static char *tg3_phy_string(struct tg3 *tp)
{
	switch (tp->phy_id & TG3_PHY_ID_MASK) {
	case TG3_PHY_ID_BCM5400:	return "5400";
	case TG3_PHY_ID_BCM5401:	return "5401";
	case TG3_PHY_ID_BCM5411:	return "5411";
	case TG3_PHY_ID_BCM5701:	return "5701";
	case TG3_PHY_ID_BCM5703:	return "5703";
	case TG3_PHY_ID_BCM5704:	return "5704";
	case TG3_PHY_ID_BCM5705:	return "5705";
	case TG3_PHY_ID_BCM5750:	return "5750";
	case TG3_PHY_ID_BCM5752:	return "5752";
	case TG3_PHY_ID_BCM5714:	return "5714";
	case TG3_PHY_ID_BCM5780:	return "5780";
	case TG3_PHY_ID_BCM5755:	return "5755";
	case TG3_PHY_ID_BCM5787:	return "5787";
	case TG3_PHY_ID_BCM5784:	return "5784";
	case TG3_PHY_ID_BCM5756:	return "5722/5756";
	case TG3_PHY_ID_BCM5906:	return "5906";
	case TG3_PHY_ID_BCM5761:	return "5761";
	case TG3_PHY_ID_BCM5718C:	return "5718C";
	case TG3_PHY_ID_BCM5718S:	return "5718S";
	case TG3_PHY_ID_BCM57765:	return "57765";
	case TG3_PHY_ID_BCM5719C:	return "5719C";
	case TG3_PHY_ID_BCM5720C:	return "5720C";
	case TG3_PHY_ID_BCM5762:	return "5762C";
	case TG3_PHY_ID_BCM8002:	return "8002/serdes";
	case 0:			return "serdes";
	default:		return "unknown";
	}
}

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.