Hi Ian, On Fri, Jan 15, 2021 at 6:23 AM Ian Rogers <irog...@google.com> wrote: > > The variable bf is read (for a write call) without being initialized > triggering a memory sanitizer warning. Use bf in the read and switch the > write to reading from a string. > > Signed-off-by: Ian Rogers <irog...@google.com>
Acked-by: Namhyung Kim <namhy...@kernel.org> Thanks, Namhyung > --- > tools/lib/perf/tests/test-evlist.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/tools/lib/perf/tests/test-evlist.c > b/tools/lib/perf/tests/test-evlist.c > index 6d8ebe0c2504..1b225fe34a72 100644 > --- a/tools/lib/perf/tests/test-evlist.c > +++ b/tools/lib/perf/tests/test-evlist.c > @@ -208,7 +208,6 @@ static int test_mmap_thread(void) > char path[PATH_MAX]; > int id, err, pid, go_pipe[2]; > union perf_event *event; > - char bf; > int count = 0; > > snprintf(path, PATH_MAX, > "%s/kernel/debug/tracing/events/syscalls/sys_enter_prctl/id", > @@ -229,6 +228,7 @@ static int test_mmap_thread(void) > pid = fork(); > if (!pid) { > int i; > + char bf; > > read(go_pipe[0], &bf, 1); > > @@ -266,7 +266,7 @@ static int test_mmap_thread(void) > perf_evlist__enable(evlist); > > /* kick the child and wait for it to finish */ > - write(go_pipe[1], &bf, 1); > + write(go_pipe[1], "A", 1); > waitpid(pid, NULL, 0); > > /* > -- > 2.30.0.296.g2bfb1c46d8-goog >