From e4727b26cd5c972a1688e23c877538ccdd5513be Mon Sep 17 00:00:00 2001
From: Chen Gang <gang.chen@asianux.com>
Date: Mon, 29 Apr 2013 15:05:19 -0700
Subject: kernel/audit_tree.c: tree will leak memory when failure occurs in
 audit_trim_trees()

commit 12b2f117f3bf738c1a00a6f64393f1953a740bd4 upstream.

audit_trim_trees() calls get_tree().  If a failure occurs we must call
put_tree().

[akpm@linux-foundation.org: run put_tree() before mutex_lock() for small scalability improvement]
Signed-off-by: Chen Gang <gang.chen@asianux.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Eric Paris <eparis@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 kernel/audit_tree.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/audit_tree.c b/kernel/audit_tree.c
index 31fdc480b5c..0caf1f8de0f 100644
--- a/kernel/audit_tree.c
+++ b/kernel/audit_tree.c
@@ -608,9 +608,9 @@ void audit_trim_trees(void)
 		}
 		spin_unlock(&hash_lock);
 		trim_marked(tree);
-		put_tree(tree);
 		drop_collected_mounts(root_mnt);
 skip_it:
+		put_tree(tree);
 		mutex_lock(&audit_filter_mutex);
 	}
 	list_del(&cursor);
-- 
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