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[Po-Hsu Lin <po-hsu.lin@xxxxxxxxxxxxx>]

Verified again with this system re-installed, this issue still 100%
reproducible on 3.2.0-99.

Steps:
1. Re-install the system with --proposed. 
2. Run the gpu_lockup_after_suspend on it.

Result:
* For the very beginning, when it crashes on the gpu_lockup_after_suspend job, it will reboot itself automatically.
And I finally see this error message:
Unable to handle kernel paging request.

When this happens
* Caps Lock LED was not blinking.
* the system seems frozen, it does not react to NumLock / CapsLock / VT switching and ssh connection.
* system can still take the magic key to reboot (Ctrl + Alt + PrtScn + b)
(I think the kernel is still alive, so the error can be logged)


** Attachment added: "paging-request-2016-Feb-19.jpg"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1546985/+attachment/4575367/+files/IMG_20160218_171801.jpg

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https://bugs.launchpad.net/bugs/1546985

Title:
   BUG: unable to handle kernel paging request at ffff87ffb88dbf18

Status in linux package in Ubuntu:
  Confirmed
Status in linux source package in Precise:
  New

Bug description:
  CID: 201011-6701

  Potential kernel regression found on this system while testing with 3.2.0-99-generic #139
  It will hang after the suspend/gpu_lockup_after_suspend test case

  Step:
  1. Install the system with satellite provisioning, with --proposed and the sru toolset
  2. Let it run for the SRU tests, or reproduce it manually with "plainbox run -i 'suspend/gpu_lockup_after_suspend'"

  The error message will pop up
   BUG: unable to handle kernel paging request at ffff87ffb88dbf18
  (This can be found in kern.log)

  Another type of error message is:
   BUG: unable to handle kernel NULL pointer dereference at 0000000000000033
  (This can't be found in kern.log)

  Please see the attachment for screenshots

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: linux-image-3.2.0-99-generic 3.2.0-99.139
  ProcVersionSignature: Ubuntu 3.2.0-99.139-generic 3.2.76
  Uname: Linux 3.2.0-99-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu17.14
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ubuntu     1767 F.... pulseaudio
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xf0420000 irq 44'
     Mixer name	: 'Intel IbexPeak HDMI'
     Components	: 'HDA:10ec0662,103c304b,00100101 HDA:80862804,103c304b,00100000'
     Controls      : 30
     Simple ctrls  : 13
  CurrentDmesg:
   [   25.233981] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
   [   35.533182] eth0: no IPv6 routers present
  Date: Thu Feb 18 06:18:23 2016
  HibernationDevice: RESUME=UUID=e3ead356-ab02-4971-ad9c-7eba91da86e7
  InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
  IwConfig:
   lo        no wireless extensions.
   
   eth0      no wireless extensions.
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-99-generic root=UUID=f52105b5-6ded-4d73-95ce-582d2bb3d82c ro quiet splash initcall_debug vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-99-generic N/A
   linux-backports-modules-3.2.0-99-generic  N/A
   linux-firmware                            1.79.18
  RfKill:
   
  SourcePackage: linux
  StagingDrivers: mei
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/19/2010
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: 786H1 v01.07
  dmi.board.name: 304Bh
  dmi.board.vendor: Hewlett-Packard
  dmi.chassis.type: 6
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnHewlett-Packard:bvr786H1v01.07:bd10/19/2010:svnHewlett-Packard:pn:pvr:rvnHewlett-Packard:rn304Bh:rvr:cvnHewlett-Packard:ct6:cvr:
  dmi.sys.vendor: Hewlett-Packard

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