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[Viktor Pal <1506454@xxxxxxxxxxxxxxxxxx>]

I will update to Ubuntu 15.10 in the next 1-2 weeks. It has a pretty recent kernel (4.2).
If I'm still able to reproduce this issue there I will install the latest kernel from the link.
Will get back with the results.

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https://bugs.launchpad.net/bugs/1506454

Title:
  kswapd kills the whole OS by eaing up resources

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I experience that my desktop (Ubuntu 15.04) gets unresponsive maybe once a week.
  When this happens the whole machine gets unresponsive immediately and only restarting helps.
  It only turns out from the atop logs what happened after the machine was restarted. Atop is configured to run every 30 secs.
  It is visible from the atop logs that kswapd0 is eating up all the CPU resources.
  Strange thing is that this happens despite there is no swap enabled.

  This happens mostly when Virtualbox is running and only a few amount
  of memory is available.

  cat /proc/version_signature 
  Ubuntu 3.19.0-30.34-generic 3.19.8-ckt6

  If you need any addition information please let me know.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.19.0-30-generic 3.19.0-30.34
  ProcVersionSignature: Ubuntu 3.19.0-30.34-generic 3.19.8-ckt6
  Uname: Linux 3.19.0-30-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1.5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  viktor     1636 F.... pulseaudio
   /dev/snd/controlC1:  viktor     1636 F.... pulseaudio
  CurrentDesktop: GNOME-Flashback:Unity
  Date: Thu Oct 15 14:04:37 2015
  HibernationDevice: RESUME=UUID=592359f8-ccbf-4781-8a65-50b258ce63b6
  InstallationDate: Installed on 2015-06-26 (110 days ago)
  InstallationMedia: Ubuntu-GNOME 15.04 "Vivid Vervet" - Release amd64 (20150422)
  IwConfig:
   vpn0      no wireless extensions.
   
   eth1      no wireless extensions.
   
   lo        no wireless extensions.
  MachineType: Hewlett-Packard HP EliteDesk 800 G1 SFF
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-30-generic root=/dev/mapper/system_vg-root_lv ro noprompt persistent quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-30-generic N/A
   linux-backports-modules-3.19.0-30-generic  N/A
   linux-firmware                             1.143.3
  RfKill:
   
  SourcePackage: linux
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/09/2013
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: L01 v02.18
  dmi.board.asset.tag: CZC4033CYV
  dmi.board.name: 1998
  dmi.board.vendor: Hewlett-Packard
  dmi.chassis.asset.tag: CZC4033CYV
  dmi.chassis.type: 4
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnHewlett-Packard:bvrL01v02.18:bd09/09/2013:svnHewlett-Packard:pnHPEliteDesk800G1SFF:pvr:rvnHewlett-Packard:rn1998:rvr:cvnHewlett-Packard:ct4:cvr:
  dmi.product.name: HP EliteDesk 800 G1 SFF
  dmi.sys.vendor: Hewlett-Packard

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