smack: fix possible use after frees in task_security() callers

[pandora-kernel.git] / security / smack / smack.h

diff --git a/security/smack/smack.h b/security/smack/smack.h
index 2ad0065..bd88b73 100644 (file)
--- a/security/smack/smack.h
+++ b/security/smack/smack.h
@@ -272,6 +272,16 @@ static inline char *smk_of_task(const struct task_smack *tsp)
        return tsp->smk_task;
 }
 
+static inline char *smk_of_task_struct(const struct task_struct *t)
+{
+       char *skp;
+
+       rcu_read_lock();
+       skp = smk_of_task(__task_cred(t)->security);
+       rcu_read_unlock();
+       return skp;
+}
+
 /*
  * Present a pointer to the forked smack label in an task blob.
  */