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From: Namhyung Kim <namhyung@kernel.org>
To: Jiri Olsa <jolsa@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>,
	lkml <linux-kernel@vger.kernel.org>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Ingo Molnar <mingo@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Michael Petlan <mpetlan@redhat.com>,
	Ian Rogers <irogers@google.com>,
	Stephane Eranian <eranian@google.com>
Subject: Re: [PATCH 1/2] perf tools: Initialize output buffer in build_id__sprintf
Date: Mon, 2 Nov 2020 22:50:00 +0900	[thread overview]
Message-ID: <CAM9d7cj6mfLuZYsXzAP+JBTuRC9F74AxmGbCL2_wyxRWoau-tA@mail.gmail.com> (raw)
In-Reply-To: <20201101233103.3537427-1-jolsa@kernel.org>

Hi Jiri,

On Mon, Nov 2, 2020 at 8:31 AM Jiri Olsa <jolsa@kernel.org> wrote:
>
> We display garbage for undefined build_id objects,
> because we don't initialize the output buffer.
>
> Signed-off-by: Jiri Olsa <jolsa@kernel.org>

Acked-by: Namhyung Kim <namhyung@kernel.org>

Thanks
Namhyung


> ---
>  tools/perf/util/build-id.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c
> index 8763772f1095..6b410c3d52dc 100644
> --- a/tools/perf/util/build-id.c
> +++ b/tools/perf/util/build-id.c
> @@ -102,6 +102,8 @@ int build_id__sprintf(const struct build_id *build_id, char *bf)
>         const u8 *raw = build_id->data;
>         size_t i;
>
> +       bf[0] = 0x0;
> +
>         for (i = 0; i < build_id->size; ++i) {
>                 sprintf(bid, "%02x", *raw);
>                 ++raw;
> --
> 2.26.2
>

  parent reply	other threads:[~2020-11-02 13:51 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-01 23:31 [PATCH 1/2] perf tools: Initialize output buffer in build_id__sprintf Jiri Olsa
2020-11-01 23:31 ` [PATCH 2/2] perf tools: Add missing swap for ino_generation Jiri Olsa
2020-11-02 13:50   ` Namhyung Kim
2020-11-02 13:50 ` Namhyung Kim [this message]
2020-11-03 12:15   ` [PATCH 1/2] perf tools: Initialize output buffer in build_id__sprintf Arnaldo Carvalho de Melo

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