On Mon, Aug 24, 2020 at 03:14:55PM +0530, Naresh Kamboju wrote: > [ 67.545247] BUG: Bad page state in process true pfn:a8fed > [ 67.550767] page:9640c0ab refcount:0 mapcount:-1024 Somebody freed a page table without calling __ClearPageTable() on it.