diff --git a/[refs] b/[refs]
index e8c4e2766d82..36654109b1b2 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: dfc428b656c4693a2334a8d9865b430beddb562a
+refs/heads/master: a7295898a1d2e501427f557111c2b4bdfc90b1ed
diff --git a/trunk/kernel/taskstats.c b/trunk/kernel/taskstats.c
index a09a54936f19..e19ce1454ee1 100644
--- a/trunk/kernel/taskstats.c
+++ b/trunk/kernel/taskstats.c
@@ -304,7 +304,7 @@ static int add_del_listener(pid_t pid, const struct cpumask *mask, int isadd)
 			listeners = &per_cpu(listener_array, cpu);
 			down_write(&listeners->sem);
 			list_for_each_entry(s2, &listeners->list, list) {
-				if (s2->pid == pid)
+				if (s2->pid == pid && s2->valid)
 					goto exists;
 			}
 			list_add(&s->list, &listeners->list);