kernel-packages team mailing list archive

[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

I don't see the attached patch in Linus' tree as of yet.  Do you plan on
submitting the patch for inclusion in the mainline tree?  If so, it
would be best to also cc stable, so it lands in all of the stable trees,
including upstream 3.13, which Trusty is based on.

** Changed in: linux (Ubuntu)
       Status: Confirmed => Triaged

** Tags added: kernel-da-key

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https://bugs.launchpad.net/bugs/1316689

Title:
  Radeon VDPAU clients crash at vlVdpDecoderCreate with 1080p videos

Status in The Linux Kernel:
  Fix Released
Status in “linux” package in Ubuntu:
  Triaged

Bug description:
  I've enabled VDPAU support in flash player, and testing it with normal
  youtube videos (up to 720p) gives good results.

  However, once I switch to 1080p quality, the flash player crashes, and
  this happens at the mesa vdpau driver level because a Bus Error
  triggered by mesa since the CPU can't access properly to gpu VRAM.

  The same happens loading a 1080p video using VLC or MPlayer (see vlc
  backtrace http://paste.ubuntu.com/7405255/).

  Here's the problem as explained by Christian König:
  > It's not the VDPAU driver that's failing here, it's the kernel.
  > 
  > When the kernel can't place a buffer into visible VRAM the buffer
  > should be moved into GART instead for CPU access. But instead we
  > just return a SIGBUS to the application effectively crashing it.

  I'm attaching the patch that fixes this problem, provided by Christian
  and tested successfully on ubuntu Trusty kernel.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-24-generic 3.13.0-24.47
  ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  marco      2988 F.... pulseaudio
   /dev/snd/pcmC1D3p:   marco      2988 F...m pulseaudio
   /dev/snd/controlC0:  marco      2988 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Tue May  6 18:27:23 2014
  HibernationDevice: RESUME=UUID=534ddf57-b0f4-4367-ae56-d2878b2f614f
  InstallationDate: Installed on 2010-07-10 (1396 days ago)
  InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
  MachineType: Acer Aspire 4820TG
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=4811a166-63ca-4702-8e63-0c357cc2e2f7 ro quiet splash radeon.audio=1 radeon.dpm=1 crashkernel=384M-2G:64M,2G-:128M crashkernel=384M-2G:64M,2G-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-24-generic N/A
   linux-backports-modules-3.13.0-24-generic  N/A
   linux-firmware                             1.127
  SourcePackage: linux
  UpgradeStatus: Upgraded to trusty on 2012-10-10 (573 days ago)
  dmi.bios.date: 03/16/2011
  dmi.bios.vendor: INSYDE
  dmi.bios.version: V1.25
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: JM41_CP
  dmi.board.vendor: Acer
  dmi.board.version: Base Board Version
  dmi.chassis.type: 10
  dmi.chassis.vendor: Chassis Manufacturer
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnINSYDE:bvrV1.25:bd03/16/2011:svnAcer:pnAspire4820TG:pvrV1.25:rvnAcer:rnJM41_CP:rvrBaseBoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:
  dmi.product.name: Aspire 4820TG
  dmi.product.version: V1.25
  dmi.sys.vendor: Acer

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