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Subject[PATCH] perf bench: Fix 2 memory sanitizer warnings
From
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 <irogers@google.com>
---
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
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