[libvirt] [PATCH v2] Fix memory leak in virNWFilterDefParseXML()
While running nwfilterxml2xmltest, it was found that valgrind pointed out the
following error...
==7466== 16 bytes in 1 blocks are definitely lost in loss record 26 of 90
==7466== at 0x4A06B6F: calloc (vg_replace_malloc.c:593)
==7466== by 0x4C651AD: virAlloc (viralloc.c:142)
==7466== by 0x4D0450D: virNWFilterDefParseNode (nwfilter_conf.c:2575)
==7466== by 0x4D05D84: virNWFilterDefParse (nwfilter_conf.c:2647)
==7466== by 0x401FDE: testCompareXMLToXMLHelper (nwfilterxml2xmltest.c:39)
==7466== by 0x402DE1: virtTestRun (testutils.c:138)
==7466== by 0x4018E9: mymain (nwfilterxml2xmltest.c:111)
==7466== by 0x403482: virtTestMain (testutils.c:593)
==7466== by 0x341F421A04: (below main) (libc-start.c:225)
...21 times, which are related to 21 tests in nwfilterxml2xmltest.c which sent
EXPECT_WARN = false. There were two scenarios in virNWFilterDefParseXML(),
when the variable 'entry' was malloc'ed, but not freed.
---
src/conf/nwfilter_conf.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/src/conf/nwfilter_conf.c b/src/conf/nwfilter_conf.c
index 793cb0e..d280df5 100644
--- a/src/conf/nwfilter_conf.c
+++ b/src/conf/nwfilter_conf.c
@@ -2576,21 +2576,25 @@ virNWFilterDefParseXML(xmlXPathContextPtr ctxt) {
goto cleanup;
if (xmlStrEqual(curr->name, BAD_CAST "rule")) {
- if (!(entry->rule = virNWFilterRuleParse(curr)))
+ if (!(entry->rule = virNWFilterRuleParse(curr))) {
+ virNWFilterEntryFree(entry);
goto cleanup;
+ }
} else if (xmlStrEqual(curr->name, BAD_CAST "filterref")) {
- if (!(entry->include = virNWFilterIncludeParse(curr)))
+ if (!(entry->include = virNWFilterIncludeParse(curr))) {
+ virNWFilterEntryFree(entry);
goto cleanup;
+ }
}
if (entry->rule || entry->include) {
if (VIR_REALLOC_N(ret->filterEntries, ret->nentries+1) < 0) {
- VIR_FREE(entry);
+ virNWFilterEntryFree(entry);
goto cleanup;
}
ret->filterEntries[ret->nentries++] = entry;
} else
- VIR_FREE(entry);
+ virNWFilterEntryFree(entry);
}
curr = curr->next;
}
--
1.8.1.4