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kernel BUG at /build/buildd/linux-2.6.35/drivers/gpu/drm/i915/i915_gem.c:4197!
invalid opcode: 0000 [#1] SMP 
last sysfs file: /sys/devices/virtual/backlight/acpi_video0/actual_brightness
Modules linked in: binfmt_misc vboxnetadp vboxnetflt vboxdrv parport_pc ppdev snd_hda_codec_realtek joydev arc4 ipt_REJECT ipt_LOG xt_multiport xt_limit xt_tcpudp ipt_addrtype xt_state snd_hda_intel snd_hda_codec snd_hwdep ip6table_filter ip6_tables i915 snd_pcm nf_nat_irc drm_kms_helper nf_conntrack_irc nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 drm snd_seq_midi nf_conntrack_ftp snd_rawmidi nf_conntrack iptable_filter snd_seq_midi_event rtl8187 ip_tables snd_seq x_tables snd_timer mac80211 snd_seq_device led_class cfg80211 uvcvideo snd videodev v4l1_compat eeprom_93cx6 psmouse i2c_algo_bit serio_raw soundcore intel_agp video snd_page_alloc output agpgart lp parport usbhid hid ahci libahci r8169 mii

Pid: 5198, comm: Xorg Not tainted 2.6.35-22-generic #33-Ubuntu Portable PC/Satellite L505
EIP: 0060:[<f886cebb>] EFLAGS: 00013286 CPU: 0
EIP is at i915_gem_object_unpin+0xbb/0xd0 [i915]
EAX: f202f240 EBX: f692bc00 ECX: 000244ff EDX: fffffff9
ESI: 00024000 EDI: f7294000 EBP: f0b29dc8 ESP: f0b29dbc
 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process Xorg (pid: 5198, ti=f0b28000 task=f4b2e580 task.ti=f0b28000)
Stack:
 00000002 00000003 f423ed80 f0b29e4c f8872ec3 f7294014 0ff4d000 00000000
<0> fffb7000 f0b29e18 f887025e f692bc14 0828afcc 00000001 00000003 00000000
<0> 0ff4d000 00000003 f692bc14 f423ed80 f7294014 f423ed80 00000000 f7294000
Call Trace:
 [<f8872ec3>] ? i915_gem_do_execbuffer+0x723/0xc90 [i915]
 [<f887025e>] ? i915_gem_shmem_pwrite_fast+0x3e/0x150 [i915]
 [<f8873aca>] ? i915_gem_execbuffer2+0x4a/0x1b0 [i915]
 [<f8873afc>] ? i915_gem_execbuffer2+0x7c/0x1b0 [i915]
 [<f871798d>] ? drm_ioctl+0x1ad/0x430 [drm]
 [<f8873a80>] ? i915_gem_execbuffer2+0x0/0x1b0 [i915]
 [<c01f7802>] ? vma_merge+0x192/0x290
 [<c05cc3fd>] ? do_page_fault+0x1cd/0x440
 [<c0226622>] ? vfs_ioctl+0x32/0xb0
 [<f87177e0>] ? drm_ioctl+0x0/0x430 [drm]
 [<c0226eb9>] ? do_vfs_ioctl+0x79/0x2d0
 [<c0227177>] ? sys_ioctl+0x67/0x80
 [<c05c90a4>] ? syscall_call+0x7/0xb
 [<c05c0000>] ? print_cpu_info+0x2/0x129
Code: d1 8b 50 5c 8d 48 58 8b 70 58 89 56 04 89 32 8b 97 00 10 00 00 89 8f 00 10 00 00 81 c7 fc 0f 00 00 89 78 58 89 50 5c 89 0a eb a7 <0f> 0b eb fe 0f 0b eb fe 8d b6 00 00 00 00 8d bc 27 00 00 00 00 
EIP: [<f886cebb>] i915_gem_object_unpin+0xbb/0xd0 [i915] SS:ESP 0068:f0b29dbc
---[ end trace fa9539da5658852a ]---