diff mbox

[dpdk-dev,3/3] vfio: fix uninitialized variable

Message ID a4845f90b73d1bcb7c3d9cf67cd50abaab69bbf2.1527843615.git.anatoly.burakov@intel.com (mailing list archive)
State Accepted, archived
Delegated to: Thomas Monjalon
Headers show

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation success Compilation OK

Commit Message

Anatoly Burakov June 1, 2018, 9:08 a.m. UTC
Some static analyzers complain about it, even though
value is never used if not initialized. To avoid additional
false positives about a potential null-pointer dereferences,
also add a null-check.

Bugzilla ID: 58
Fixes: ea2dc1066870 ("vfio: add multi container support")
Cc: xiao.w.wang@intel.com
Cc: stable@dpdk.org

Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
---
 lib/librte_eal/linuxapp/eal/eal_vfio.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox

Patch

diff --git a/lib/librte_eal/linuxapp/eal/eal_vfio.c b/lib/librte_eal/linuxapp/eal/eal_vfio.c
index a2bbdfbf4..4b7fcf3d6 100644
--- a/lib/librte_eal/linuxapp/eal/eal_vfio.c
+++ b/lib/librte_eal/linuxapp/eal/eal_vfio.c
@@ -1778,7 +1778,7 @@  int __rte_experimental
 rte_vfio_container_group_unbind(int container_fd, int iommu_group_num)
 {
 	struct vfio_config *vfio_cfg;
-	struct vfio_group *cur_grp;
+	struct vfio_group *cur_grp = NULL;
 	int i;
 
 	vfio_cfg = get_vfio_cfg_by_container_fd(container_fd);
@@ -1795,7 +1795,7 @@  rte_vfio_container_group_unbind(int container_fd, int iommu_group_num)
 	}
 
 	/* This should not happen */
-	if (i == VFIO_MAX_GROUPS) {
+	if (i == VFIO_MAX_GROUPS || cur_grp == NULL) {
 		RTE_LOG(ERR, EAL, "Specified group number not found\n");
 		return -1;
 	}