commit bb80d880ad2b11cd4ea5f28f815016b1548224a4
author Kees Cook <keescook@chromium.org> Thu Dec 08 16:30:42 2011 -0800
committer James Morris <jmorris@namei.org> Mon Dec 12 17:21:40 2011 +1100
tree 70ab38ab2d388f39efd9cd4f7f91859f0f3cf5e2
parent 2053c4727c5a891bf182397e425b6cb87b2ae613

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>

security/tomoyo/common.h

diff --git a/security/tomoyo/common.h b/security/tomoyo/common.h
index ed311d7..cb9f5c2d 100644
--- a/security/tomoyo/common.h
+++ b/security/tomoyo/common.h
@@ -1122,7 +1122,7 @@
 {
 	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;
 }