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[Stuart Bishop <1502555@xxxxxxxxxxxxxxxxxx>]

No further failures after destroying a misbehaving btrfs subvolume.

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https://bugs.launchpad.net/bugs/1502555

Title:
  BUG: unable to handle kernel NULL pointer dereference at
  0000000000000334

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Machine hung completely. This issue picked up by apport after power
  cycling.

  Updating to BIOS version F.26 causes issue as noted in:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1434136

  ProblemType: KernelOops
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-12-generic 4.2.0-12.14
  ProcVersionSignature: Ubuntu 4.2.0-12.14-generic 4.2.1
  Uname: Linux 4.2.0-12-generic x86_64
  NonfreeKernelModules: wl
  Annotation: Your system might become unstable now and might need to be restarted.
  ApportVersion: 2.19-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  stub       4672 F.... pulseaudio
   /dev/snd/controlC0:  stub       4672 F.... pulseaudio
  Date: Sun Oct  4 15:47:49 2015
  DuplicateSignature: BUG: unable to handle kernel NULL pointer dereference at location RIP: 0010:location  location btrfs_sync_file+0xaa/0x340 [btrfs]
  Failure: oops
  HibernationDevice: RESUME=UUID=85d38fc2-ada5-4f5e-83ec-ca176c194dab
  InstallationDate: Installed on 2015-03-13 (204 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 004: ID 0a5c:216c Broadcom Corp. BCM43142A0 Bluetooth Device
   Bus 001 Device 003: ID 064e:c33c Suyin Corp.
   Bus 001 Device 002: ID 1bcf:0005 Sunplus Innovation Technology Inc. Optical Mouse
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Hewlett-Packard HP Pavilion 13 Notebook PC
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-12-generic.efi.signed root=/dev/mapper/ubuntu--vg-root 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
  Title: BUG: unable to handle kernel NULL pointer dereference at 0000000000000334
  UpgradeStatus: Upgraded to wily on 2015-09-29 (5 days ago)
  dmi.bios.date: 11/28/2014
  dmi.bios.vendor: Insyde
  dmi.bios.version: F.24
  dmi.board.asset.tag: Type2 - Board Asset Tag
  dmi.board.name: 2340
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 07.09
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnInsyde:bvrF.24:bd11/28/2014:svnHewlett-Packard:pnHPPavilion13NotebookPC:pvr097D120000005F00000400080:rvnHewlett-Packard:rn2340:rvr07.09:cvnHewlett-Packard:ct10:cvrChassisVersion:
  dmi.product.name: HP Pavilion 13 Notebook PC
  dmi.product.version: 097D120000005F00000400080
  dmi.sys.vendor: Hewlett-Packard

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