nvmet_fc_add_port(struct nvmet_port *port)
{
	struct nvmet_fc_tgtport *tgtport;
	struct nvmet_fc_traddr traddr = { 0L, 0L };
	unsigned long flags;
	int ret;

	/* validate the address info */
	if ((port->disc_addr.trtype != NVMF_TRTYPE_FC) ||
	    (port->disc_addr.adrfam != NVMF_ADDR_FAMILY_FC))
		return -EINVAL;

	/* map the traddr address info to a target port */

	ret = nvme_fc_parse_traddr(&traddr, port->disc_addr.traddr,
			sizeof(port->disc_addr.traddr));
	if (ret)
		return ret;

	ret = -ENXIO;
	spin_lock_irqsave(&nvmet_fc_tgtlock, flags);
	list_for_each_entry(tgtport, &nvmet_fc_target_list, tgt_list) {
		if ((tgtport->fc_target_port.node_name == traddr.nn) &&
		    (tgtport->fc_target_port.port_name == traddr.pn)) {
			/* a FC port can only be 1 nvmet port id */
			if (!tgtport->port) {
				tgtport->port = port;
				port->priv = tgtport;
				nvmet_fc_tgtport_get(tgtport);
				ret = 0;
			} else
				ret = -EALREADY;
			break;
		}
	}
	spin_unlock_irqrestore(&nvmet_fc_tgtlock, flags);
	return ret;
}

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.