static irqreturn_t arcmsr_hbaD_handle_isr(struct AdapterControlBlock *pACB)
{
	u32 host_interrupt_status;
	struct MessageUnit_D  *pmu = pACB->pmuD;

	host_interrupt_status = readl(pmu->host_int_status) &
		(ARCMSR_ARC1214_OUTBOUND_POSTQUEUE_ISR |
		ARCMSR_ARC1214_OUTBOUND_DOORBELL_ISR);
	if (!host_interrupt_status)
		return IRQ_NONE;
	do {
		/* MU post queue interrupts*/
		if (host_interrupt_status &
			ARCMSR_ARC1214_OUTBOUND_POSTQUEUE_ISR)
			arcmsr_hbaD_postqueue_isr(pACB);
		if (host_interrupt_status &
			ARCMSR_ARC1214_OUTBOUND_DOORBELL_ISR)
			arcmsr_hbaD_doorbell_isr(pACB);
		host_interrupt_status = readl(pmu->host_int_status);
	} while (host_interrupt_status &
		(ARCMSR_ARC1214_OUTBOUND_POSTQUEUE_ISR |
		ARCMSR_ARC1214_OUTBOUND_DOORBELL_ISR));
	return IRQ_HANDLED;
}

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.