BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 PID: 777 Comm: kworker/u4:4 Not tainted 6.1.148-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Workqueue: events_unbound commit_work
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3772 [inline]
 validate_chain kernel/locking/lockdep.c:3793 [inline]
 __lock_acquire+0x1b40/0x6544 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x644 kernel/locking/lockdep.c:5662
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x6c/0xb4 kernel/locking/spinlock.c:162
 lock_timer_base+0x11c/0x224 kernel/time/timer.c:999
 __mod_timer+0x100/0xb48 kernel/time/timer.c:1072
 schedule_timeout+0x17c/0x2c8 kernel/time/timer.c:1964
 do_wait_for_common+0x284/0x3e4 kernel/sched/completion.c:85
 __wait_for_common kernel/sched/completion.c:106 [inline]
 wait_for_common kernel/sched/completion.c:117 [inline]
 wait_for_completion_timeout+0x48/0x68 kernel/sched/completion.c:157
 drm_atomic_helper_wait_for_flip_done+0xf0/0x258 drivers/gpu/drm/drm_atomic_helper.c:1718
 vkms_atomic_commit_tail+0x94/0x20c drivers/gpu/drm/vkms/vkms_drv.c:81
 commit_tail+0x268/0x3bc drivers/gpu/drm/drm_atomic_helper.c:1831
 commit_work+0x20/0x30 drivers/gpu/drm/drm_atomic_helper.c:1851
 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292
 worker_thread+0x8c8/0xfbc kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:849