--- a/sys/dev/sound/pci/vibes.c
+++ b/sys/dev/sound/pci/vibes.c
@@ -726,6 +726,7 @@
 	u_int32_t	data;
 	char		status[SND_STATUSLEN];
 	u_long		midi_start, games_start, count, sdmaa, sdmac, ml, mu;
+	int		mixer_inited = 0;
 
 	sc = kmalloc(sizeof(*sc), M_DEVBUF, M_WAITOK | M_ZERO);
 	sc->dev = dev;
@@ -745,6 +746,7 @@
 					  SV_PCI_ENHANCED_SIZE, RF_ACTIVE);
 	if (sc->enh_reg == NULL) {
 		device_printf(dev, "sv_attach: cannot allocate enh\n");
+		kfree(sc, M_DEVBUF);
 		return ENXIO;
 	}
 	sc->enh_st = rman_get_bustag(sc->enh_reg);
@@ -790,6 +792,7 @@
 		device_printf(dev, "sv_attach: Mixer failed to initialize\n");
 		goto fail;
 	}
+	mixer_inited = 1;
 
 	/* XXX This is a hack, and it's ugly.  Okay, the deal is this
 	 * card has two more io regions that available for automatic
@@ -886,6 +889,9 @@
 	return 0;
 
  fail:
+	if (mixer_inited)
+		mixer_uninit(dev);	/* destroy the live /dev/mixerN before its
+					 * devinfo (sc) loses its bus resources */
 	if (sc->parent_dmat)
 		bus_dma_tag_destroy(sc->parent_dmat);
         if (sc->ih)
@@ -898,6 +904,7 @@
 		bus_release_resource(dev, sc->dmaa_type, sc->dmaa_rid, sc->dmaa_reg);
 	if (sc->dmac_reg)
 		bus_release_resource(dev, sc->dmac_type, sc->dmac_rid, sc->dmac_reg);
+	kfree(sc, M_DEVBUF);
 	return ENXIO;
 }