Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: xserver-xorg-video-intel (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1091996

Title:
  Xorg crashed with intel_dri backtrace

Status in “xserver-xorg-video-intel” package in Ubuntu:
  Confirmed

Bug description:
  I was running a git gc command, when suddenly Xorg crashed

  The trace smells like a memory allocation problem.

  [  2231.463] (EE) intel(0): Failed to submit batch buffer, expect rendering 
corruption or even a frozen display: No space left on device.
  [  2231.467] (EE) 
  [  2231.467] (EE) Backtrace:
  [  2231.472] (EE) 0: /usr/bin/X (xorg_backtrace+0x49) [0xb76a2089]
  [  2231.472] (EE) 1: /usr/bin/X (0xb74fa000+0x1abf76) [0xb76a5f76]
  [  2231.472] (EE) 2: (vdso) (__kernel_rt_sigreturn+0x0) [0xb74d740c]
  [  2231.472] (EE) 3: /lib/i386-linux-gnu/libc.so.6 (0xb7115000+0x13a0d0) 
[0xb724f0d0]
  [  2231.472] (EE) 4: /usr/lib/xorg/modules/drivers/intel_drv.so 
(0xb6e49000+0x124ac) [0xb6e5b4ac]
  [  2231.472] (EE) 5: /usr/lib/xorg/modules/drivers/intel_drv.so 
(0xb6e49000+0x144ac) [0xb6e5d4ac]
  [  2231.472] (EE) 6: /usr/lib/xorg/modules/drivers/intel_drv.so 
(0xb6e49000+0xf5e35) [0xb6f3ee35]
  [  2231.472] (EE) 7: /usr/bin/X (0xb74fa000+0x12b7c4) [0xb76257c4]
  [  2231.472] (EE) 8: /usr/bin/X (0xb74fa000+0x392cf) [0xb75332cf]
  [  2231.472] (EE) 9: /usr/bin/X (0xb74fa000+0x3cbf5) [0xb7536bf5]
  [  2231.472] (EE) 10: /usr/bin/X (0xb74fa000+0x2a14a) [0xb752414a]
  [  2231.472] (EE) 11: /lib/i386-linux-gnu/libc.so.6 (__libc_start_main+0xf5) 
[0xb712e715]
  [  2231.473] (EE) 12: /usr/bin/X (0xb74fa000+0x2a529) [0xb7524529]
  [  2231.473] (EE) 
  [  2231.473] (EE) Bus error at address 0xb59e5000
  [  2231.473] 
  Fatal server error:
  [  2231.473] Caught signal 7 (Bus error). Server aborting
  [  2231.473] 
  [  2231.473] (EE) 
  Please consult the The X.Org Foundation support 
           at http://wiki.x.org
   for help. 
  [  2231.473] (EE) Please also check the log file at "/var/log/Xorg.0.log" for 
additional information.
  [  2231.473] (EE) 
  [  2231.596] (II) evdev: Power Button: Close
  [  2231.596] (II) UnloadModule: "evdev"
  [  2231.704] (II) evdev: Video Bus: Close
  [  2231.704] (II) UnloadModule: "evdev"
  [  2231.780] (II) evdev: Sleep Button: Close
  [  2231.780] (II) UnloadModule: "evdev"
  [  2231.864] (II) evdev: Logitech USB-PS/2 Optical Mouse: Close
  [  2231.864] (II) UnloadModule: "evdev"
  [  2231.952] (II) evdev: CHICONY HP Basic USB Keyboard: Close
  [  2231.952] (II) UnloadModule: "evdev"
  [  2232.036] (II) evdev: Integrated Camera: Close
  [  2232.036] (II) UnloadModule: "evdev"
  [  2232.128] (II) evdev: AT Translated Set 2 keyboard: Close
  [  2232.128] (II) UnloadModule: "evdev"
  [  2232.216] (II) evdev: ThinkPad Extra Buttons: Close
  [  2232.216] (II) UnloadModule: "evdev"
  [  2232.316] (II) evdev: UVC Camera (046d:0809): Close
  [  2232.316] (II) UnloadModule: "evdev"
  [  2232.553] (II) UnloadModule: "synaptics"
  [  2232.554] (II) AIGLX: Suspending AIGLX clients for VT switch
  [  2232.877] Server terminated with error (1). Closing log file.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: xserver-xorg-video-intel 2:2.20.16-0ubuntu1
  ProcVersionSignature: Ubuntu 3.7.0-7.15-generic 3.7.0
  Uname: Linux 3.7.0-7-generic i686
  ApportVersion: 2.7-0ubuntu2
  Architecture: i386
  Date: Wed Dec 19 09:26:01 2012
  InstallationDate: Installed on 2012-11-28 (20 days ago)
  InstallationMedia: Kubuntu 13.04 "Raring Ringtail" - Alpha i386 (20121128)
  MarkForUpload: True
  SourcePackage: xserver-xorg-video-intel
  UpgradeStatus: No upgrade log present (probably fresh install)

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