StackOverflow at startup from LabelAtom.load

hudson.model.Label.ConverterImpl does Hudson.getInstance().getLabel(reader.getValue()), presumably so there is a singleton instance of each Label type. However, when the Label is a LabelAtom this results in new LabelAtom() which calls load() which unmarshalls the object and returns to the getLabel call in ConverterImpl.. infinite loop, eventual StackOverflow.