@Joseph Salisbury, Hi.
It looks as if the Ubuntu kernel source has diverged from stable in a significant way. In particular, as has already been noted, on 3/10/2017, Canonical cherry-picked several patches from 4.11-pre, apparently relating to: http://bugs.launchpad.net/bugs/1671613 Somewhere in there, I suspect, is the underlying cause of the present BUG. You already tried overlaying an essential fix-up, d75450ff40df0199bf13dfb19f435519ff947138, as suggested in comment #52, and that did appear to improve stability, but not completely resolve the issue for myself and others. Looking at mainline, I see a rather large number of memory memory management-related patches from Kirill A. Shutemov and others that follow ace71a19cec5eb430207c3269d8a2683f0574306 "mm: introduce page_vma_mapped_walk()" from 2/24/2017. It could be that adding one or more of those patches would stabilize the backported series relating to http://bugs.launchpad.net/bugs/1671613. The reason for this note is to observe that the absence of the present BUG in 4.10.x stable may well be due to the absence of the Canonical backported patches, rather than due to some additive fix. Reverting the http://bugs.launchpad.net/bugs/1671613 patch series might be another path to isolating the source of the BUG. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1674838 Title: kernel BUG at /build/linux- 7LGLH_/linux-4.10.0/include/linux/swapops.h:129 Status in linux package in Ubuntu: In Progress Status in linux-hwe-edge package in Ubuntu: In Progress Status in linux source package in Zesty: In Progress Status in linux-hwe-edge source package in Zesty: In Progress Bug description: Randomly, khugepaged process will take 100% CPU, and I can only restart the computer to recover it. Relevant dmesg attached (dmesg_crash.txt). ProblemType: Bug DistroRelease: Ubuntu 17.04 Package: linux-image-4.10.0-14-generic 4.10.0-14.16 ProcVersionSignature: Ubuntu 4.10.0-14.16-generic 4.10.3 Uname: Linux 4.10.0-14-generic x86_64 ApportVersion: 2.20.4-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: mathieu 2221 F.... pulseaudio /dev/snd/pcmC1D0p: mathieu 2221 F...m pulseaudio /dev/snd/controlC1: mathieu 2221 F.... pulseaudio CurrentDesktop: Unity:Unity7 Date: Tue Mar 21 23:03:23 2017 HibernationDevice: RESUME=UUID=67e78e4c-94ee-447c-ae60-4387dae296dd InstallationDate: Installed on 2016-01-31 (415 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160131) MachineType: LENOVO 20344 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-14-generic root=UUID=b982929e-11d0-4984-885c-6c9daba24836 ro noprompt quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.10.0-14-generic N/A linux-backports-modules-4.10.0-14-generic N/A linux-firmware 1.164 SourcePackage: linux UpgradeStatus: Upgraded to zesty on 2017-03-02 (19 days ago) dmi.bios.date: 10/16/2014 dmi.bios.vendor: LENOVO dmi.bios.version: 96CN29WW(V1.15) dmi.board.asset.tag: 31900058WIN dmi.board.name: INVALID dmi.board.vendor: LENOVO dmi.board.version: 31900058WIN dmi.chassis.asset.tag: 31900058WIN dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo Yoga 2 13 dmi.modalias: dmi:bvnLENOVO:bvr96CN29WW(V1.15):bd10/16/2014:svnLENOVO:pn20344:pvrLenovoYoga213:rvnLENOVO:rnINVALID:rvr31900058WIN:cvnLENOVO:ct10:cvrLenovoYoga213: dmi.product.name: 20344 dmi.product.version: Lenovo Yoga 2 13 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1674838/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
