[dpdk-stable] [PATCH] net/ifc: fix unchecked return value

[Ferruh Yigit]

On 11/26/2019 6:08 AM, Ye Xiaolong wrote:
> On 11/26, Xiao Wang wrote:
>> It's possible that we fail to get the IOMMU group of ifcvf device, this
>> patch adds a check on the return value.
>>
>> Coverity issue: 349894
>> Fixes: a3f8150eac6d ("net/ifcvf: add ifcvf vDPA driver")
>> Cc: stable at dpdk.org
>>
>> Signed-off-by: Xiao Wang <xiao.w.wang at intel.com>
>> ---
>> drivers/net/ifc/ifcvf_vdpa.c | 8 ++++++--
>> 1 file changed, 6 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/net/ifc/ifcvf_vdpa.c b/drivers/net/ifc/ifcvf_vdpa.c
>> index 9c562def0..da4667ba5 100644
>> --- a/drivers/net/ifc/ifcvf_vdpa.c
>> +++ b/drivers/net/ifc/ifcvf_vdpa.c
>> @@ -136,15 +136,19 @@ ifcvf_vfio_setup(struct ifcvf_internal *internal)
>> 	struct rte_pci_device *dev = internal->pdev;
>> 	char devname[RTE_DEV_NAME_MAX_LEN] = {0};
>> 	int iommu_group_num;
>> -	int i;
>> +	int i, ret;
>>
>> 	internal->vfio_dev_fd = -1;
>> 	internal->vfio_group_fd = -1;
>> 	internal->vfio_container_fd = -1;
>>
>> 	rte_pci_device_name(&dev->addr, devname, RTE_DEV_NAME_MAX_LEN);
>> -	rte_vfio_get_group_num(rte_pci_get_sysfs_path(), devname,
>> +	ret = rte_vfio_get_group_num(rte_pci_get_sysfs_path(), devname,
>> 			&iommu_group_num);
>> +	if (ret <= 0) {
>> +		DRV_LOG(ERR, "%s failed to get IOMMU group", devname);
>> +		return -1;
>> +	}
>>
>> 	internal->vfio_container_fd = rte_vfio_container_create();
>> 	if (internal->vfio_container_fd < 0)
>> -- 
>> 2.15.1
>>
> 
> Reviewed-by: Xiaolong Ye <xiaolong.ye at intel.com>
> 

Applied to dpdk-next-net/master, thanks.