D13746.id38524.diff
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D13746.id38524.diff
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	Index: head/sys/geom/label/g_label.c
	===================================================================
	--- head/sys/geom/label/g_label.c
	+++ head/sys/geom/label/g_label.c
	@@ -200,6 +200,7 @@
	struct g_provider *pp2;
	struct g_consumer *cp;
	char name[64];
	+ int n;

	g_topology_assert();

	@@ -213,7 +214,12 @@
	}
	gp = NULL;
	cp = NULL;
	- snprintf(name, sizeof(name), "%s/%s", dir, label);
	+ n = snprintf(name, sizeof(name), "%s/%s", dir, label);
	+ if (n >= sizeof(name)) {
	+ if (req != NULL)
	+ gctl_error(req, "Label name %s is too long.", label);
	+ return (NULL);
	+ }
	LIST_FOREACH(gp, &mp->geom, geom) {
	pp2 = LIST_FIRST(&gp->provider);
	if (pp2 == NULL)