On Thu, Jan 14, 2021 at 01:23:04PM -0800, Ian Rogers 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: Jiri Olsa <jo...@redhat.com>
thanks,
jirka
> ---
> 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
>
