nvmet_fc_register_targetport(struct nvmet_fc_port_info *pinfo,
			struct nvmet_fc_target_template *template,
			struct device *dev,
			struct nvmet_fc_target_port **portptr)
{
	struct nvmet_fc_tgtport *newrec;
	unsigned long flags;
	int ret, idx;

	if (!template->xmt_ls_rsp || !template->fcp_op ||
	    !template->fcp_abort ||
	    !template->fcp_req_release || !template->targetport_delete ||
	    !template->max_hw_queues || !template->max_sgl_segments ||
	    !template->max_dif_sgl_segments || !template->dma_boundary) {
		ret = -EINVAL;
		goto out_regtgt_failed;
	}

	newrec = kzalloc((sizeof(*newrec) + template->target_priv_sz),
			 GFP_KERNEL);
	if (!newrec) {
		ret = -ENOMEM;
		goto out_regtgt_failed;
	}

	idx = ida_simple_get(&nvmet_fc_tgtport_cnt, 0, 0, GFP_KERNEL);
	if (idx < 0) {
		ret = -ENOSPC;
		goto out_fail_kfree;
	}

	if (!get_device(dev) && dev) {
		ret = -ENODEV;
		goto out_ida_put;
	}

	newrec->fc_target_port.node_name = pinfo->node_name;
	newrec->fc_target_port.port_name = pinfo->port_name;
	newrec->fc_target_port.private = &newrec[1];
	newrec->fc_target_port.port_id = pinfo->port_id;
	newrec->fc_target_port.port_num = idx;
	INIT_LIST_HEAD(&newrec->tgt_list);
	newrec->dev = dev;
	newrec->ops = template;
	spin_lock_init(&newrec->lock);
	INIT_LIST_HEAD(&newrec->ls_list);
	INIT_LIST_HEAD(&newrec->ls_busylist);
	INIT_LIST_HEAD(&newrec->assoc_list);
	kref_init(&newrec->ref);
	ida_init(&newrec->assoc_cnt);
	newrec->max_sg_cnt = min_t(u32, NVMET_FC_MAX_XFR_SGENTS,
					template->max_sgl_segments);

	ret = nvmet_fc_alloc_ls_iodlist(newrec);
	if (ret) {
		ret = -ENOMEM;
		goto out_free_newrec;
	}

	spin_lock_irqsave(&nvmet_fc_tgtlock, flags);
	list_add_tail(&newrec->tgt_list, &nvmet_fc_target_list);
	spin_unlock_irqrestore(&nvmet_fc_tgtlock, flags);

	*portptr = &newrec->fc_target_port;
	return 0;

out_free_newrec:
	put_device(dev);
out_ida_put:
	ida_simple_remove(&nvmet_fc_tgtport_cnt, idx);
out_fail_kfree:
	kfree(newrec);
out_regtgt_failed:
	*portptr = NULL;
	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.