Re: [libvirt] [PATCH] virsh: plug memory leak on cmdDomIfGetLink() sucessful path

From: Alex Jia&lt;ajia(a)redhat.com&gt; Detected by valgrind. Leak introduced in commit dc675f3: * tools/virsh.c: fix memory leak on cmdDomIfGetLink. * how to reproduce? % valgrind -v --leak-check=full virsh domif-getlink<domain name> 0 * actual valgrind result: ==13102== 18 bytes in 1 blocks are definitely lost in loss record 9 of 47 ==13102== at 0x4A05FDE: malloc (vg_replace_malloc.c:236) ==13102== by 0x322A6A67DD: xmlStrndup (in /usr/lib64/libxml2.so.2.7.6) ==13102== by 0x414892: cmdDomIfGetLink (virsh.c:1538) ==13102== by 0x4136A2: vshCommandRun (virsh.c:16363) ==13102== by 0x4253FB: main (virsh.c:17865) ==13102== ==13102== LEAK SUMMARY: ==13102== definitely lost: 18 bytes in 1 blocks ==13102== indirectly lost: 0 bytes in 0 blocks ==13102== possibly lost: 0 bytes in 0 blocks ==13102== still reachable: 127,888 bytes in 1,361 blocks ==13102== suppressed: 0 bytes in 0 blocks Signed-off-by: Alex Jia&lt;ajia(a)redhat.com&gt; --- tools/virsh.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/tools/virsh.c b/tools/virsh.c index e6e4f8b..276e1cc 100644 --- a/tools/virsh.c +++ b/tools/virsh.c @@ -1538,7 +1538,6 @@ cmdDomIfGetLink (vshControl *ctl, const vshCmd *cmd) mac = virXMLPropString(cur, "address"); if (STRCASEEQ(mac, iface)){ - VIR_FREE(mac); goto hit; } } @@ -1574,6 +1573,7 @@ cleanup: if (dom) virDomainFree(dom); + VIR_FREE(mac); return ret; }