Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

perf parse-events: Fix 3 use after frees found with clang ASAN

Browse source 
[ Upstream commit d4953f7ef1a2e87ef732823af35361404d13fea8 ]

Reproducible with a clang asan build and then running perf test in
particular 'Parse event definition strings'.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: clang-built-linux@googlegroups.com
Link: http://lore.kernel.org/lkml/20200314170356.62914-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ian Rogers 2020-03-14 10:03:56 -07:00 committed by Greg Kroah-Hartman
parent 9d8b5dbacd
commit a0100a3630
2 changed files with 3 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
tools/perf/util/evsel.c
View file

@ -1290,6 +1290,7 @@ void perf_evsel__exit(struct perf_evsel *evsel)
thread_map__put(evsel->threads);
zfree(&evsel->group_name);
zfree(&evsel->name);
zfree(&evsel->pmu_name);
perf_evsel__object.fini(evsel);
}

4
tools/perf/util/parse-events.c
View file

@ -1261,7 +1261,7 @@ int parse_events_add_pmu(struct parse_events_state *parse_state,
attr.type = pmu->type;
evsel = __add_event(list, &parse_state->idx, &attr, NULL, pmu, NULL, auto_merge_stats);
if (evsel) {
evsel->pmu_name = name;
evsel->pmu_name = name ? strdup(name) : NULL;
evsel->use_uncore_alias = use_uncore_alias;
return 0;
} else {
@ -1302,7 +1302,7 @@ int parse_events_add_pmu(struct parse_events_state *parse_state,
evsel->snapshot = info.snapshot;
evsel->metric_expr = info.metric_expr;
evsel->metric_name = info.metric_name;
evsel->pmu_name = name;
evsel->pmu_name = name ? strdup(name) : NULL;
evsel->use_uncore_alias = use_uncore_alias;
}