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Subject[PATCH] perf parse-events: fix memory leaks found on parse_events
From
Memory leaks found by applying LLVM's libfuzzer on the parse_events
function.

Signed-off-by: Ian Rogers <irogers@google.com>
---
tools/lib/perf/evlist.c | 2 ++
tools/perf/util/parse-events.c | 2 ++
tools/perf/util/parse-events.y | 3 ++-
3 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/tools/lib/perf/evlist.c b/tools/lib/perf/evlist.c
index 5b9f2ca50591..6485d1438f75 100644
--- a/tools/lib/perf/evlist.c
+++ b/tools/lib/perf/evlist.c
@@ -125,8 +125,10 @@ static void perf_evlist__purge(struct perf_evlist *evlist)
void perf_evlist__exit(struct perf_evlist *evlist)
{
perf_cpu_map__put(evlist->cpus);
+ perf_cpu_map__put(evlist->all_cpus);
perf_thread_map__put(evlist->threads);
evlist->cpus = NULL;
+ evlist->all_cpus = NULL;
evlist->threads = NULL;
fdarray__exit(&evlist->pollfd);
}
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index a14995835d85..997862224292 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -1482,6 +1482,8 @@ int parse_events_add_pmu(struct parse_events_state *parse_state,

list_for_each_entry_safe(pos, tmp, &config_terms, list) {
list_del_init(&pos->list);
+ if (pos->free_str)
+ free(pos->val.str);
free(pos);
}
return -EINVAL;
diff --git a/tools/perf/util/parse-events.y b/tools/perf/util/parse-events.y
index 94f8bcd83582..8212cc771667 100644
--- a/tools/perf/util/parse-events.y
+++ b/tools/perf/util/parse-events.y
@@ -44,7 +44,7 @@ static void free_list_evsel(struct list_head* list_evsel)

list_for_each_entry_safe(evsel, tmp, list_evsel, core.node) {
list_del_init(&evsel->core.node);
- perf_evsel__delete(evsel);
+ evsel__delete(evsel);
}
free(list_evsel);
}
@@ -326,6 +326,7 @@ PE_NAME opt_pmu_config
}
parse_events_terms__delete($2);
parse_events_terms__delete(orig_terms);
+ free(pattern);
free($1);
$$ = list;
#undef CLEANUP_YYABORT
--
2.25.1.481.gfbce0eb801-goog
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