Comment 2 for bug 666218

Oops:

Oct 25 11:59:48 lure kernel: [ 5210.738375] CPU 1
Oct 25 11:59:48 lure kernel: [ 5210.738379] Modules linked in: autofs4 rfcomm sco bnep l2cap vboxnetadp vboxnetflt vboxdrv parport_pc ppdev snd_hda_codec_conexant arc4 thinkpad_acpi snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi iwlagn snd_seq_midi_event snd_seq iwlcore mac80211 snd_timer snd_seq_device btusb tpm_tis led_class bluetooth nvram tpm tpm_bios cfg80211 snd psmouse soundcore serio_raw snd_page_alloc lp parport sha256_generic cryptd aes_x86_64 aes_generic dm_crypt i915 drm_kms_helper drm ahci e1000e i2c_algo_bit libahci intel_agp video output
Oct 25 11:59:48 lure kernel: [ 5210.738477]
Oct 25 11:59:48 lure kernel: [ 5210.738485] Pid: 1346, comm: Xorg Not tainted 2.6.35-22-generic #35-Ubuntu 74705HG/74705HG
Oct 25 11:59:48 lure kernel: [ 5210.738492] RIP: 0010:[<ffffffffa00cbe51>] [<ffffffffa00cbe51>] i915_gem_object_unpin+0xc1/0xd0 [i915]
Oct 25 11:59:48 lure kernel: [ 5210.738527] RSP: 0018:ffff880118fc7c48 EFLAGS: 00010286
Oct 25 11:59:48 lure kernel: [ 5210.738533] RAX: 00000000fffffffc RBX: 000000000000006f RCX: ffff8801319b4000
Oct 25 11:59:48 lure kernel: [ 5210.738540] RDX: 00000000005b04ff RSI: 0000000000030000 RDI: ffff8800af364e00
Oct 25 11:59:48 lure kernel: [ 5210.738546] RBP: ffff880118fc7c48 R08: ffff88013648c000 R09: ffff880118fc7de8
Oct 25 11:59:48 lure kernel: [ 5210.738552] R10: 000000000000006f R11: ffff88013648c118 R12: 000000000000005d
Oct 25 11:59:48 lure kernel: [ 5210.738558] R13: ffff8801315e72e8 R14: ffff8801315e7000 R15: 0000000000000000
Oct 25 11:59:48 lure kernel: [ 5210.738566] FS: 00007f8f14dcf840(0000) GS:ffff880001e80000(0000) knlGS:0000000000000000
Oct 25 11:59:48 lure kernel: [ 5210.738573] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Oct 25 11:59:48 lure kernel: [ 5210.738579] CR2: 00000000046d8788 CR3: 000000011d11c000 CR4: 00000000000026e0
Oct 25 11:59:48 lure kernel: [ 5210.738585] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Oct 25 11:59:48 lure kernel: [ 5210.738592] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Oct 25 11:59:48 lure kernel: [ 5210.738599] Process Xorg (pid: 1346, threadinfo ffff880118fc6000, task ffff880133ad96e0)
Oct 25 11:59:48 lure kernel: [ 5210.738608] ffff880118fc7d28 ffffffffa00d3061 ffff880118fc7c78 ffffffff8112b9d2
Oct 25 11:59:48 lure kernel: [ 5210.738617] <0> 0000000000000001 ffff880062586180 ffff880118fc7cd8 0000000000000004
Oct 25 11:59:48 lure kernel: [ 5210.738628] <0> 0000000000000001 000000000000006f ffff8801319b4020 ffff88013648c028
Oct 25 11:59:48 lure kernel: [ 5210.738669] [<ffffffffa00d3061>] i915_gem_do_execbuffer+0x841/0xe30 [i915]
Oct 25 11:59:48 lure kernel: [ 5210.738683] [<ffffffff8112b9d2>] ? map_vm_area+0x32/0x50
Oct 25 11:59:48 lure kernel: [ 5210.738710] [<ffffffffa00d3aa8>] i915_gem_execbuffer2+0xc8/0x210 [i915]
Oct 25 11:59:48 lure kernel: [ 5210.738738] [<ffffffffa0072433>] drm_ioctl+0x463/0x520 [drm]
Oct 25 11:59:48 lure kernel: [ 5210.738765] [<ffffffffa00d39e0>] ? i915_gem_execbuffer2+0x0/0x210 [i915]
Oct 25 11:59:48 lure kernel: [ 5210.738778] [<ffffffff81036dd9>] ? default_spin_lock_flags+0x9/0x10
Oct 25 11:59:48 lure kernel: [ 5210.738788] [<ffffffff815891ff>] ? _raw_spin_lock_irqsave+0x2f/0x40
Oct 25 11:59:48 lure kernel: [ 5210.738798] [<ffffffff81082b4b>] ? __remove_hrtimer+0x3b/0xb0
Oct 25 11:59:48 lure kernel: [ 5210.738806] [<ffffffff810831a1>] ? lock_hrtimer_base+0x31/0x60
Oct 25 11:59:48 lure kernel: [ 5210.738817] [<ffffffff8116295d>] vfs_ioctl+0x3d/0xd0
Oct 25 11:59:48 lure kernel: [ 5210.738825] [<ffffffff81163231>] do_vfs_ioctl+0x81/0x340
Oct 25 11:59:48 lure kernel: [ 5210.738836] [<ffffffff81065a44>] ? sys_setitimer+0x64/0xe0
Oct 25 11:59:48 lure kernel: [ 5210.738844] [<ffffffff81163571>] sys_ioctl+0x81/0xa0
Oct 25 11:59:48 lure kernel: [ 5210.738855] [<ffffffff8100a0f2>] system_call_fastpath+0x16/0x1b
Oct 25 11:59:48 lure kernel: [ 5210.738972] RSP <ffff880118fc7c48>
Oct 25 11:59:48 lure kernel: [ 5210.738986] ---[ end trace 83a7126def72a85f ]---