static int tg3_set_mac_addr(struct net_device *dev, void *p)
{
	struct tg3 *tp = netdev_priv(dev);
	struct sockaddr *addr = p;
	int err = 0, skip_mac_1 = 0;

	if (!is_valid_ether_addr(addr->sa_data))
		return -EADDRNOTAVAIL;

	memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);

	if (!netif_running(dev))
		return 0;

	if (tg3_flag(tp, ENABLE_ASF)) {
		u32 addr0_high, addr0_low, addr1_high, addr1_low;

		addr0_high = tr32(MAC_ADDR_0_HIGH);
		addr0_low = tr32(MAC_ADDR_0_LOW);
		addr1_high = tr32(MAC_ADDR_1_HIGH);
		addr1_low = tr32(MAC_ADDR_1_LOW);

		/* Skip MAC addr 1 if ASF is using it. */
		if ((addr0_high != addr1_high || addr0_low != addr1_low) &&
		    !(addr1_high == 0 && addr1_low == 0))
			skip_mac_1 = 1;
	}
	spin_lock_bh(&tp->lock);
	__tg3_set_mac_addr(tp, skip_mac_1);
	spin_unlock_bh(&tp->lock);

	return err;
}

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.