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Message-Id: <1485753819-12857-2-git-send-email-treeze.taeung@gmail.com>
Date: Mon, 30 Jan 2017 14:23:39 +0900
From: Taeung Song <treeze.taeung@...il.com>
To: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: linux-kernel@...r.kernel.org, Jiri Olsa <jolsa@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Ingo Molnar <mingo@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Wang Nan <wangnan0@...wei.com>,
Taeung Song <treeze.taeung@...il.com>,
Jiri Olsa <jolsa@...hat.com>
Subject: [PATCH 2/2] perf evsel: Check for NULL before perf_evsel__is_bpf_output()
If 'evsel' is NULL, in perf_evsel__is_bpf_output()
NULL pointer error can happen so check it.
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Signed-off-by: Taeung Song <treeze.taeung@...il.com>
---
tools/perf/util/evsel.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 04e536a..b77da72 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -242,8 +242,10 @@ struct perf_evsel *perf_evsel__new_idx(struct perf_event_attr *attr, int idx)
{
struct perf_evsel *evsel = zalloc(perf_evsel__object.size);
- if (evsel != NULL)
- perf_evsel__init(evsel, attr, idx);
+ if (!evsel)
+ return NULL;
+
+ perf_evsel__init(evsel, attr, idx);
if (perf_evsel__is_bpf_output(evsel)) {
evsel->attr.sample_type |= (PERF_SAMPLE_RAW | PERF_SAMPLE_TIME |
--
2.7.4
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