/disk-io.c:4060
 btrfs_commit_transaction+0x1a34/0x2d30 fs/btrfs/transaction.c:2559
 insert_balance_item+0x850/0x115c fs/btrfs/volumes.c:3682
 btrfs_balance+0x68c/0xf58 fs/btrfs/volumes.c:4549
 btrfs_ioctl_balance+0x350/0x550 fs/btrfs/ioctl.c:3525
 btrfs_ioctl+0xb04/0xc3c fs/btrfs/ioctl.c:5276
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:583
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
BTRFS info (device loop8): balance: start 
BTRFS info (device loop8): balance: ended with status: 0