BUG: unable to handle kernel NULL pointer dereference at 000000a0
IP: [<c0390ec5>] fb_release+0x25/0x60
*pdpt = 0000000036ff8001 *pde = 0000000000000000 
Oops: 0000 [#1] SMP 
last sysfs file: /sys/devices/virtual/vtconsole/vtcon1/uevent
Modules linked in: snd_atiixp snd_ac97_codec ac97_bus snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device radeon ttm psmouse lp drm_kms_helper ppdev drm serio_raw parport_pc parport ati_agp snd i2c_algo_bit i2c_piix4 agpgart k8temp soundcore snd_page_alloc usbhid hid floppy r8169 sata_sil mii pata_atiixp

Pid: 280, comm: plymouthd Not tainted 2.6.35-12-generic-pae #17-Ubuntu MS-7168/MS-7168
EIP: 0060:[<c0390ec5>] EFLAGS: 00210286 CPU: 0
EIP is at fb_release+0x25/0x60
EAX: 00000098 EBX: f7505000 ECX: c0390ea0 EDX: f31b7880
ESI: f7505008 EDI: f71e5d48 EBP: f6debf44 ESP: f6debf3c
 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process plymouthd (pid: 280, ti=f6dea000 task=f6f7f230 task.ti=f6dea000)
Stack:
 f31b7880 00000008 f6debf74 c0223504 00000003 00000000 00000000 f77fc060
<0> f71e5d48 f75ebf80 f77fc060 f31b7880 f6f5e600 00000000 f6debf7c c022361d
<0> f6debf94 c021ff9c b6953000 f6f5e600 f31b7880 0000000b f6debfac c0220045
Call Trace:
 [<c0223504>] ? __fput+0xe4/0x1e0
 [<c022361d>] ? fput+0x1d/0x30
 [<c021ff9c>] ? filp_close+0x4c/0x80
 [<c0220045>] ? sys_close+0x75/0xc0
 [<c010945f>] ? sysenter_do_call+0x12/0x28
Code: bc 27 00 00 00 00 55 89 e5 83 ec 08 89 1c 24 89 74 24 04 0f 1f 44 00 00 8b 5a 70 8d 73 08 89 f0 e8 21 e6 25 00 8b 83 0c 03 00 00 <8b> 48 08 85 c9 74 0f ba 01 00 00 00 89 d8 ff d1 8b 83 0c 03 00 
EIP: [<c0390ec5>] fb_release+0x25/0x60 SS:ESP 0068:f6debf3c
CR2: 00000000000000a0
---[ end trace 8a7f05701ef7e0ab ]---