On Sun, Feb 23, 2014 at 08:04:56AM -0500, Sasha Levin wrote: ... > And here it is: > > [ 755.524966] page:ffffea0000000000 count:0 mapcount:1 mapping: (null) index:0x0 > [ 755.526067] page flags: 0x0() > > Followed by the same stack trace as before. Thanks. It seems that this page is pfn 0, so we might have invalid value on page table entry (pointing to pfn 0.) In this -next tree we have some update around hugetlb fault code (like "mm, hugetlb: improve page-fault scalability",) so I'll check there could be a race window from this viewpoint. Naoya -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>