perf pmu: Use perf_cpu_map__set_nr() in perf_pmu__cpus_match() to allow for refcnt...

One more step to allow for checking reference counting, user after free,
etc.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>
Cc: Dmitriy Vyukov <dvyukov@google.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Riccardo Mancini <rickyman7@gmail.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Stephen Brennan <stephen.s.brennan@oracle.com>
Link: https://lore.kernel.org/ZDb9dycHQ11UIXwx@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 561e261..760c848 100644 (file)
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -2020,8 +2020,8 @@ int perf_pmu__cpus_match(struct perf_pmu *pmu, struct perf_cpu_map *cpus,
                        matched_cpus->map[matched_nr++] = cpu;
        }
 
-       unmatched_cpus->nr = unmatched_nr;
-       matched_cpus->nr = matched_nr;
+       perf_cpu_map__set_nr(unmatched_cpus, unmatched_nr);
+       perf_cpu_map__set_nr(matched_cpus, matched_nr);
        *mcpus_ptr = matched_cpus;
        *ucpus_ptr = unmatched_cpus;
        return 0;