static int pmcraid_build_passthrough_ioadls(
	struct pmcraid_cmd *cmd,
	int buflen,
	int direction
)
{
	struct pmcraid_sglist *sglist = NULL;
	struct scatterlist *sg = NULL;
	struct pmcraid_ioarcb *ioarcb = &cmd->ioa_cb->ioarcb;
	struct pmcraid_ioadl_desc *ioadl;
	int i;

	sglist = pmcraid_alloc_sglist(buflen);

	if (!sglist) {
		pmcraid_err("can't allocate memory for passthrough SGls\n");
		return -ENOMEM;
	}

	sglist->num_dma_sg = pci_map_sg(cmd->drv_inst->pdev,
					sglist->scatterlist,
					sglist->num_sg, direction);

	if (!sglist->num_dma_sg || sglist->num_dma_sg > PMCRAID_MAX_IOADLS) {
		dev_err(&cmd->drv_inst->pdev->dev,
			"Failed to map passthrough buffer!\n");
		pmcraid_free_sglist(sglist);
		return -EIO;
	}

	cmd->sglist = sglist;
	ioarcb->request_flags0 |= NO_LINK_DESCS;

	ioadl = pmcraid_init_ioadls(cmd, sglist->num_dma_sg);

	/* Initialize IOADL descriptor addresses */
	for_each_sg(sglist->scatterlist, sg, sglist->num_dma_sg, i) {
		ioadl[i].data_len = cpu_to_le32(sg_dma_len(sg));
		ioadl[i].address = cpu_to_le64(sg_dma_address(sg));
		ioadl[i].flags = 0;
	}

	/* setup the last descriptor */
	ioadl[i - 1].flags = IOADL_FLAGS_LAST_DESC;

	return 0;
}

This weakness involves numeric computation errors, such as integer overflows, underflows, or precision losses, which can lead to miscalculations and exploitable behaviors in software.