BUG: unable to handle kernel paging request at 46312420
IP: [<c01dfa07>] kmem_cache_alloc+0x57/0x120
*pde = 00000000 
Oops: 0000 [#13] SMP 
last sysfs file: /sys/kernel/uevent_seqnum
Modules linked in: lib80211_crypt_tkip wl(P) lib80211 ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs exportfs reiserfs binfmt_misc ppdev lp parport snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi iptable_filter joydev snd_seq_midi_event ip_tables x_tables snd_seq snd_timer snd_seq_device uvcvideo dm_crypt dell_wmi videodev v4l1_compat dell_laptop dcdbas snd mac80211 psmouse serio_raw cfg80211 led_class soundcore snd_page_alloc squashfs aufs nls_iso8859_1 nls_cp437 vfat fat dm_raid45 xor fbcon tileblit font bitblit softcursor usb_storage tg3 i915 drm i2c_algo_bit intel_agp agpgart video output [last unloaded: ssb]

Pid: 14195, comm: Xorg Tainted: P      D    (2.6.31-14-generic #48-Ubuntu) Latitude 2100                   
EIP: 0060:[<c01dfa07>] EFLAGS: 00010002 CPU: 1
EIP is at kmem_cache_alloc+0x57/0x120
EAX: c18094f0 EBX: 46312420 ECX: 00000800 EDX: 00000000
ESI: c07489cc EDI: 000080d0 EBP: ed691ddc ESP: ed691db4
 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process Xorg (pid: 14195, ti=ed690000 task=f66757f0 task.ti=ed690000)
Stack:
 00000001 00000000 c03806ce 01010101 00000800 000080d0 00000246 f7390780
<0> 00000000 00000006 ed691dfc c03806ce c01f8a02 f451b005 ed691e58 f7390780
<0> 00000000 00000006 ed691e20 c0380779 ed691ef0 ed691ef0 ed691e1c ed691e20
Call Trace:
 [<c03806ce>] ? alloc_tty_struct+0x1e/0x80
 [<c03806ce>] ? alloc_tty_struct+0x1e/0x80
 [<c01f8a02>] ? __d_lookup+0x102/0x110
 [<c0380779>] ? tty_init_dev+0x49/0x170
 [<c0380b74>] ? __tty_open+0x2d4/0x460
 [<c0380d1f>] ? tty_open+0x1f/0x40
 [<c01ea5bd>] ? chrdev_open+0xcd/0x190
 [<c01e5769>] ? __dentry_open+0xb9/0x230
 [<c01e59c5>] ? nameidata_to_filp+0x55/0x70
 [<c01ea4f0>] ? chrdev_open+0x0/0x190
 [<c01f34fa>] ? do_filp_open+0x53a/0x890
 [<c01e334e>] ? mem_cgroup_update_mapped_file_stat+0x1e/0x70
 [<c01e5500>] ? do_sys_open+0x50/0x150
 [<c01e5669>] ? sys_open+0x29/0x40
 [<c010336c>] ? syscall_call+0x7/0xb
Code: 26 00 89 45 f0 fa 90 8d 74 26 00 64 a1 5c ea 80 c0 8b 84 86 84 00 00 00 8b 48 10 89 4d e8 8b 18 85 db 0f 84 ab 00 00 00 8b 50 0c <8b> 14 93 89 10 8b 45 f0 50 9d 8d 74 26 00 85 db 0f 95 c0 c1 ef 
EIP: [<c01dfa07>] kmem_cache_alloc+0x57/0x120 SS:ESP 0068:ed691db4
CR2: 0000000046312420
---[ end trace 52098456a8ce7b48 ]---