static irqreturn_t tg3_test_isr(int irq, void *dev_id)
{
	struct tg3_napi *tnapi = dev_id;
	struct tg3 *tp = tnapi->tp;
	struct tg3_hw_status *sblk = tnapi->hw_status;

	if ((sblk->status & SD_STATUS_UPDATED) ||
	    !(tr32(TG3PCI_PCISTATE) & PCISTATE_INT_NOT_ACTIVE)) {
		tg3_disable_ints(tp);
		return IRQ_RETVAL(1);
	}
	return IRQ_RETVAL(0);
}

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.