int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
{
	struct pci_dev *pdev = instance->pdev;
	struct fusion_context *fusion = instance->ctrl_context;

	instance->evt_detail = dma_alloc_coherent(&pdev->dev,
			sizeof(struct megasas_evt_detail),
			&instance->evt_detail_h, GFP_KERNEL);

	if (!instance->evt_detail) {
		dev_err(&instance->pdev->dev,
			"Failed to allocate event detail buffer\n");
		return -ENOMEM;
	}

	if (fusion) {
		fusion->ioc_init_request =
			dma_alloc_coherent(&pdev->dev,
					   sizeof(struct MPI2_IOC_INIT_REQUEST),
					   &fusion->ioc_init_request_phys,
					   GFP_KERNEL);

		if (!fusion->ioc_init_request) {
			dev_err(&pdev->dev,
				"Failed to allocate PD list buffer\n");
			return -ENOMEM;
		}

		instance->snapdump_prop = dma_alloc_coherent(&pdev->dev,
				sizeof(struct MR_SNAPDUMP_PROPERTIES),
				&instance->snapdump_prop_h, GFP_KERNEL);

		if (!instance->snapdump_prop)
			dev_err(&pdev->dev,
				"Failed to allocate snapdump properties buffer\n");

		instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev,
							HOST_DEVICE_LIST_SZ,
							&instance->host_device_list_buf_h,
							GFP_KERNEL);

		if (!instance->host_device_list_buf) {
			dev_err(&pdev->dev,
				"Failed to allocate targetid list buffer\n");
			return -ENOMEM;
		}

	}

	instance->pd_list_buf =
		dma_alloc_coherent(&pdev->dev,
				     MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
				     &instance->pd_list_buf_h, GFP_KERNEL);

	if (!instance->pd_list_buf) {
		dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
		return -ENOMEM;
	}

	instance->ctrl_info_buf =
		dma_alloc_coherent(&pdev->dev,
				     sizeof(struct megasas_ctrl_info),
				     &instance->ctrl_info_buf_h, GFP_KERNEL);

	if (!instance->ctrl_info_buf) {
		dev_err(&pdev->dev,
			"Failed to allocate controller info buffer\n");
		return -ENOMEM;
	}

	instance->ld_list_buf =
		dma_alloc_coherent(&pdev->dev,
				     sizeof(struct MR_LD_LIST),
				     &instance->ld_list_buf_h, GFP_KERNEL);

	if (!instance->ld_list_buf) {
		dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
		return -ENOMEM;
	}

	instance->ld_targetid_list_buf =
		dma_alloc_coherent(&pdev->dev,
				sizeof(struct MR_LD_TARGETID_LIST),
				&instance->ld_targetid_list_buf_h, GFP_KERNEL);

	if (!instance->ld_targetid_list_buf) {
		dev_err(&pdev->dev,
			"Failed to allocate LD targetid list buffer\n");
		return -ENOMEM;
	}

	if (!reset_devices) {
		instance->system_info_buf =
			dma_alloc_coherent(&pdev->dev,
					sizeof(struct MR_DRV_SYSTEM_INFO),
					&instance->system_info_h, GFP_KERNEL);
		instance->pd_info =
			dma_alloc_coherent(&pdev->dev,
					sizeof(struct MR_PD_INFO),
					&instance->pd_info_h, GFP_KERNEL);
		instance->tgt_prop =
			dma_alloc_coherent(&pdev->dev,
					sizeof(struct MR_TARGET_PROPERTIES),
					&instance->tgt_prop_h, GFP_KERNEL);
		instance->crash_dump_buf =
			dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
					&instance->crash_dump_h, GFP_KERNEL);

		if (!instance->system_info_buf)
			dev_err(&instance->pdev->dev,
				"Failed to allocate system info buffer\n");

		if (!instance->pd_info)
			dev_err(&instance->pdev->dev,
				"Failed to allocate pd_info buffer\n");

		if (!instance->tgt_prop)
			dev_err(&instance->pdev->dev,
				"Failed to allocate tgt_prop buffer\n");

		if (!instance->crash_dump_buf)
			dev_err(&instance->pdev->dev,
				"Failed to allocate crash dump buffer\n");
	}

	return 0;
}

The product dereferences a pointer that it expects to be valid but is NULL.