[libvirt] [PATCH] virNetlinkDumpCommand: Don't leak response buffer

[Michal Privoznik]

==16451== 32,768 bytes in 2 blocks are definitely lost in loss record 1,007 of 1,013
==16451==    at 0x4C2AF0F: malloc (vg_replace_malloc.c:299)
==16451==    by 0x7CADB40: nl_recv (in /usr/lib64/libnl-3.so.200.23.0)
==16451==    by 0x532DFAC: virNetlinkDumpCommand (virnetlink.c:363)
==16451==    by 0x53236AE: virNetDevIPCheckIPv6Forwarding (virnetdevip.c:641)
==16451==    by 0xE3E4A1A: networkStartNetworkVirtual (bridge_driver.c:2490)
==16451==    by 0xE3E55F5: networkStartNetwork (bridge_driver.c:2832)
==16451==    by 0xE3DFFE5: networkAutostartConfig (bridge_driver.c:531)
==16451==    by 0x53F47E0: virNetworkObjListForEachHelper (virnetworkobj.c:1412)
==16451==    by 0x52FE69F: virHashForEach (virhash.c:606)
==16451==    by 0x53F4857: virNetworkObjListForEach (virnetworkobj.c:1439)
==16451==    by 0xE3E0BF4: networkStateAutoStart (bridge_driver.c:808)
==16451==    by 0x55689CE: virStateInitialize (libvirt.c:758)

Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---
 src/util/virnetlink.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/util/virnetlink.c b/src/util/virnetlink.c
index 0e281b06b8..955f1558ee 100644
--- a/src/util/virnetlink.c
+++ b/src/util/virnetlink.c
@@ -360,6 +360,7 @@ virNetlinkDumpCommand(struct nl_msg *nl_msg,
         goto cleanup;
 
     while (!end) {
+        VIR_FREE(resp);
         len = nl_recv(nlhandle, &nladdr, (unsigned char **)&resp, NULL);
         VIR_WARNINGS_NO_CAST_ALIGN
         for (msg = resp; NLMSG_OK(msg, len); msg = NLMSG_NEXT(msg, len)) {
@@ -378,6 +379,7 @@ virNetlinkDumpCommand(struct nl_msg *nl_msg,
     ret = 0;
 
  cleanup:
+    VIR_FREE(resp);
     virNetlinkFree(nlhandle);
     return ret;
 }
-- 
2.16.1