int mlx5_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
		     int qp_attr_mask, struct ib_qp_init_attr *qp_init_attr)
{
	struct mlx5_ib_dev *dev = to_mdev(ibqp->device);
	struct mlx5_ib_qp *qp = to_mqp(ibqp);
	int err = 0;
	u8 raw_packet_qp_state;

	if (ibqp->rwq_ind_tbl)
		return -ENOSYS;

	if (unlikely(ibqp->qp_type == IB_QPT_GSI))
		return mlx5_ib_gsi_query_qp(ibqp, qp_attr, qp_attr_mask,
					    qp_init_attr);

	/* Not all of output fields are applicable, make sure to zero them */
	memset(qp_init_attr, 0, sizeof(*qp_init_attr));
	memset(qp_attr, 0, sizeof(*qp_attr));

	if (unlikely(qp->qp_sub_type == MLX5_IB_QPT_DCT))
		return mlx5_ib_dct_query_qp(dev, qp, qp_attr,
					    qp_attr_mask, qp_init_attr);

	mutex_lock(&qp->mutex);

	if (qp->ibqp.qp_type == IB_QPT_RAW_PACKET ||
	    qp->flags & MLX5_IB_QP_UNDERLAY) {
		err = query_raw_packet_qp_state(dev, qp, &raw_packet_qp_state);
		if (err)
			goto out;
		qp->state = raw_packet_qp_state;
		qp_attr->port_num = 1;
	} else {
		err = query_qp_attr(dev, qp, qp_attr);
		if (err)
			goto out;
	}

	qp_attr->qp_state	     = qp->state;
	qp_attr->cur_qp_state	     = qp_attr->qp_state;
	qp_attr->cap.max_recv_wr     = qp->rq.wqe_cnt;
	qp_attr->cap.max_recv_sge    = qp->rq.max_gs;

	if (!ibqp->uobject) {
		qp_attr->cap.max_send_wr  = qp->sq.max_post;
		qp_attr->cap.max_send_sge = qp->sq.max_gs;
		qp_init_attr->qp_context = ibqp->qp_context;
	} else {
		qp_attr->cap.max_send_wr  = 0;
		qp_attr->cap.max_send_sge = 0;
	}

	qp_init_attr->qp_type = ibqp->qp_type;
	qp_init_attr->recv_cq = ibqp->recv_cq;
	qp_init_attr->send_cq = ibqp->send_cq;
	qp_init_attr->srq = ibqp->srq;
	qp_attr->cap.max_inline_data = qp->max_inline_data;

	qp_init_attr->cap	     = qp_attr->cap;

	qp_init_attr->create_flags = 0;
	if (qp->flags & MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK)
		qp_init_attr->create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK;

	if (qp->flags & MLX5_IB_QP_CROSS_CHANNEL)
		qp_init_attr->create_flags |= IB_QP_CREATE_CROSS_CHANNEL;
	if (qp->flags & MLX5_IB_QP_MANAGED_SEND)
		qp_init_attr->create_flags |= IB_QP_CREATE_MANAGED_SEND;
	if (qp->flags & MLX5_IB_QP_MANAGED_RECV)
		qp_init_attr->create_flags |= IB_QP_CREATE_MANAGED_RECV;
	if (qp->flags & MLX5_IB_QP_SQPN_QP1)
		qp_init_attr->create_flags |= mlx5_ib_create_qp_sqpn_qp1();

	qp_init_attr->sq_sig_type = qp->sq_signal_bits & MLX5_WQE_CTRL_CQ_UPDATE ?
		IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR;

out:
	mutex_unlock(&qp->mutex);
	return err;
}

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.