Comment # 17 on bug 1039737 from Vlastimil Babka

(In reply to Jochen Hansper from comment #16)
> I get lots of these now:

Weird, this part of the second patch should be preventing these errors:

-#if !defined(CONFIG_DEBUG_PAGEALLOC) && !defined(CONFIG_KMEMCHECK)
+#if !defined(CONFIG_DEBUG_PAGEALLOC) && !defined(CONFIG_KMEMCHECK) && 0

Does your dmesg after boot contain the string "Using GB pages for direct
mapping" ?