static void pit_load_count(struct kvm *kvm, int channel, u32 val)
{
	struct kvm_kpit_state *ps = &kvm->arch.vpit->pit_state;

	WARN_ON(!mutex_is_locked(&ps->lock));

	pr_debug("load_count val is %d, channel is %d\n", val, channel);

	/*
	 * The largest possible initial count is 0; this is equivalent
	 * to 216 for binary counting and 104 for BCD counting.
	 */
	if (val == 0)
		val = 0x10000;

	ps->channels[channel].count = val;

	if (channel != 0) {
		ps->channels[channel].count_load_time = ktime_get();
		return;
	}

	/* Two types of timer
	 * mode 1 is one shot, mode 2 is period, otherwise del timer */
	switch (ps->channels[0].mode) {
	case 0:
	case 1:
        /* FIXME: enhance mode 4 precision */
	case 4:
		if (!(ps->flags & KVM_PIT_FLAGS_HPET_LEGACY)) {
			create_pit_timer(ps, val, 0);
		}
		break;
	case 2:
	case 3:
		if (!(ps->flags & KVM_PIT_FLAGS_HPET_LEGACY)){
			create_pit_timer(ps, val, 1);
		}
		break;
	default:
		destroy_pit_timer(&ps->pit_timer);
	}
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.