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[bugbot <562868@xxxxxxxxxxxxxxxxxx>]

** Description changed:

  Binary package hint: xorg
  
  HW: ThinkPad X200s with Intel 4500MHD
  SW: Kubuntu Lucid up-to-date
  
  I have just booted freshly my system, connected two external monitor
  (dual config) and during the restore of my last session (staring Kontact
  and Chromium), the system just hung. I could not move mouse, disk
  activity stopped and I could not switch VT. Therefore only hard power-
  off helped.
  
  Apr 14 10:16:41 lure kernel: [  199.768434] Modules linked in: rfcomm ppdev sco bridge stp bnep l2cap vboxdrv sha256_generic cryptd aes_x86_64 aes_generic dm_crypt snd_hda_codec_conexant snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm arc4 thinkpad_acpi snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device iwlagn iwlcore snd mac80211 btusb bluetooth led_class nvram psmouse soundcore serio_raw snd_page_alloc cfg80211 lp parport fbcon tileblit font bitblit softcursor vga16fb vgastate i915 drm_kms_helper drm e1000e intel_agp ahci i2c_algo_bit video output
  Apr 14 10:16:41 lure kernel: [  199.768546] Pid: 1160, comm: Xorg Not tainted 2.6.32-20-generic #30-Ubuntu 74705HG
  Apr 14 10:16:41 lure kernel: [  199.768552] RIP: 0010:[<ffffffff81134a63>]  [<ffffffff81134a63>] kfree+0x133/0x140
  Apr 14 10:16:41 lure kernel: [  199.768571] RSP: 0018:ffff88011fe9bca8  EFLAGS: 00010246
  Apr 14 10:16:41 lure kernel: [  199.768576] RAX: 0100000000100068 RBX: ffffffffa00c5403 RCX: 0000000000000000
  Apr 14 10:16:41 lure kernel: [  199.768582] RDX: 0000000000520068 RSI: ffffea00023e02d8 RDI: ffff8800a400d300
  Apr 14 10:16:41 lure kernel: [  199.768588] RBP: ffff88011fe9bcc8 R08: 0000000000000000 R09: 0000000000000000
  Apr 14 10:16:41 lure kernel: [  199.768594] R10: ffff88011fe9bdd8 R11: 0000000000000000 R12: ffff8800a400d300
  Apr 14 10:16:41 lure kernel: [  199.768600] R13: ffff8800b791f600 R14: ffff880122b1dcf8 R15: 0000000000000ac2
  Apr 14 10:16:41 lure kernel: [  199.768607] FS:  00007f6384dc9700(0000) GS:ffff880028280000(0000) knlGS:0000000000000000
  Apr 14 10:16:41 lure kernel: [  199.768614] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
  Apr 14 10:16:41 lure kernel: [  199.768619] CR2: 00007fc52804a000 CR3: 0000000136db7000 CR4: 00000000000006e0
  Apr 14 10:16:41 lure kernel: [  199.768625] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  Apr 14 10:16:41 lure kernel: [  199.768632] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
  Apr 14 10:16:41 lure kernel: [  199.768638] Process Xorg (pid: 1160, threadinfo ffff88011fe9a000, task ffff8801346bc4d0)
  Apr 14 10:16:41 lure kernel: [  199.768647]  ffff8800b791f480 ffff8800b791f480 ffff8800b791f600 ffff8800b791f600
  Apr 14 10:16:41 lure kernel: [  199.768656] <0> ffff88011fe9bcf8 ffffffffa00c5403 ffff880133c99800 ffff8800b791f480
  Apr 14 10:16:41 lure kernel: [  199.768666] <0> ffff880133c99820 ffff880122b1dcf8 ffff88011fe9bd18 ffffffffa006a620
  Apr 14 10:16:41 lure kernel: [  199.768709]  [<ffffffffa00c5403>] i915_gem_free_object+0xe3/0x130 [i915]
  Apr 14 10:16:41 lure kernel: [  199.768738]  [<ffffffffa006a620>] drm_gem_object_free+0x30/0x60 [drm]
  Apr 14 10:16:41 lure kernel: [  199.768761]  [<ffffffffa006a5f0>] ? drm_gem_object_free+0x0/0x60 [drm]
  Apr 14 10:16:41 lure kernel: [  199.768773]  [<ffffffff812b4567>] kref_put+0x37/0x70
  Apr 14 10:16:41 lure kernel: [  199.768795]  [<ffffffffa006a79a>] drm_gem_close_ioctl+0xba/0xf0 [drm]
  Apr 14 10:16:41 lure kernel: [  199.768817]  [<ffffffffa0068e2a>] drm_ioctl+0x27a/0x480 [drm]
  Apr 14 10:16:41 lure kernel: [  199.768840]  [<ffffffffa006a6e0>] ? drm_gem_close_ioctl+0x0/0xf0 [drm]
  Apr 14 10:16:41 lure kernel: [  199.768851]  [<ffffffff81117881>] ? __remove_shared_vm_struct+0x41/0x60
  Apr 14 10:16:41 lure kernel: [  199.768861]  [<ffffffff81122451>] ? free_pages_and_swap_cache+0x21/0xe0
  Apr 14 10:16:41 lure kernel: [  199.768870]  [<ffffffff812b16cb>] ? cpumask_any_but+0x2b/0x40
  Apr 14 10:16:41 lure kernel: [  199.768881]  [<ffffffff81152ad2>] vfs_ioctl+0x22/0xa0
  Apr 14 10:16:41 lure kernel: [  199.768892]  [<ffffffff810397a9>] ? default_spin_lock_flags+0x9/0x10
  Apr 14 10:16:41 lure kernel: [  199.768901]  [<ffffffff81152d81>] do_vfs_ioctl+0x81/0x380
  Apr 14 10:16:41 lure kernel: [  199.768910]  [<ffffffff812b729d>] ? __up_write+0xdd/0x150
  Apr 14 10:16:41 lure kernel: [  199.768918]  [<ffffffff81153101>] sys_ioctl+0x81/0xa0
  Apr 14 10:16:41 lure kernel: [  199.768928]  [<ffffffff8108998e>] ? up_write+0xe/0x10
  Apr 14 10:16:41 lure kernel: [  199.768939]  [<ffffffff810131b2>] system_call_fastpath+0x16/0x1b
  Apr 14 10:16:41 lure kernel: [  199.769037]  RSP <ffff88011fe9bca8>
  Apr 14 10:16:41 lure kernel: [  199.769044] ---[ end trace 9b80a1a1fa25b39f ]---
  
  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: xorg 1:7.5+5ubuntu1
  ProcVersionSignature: Ubuntu 2.6.32-20.30-generic 2.6.32.11+drm33.2
  Uname: Linux 2.6.32-20-generic x86_64
  Architecture: amd64
  Date: Wed Apr 14 10:25:05 2010
  MachineType: LENOVO 74705HG
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-20-generic root=/dev/mapper/plain-root ro quiet splash
  ProcEnviron:
   LANGUAGE=
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: xorg
  dmi.bios.date: 01/12/2010
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 6DET62WW (3.12 )
  dmi.board.name: 74705HG
  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:bvr6DET62WW(3.12):bd01/12/2010:svnLENOVO:pn74705HG:pvrThinkPadX200s:rvnLENOVO:rn74705HG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 74705HG
  dmi.product.version: ThinkPad X200s
  dmi.sys.vendor: LENOVO
  glxinfo: Error: [Errno 2] No such file or directory
  system:
   distro:             Ubuntu
   codename:           lucid
   architecture:       x86_64
   kernel:             2.6.32-20-generic
+ 
+ [lspci]
+ 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07)
+     	Subsystem: Lenovo Device [17aa:20e4]

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https://bugs.launchpad.net/bugs/562868

Title:
  [gm45] X hang with kernel oops in i915_gem_free_object+0xe3/0x130
  [i915]