linux-kernel - [PATCH 1/2] perf tools: Fix memory leak in read_ftrace

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Message-ID: <4AB1F48F.4070807@cn.fujitsu.com>
Date:	Thu, 17 Sep 2009 16:34:23 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Frederic Weisbecker <fweisbec@...il.com>,
	Peter Zijlstra <peterz@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 1/2] perf tools: Fix memory leak in read_ftrace_printk()

get_tracing_file() should be paired with put_tracing_file().

Signed-off-by: Li Zefan <lizf@...fujitsu.com>
---
 tools/perf/util/trace-event-info.c |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/trace-event-info.c b/tools/perf/util/trace-event-info.c
index 6c9302a..1fd824c 100644
--- a/tools/perf/util/trace-event-info.c
+++ b/tools/perf/util/trace-event-info.c
@@ -458,7 +458,7 @@ static void read_proc_kallsyms(void)
 static void read_ftrace_printk(void)
 {
 	unsigned int size, check_size;
-	const char *path;
+	char *path;
 	struct stat st;
 	int ret;
 
@@ -468,14 +468,15 @@ static void read_ftrace_printk(void)
 		/* not found */
 		size = 0;
 		write_or_die(&size, 4);
-		return;
+		goto out;
 	}
 	size = get_size(path);
 	write_or_die(&size, 4);
 	check_size = copy_file(path);
 	if (size != check_size)
 		die("error in size of file '%s'", path);
-
+out:
+	put_tracing_file(path);
 }
 
 static struct tracepoint_path *
-- 
1.6.3

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