[Bug 388357] Re: [i965] GPU hang on i965 under karmic: INFO: task events/1:10 blocked for more than 120 seconds

[Matt Zimmerman]

seb128 mentioned that he sees similar dmesg output for bug bug 383822,
so they may be related.

** Summary changed:

- [i965] GPU hang on i965 under karmic
+ [i965] GPU hang on i965 under karmic: INFO: task events/1:10 blocked for more than 120 seconds

** Description changed:

  Binary package hint: xserver-xorg-video-intel
  
  I had finished watching a video in totem, and had been writing email
  using mutt and vim in a terminal for some time, when the screen stopped
  updating.  My music was still playing, though; everything seemed to be
  running except for the X server (symptoms similar to bug 359392).
  
  I was able to ssh in from another system and collect intel_gpu_dump
  output, which i will attach.
  
  /proc/interrupts showed no change in the number of interrupts for i915.
  
  The kernel logged a page allocation failure while intel_gpu_dump was
  running(!), which will be shown in the attached dmesg.
+ 
+ I've seen it happen twice now (in the span of 2 hours), and both times,
+ dmesg shows:
+ 
+ [ 6000.528124] INFO: task events/1:10 blocked for more than 120 seconds.
+ [ 6000.528133] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+ [ 6000.528140] events/1      D 0000000100151496     0    10      2
+ [ 6000.528152]  ffff8800bded1db0 0000000000000046 ffff8800bded1d30 0000000000013000
+ [ 6000.528163]  ffff8800bdec83a8 0000000000013000 0000000000013000 0000000000013000
+ [ 6000.528173]  0000000000013000 0000000000013000 ffff8800bdec83a8 0000000000013000
+ [ 6000.528183] Call Trace:
+ [ 6000.528203]  [<ffffffff806d9467>] __mutex_lock_slowpath+0xd7/0x160
+ [ 6000.528216]  [<ffffffff802436b1>] ? finish_task_switch+0x51/0x110
+ [ 6000.528225]  [<ffffffff806d9186>] mutex_lock+0x26/0x50
+ [ 6000.528260]  [<ffffffffa0251ec8>] i915_gem_retire_work_handler+0x38/0x90 [i915]
+ [ 6000.528283]  [<ffffffffa0251e90>] ? i915_gem_retire_work_handler+0x0/0x90 [i915]
+ [ 6000.528292]  [<ffffffff802643d5>] run_workqueue+0x95/0x170
+ [ 6000.528300]  [<ffffffff80264554>] worker_thread+0xa4/0x120
+ [ 6000.528310]  [<ffffffff80268e90>] ? autoremove_wake_function+0x0/0x40
+ [ 6000.528318]  [<ffffffff802644b0>] ? worker_thread+0x0/0x120
+ [ 6000.528327]  [<ffffffff80268a35>] kthread+0x55/0xa0
+ [ 6000.528335]  [<ffffffff802130ca>] child_rip+0xa/0x20
+ [ 6000.528344]  [<ffffffff802689e0>] ? kthread+0x0/0xa0
+ [ 6000.528351]  [<ffffffff802130c0>] ? child_rip+0x0/0x20
+ 
  
  ProblemType: Bug
  Architecture: amd64
  Date: Wed Jun 17 10:20:15 2009
  DistroRelease: Ubuntu 9.10
  MachineType: LENOVO 6465CTO
  Package: xserver-xorg-video-intel 2:2.7.99.1+git20090602.ec2fde7c-0ubuntu2
  ProcCmdLine: root=UUID=305dde78-d20a-4248-aaf4-09447b7c5791 ro quiet splash
  ProcEnviron:
   LC_COLLATE=C
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/zsh
  ProcVersionSignature: Ubuntu 2.6.30-9.10-generic
  RelatedPackageVersions:
   xserver-xorg 1:7.4~5ubuntu21
   libgl1-mesa-glx 7.4.1-1ubuntu2
   libdrm2 2.4.11-0ubuntu1
   xserver-xorg-video-intel 2:2.7.99.1+git20090602.ec2fde7c-0ubuntu2
   xserver-xorg-video-ati 1:6.12.2-2ubuntu1
  SourcePackage: xserver-xorg-video-intel
  Uname: Linux 2.6.30-9-generic x86_64
  dmi.bios.date: 01/21/2008
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 7LETB0WW (2.10 )
  dmi.board.name: 6465CTO
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr7LETB0WW(2.10):bd01/21/2008:svnLENOVO:pn6465CTO:pvrThinkPadT61:rvnLENOVO:rn6465CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 6465CTO
  dmi.product.version: ThinkPad T61
  dmi.sys.vendor: LENOVO
  fglrx: Not loaded
  system:
   distro:             Ubuntu
   architecture:       x86_64kernel:             2.6.30-9-generic

-- 
[i965] GPU hang on i965 under karmic: INFO: task events/1:10 blocked for more than 120 seconds
https://bugs.launchpad.net/bugs/388357
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