static bool tg3_enable_msix(struct tg3 *tp)
{
	int i, rc;
	struct msix_entry msix_ent[TG3_IRQ_MAX_VECS];

	tp->txq_cnt = tp->txq_req;
	tp->rxq_cnt = tp->rxq_req;
	if (!tp->rxq_cnt)
		tp->rxq_cnt = netif_get_num_default_rss_queues();
	if (tp->rxq_cnt > tp->rxq_max)
		tp->rxq_cnt = tp->rxq_max;

	/* Disable multiple TX rings by default.  Simple round-robin hardware
	 * scheduling of the TX rings can cause starvation of rings with
	 * small packets when other rings have TSO or jumbo packets.
	 */
	if (!tp->txq_req)
		tp->txq_cnt = 1;

	tp->irq_cnt = tg3_irq_count(tp);

	for (i = 0; i < tp->irq_max; i++) {
		msix_ent[i].entry  = i;
		msix_ent[i].vector = 0;
	}

	rc = pci_enable_msix(tp->pdev, msix_ent, tp->irq_cnt);
	if (rc < 0) {
		return false;
	} else if (rc != 0) {
		if (pci_enable_msix(tp->pdev, msix_ent, rc))
			return false;
		netdev_notice(tp->dev, "Requested %d MSI-X vectors, received %d\n",
			      tp->irq_cnt, rc);
		tp->irq_cnt = rc;
		tp->rxq_cnt = max(rc - 1, 1);
		if (tp->txq_cnt)
			tp->txq_cnt = min(tp->rxq_cnt, tp->txq_max);
	}

	for (i = 0; i < tp->irq_max; i++)
		tp->napi[i].irq_vec = msix_ent[i].vector;

	if (netif_set_real_num_rx_queues(tp->dev, tp->rxq_cnt)) {
		pci_disable_msix(tp->pdev);
		return false;
	}

	if (tp->irq_cnt == 1)
		return true;

	tg3_flag_set(tp, ENABLE_RSS);

	if (tp->txq_cnt > 1)
		tg3_flag_set(tp, ENABLE_TSS);

	netif_set_real_num_tx_queues(tp->dev, tp->txq_cnt);

	return true;
}

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.