NMI watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [khugepaged:41

[Malin Bruland]

Description: Ubuntu 14.04.3 LTS
Release: 14.04

linux-image-4.2.0-18-generic:
  Installed: 4.2.0-18.22~14.04.1
  Candidate: 4.2.0-18.22~14.04.1
  Version table:
 *** 4.2.0-18.22~14.04.1 0
        500 http://no.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu/ trusty-security/main amd64 Packages
        100 /var/lib/dpkg/status

Not sure how to reproduce this potential bug as this as far as I can see happens at random occasions .

However, when this happens the computer becomes unresponsive and don't take any keyboard input so I can't access tty, mouse cursor is stuck and won't move.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-4.2.0-18-generic 4.2.0-18.22~14.04.1
ProcVersionSignature: Ubuntu 4.2.0-18.22~14.04.1-generic 4.2.3
Uname: Linux 4.2.0-18-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CurrentDesktop: Unity
Date: Wed Nov 25 20:47:42 2015
InstallationDate: Installed on 2015-04-04 (235 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
SourcePackage: linux-lts-wily
UpgradeStatus: No upgrade log present (probably fresh install)

[penalvch (penalvch)]

Malin Bruland, thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command only once, as it will automatically gather debugging information, in a terminal:
apport-collect 1519937

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]