I'm now able to produce this pretty reliably with 4.10.0-20.22. My testing shows that the "POWER9: Additional power9 patches" patches are responsible, two of them in particular:
- mm: introduce page_vma_mapped_walk() - mm, ksm: convert write_protect_page() to use page_vma_mapped_walk() These patches don't appear to be included for any functionality they provide, but rather to make "mm/ksm: handle protnone saved writes when making page write protect" a clean cherry pick instead of a backport. But the backport isn't that difficult, so as far as I can tell we can do away with the other two patches. I've built 4.10.0-20.22 with just those changes - reverting all three of the above patches then backporting the one which is actually needed - and I'm no longer able to reproduce this bug. Everyone, please give it a try and let me know whether or not you still see problems. http://people.canonical.com/~sforshee/lp1674838/ -- 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
