diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 9d6431d13c98..3b13d9e4030a 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1569,6 +1569,7 @@ drop:
 	rcu_read_lock();
 	if (unlikely(!(tun->dev->flags & IFF_UP))) {
 		err = -EIO;
+		rcu_read_unlock();
 		goto drop;
 	}