BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 UID: 0 PID: 4815 Comm: kworker/0:6 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/31/2026
Workqueue: usb_hub_wq hub_event
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:3899 [inline]
 validate_chain kernel/locking/lockdep.c:3920 [inline]
 __lock_acquire+0xed4/0x2b08 kernel/locking/lockdep.c:5288
 lock_acquire+0x13c/0x320 kernel/locking/lockdep.c:5942
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:155 [inline]
 _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:181
 remove_entity_load_avg+0x70/0x198 kernel/sched/fair.c:6078
 task_dead_fair+0x14/0x20 kernel/sched/fair.c:10017
 finish_task_switch+0x37c/0x858 kernel/sched/core.c:5470
 context_switch kernel/sched/core.c:5586 [inline]
 __schedule+0x136c/0x2b50 kernel/sched/core.c:7382
 preempt_schedule_common+0xd4/0x190 kernel/sched/core.c:7561
 preempt_schedule+0x60/0x78 kernel/sched/core.c:7585
 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:220 [inline]
 _raw_spin_unlock_irq+0x7c/0x80 kernel/locking/spinlock.c:229
 wq_worker_sleeping+0x184/0x21c kernel/workqueue.c:-1
 sched_submit_work kernel/sched/core.c:7425 [inline]
 schedule+0xdc/0x20c kernel/sched/core.c:7473
 schedule_timeout+0x13c/0x28c kernel/time/sleep_timeout.c:99
 schedule_timeout_uninterruptible+0x78/0xbc kernel/time/sleep_timeout.c:158
 msleep+0x3c/0x68 kernel/time/sleep_timeout.c:318
 hub_port_debounce+0x1d4/0x308 drivers/usb/core/hub.c:4746
 hub_port_debounce_be_stable drivers/usb/core/hub.h:184 [inline]
 hub_port_connect drivers/usb/core/hub.c:5437 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5725 [inline]
 port_event drivers/usb/core/hub.c:5889 [inline]
 hub_event+0x1400/0x39fc drivers/usb/core/hub.c:5971
 process_one_work kernel/workqueue.c:3495 [inline]
 process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3578
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3659
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854