@Patrick Salisbury, As a P.S., If you are able to confirm that Ubuntu 4.10.0-14 is the first version affected, that would be consistent with a hypothesis that the patch series associated with: http://bugs.launchpad.net/bugs/1671613 may be a factor in the regression:
* POWER9: Additional power9 patches (LP: #1671613) - mm/autonuma: don't use set_pte_at when updating protnone ptes - mm/autonuma: let architecture override how the write bit should be stashed in a protnone pte. - powerpc/mm/autonuma: switch ppc64 to its own implementation of saved write - mm/gup: check for protnone only if it is a PTE entry - mm/thp/autonuma: use TNF flag instead of vm fault - SAUCE: powerpc/mm: handle protnone ptes on fork - SAUCE: power/mm: update pte_write and pte_wrprotect to handle savedwrite - mm/ksm: improve deduplication of zero pages with colouring - mm: introduce page_vma_mapped_walk() - mm, ksm: convert write_protect_page() to use page_vma_mapped_walk() - mm/ksm: handle protnone saved writes when making page write protect -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1674838 Title: kernel BUG at /build/linux- 7LGLH_/linux-4.10.0/include/linux/swapops.h:129 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1674838/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs