Hi, Sasha

On Mon, Nov 22, 2021 at 1:25 AM Sasha Levin sashal@kernel.org wrote:

This is a note to let you know that I've just added the patch titled

perf bench: Fix two memory leaks detected with ASan

to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: perf-bench-fix-two-memory-leaks-detected-with-asan.patch and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

I think this patch should not be added to the stable tree. I think this patch should be reverted soon.

Thanks, - Sohaib

commit b1c29e2248629770cee7ac88cb9dfea91e07146b Author: Sohaib Mohamed sohaib.amhmd@gmail.com Date: Wed Nov 10 04:20:11 2021 +0200

perf bench: Fix two memory leaks detected with ASan

[ Upstream commit 92723ea0f11d92496687db8c9725248e9d1e5e1d ]

ASan reports memory leaks while running:

  $ perf bench sched all

Fixes: e27454cc6352c422 ("perf bench: Add sched-messaging.c: Benchmark for scheduler and IPC mechanisms based on hackbench")
Signed-off-by: Sohaib Mohamed <sohaib.amhmd@gmail.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Hitoshi Mitake <h.mitake@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Russel <rusty@rustcorp.com.au>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Pierre Gondois <pierre.gondois@arm.com>
Link: http://lore.kernel.org/lkml/20211110022012.16620-1-sohaib.amhmd@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/tools/perf/bench/sched-messaging.c b/tools/perf/bench/sched-messaging.c index 6a111e775210f..9322fd166bdaf 100644 --- a/tools/perf/bench/sched-messaging.c +++ b/tools/perf/bench/sched-messaging.c @@ -225,6 +225,8 @@ static unsigned int group(pthread_t *pth, snd_ctx->out_fds[i] = fds[1]; if (!thread_mode) close(fds[0]);

•           free(ctx);
    }
  
    /* Now we have all the fds, fork the senders */
  

@@ -241,6 +243,8 @@ static unsigned int group(pthread_t *pth, for (i = 0; i < num_fds; i++) close(snd_ctx->out_fds[i]);

•   free(snd_ctx);
  

•   /* Return number of children to reap */
    return num_fds * 2;
  

}