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perf metric: Fix some memory leaks

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I found some memory leaks while reading the metric code.  Some are real
and others only occur in the error path.  When it failed during metric
or event parsing, it should release all resources properly.

Fixes: b18f3e3650 ("perf stat: Support JSON metrics in perf stat")
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20200915031819.386559-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2020-09-15 12:18:09 +09:00 committed by Arnaldo Carvalho de Melo
parent 22fe5a25b5
commit 4f57a1ed74
1 changed files with 5 additions and 2 deletions
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7
tools/perf/util/metricgroup.c
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@ -530,6 +530,9 @@ void metricgroup__print(bool metrics, bool metricgroups, char *filter,
continue;
strlist__add(me->metrics, s);
}
if (!raw)
free(s);
}
free(omg);
}
@ -1040,7 +1043,7 @@ static int parse_groups(struct evlist *perf_evlist, const char *str,
ret = metricgroup__add_metric_list(str, metric_no_group,
&extra_events, &metric_list, map);
if (ret)
return ret;
goto out;
pr_debug("adding %s\n", extra_events.buf);
bzero(&parse_error, sizeof(parse_error));
ret = __parse_events(perf_evlist, extra_events.buf, &parse_error, fake_pmu);
@ -1048,11 +1051,11 @@ static int parse_groups(struct evlist *perf_evlist, const char *str,
parse_events_print_error(&parse_error, extra_events.buf);
goto out;
}
strbuf_release(&extra_events);
ret = metricgroup__setup_events(&metric_list, metric_no_merge,
perf_evlist, metric_events);
out:
metricgroup__free_metrics(&metric_list);
strbuf_release(&extra_events);
return ret;
}