BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<(null)>] (null)
*pde = 6e9a4067 
Oops: 0000 [#1] SMP 
last sysfs file: /sys/devices/pci0000:00/0000:00:01.0/0000:01:05.0/enable
Modules linked in: binfmt_misc ppdev snd_hda_codec_realtek arc4 ecb iptable_filter rt61pci snd_hda_intel crc_itu_t snd_hda_codec snd_hwdep rt2x00pci snd_pcm_oss snd_mixer_oss rt2x00lib led_class snd_pcm ip_tables x_tables snd_seq_dummy input_polldev snd_seq_oss mac80211 snd_seq_midi cfg80211 snd_rawmidi snd_seq_midi_event eeprom_93cx6 snd_seq snd_timer snd_seq_device joydev i2c_piix4 snd soundcore snd_page_alloc psmouse serio_raw shpchp lp parport radeon usb_storage usbhid ttm drm i2c_algo_bit 8139too 8139cp mii video output ati_agp agpgart

Pid: 1294, comm: Xorg Not tainted (2.6.31-14-generic #48-Ubuntu) DIXONSXP                        
EIP: 0060:[<00000000>] EFLAGS: 00013282 CPU: 0
EIP is at 0x0
EAX: ffffffea EBX: f8ce9000 ECX: ffffffa4 EDX: 015fb000
ESI: f8cea000 EDI: f8eea000 EBP: 00007f2a ESP: f5cc5f1c
 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process Xorg (pid: 1294, ti=f5cc4000 task=f5d6e480 task.ti=f5cc4000)
Stack:
 00000000 00000000 0000c350 f68a3500 0000002c f6fcd510 f5cc5f3c c02c7acf
<0> f5cc5f64 1bc748e0 f6b275c0 f82d6644 bfd61990 f5cc5f70 c01f4cf3 bfd61990
<0> bfd61990 40546440 f5d17b80 f5d17b80 0000000a f5cc5f8c c01f4fc1 c01e7100
Call Trace:
 [<c02c7acf>] ? security_file_permission+0xf/0x20
 [<c01f4cf3>] ? vfs_ioctl+0x73/0x90
 [<c01f4fc1>] ? do_vfs_ioctl+0x71/0x310
 [<c01e7100>] ? do_sync_write+0x0/0x100
 [<c01f52bf>] ? sys_ioctl+0x5f/0x80
 [<c010336c>] ? syscall_call+0x7/0xb
Code:  Bad EIP value.
EIP: [<00000000>] 0x0 SS:ESP 0068:f5cc5f1c
CR2: 0000000000000000
---[ end trace bfee134784edea9e ]---