BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. CPU: 1 UID: 0 PID: 6585 Comm: kworker/1:3 Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Workqueue: events drm_fb_helper_damage_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: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 wq_worker_sleeping+0x128/0x214 kernel/workqueue.c:1452 sched_submit_work+0xa4/0x144 kernel/sched/core.c:6909 schedule+0x94/0x230 kernel/sched/core.c:6959 schedule_timeout+0x128/0x270 kernel/time/sleep_timeout.c:99 drm_wait_one_vblank+0x2e0/0xa50 drivers/gpu/drm/drm_vblank.c:1314 drm_crtc_wait_one_vblank+0x50/0x8c drivers/gpu/drm/drm_vblank.c:1334 drm_client_modeset_wait_for_vblank+0xc8/0xf0 drivers/gpu/drm/drm_client_modeset.c:1330 drm_fb_helper_fb_dirty drivers/gpu/drm/drm_fb_helper.c:334 [inline] drm_fb_helper_damage_work+0xb4/0x568 drivers/gpu/drm/drm_fb_helper.c:369 process_one_work+0x7c0/0x1558 kernel/workqueue.c:3257 process_scheduled_works kernel/workqueue.c:3340 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3421 kthread+0x5fc/0x75c kernel/kthread.c:463 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844