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conf: Fix leak in virNodeDeviceDefParseXML

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The 'nodes' is overwritten after the first usage and possibly leaked
if any code in the first set of parsing goes to error.

Found by Coverity.

Signed-off-by: John Ferlan <jferlan@redhat.com>
This commit is contained in:
John Ferlan
2017-02-20 07:19:10 -05:00
parent 38a8489c01
commit 86e676f201
1 changed files with 4 additions and 6 deletions
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10
src/conf/node_device_conf.c
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@@ -1766,7 +1766,7 @@ virNodeDeviceDefParseXML(xmlXPathContextPtr ctxt,
{ {
virNodeDeviceDefPtr def; virNodeDeviceDefPtr def;
virNodeDevCapsDefPtr *next_cap; virNodeDevCapsDefPtr *next_cap;
xmlNodePtr *nodes; xmlNodePtr *nodes = NULL;
int n, m; int n, m;
size_t i; size_t i;
@@ -1789,7 +1789,6 @@ virNodeDeviceDefParseXML(xmlXPathContextPtr ctxt,
def->sysfs_path = virXPathString("string(./path[1])", ctxt); def->sysfs_path = virXPathString("string(./path[1])", ctxt);
/* Parse devnodes */ /* Parse devnodes */
nodes = NULL;
if ((n = virXPathNodeSet("./devnode", ctxt, &nodes)) < 0) if ((n = virXPathNodeSet("./devnode", ctxt, &nodes)) < 0)
goto error; goto error;
@@ -1842,7 +1841,7 @@ virNodeDeviceDefParseXML(xmlXPathContextPtr ctxt,
ctxt); ctxt);
/* Parse device capabilities */ /* Parse device capabilities */
nodes = NULL; VIR_FREE(nodes);
if ((n = virXPathNodeSet("./capability", ctxt, &nodes)) < 0) if ((n = virXPathNodeSet("./capability", ctxt, &nodes)) < 0)
goto error; goto error;
@@ -1859,10 +1858,8 @@ virNodeDeviceDefParseXML(xmlXPathContextPtr ctxt,
nodes[i], nodes[i],
create, create,
virt_type); virt_type);
if (!*next_cap) { if (!*next_cap)
VIR_FREE(nodes);
goto error; goto error;
}
next_cap = &(*next_cap)->next; next_cap = &(*next_cap)->next;
} }
@@ -1872,6 +1869,7 @@ virNodeDeviceDefParseXML(xmlXPathContextPtr ctxt,
error: error:
virNodeDeviceDefFree(def); virNodeDeviceDefFree(def);
VIR_FREE(nodes);
return NULL; return NULL;
} }