kernel-packages team mailing list archive

[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

I'd like to perform a bisect to figure out what commit caused this
regression. We need to identify the earliest kernel where the issue
started happening as well as the latest kernel that did not have this
issue.

Can you test the following kernels and report back? We are looking for
the first kernel version that exhibits this bug:

v3.8 final: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.8-raring
v3.9 final: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9-saucy
v3.10 final: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.10-saucy
v3.11-rc1: http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11-rc1-saucy/

You don't have to test every kernel, just up until the kernel that first
has this bug.

Thanks in advance!

** Tags added: performing-bisect

** Changed in: linux (Ubuntu)
   Importance: Medium => High

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https://bugs.launchpad.net/bugs/1247906

Title:
  Repeatable oops qxl_enc_commit

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  I've got an Ubuntu Trusty guest running under a Fedora 20-pre-beta,
  the guest oops reliably.

  To repeat:
      Setup KVM with the guest configured with QXL graphics, 
      Install openssh-server in the guest

     Boot it and then send a ctrl-alt-f1
     Problem 1 : Corrupt graphics instead of console

     Now ssh into the guest
     Send a ctrl-alt-f2
     Problem 2 : dmesg on the guest to see backtrace.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.12.0-1-generic 3.12.0-1.3
  ProcVersionSignature: Ubuntu 3.12.0-1.3-generic 3.12.0-rc7
  Uname: Linux 3.12.0-1-generic x86_64
  ApportVersion: 2.12.6-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  Date: Mon Nov  4 17:08:38 2013
  HibernationDevice: RESUME=UUID=0190ef1f-ced8-4fbc-9fc3-bd9f73c329db
  InstallationDate: Installed on 2013-10-20 (14 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Beta amd64 (20131012)
  IwConfig:
   eth0      no wireless extensions.
   
   lo        no wireless extensions.
  Lsusb:
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  MachineType: Bochs Bochs
  MarkForUpload: True
  ProcFB: 0 qxldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.12.0-1-generic root=UUID=3072ba2d-eda3-4789-9a31-38240b2aae52 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:
   linux-restricted-modules-3.12.0-1-generic N/A
   linux-backports-modules-3.12.0-1-generic  N/A
   linux-firmware                            1.117
  RfKill:
   
  SourcePackage: linux
  UpgradeStatus: Upgraded to trusty on 2013-11-02 (2 days ago)
  dmi.bios.date: 01/01/2011
  dmi.bios.vendor: Bochs
  dmi.bios.version: Bochs
  dmi.chassis.type: 1
  dmi.chassis.vendor: Bochs
  dmi.modalias: dmi:bvnBochs:bvrBochs:bd01/01/2011:svnBochs:pnBochs:pvr:cvnBochs:ct1:cvr:
  dmi.product.name: Bochs
  dmi.sys.vendor: Bochs

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