linux-kernel - Re: [PATCH] perf bench: Fix memory leaks.

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Date:   Mon, 8 Nov 2021 10:57:25 -0800
From:   Ian Rogers <irogers@...gle.com>
To:     Sohaib Mohamed <sohaib.amhmd@...il.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Pierre Gondois <Pierre.Gondois@....com>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] perf bench: Fix memory leaks.

On Sun, Nov 7, 2021 at 8:49 PM Sohaib Mohamed <sohaib.amhmd@...il.com> wrote:
>
> ASan reports memory leaks while running:
>
> $ perf bench sched all
>
> Signed-off-by: Sohaib Mohamed <sohaib.amhmd@...il.com>

Acked-by: Ian Rogers <irogers@...gle.com>

I think you can add:
Fixes: e27454cc6352c ("perf bench: Add sched-messaging.c: Benchmark
for scheduler and IPC mechanisms based on hackbench")

This will then get the fix backported to older stable perf commands.

Thanks,
Ian

> ---
>  tools/perf/bench/sched-messaging.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/tools/perf/bench/sched-messaging.c b/tools/perf/bench/sched-messaging.c
> index 488f6e6ba1a5..fa0ff4ce2b74 100644
> --- a/tools/perf/bench/sched-messaging.c
> +++ b/tools/perf/bench/sched-messaging.c
> @@ -223,6 +223,8 @@ 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 */
> @@ -239,6 +241,8 @@ 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;
>  }
> --
> 2.25.1
>