perf evsel: Ensure reserved member of PERF_SAMPLE_CPU is zero in perf_event__synthesi...

PERF_SAMPLE_CPU contains the cpu number in the first 4 bytes and the
second 4 bytes are reserved. Ensure the reserved bytes are zero in
perf_event__synthesize_sample().

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1516108492-21401-3-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 85eb84dfdf917d265db80a29c85cb7aa810056f1..44032679180fde5f9848f9bdac36d866f71ad145 100644 (file)
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -2533,6 +2533,7 @@ int perf_event__synthesize_sample(union perf_event *event, u64 type,
 
        if (type & PERF_SAMPLE_CPU) {
                u.val32[0] = sample->cpu;
+               u.val32[1] = 0;
                if (swapped) {
                        /*
                         * Inverse of what is done in perf_evsel__parse_sample