BUG: MAX_LOCKDEP_CHAINS too low! turning off the locking correctness validator. CPU: 0 UID: 0 PID: 8477 Comm: udevd Not tainted syzkaller #0 PREEMPT 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+0x14c/0x2e0 kernel/locking/lockdep.c:5868 _raw_spin_lock_nested+0x50/0x6c kernel/locking/spinlock.c:378 raw_spin_rq_lock_nested kernel/sched/core.c:638 [inline] raw_spin_rq_lock kernel/sched/sched.h:1546 [inline] rq_lock kernel/sched/sched.h:1868 [inline] ttwu_queue kernel/sched/core.c:3967 [inline] try_to_wake_up+0x440/0xe24 kernel/sched/core.c:4293 wake_up_process+0x18/0x24 kernel/sched/core.c:4424 wakeup_softirqd kernel/softirq.c:81 [inline] raise_softirq_irqoff+0x88/0xa4 kernel/softirq.c:774 rcu_read_unlock_special+0x268/0x3d8 kernel/rcu/tree_plugin.h:750 __rcu_read_unlock+0xa4/0x108 kernel/rcu/tree_plugin.h:438 rcu_read_unlock include/linux/rcupdate.h:899 [inline] d_alloc_parallel+0xef4/0x1180 fs/dcache.c:2646 __lookup_slow+0x104/0x378 fs/namei.c:1801 lookup_slow+0x5c/0x80 fs/namei.c:1833 walk_component+0x270/0x364 fs/namei.c:2151 lookup_last fs/namei.c:2652 [inline] path_lookupat+0x13c/0x3d0 fs/namei.c:2676 filename_lookup+0x1ac/0x454 fs/namei.c:2705 vfs_statx+0xec/0x4bc fs/stat.c:353 vfs_fstatat+0x100/0x150 fs/stat.c:375 __do_sys_newfstatat fs/stat.c:542 [inline] __se_sys_newfstatat fs/stat.c:536 [inline] __arm64_sys_newfstatat+0x100/0x180 fs/stat.c:536 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:746 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596