opts.release_agent is not kfree()ed in all necessary places.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
---
 kernel/cgroup.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 0c35022..aa76bbd 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -961,8 +961,11 @@ static int cgroup_get_sb(struct file_system_type *fs_type,
 	}
 
 	root = kzalloc(sizeof(*root), GFP_KERNEL);
-	if (!root)
+	if (!root) {
+		if (opts.release_agent)
+			kfree(opts.release_agent);
 		return -ENOMEM;
+	}
 
 	init_cgroup_root(root);
 	root->subsys_bits = opts.subsys_bits;
-- 
1.5.4.rc3

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