BUG: unable to handle kernel NULL pointer dereference at 00000004
IP: [<c0127ba8>] __ticket_spin_lock+0x8/0x20
*pde = 3468d067 *pte = 00000000 
Oops: 0002 [#1] SMP 
last sysfs file: /sys/devices/pci0000:00/0000:00:1e.0/0000:02:01.0/net/wlan0/statistics/collisions
Modules linked in: usb_storage vboxnetadp vboxnetflt vboxdrv binfmt_misc ppdev joydev arc4 ecb pcmcia rt2500pci sdhci_pci rt2x00pci yenta_socket sdhci rt2x00lib input_polldev led_class rsrc_nonstatic mac80211 cfg80211 eeprom_93cx6 pcmcia_core psmouse serio_raw shpchp lp parport snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy iptable_filter snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device ip_tables x_tables snd soundcore snd_page_alloc 8139too radeon ttm drm i2c_algo_bit 8139cp mii ohci1394 ieee1394 intel_agp agpgart

Pid: 6, comm: events/0 Tainted: G        W  (2.6.31-14-generic #48-Ubuntu) CANYON-INTEL ODEM
EIP: 0060:[<c0127ba8>] EFLAGS: 00010202 CPU: 0
EIP is at __ticket_spin_lock+0x8/0x20
EAX: 00000004 EBX: f7043f48 ECX: c180dba4 EDX: 00000100
ESI: e7c240bc EDI: c180dba0 EBP: f7043f1c ESP: f7043f1c
 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process events/0 (pid: 6, ti=f7042000 task=f7033ed0 task.ti=f7042000)
Stack:
 f7043f24 c05708b8 f7043f2c f80cb3be f7043f58 f80c621d 00000000 f7043f48
<0> f7043f8c c056e97c e7c24010 00000000 e7c240bc c180dba0 c180dba0 f7043f8c
<0> c0157a7e c08145c0 f7034168 c08145c0 00000000 000004f4 c08145c0 c180dba4
Call Trace:
 [<c05708b8>] ? _spin_lock+0x8/0x10
 [<f80cb3be>] ? RTSpinlockAcquire+0xe/0x10 [vboxnetflt]
 [<f80c621d>] ? vboxNetFltLinuxXmitTask+0x2d/0x1d0 [vboxnetflt]
 [<c056e97c>] ? schedule+0x40c/0x730
 [<c0157a7e>] ? run_workqueue+0x6e/0x140
 [<f80c61f0>] ? vboxNetFltLinuxXmitTask+0x0/0x1d0 [vboxnetflt]
 [<c0157bd8>] ? worker_thread+0x88/0xe0
 [<c015c280>] ? autoremove_wake_function+0x0/0x40
 [<c0157b50>] ? worker_thread+0x0/0xe0
 [<c015bf8c>] ? kthread+0x7c/0x90
 [<c015bf10>] ? kthread+0x0/0x90
 [<c0104007>] ? kernel_thread_helper+0x7/0x10
Code: ff ff 90 b9 5a 7a 12 c0 b8 5d 7a 12 c0 e9 59 ff ff ff 90 b9 60 7a 12 c0 b8 63 7a 12 c0 e9 49 ff ff ff 90 55 ba 00 01 00 00 89 e5 <3e> 66 0f c1 10 38 f2 74 06 f3 90 8a 10 eb f6 5d c3 8d b4 26 00 
EIP: [<c0127ba8>] __ticket_spin_lock+0x8/0x20 SS:ESP 0068:f7043f1c
CR2: 0000000000000004
---[ end trace a7919e7f17c0a727 ]---