diff --git a/[refs] b/[refs]
index 29946da7455d..affecab8c497 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2053c4727c5a891bf182397e425b6cb87b2ae613
+refs/heads/master: bb80d880ad2b11cd4ea5f28f815016b1548224a4
diff --git a/trunk/security/tomoyo/common.h b/trunk/security/tomoyo/common.h
index ed311d7a8ce0..cb9f5c2d6f3a 100644
--- a/trunk/security/tomoyo/common.h
+++ b/trunk/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;
 }