Index: usr.sbin/memcontrol/memcontrol.c
===================================================================
--- usr.sbin/memcontrol/memcontrol.c
+++ usr.sbin/memcontrol/memcontrol.c
@@ -302,6 +302,7 @@
 		    warn("couldn't clear range owned by '%s'", owner);
 	    }
 	}
+	free(owner);
     } else if (mrd.mr_len != 0) {
 	/* clear-by-base/len */
 	mro.mo_arg[0] = MEMRANGE_SET_REMOVE;