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    Subject[PATCH 36/91] libperf evlist: Fix a refcount leak
    Date
    From: Ian Rogers <irogers@google.com>

    Memory leaks found by applying LLVM's libfuzzer on the tools/perf
    parse_events function.

    Signed-off-by: Ian Rogers <irogers@google.com>
    Cc: Adrian Hunter <adrian.hunter@intel.com>
    Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
    Cc: Andi Kleen <ak@linux.intel.com>
    Cc: Jiri Olsa <jolsa@redhat.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/20200319023101.82458-2-irogers@google.com
    [ Did a minor adjustment due to some other previous patch having already set evlist->all_cpus to NULL at perf_evlist__exit() ]
    Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
    ---
    tools/lib/perf/evlist.c | 1 +
    1 file changed, 1 insertion(+)

    diff --git a/tools/lib/perf/evlist.c b/tools/lib/perf/evlist.c
    index c481b62f2ce4..6a875a0f01bb 100644
    --- a/tools/lib/perf/evlist.c
    +++ b/tools/lib/perf/evlist.c
    @@ -123,6 +123,7 @@ 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;
    --
    2.21.1
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