tomoyo: fix memory leak in tomoyo_commit_ok()

When memory used for policy exceeds the quota, tomoyo_memory_ok() return false.
In this case, tomoyo_commit_ok() must call kfree() before returning NULL.
This bug exists since 2.6.35.

Signed-off-by: Xiaochen Wang <wangxiaochen0@gmail.com>
Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/security/tomoyo/memory.c b/security/tomoyo/memory.c
index 297612669c74..42a7b1ba8cbf 100644
--- a/security/tomoyo/memory.c
+++ b/security/tomoyo/memory.c
@@ -75,6 +75,7 @@ void *tomoyo_commit_ok(void *data, const unsigned int size)
                 memset(data, 0, size);
                 return ptr;
         }
+        kfree(ptr);
         return NULL;
 }