diff options
authorGustavo A. R. Silva <gustavo@embeddedor.com>2019-01-22 17:34:39 -0600
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-02-12 19:45:02 +0100
commit7231ec1770e52b45a305356d40630e51f21a4f98 (patch)
parent9269ba3cb74c97cea89c9347042a0d89e4f4b0fc (diff)
perf tests evsel-tp-sched: Fix bitwise operator
commit 489338a717a0dfbbd5a3fabccf172b78f0ac9015 upstream. Notice that the use of the bitwise OR operator '|' always leads to true in this particular case, which seems a bit suspicious due to the context in which this expression is being used. Fix this by using bitwise AND operator '&' instead. This bug was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: stable@vger.kernel.org Fixes: 6a6cd11d4e57 ("perf test: Add test for the sched tracepoint format fields") Link: http://lkml.kernel.org/r/20190122233439.GA5868@embeddedor Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/tests/evsel-tp-sched.c b/tools/perf/tests/evsel-tp-sched.c
index 1984b3bbfe15..66b53f10eb18 100644
--- a/tools/perf/tests/evsel-tp-sched.c
+++ b/tools/perf/tests/evsel-tp-sched.c
@@ -16,7 +16,7 @@ static int perf_evsel__test_field(struct perf_evsel *evsel, const char *name,
return -1;
- is_signed = !!(field->flags | FIELD_IS_SIGNED);
+ is_signed = !!(field->flags & FIELD_IS_SIGNED);
if (should_be_signed && !is_signed) {
pr_debug("%s: \"%s\" signedness(%d) is wrong, should be %d\n",
evsel->name, name, is_signed, should_be_signed);