linux-kernel - [tip:perf/core] perf config: Handle NULL at perf_config_set_

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Message-ID: <tip-826424cc919529d6d234af12c6ba975b63528a74@git.kernel.org>
Date:	Thu, 16 Jun 2016 01:31:05 -0700
From:	tip-bot for Taeung Song <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	tglx@...utronix.de, peterz@...radead.org, wangnan0@...wei.com,
	mingo@...nel.org, treeze.taeung@...il.com,
	alexander.shishkin@...ux.intel.com, acme@...hat.com,
	jolsa@...hat.com, linux-kernel@...r.kernel.org,
	namhyung@...nel.org, hpa@...or.com, mhiramat@...nel.org
Subject: [tip:perf/core] perf config: Handle NULL at
 perf_config_set__delete()

Commit-ID:  826424cc919529d6d234af12c6ba975b63528a74
Gitweb:     http://git.kernel.org/tip/826424cc919529d6d234af12c6ba975b63528a74
Author:     Taeung Song <treeze.taeung@...il.com>
AuthorDate: Wed, 8 Jun 2016 21:36:49 +0900
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Tue, 14 Jun 2016 09:29:53 -0300

perf config: Handle NULL at perf_config_set__delete()

perf_config_set__delete() purge and free the config set that contains
all config key-value pairs.  But if the config set (i.e. 'set' variable
at the function) is NULL, this is wrong so handle it.

Signed-off-by: Taeung Song <treeze.taeung@...il.com>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Masami Hiramatsu <mhiramat@...nel.org>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Wang Nan <wangnan0@...wei.com>
Link: http://lkml.kernel.org/r/1465389413-8936-2-git-send-email-treeze.taeung@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/config.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 8749eca..31e09a4 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -742,6 +742,9 @@ static void perf_config_set__purge(struct perf_config_set *set)
 
 void perf_config_set__delete(struct perf_config_set *set)
 {
+	if (set == NULL)
+		return;
+
 	perf_config_set__purge(set);
 	free(set);
 }