Messages in this thread Patch in this message | | | Date | Wed, 31 Aug 2022 10:49:20 -0700 | Subject | [PATCH v2 1/7] perf metric: Return early if no CPU PMU table exists | From | Ian Rogers <> |
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Previous behavior is to segfault if there is no CPU PMU table and a metric is sought. To reproduce compile with NO_JEVENTS=1 then request a metric, for example, "perf stat -M IPC true".
Fixes: 00facc760903 ("perf jevents: Switch build to use jevents.py") Signed-off-by: Ian Rogers <irogers@google.com> --- tools/perf/util/metricgroup.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c index ad5cacdecd81..18aae040d61d 100644 --- a/tools/perf/util/metricgroup.c +++ b/tools/perf/util/metricgroup.c @@ -1655,6 +1655,9 @@ int metricgroup__parse_groups(const struct option *opt, struct evlist *perf_evlist = *(struct evlist **)opt->value; const struct pmu_events_table *table = pmu_events_table__find(); + if (!table) + return -EINVAL; + return parse_groups(perf_evlist, str, metric_no_group, metric_no_merge, NULL, metric_events, table); } -- 2.37.2.672.g94769d06f0-goog
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