Public bug reported:

Writes on XFS mount fail due to `BUG: unable to handle kernel paging
request at ffffc9001aecb2c` (logged in `dmesg`).

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-34-generic 4.4.0-34.53
ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
Uname: Linux 4.4.0-34-generic x86_64
NonfreeKernelModules: openafs
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
 BEN.        PID ZUGR.  BEFEHL
 /dev/snd/controlC0:  richter   11235 F.... pulseaudio
CurrentDesktop: Unity
Date: Wed Aug 10 18:25:47 2016
HibernationDevice: RESUME=UUID=1bb0bb3e-8148-4957-9673-9701bd571c0a
InstallationDate: Installed on 2015-12-12 (242 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: LENOVO 20221
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-34-generic 
root=UUID=791b47e7-915d-4d5a-bce0-d7e9b660a2ab ro 
rootflags=subvol=ubuntu-main-root
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-34-generic N/A
 linux-backports-modules-4.4.0-34-generic  N/A
 linux-firmware                            1.157.2
SourcePackage: linux
UpgradeStatus: Upgraded to xenial on 2016-03-14 (149 days ago)
dmi.bios.date: 07/12/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: 71CN51WW(V1.21)
dmi.board.asset.tag: No Asset Tag
dmi.board.name: INVALID
dmi.board.vendor: LENOVO
dmi.board.version: 31900003WIN8 STD MLT
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo IdeaPad Z500 Touch
dmi.modalias: 
dmi:bvnLENOVO:bvr71CN51WW(V1.21):bd07/12/2013:svnLENOVO:pn20221:pvrLenovoIdeaPadZ500Touch:rvnLENOVO:rnINVALID:rvr31900003WIN8STDMLT:cvnLENOVO:ct10:cvrLenovoIdeaPadZ500Touch:
dmi.product.name: 20221
dmi.product.version: Lenovo IdeaPad Z500 Touch
dmi.sys.vendor: LENOVO

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug xenial

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https://bugs.launchpad.net/bugs/1611845

Title:
  BUG: unable to handle kernel paging request at ffffc9001aecb2c

Status in linux package in Ubuntu:
  New

Bug description:
  Writes on XFS mount fail due to `BUG: unable to handle kernel paging
  request at ffffc9001aecb2c` (logged in `dmesg`).

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-34-generic 4.4.0-34.53
  ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
  Uname: Linux 4.4.0-34-generic x86_64
  NonfreeKernelModules: openafs
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  AudioDevicesInUse:
   BEN.        PID ZUGR.  BEFEHL
   /dev/snd/controlC0:  richter   11235 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed Aug 10 18:25:47 2016
  HibernationDevice: RESUME=UUID=1bb0bb3e-8148-4957-9673-9701bd571c0a
  InstallationDate: Installed on 2015-12-12 (242 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  MachineType: LENOVO 20221
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-34-generic 
root=UUID=791b47e7-915d-4d5a-bce0-d7e9b660a2ab ro 
rootflags=subvol=ubuntu-main-root
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-34-generic N/A
   linux-backports-modules-4.4.0-34-generic  N/A
   linux-firmware                            1.157.2
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-03-14 (149 days ago)
  dmi.bios.date: 07/12/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 71CN51WW(V1.21)
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: INVALID
  dmi.board.vendor: LENOVO
  dmi.board.version: 31900003WIN8 STD MLT
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo IdeaPad Z500 Touch
  dmi.modalias: 
dmi:bvnLENOVO:bvr71CN51WW(V1.21):bd07/12/2013:svnLENOVO:pn20221:pvrLenovoIdeaPadZ500Touch:rvnLENOVO:rnINVALID:rvr31900003WIN8STDMLT:cvnLENOVO:ct10:cvrLenovoIdeaPadZ500Touch:
  dmi.product.name: 20221
  dmi.product.version: Lenovo IdeaPad Z500 Touch
  dmi.sys.vendor: LENOVO

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