Re: [libvirt] [PATCH] conf: resctrl object is not properly handled

resctrl object stored in def->resctrls is shared by cachetune and memorytune. The domain xml configuration is parsed firstly for cachetune then memorytune, and the resctrl object will not be created in parsing settings for memorytune once it found sharing exists. But resctrl is improperly freed when sharing happens. Signed-off-by: Wang Huaqiang <huaqiang.wang(a)intel.com&gt; --- src/conf/domain_conf.c | 12 +++++------- tests/genericxml2xmlindata/memorytune.xml | 4 ++++ 2 files changed, 9 insertions(+), 7 deletions(-) diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 617ccac..604e006 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -19590,7 +19590,6 @@ virDomainMemorytuneDefParse(virDomainDefPtr def, VIR_AUTOUNREF(virResctrlAllocPtr) alloc = NULL; ssize_t i = 0; int n; - int ret = -1; ctxt->node = node; @@ -19632,14 +19631,13 @@ virDomainMemorytuneDefParse(virDomainDefPtr def, if (!(resctrl = virDomainResctrlNew(node, alloc, vcpus, flags))) return -1; - if (VIR_APPEND_ELEMENT(def->resctrls, def->nresctrls, resctrl) < 0) - goto cleanup; + if (VIR_APPEND_ELEMENT(def->resctrls, def->nresctrls, resctrl) < 0) { + virDomainResctrlDefFree(resctrl); + return -1; + } } - ret = 0; - cleanup: - virDomainResctrlDefFree(resctrl); - return ret; + return 0; }

diff --git a/tests/genericxml2xmlindata/memorytune.xml b/tests/genericxml2xmlindata/memorytune.xml index ea03e22..7486b54 100644 --- a/tests/genericxml2xmlindata/memorytune.xml +++ b/tests/genericxml2xmlindata/memorytune.xml @@ -5,6 +5,10 @@ <currentMemory unit='KiB'>219136</currentMemory> <vcpu placement='static'>4</vcpu> <cputune> + <cachetune vcpus='0-1'> + <cache id='0' level='3' type='both' size='768' unit='KiB'/> + <cache id='1' level='3' type='both' size='768' unit='KiB'/> + </cachetune> <memorytune vcpus='0-1'> <node id='0' bandwidth='20'/> <node id='1' bandwidth='30'/>