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libperf evlist: Fix a refcount leak

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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>
This commit is contained in:
Ian Rogers 2020-03-18 19:31:01 -07:00 committed by Arnaldo Carvalho de Melo
parent ba08829aac
commit 4599d29212
1 changed files with 1 additions and 0 deletions
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tools/lib/perf/evlist.c
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@ -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;