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[Bug 1306804] Re: BUG: unable to handle kernel NULL pointer dereference at 0000000000000050

 

Alastair,

thankyou for testing. Can you please install and test
  http://people.canonical.com/~jj/linux-image-3.13.0-24-generic_3.13.0-24.46+lp1306804v2_amd64.deb
  http://people.canonical.com/~jj/linux-image-extra-3.13.0-24-generic_3.13.0-24.46+lp1306804v2_amd64.deb

If this one oops can you please attach the dmesg log. This kernel
contains extra debug output that will trigger if there is an oops.

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https://bugs.launchpad.net/bugs/1306804

Title:
  BUG: unable to handle kernel NULL pointer dereference at
  0000000000000050

Status in “linux” package in Ubuntu:
  Confirmed
Status in “linux” source package in Trusty:
  Confirmed

Bug description:
  Happens most logins. "A system problem has been detected" message box
  appears immediately on log in to gnome shell. Currently running 3.10,
  but it's been happening since at least 3.8.

  ProblemType: KernelOops
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-23-generic 3.13.0-23.45
  ProcVersionSignature: Ubuntu 3.13.0-23.45-generic 3.13.8
  Uname: Linux 3.13.0-23-generic x86_64
  NonfreeKernelModules: fglrx
  Annotation: Your system might become unstable now and might need to be restarted.
  ApportVersion: 2.14.1-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  alastair   2777 F.... pulseaudio
   /dev/snd/controlC0:  alastair   2777 F.... pulseaudio
   /dev/snd/seq:        timidity   1648 F.... timidity
  Date: Fri Apr 11 21:28:50 2014
  DuplicateSignature: BUG: unable to handle kernel NULL pointer dereference at location RIP: 0010:location  location apparmor_inode_getattr+0xf/0x50
  Failure: oops
  HibernationDevice: RESUME=UUID=77f13ddf-9be1-422a-a595-144a3de9e919
  InstallationDate: Installed on 2012-04-30 (711 days ago)
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  MachineType: Advent Centurion CPQ9104
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-23-generic root=UUID=fb1dc97f-95a7-4354-82e8-65a25dcc4474 ro quiet splash vt.handoff=7
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions: kerneloops-daemon 0.12+git20090217-3ubuntu8
  SourcePackage: linux
  StagingDrivers: zram
  Title: BUG: unable to handle kernel NULL pointer dereference at 0000000000000050
  UpgradeStatus: Upgraded to trusty on 2014-04-09 (2 days ago)
  dmi.bios.date: 09/25/2009
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 080014
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: A7VMX-K
  dmi.board.vendor: FOXCONN
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080014:bd09/25/2009:svnAdvent:pnCenturionCPQ9104:pvrToBeFilledByO.E.M.:rvnFOXCONN:rnA7VMX-K:rvr1.0:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: Centurion CPQ9104
  dmi.product.version: To Be Filled By O.E.M.
  dmi.sys.vendor: Advent

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