diff --git a/sound/core/jack.c b/sound/core/jack.c
index 503c8af79d550d5c59e4dc523afe926232e370b5..d6502dff247a817063dd1945d976c1b47e14a6f5 100644
--- a/sound/core/jack.c
+++ b/sound/core/jack.c
@@ -220,6 +220,10 @@ int snd_jack_new(struct snd_card *card, const char *id, int type,
 		return -ENOMEM;
 
 	jack->id = kstrdup(id, GFP_KERNEL);
+	if (jack->id == NULL) {
+		kfree(jack);
+		return -ENOMEM;
+	}
 
 	/* don't creat input device for phantom jack */
 	if (!phantom_jack) {