tomoyo: add missing rcu_dereference()

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>
openrisc · Dec 12, 2011 · bb80d88 · bb80d88
1 parent 2053c47
commit bb80d88
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/security/tomoyo/common.h b/security/tomoyo/common.h
@@ -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;
 }