From: Jiri Olsa <jolsa@kernel.org>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: lkml <linux-kernel@vger.kernel.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Ingo Molnar <mingo@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Namhyung Kim <namhyung@kernel.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Michael Petlan <mpetlan@redhat.com>,
Ian Rogers <irogers@google.com>,
Stephane Eranian <eranian@google.com>
Subject: [PATCH 1/2] perf tools: Initialize output buffer in build_id__sprintf
Date: Mon, 2 Nov 2020 00:31:02 +0100 [thread overview]
Message-ID: <20201101233103.3537427-1-jolsa@kernel.org> (raw)
We display garbage for undefined build_id objects,
because we don't initialize the output buffer.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
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
next reply other threads:[~2020-11-01 23:32 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-01 23:31 Jiri Olsa [this message]
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 ` [PATCH 1/2] perf tools: Initialize output buffer in build_id__sprintf Namhyung Kim
2020-11-03 12:15 ` Arnaldo Carvalho de Melo
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