perf metrics: Avoid segv if default metricgroup isn't set

[platform/kernel/linux-rpi.git] / tools / perf / util / metricgroup.c

diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
index 6231044..bb5faaa 100644 (file)
--- a/tools/perf/util/metricgroup.c
+++ b/tools/perf/util/metricgroup.c
@@ -225,7 +225,7 @@ static struct metric *metric__new(const struct pmu_metric *pm,
 
        m->pmu = pm->pmu ?: "cpu";
        m->metric_name = pm->metric_name;
-       m->default_metricgroup_name = pm->default_metricgroup_name;
+       m->default_metricgroup_name = pm->default_metricgroup_name ?: "";
        m->modifier = NULL;
        if (modifier) {
                m->modifier = strdup(modifier);