Index: src/sys/geom/label/g_label.c
===================================================================
--- src/sys/geom/label/g_label.c	(revision 214807)
+++ src/sys/geom/label/g_label.c	(working copy)
@@ -275,6 +275,9 @@
 	if (strcmp(pp->geom->class->name, mp->name) == 0)
 		return (NULL);

+	if (pp->mediasize < pp->sectorsize)
+		return (NULL);
+
 	gp = g_new_geomf(mp, "label:taste");
 	gp->start = g_label_start_taste;
 	gp->access = g_label_access_taste;