tomoyo: add missing rcu_dereference()
Kees Cook [Fri, 9 Dec 2011 00:30:42 +0000 (16:30 -0800)]
Adds a missed rcu_dereference() around real_parent.

Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>

security/tomoyo/common.h

index ed311d7..cb9f5c2 100644 (file)
@@ -1122,7 +1122,7 @@ static inline pid_t tomoyo_sys_getppid(void)
 {
        pid_t pid;
        rcu_read_lock();
-       pid = task_tgid_vnr(current->real_parent);
+       pid = task_tgid_vnr(rcu_dereference(current->real_parent));
        rcu_read_unlock();
        return pid;
 }