commit 2053c4727c5a891bf182397e425b6cb87b2ae613
author Kees Cook <keescook@chromium.org> Thu Dec 08 16:25:48 2011 -0800
committer James Morris <jmorris@namei.org> Fri Dec 09 12:08:41 2011 +1100
tree 531090ac23e90b4aa64416a62c4625ffffec181f
parent 143b01d33221e4937d3930e6bb2b63d70b7c7a65

apparmor: add missing rcu_dereference()

Adds a missed rcu_dereference() around real_parent.

Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: James Morris <jmorris@namei.org>

security/apparmor/audit.c

diff --git a/security/apparmor/audit.c b/security/apparmor/audit.c
index 96502b2..f3fafed 100644
--- a/security/apparmor/audit.c
+++ b/security/apparmor/audit.c
@@ -133,7 +133,7 @@
 		struct aa_profile *profile = sa->aad.profile;
 		pid_t pid;
 		rcu_read_lock();
-		pid = tsk->real_parent->pid;
+		pid = rcu_dereference(tsk->real_parent)->pid;
 		rcu_read_unlock();
 		audit_log_format(ab, " parent=%d", pid);
 		if (profile->ns != root_ns) {