nvmet_fc_ls_disconnect(struct nvmet_fc_tgtport *tgtport,
			struct nvmet_fc_ls_iod *iod)
{
	struct fcnvme_ls_disconnect_rqst *rqst =
			(struct fcnvme_ls_disconnect_rqst *)iod->rqstbuf;
	struct fcnvme_ls_disconnect_acc *acc =
			(struct fcnvme_ls_disconnect_acc *)iod->rspbuf;
	struct nvmet_fc_tgt_queue *queue = NULL;
	struct nvmet_fc_tgt_assoc *assoc;
	int ret = 0;
	bool del_assoc = false;

	memset(acc, 0, sizeof(*acc));

	if (iod->rqstdatalen < sizeof(struct fcnvme_ls_disconnect_rqst))
		ret = VERR_DISCONN_LEN;
	else if (rqst->desc_list_len !=
			fcnvme_lsdesc_len(
				sizeof(struct fcnvme_ls_disconnect_rqst)))
		ret = VERR_DISCONN_RQST_LEN;
	else if (rqst->associd.desc_tag != cpu_to_be32(FCNVME_LSDESC_ASSOC_ID))
		ret = VERR_ASSOC_ID;
	else if (rqst->associd.desc_len !=
			fcnvme_lsdesc_len(
				sizeof(struct fcnvme_lsdesc_assoc_id)))
		ret = VERR_ASSOC_ID_LEN;
	else if (rqst->discon_cmd.desc_tag !=
			cpu_to_be32(FCNVME_LSDESC_DISCONN_CMD))
		ret = VERR_DISCONN_CMD;
	else if (rqst->discon_cmd.desc_len !=
			fcnvme_lsdesc_len(
				sizeof(struct fcnvme_lsdesc_disconn_cmd)))
		ret = VERR_DISCONN_CMD_LEN;
	else if ((rqst->discon_cmd.scope != FCNVME_DISCONN_ASSOCIATION) &&
			(rqst->discon_cmd.scope != FCNVME_DISCONN_CONNECTION))
		ret = VERR_DISCONN_SCOPE;
	else {
		/* match an active association */
		assoc = nvmet_fc_find_target_assoc(tgtport,
				be64_to_cpu(rqst->associd.association_id));
		iod->assoc = assoc;
		if (assoc) {
			if (rqst->discon_cmd.scope ==
					FCNVME_DISCONN_CONNECTION) {
				queue = nvmet_fc_find_target_queue(tgtport,
						be64_to_cpu(
							rqst->discon_cmd.id));
				if (!queue) {
					nvmet_fc_tgt_a_put(assoc);
					ret = VERR_NO_CONN;
				}
			}
		} else
			ret = VERR_NO_ASSOC;
	}

	if (ret) {
		dev_err(tgtport->dev,
			"Disconnect LS failed: %s\n",
			validation_errors[ret]);
		iod->lsreq->rsplen = nvmet_fc_format_rjt(acc,
				NVME_FC_MAX_LS_BUFFER_SIZE, rqst->w0.ls_cmd,
				(ret == VERR_NO_ASSOC) ?
					FCNVME_RJT_RC_INV_ASSOC :
					(ret == VERR_NO_CONN) ?
						FCNVME_RJT_RC_INV_CONN :
						FCNVME_RJT_RC_LOGIC,
				FCNVME_RJT_EXP_NONE, 0);
		return;
	}

	/* format a response */

	iod->lsreq->rsplen = sizeof(*acc);

	nvmet_fc_format_rsp_hdr(acc, FCNVME_LS_ACC,
			fcnvme_lsdesc_len(
				sizeof(struct fcnvme_ls_disconnect_acc)),
			FCNVME_LS_DISCONNECT);


	/* are we to delete a Connection ID (queue) */
	if (queue) {
		int qid = queue->qid;

		nvmet_fc_delete_target_queue(queue);

		/* release the get taken by find_target_queue */
		nvmet_fc_tgt_q_put(queue);

		/* tear association down if io queue terminated */
		if (!qid)
			del_assoc = true;
	}

	/* release get taken in nvmet_fc_find_target_assoc */
	nvmet_fc_tgt_a_put(iod->assoc);

	if (del_assoc)
		nvmet_fc_delete_target_assoc(iod->assoc);
}

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.