static int set_user_buf_size(struct mlx5_ib_dev *dev,
			    struct mlx5_ib_qp *qp,
			    struct mlx5_ib_create_qp *ucmd,
			    struct mlx5_ib_qp_base *base,
			    struct ib_qp_init_attr *attr)
{
	int desc_sz = 1 << qp->sq.wqe_shift;

	if (desc_sz > MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq)) {
		mlx5_ib_warn(dev, "desc_sz %d, max_sq_desc_sz %d\n",
			     desc_sz, MLX5_CAP_GEN(dev->mdev, max_wqe_sz_sq));
		return -EINVAL;
	}

	if (ucmd->sq_wqe_count && ((1 << ilog2(ucmd->sq_wqe_count)) != ucmd->sq_wqe_count)) {
		mlx5_ib_warn(dev, "sq_wqe_count %d, sq_wqe_count %d\n",
			     ucmd->sq_wqe_count, ucmd->sq_wqe_count);
		return -EINVAL;
	}

	qp->sq.wqe_cnt = ucmd->sq_wqe_count;

	if (qp->sq.wqe_cnt > (1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz))) {
		mlx5_ib_warn(dev, "wqe_cnt %d, max_wqes %d\n",
			     qp->sq.wqe_cnt,
			     1 << MLX5_CAP_GEN(dev->mdev, log_max_qp_sz));
		return -EINVAL;
	}

	if (attr->qp_type == IB_QPT_RAW_PACKET ||
	    qp->flags & MLX5_IB_QP_UNDERLAY) {
		base->ubuffer.buf_size = qp->rq.wqe_cnt << qp->rq.wqe_shift;
		qp->raw_packet_qp.sq.ubuffer.buf_size = qp->sq.wqe_cnt << 6;
	} else {
		base->ubuffer.buf_size = (qp->rq.wqe_cnt << qp->rq.wqe_shift) +
					 (qp->sq.wqe_cnt << 6);
	}

	return 0;
}

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.