diff --git a/kernel/relay.c b/kernel/relay.c
index 5034cb3a339f..3623ad9b529c 100644
--- a/kernel/relay.c
+++ b/kernel/relay.c
@@ -196,6 +196,7 @@ free_buf:
 static void relay_destroy_channel(struct kref *kref)
 {
 	struct rchan *chan = container_of(kref, struct rchan, kref);
+	free_percpu(chan->buf);
 	kfree(chan);
 }