[libvirt] [PATCH] util: Prevent libvirtd crash
* src/util/virnetdevopenvswitch.c (virNetDevOpenvswitchAddPort): avoid libvirtd
crash due to derefing a NULL virtVlan->tag.
RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=852383
Signed-off-by: Alex Jia <ajia(a)redhat.com>
---
src/util/virnetdevopenvswitch.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/src/util/virnetdevopenvswitch.c b/src/util/virnetdevopenvswitch.c
index 601d79e..7d38ff8 100644
--- a/src/util/virnetdevopenvswitch.c
+++ b/src/util/virnetdevopenvswitch.c
@@ -100,7 +100,8 @@ int virNetDevOpenvswitchAddPort(const char *brname, const char
*ifname,
virBufferAsprintf(buf, "%d", virtVlan->tag[i]);
}
} else {
- virBufferAsprintf(buf, "tag=%d", virtVlan->tag[0]);
+ if (virtVlan->nTags)
+ virBufferAsprintf(buf, "tag=%d", virtVlan->tag[0]);
}
}
--
1.7.1