On Fri, Sep 11, 2020 at 10:37:25PM -0700, Ian Rogers wrote: > Memory sanitizer warns if a write is performed where the memory > being read for the write is uninitialized. Avoid this warning by > initializing the memory. > > Signed-off-by: Ian Rogers <irog...@google.com>
Acked-by: Jiri Olsa <jo...@redhat.com> thanks, jirka > --- > tools/perf/bench/sched-messaging.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/tools/perf/bench/sched-messaging.c > b/tools/perf/bench/sched-messaging.c > index 71d830d7b923..cecce93ccc63 100644 > --- a/tools/perf/bench/sched-messaging.c > +++ b/tools/perf/bench/sched-messaging.c > @@ -66,11 +66,10 @@ static void fdpair(int fds[2]) > /* Block until we're ready to go */ > static void ready(int ready_out, int wakefd) > { > - char dummy; > struct pollfd pollfd = { .fd = wakefd, .events = POLLIN }; > > /* Tell them we're ready. */ > - if (write(ready_out, &dummy, 1) != 1) > + if (write(ready_out, "R", 1) != 1) > err(EXIT_FAILURE, "CLIENT: ready write"); > > /* Wait for "GO" signal */ > @@ -85,6 +84,7 @@ static void *sender(struct sender_context *ctx) > unsigned int i, j; > > ready(ctx->ready_out, ctx->wakefd); > + memset(data, 'S', sizeof(data)); > > /* Now pump to every receiver. */ > for (i = 0; i < nr_loops; i++) { > -- > 2.28.0.618.gf4bc123cb7-goog >