[PATCH] tomoyo: add missing rcu_dereference()

[Kees Cook]

Adds a missed rcu_dereference() around real_parent.

Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
---
 security/tomoyo/common.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/security/tomoyo/common.h b/security/tomoyo/common.h
index ed311d7..cb9f5c2 100644
--- 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;
 }
-- 
1.7.0.4

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