static void arcmsr_iop_init(struct AdapterControlBlock *acb)
{
	uint32_t intmask_org;
	/* disable all outbound interrupt */
	intmask_org = arcmsr_disable_outbound_ints(acb);
	arcmsr_wait_firmware_ready(acb);
	arcmsr_iop_confirm(acb);
	/*start background rebuild*/
	arcmsr_start_adapter_bgrb(acb);
	/* empty doorbell Qbuffer if door bell ringed */
	arcmsr_clear_doorbell_queue_buffer(acb);
	arcmsr_enable_eoi_mode(acb);
	/* enable outbound Post Queue,outbound doorbell Interrupt */
	arcmsr_enable_outbound_ints(acb, intmask_org);
	acb->acb_flags |= ACB_F_IOP_INITED;
}

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.