linux-kernel - [PATCH 2/3] tracing/stat: remember to free root node

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Date:	Wed, 27 May 2009 11:04:48 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Frederic Weisbecker <fweisbec@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>
CC:	Ingo Molnar <mingo@...e.hu>, LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 2/3] tracing/stat: remember to free root node

When closing a trace_stat file, we destroy the rbtree constructed during
file open, but there is memory leak that the root node is not freed.

[ Impact: fix memory leak when closing a trace_stat file ]

Signed-off-by: Li Zefan <lizf@...fujitsu.com>
---
 kernel/trace/trace_stat.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/trace/trace_stat.c b/kernel/trace/trace_stat.c
index 8b7420a..a80d947 100644
--- a/kernel/trace/trace_stat.c
+++ b/kernel/trace/trace_stat.c
@@ -60,8 +60,8 @@ static struct rb_node *release_next(struct rb_node *node)
 		return node->rb_right;
 	else {
 		if (!parent)
-			return NULL;
-		if (parent->rb_left == node)
+			;
+		else if (parent->rb_left == node)
 			parent->rb_left = NULL;
 		else
 			parent->rb_right = NULL;
-- 
1.5.4.rc3


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