[dpdk-stable] patch 'vfio: fix uninitialized variable' has been queued to stable release 18.05.1

[Christian Ehrhardt]

Hi,

FYI, your patch has been queued to stable release 18.05.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 08/01/18. So please
shout if anyone has objections.

Thanks.

Christian Ehrhardt <christian.ehrhardt at canonical.com>

---
>From 059e1493c1c031daebb0d29088fbc729bcefe040 Mon Sep 17 00:00:00 2001
From: Anatoly Burakov <anatoly.burakov at intel.com>
Date: Fri, 1 Jun 2018 10:08:12 +0100
Subject: [PATCH] vfio: fix uninitialized variable

[ upstream commit c63a42535ada8e4226b9a41bb7757d0d045f8a72 ]

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")

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

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;
 	}
-- 
2.17.1