BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. CPU: 0 UID: 0 PID: 11 Comm: kworker/0:0H Not tainted 6.16.0-rc6-syzkaller-gaaef6f251176 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: kblockd blk_mq_requeue_work 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 update_cfs_rq_load_avg kernel/sched/fair.c:4608 [inline] update_load_avg+0x19c/0x153c kernel/sched/fair.c:4767 enqueue_entity+0x80/0x9ec kernel/sched/fair.c:5342 enqueue_task_fair+0x774/0x104c kernel/sched/fair.c:6985 enqueue_task+0x7c/0x2f4 kernel/sched/core.c:2084 activate_task kernel/sched/core.c:2126 [inline] ttwu_do_activate+0x19c/0x778 kernel/sched/core.c:3742 ttwu_queue kernel/sched/core.c:4015 [inline] try_to_wake_up+0x4b8/0xdf0 kernel/sched/core.c:4343 wake_up_process+0x18/0x24 kernel/sched/core.c:4476 kick_pool+0x3e0/0x58c kernel/workqueue.c:1279 __queue_work+0xde4/0x1230 kernel/workqueue.c:2342 queue_work_on+0xdc/0x18c kernel/workqueue.c:2392 queue_work include/linux/workqueue.h:662 [inline] loop_queue_work drivers/block/loop.c:853 [inline] loop_queue_rq+0x944/0xaa8 drivers/block/loop.c:1857 blk_mq_dispatch_rq_list+0x890/0x1548 block/blk-mq.c:2118 __blk_mq_sched_dispatch_requests+0x2c8/0x10e4 block/blk-mq-sched.c:299 blk_mq_sched_dispatch_requests+0xa4/0x154 block/blk-mq-sched.c:329 blk_mq_run_hw_queue+0x38c/0x4a4 block/blk-mq.c:2356 blk_mq_run_hw_queues+0x26c/0x354 block/blk-mq.c:2405 blk_mq_requeue_work+0x5d0/0x624 block/blk-mq.c:1572 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