static irqreturn_t tg3_msi(int irq, void *dev_id)
{
	struct tg3_napi *tnapi = dev_id;
	struct tg3 *tp = tnapi->tp;

	prefetch(tnapi->hw_status);
	if (tnapi->rx_rcb)
		prefetch(&tnapi->rx_rcb[tnapi->rx_rcb_ptr]);
	/*
	 * Writing any value to intr-mbox-0 clears PCI INTA# and
	 * chip-internal interrupt pending events.
	 * Writing non-zero to intr-mbox-0 additional tells the
	 * NIC to stop sending us irqs, engaging "in-intr-handler"
	 * event coalescing.
	 */
	tw32_mailbox(tnapi->int_mbox, 0x00000001);
	if (likely(!tg3_irq_sync(tp)))
		napi_schedule(&tnapi->napi);

	return IRQ_RETVAL(1);
}

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.