static void intel_pmu_cpu_dying(int cpu)
{
	struct cpu_hw_events *cpuc = &per_cpu(cpu_hw_events, cpu);
	struct intel_shared_regs *pc;

	pc = cpuc->shared_regs;
	if (pc) {
		if (pc->core_id == -1 || --pc->refcnt == 0)
			kfree(pc);
		cpuc->shared_regs = NULL;
	}

	fini_debug_store_on_cpu(cpu);
}

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.