BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<c049f9dd>] register_netdevice+0xad/0x350
*pde = dd16f067 
Oops: 0000 [#1] SMP 
last sysfs file: /sys/bus/pci/drivers/wl/bind
Modules linked in: lib80211_crypt_tkip wl(P) lib80211 binfmt_misc bridge stp bnep ppdev arc4 snd_hda_codec_idt ecb snd_hda_intel snd_hda_codec rt73usb crc_itu_t rt2500usb rt2x00usb rt2x00lib snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq iptable_filter snd_timer input_polldev snd_seq_device dell_wmi psmouse ip_tables mac80211 snd x_tables serio_raw btusb soundcore snd_page_alloc dell_laptop lp usbhid cfg80211 dcdbas parport led_class fbcon tileblit font bitblit softcursor r8169 mii i915 drm i2c_algo_bit intel_agp agpgart video output [last unloaded: ssb]

Pid: 3720, comm: jockey-backend Tainted: P           (2.6.31-14-generic #48-Ubuntu) Inspiron 1440                   
EIP: 0060:[<c049f9dd>] EFLAGS: 00210246 CPU: 1
EIP is at register_netdevice+0xad/0x350
EAX: 00000000 EBX: f5a5a000 ECX: c08a4c00 EDX: 00000001
ESI: 00000000 EDI: 00000000 EBP: f34bbddc ESP: f34bbdbc
 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process jockey-backend (pid: 3720, ti=f34ba000 task=f35257f0 task.ti=f34ba000)
Stack:
 00000001 00008124 f34bbdd4 c056f684 c08a4c00 f5a5a000 f6ac9800 f5a5a000
<0> f34bbdec c049fcb2 f6ac9800 f7104800 f34bbec0 faeefdc0 00000080 f5a5a000
<0> f6ac9800 fafc8000 00000001 f7104800 f34bbe28 f69fc000 14e40001 00000011
Call Trace:
 [<c056f684>] ? mutex_lock+0x14/0x40
 [<c049fcb2>] ? register_netdev+0x32/0x50
 [<faeefdc0>] ? wl_pci_probe+0x315/0x45c [wl]
 [<c023a201>] ? sysfs_find_dirent+0x21/0x30
 [<c023adcf>] ? __sysfs_add_one+0x1f/0xc0
 [<c01f9ff0>] ? iput+0x20/0x60
 [<c023aaf6>] ? sysfs_addrm_finish+0x36/0xf0
 [<c023a3cb>] ? sysfs_addrm_start+0x5b/0xa0
 [<c032804e>] ? local_pci_probe+0xe/0x10
 [<c0328dd0>] ? pci_device_probe+0x60/0x80
 [<c03a2960>] ? really_probe+0x50/0x140
 [<c05707da>] ? _spin_lock_irqsave+0x2a/0x40
 [<c03a2a69>] ? driver_probe_device+0x19/0x20
 [<c03a1f37>] ? driver_bind+0x97/0xd0
 [<c03a1ea0>] ? driver_bind+0x0/0xd0
 [<c03a1647>] ? drv_attr_store+0x27/0x40
 [<c0239290>] ? sysfs_write_file+0x90/0x100
 [<c01e747a>] ? vfs_write+0x9a/0x190
 [<c0239200>] ? sysfs_write_file+0x0/0x100
 [<c0572d4b>] ? do_page_fault+0x19b/0x380
 [<c01e7f3d>] ? sys_write+0x3d/0x70
 [<c010336c>] ? syscall_call+0x7/0xb
Code: ff ff 3b 93 c4 01 00 00 72 dc 8b 83 b4 00 00 00 c7 83 a0 01 00 00 00 00 00 00 c7 83 a4 01 00 00 ff ff ff ff c7 43 4c ff ff ff ff <8b> 10 85 d2 74 1d 89 d8 ff d2 83 f8 00 89 c6 74 12 66 90 0f 8f 
EIP: [<c049f9dd>] register_netdevice+0xad/0x350 SS:ESP 0068:f34bbdbc
CR2: 0000000000000000
---[ end trace eb2733b42983f991 ]---