[dpdk-dev] [PATCH] net/ifc: fix unchecked return value
Xiao Wang
xiao.w.wang at intel.com
Tue Nov 26 15:59:31 CET 2019
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
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