May  3 17:26:03 hostnamex kernel: [ 3517.858785] BUG: unable to handle kernel NULL pointer dereference at 000000000000002c
May  3 17:26:03 hostnamex kernel: [ 3517.858799] IP: [<ffffffffa03ea3a8>] i915_gem_execbuffer+0x1e8/0x740 [i915]
May  3 17:26:03 hostnamex kernel: [ 3517.858821] PGD 13a128067 PUD 1379ae067 PMD 0 
May  3 17:26:03 hostnamex kernel: [ 3517.858830] Oops: 0000 [#1] SMP 
May  3 17:26:03 hostnamex kernel: [ 3517.858836] last sysfs file: /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
May  3 17:26:03 hostnamex kernel: [ 3517.858844] Dumping ftrace buffer:
May  3 17:26:03 hostnamex kernel: [ 3517.858849]    (ftrace buffer empty)
May  3 17:26:03 hostnamex kernel: [ 3517.858852] CPU 1 
May  3 17:26:03 hostnamex kernel: [ 3517.858856] Modules linked in: vmnet parport_pc vmci vmmon i915 drm binfmt_misc ppdev bridge stp bnep input_polldev joydev uinput cdc_acm lp parport thinkpad_acpi snd_hda_intel nvram snd_pcm_oss snd_mixer_oss arc4 ecb snd_pcm snd_seq_dummy snd_seq_oss psmouse zaurus iwlagn iTCO_wdt snd_seq_midi snd_rawmidi snd_seq_midi_event pcspkr serio_raw cdc_ether iwlcore usbnet iTCO_vendor_support snd_seq led_class cdc_wdm mii snd_timer snd_seq_device mac80211 uvcvideo compat_ioctl32 snd soundcore cfg80211 snd_page_alloc videodev v4l1_compat btusb intel_agp video output sha256_generic aes_x86_64 aes_generic cbc usb_storage usbhid dm_crypt e1000e fbcon tileblit font bitblit softcursor
May  3 17:26:03 hostnamex kernel: [ 3517.858961] Pid: 3454, comm: Xorg Not tainted 2.6.28-11-generic #42-Ubuntu
May  3 17:26:03 hostnamex kernel: [ 3517.858965] RIP: 0010:[<ffffffffa03ea3a8>]  [<ffffffffa03ea3a8>] i915_gem_execbuffer+0x1e8/0x740 [i915]
May  3 17:26:03 hostnamex kernel: [ 3517.858981] RSP: 0018:ffff88013a13ddd8  EFLAGS: 00010202
May  3 17:26:03 hostnamex kernel: [ 3517.858985] RAX: 000000000000000e RBX: 000000000000000e RCX: ffff88013904a000
May  3 17:26:03 hostnamex kernel: [ 3517.858989] RDX: ffff880106c07300 RSI: ffffffffa03c6d10 RDI: ffff8801098c26c0
May  3 17:26:03 hostnamex kernel: [ 3517.858994] RBP: ffff88013a13de58 R08: 00000000000000c0 R09: ffff88012f8e6420
May  3 17:26:03 hostnamex kernel: [ 3517.858999] R10: 0000000000000001 R11: 0000000000003246 R12: 0000000000000000
May  3 17:26:03 hostnamex kernel: [ 3517.859003] R13: 000000000000000e R14: ffff8801394b1880 R15: ffff8800aa86cbc0
May  3 17:26:03 hostnamex kernel: [ 3517.859009] FS:  00007ff4c1d50700(0000) GS:ffff88013b802d80(0000) knlGS:0000000000000000
May  3 17:26:03 hostnamex kernel: [ 3517.859014] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
May  3 17:26:03 hostnamex kernel: [ 3517.859018] CR2: 000000000000002c CR3: 000000013a12b000 CR4: 00000000000006a0
May  3 17:26:03 hostnamex kernel: [ 3517.859023] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
May  3 17:26:03 hostnamex kernel: [ 3517.859027] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
May  3 17:26:03 hostnamex kernel: [ 3517.859033] Process Xorg (pid: 3454, threadinfo ffff88013a13c000, task ffff8801395f2cc0)
May  3 17:26:03 hostnamex kernel: [ 3517.859036] Stack:
May  3 17:26:03 hostnamex kernel: [ 3517.859039]  000000003a13de08 ffff88003d1cad20 ffff88013a13ddf8 ffff880109857300
May  3 17:26:03 hostnamex kernel: [ 3517.859047]  ffff88013a13de28 ffff88013904a000 ffff88013bd543d0 ffff88013904a028
May  3 17:26:03 hostnamex kernel: [ 3517.859056]  ffff8800b6545200 ffff880106c07300 000000003a13de58 00000000fffffff4
May  3 17:26:03 hostnamex kernel: [ 3517.859066] Call Trace:
May  3 17:26:03 hostnamex kernel: [ 3517.859070]  [<ffffffffa03c57fa>] drm_ioctl+0x10a/0x330 [drm]
May  3 17:26:03 hostnamex kernel: [ 3517.859095]  [<ffffffff802106c5>] ? __switch_to+0x2a5/0x490
May  3 17:26:03 hostnamex kernel: [ 3517.859108]  [<ffffffffa03ea1c0>] ? i915_gem_execbuffer+0x0/0x740 [i915]
May  3 17:26:03 hostnamex kernel: [ 3517.859122]  [<ffffffff802f631d>] vfs_ioctl+0x7d/0xa0
May  3 17:26:03 hostnamex kernel: [ 3517.859132]  [<ffffffff8069c55c>] ? thread_return+0x37/0x36b
May  3 17:26:03 hostnamex kernel: [ 3517.859142]  [<ffffffff802f6685>] do_vfs_ioctl+0x75/0x230
May  3 17:26:03 hostnamex kernel: [ 3517.859149]  [<ffffffff802f68d9>] sys_ioctl+0x99/0xa0
May  3 17:26:03 hostnamex kernel: [ 3517.859156]  [<ffffffff802e82a0>] ? sys_read+0x50/0x90
May  3 17:26:03 hostnamex kernel: [ 3517.859165]  [<ffffffff8021253a>] system_call_fastpath+0x16/0x1b
May  3 17:26:03 hostnamex kernel: [ 3517.859172] Code: 00 00 00 00 48 8b 4d a8 c7 81 8c 04 00 00 00 00 00 00 c7 81 90 04 00 00 00 00 00 00 41 8b 47 08 85 c0 0f 84 40 02 00 00 4c 8b 22 <45> 8b 44 24 2c 45 8b 54 24 30 4d 8b 4c 24 08 49 8b 44 24 38 41 
May  3 17:26:03 hostnamex kernel: [ 3517.859243] RIP  [<ffffffffa03ea3a8>] i915_gem_execbuffer+0x1e8/0x740 [i915]
May  3 17:26:03 hostnamex kernel: [ 3517.859257]  RSP <ffff88013a13ddd8>
May  3 17:26:03 hostnamex kernel: [ 3517.859260] CR2: 000000000000002c
May  3 17:26:03 hostnamex kernel: [ 3517.859265] ---[ end trace aec2b536afe44436 ]---