> So I just can say it is very unlikely to be an anonymous page. It is > not slab either. And neither anonymous/page cache nor slab should be > reserved flag set, so it should be some other types. Thanks to both of you. Will get folks to dig deeper into which page they injected the UC error into. That may take a bit as this test runs for a while injecting and recovering until it hits this unhandlable page case. -Tony