static uint8_t arcmsr_hbaA_abort_allcmd(struct AdapterControlBlock *acb)
{
	struct MessageUnit_A __iomem *reg = acb->pmuA;
	writel(ARCMSR_INBOUND_MESG0_ABORT_CMD, &reg->inbound_msgaddr0);
	if (!arcmsr_hbaA_wait_msgint_ready(acb)) {
		printk(KERN_NOTICE
			"arcmsr%d: wait 'abort all outstanding command' timeout\n"
			, acb->host->host_no);
		return false;
	}
	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.