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perf evsel: Ensure reserved member of PERF_SAMPLE_CPU is zero in perf_event__synthesize_sample() 

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>
This commit is contained in:
Adrian Hunter 2018-01-16 15:14:51 +02:00 committed by Arnaldo Carvalho de Melo
parent a10eb530ae
commit 59a87fdad1
1 changed files with 1 additions and 0 deletions
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tools/perf/util/evsel.c
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@ -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