BUG: unable to handle kernel NULL pointer dereference at 0000011c
IP: [<c01bb811>] put_page+0x11/0x100
*pde = bb31e067 
Oops: 0000 [#1] SMP 
last sysfs file: /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:0f/PNP0C0A:00/power_supply/BAT0/charge_full
Modules linked in: binfmt_misc ppdev joydev snd_hda_codec_intelhdmi arc4 ecb 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 uvcvideo videodev v4l1_compat snd_seq_midi snd_rawmidi snd_seq_midi_event iptable_filter ip_tables x_tables ath9k mac80211 ath snd_seq snd_timer snd_seq_device led_class snd atl1c cfg80211 psmouse serio_raw soundcore snd_page_alloc lp parport fbcon tileblit font bitblit softcursor usbhid i915 drm i2c_algo_bit video output intel_agp agpgart

Pid: 753, comm: phy0 Not tainted (2.6.31-14-generic #48-Ubuntu) Aspire 4736Z    
EIP: 0060:[<c01bb811>] EFLAGS: 00010282 CPU: 0
EIP is at put_page+0x11/0x100
EAX: 0000011c EBX: 0000011c ECX: f69efd80 EDX: f2208140
ESI: f69efd80 EDI: f69efd80 EBP: f212bd84 ESP: f212bd70
 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process phy0 (pid: 753, ti=f212a000 task=f211a5b0 task.ti=f212a000)
Stack:
 00000000 00000000 00000002 f69efd80 f69efd80 f212bd94 c0493267 f69efd80
<0> 00000009 f212bda0 c0492da2 f510e1a0 f212bda8 c0492e3c f212bde4 f9297eaf
<0> 0000007b 0000007b 000000d8 000000e0 f510f148 c03182bd f22080c4 f22080c0
Call Trace:
 [<c0493267>] ? skb_release_data+0x87/0xa0
 [<c0492da2>] ? __kfree_skb+0x12/0x90
 [<c0492e3c>] ? consume_skb+0x1c/0x40
 [<f9297eaf>] ? ieee80211_tx_status+0x43f/0x470 [mac80211]
 [<c03182bd>] ? delay_tsc+0x3d/0x70
 [<f932db24>] ? ath_tx_complete+0x124/0x150 [ath9k]
 [<f9323df7>] ? ath9k_hw_setup_calibration+0x97/0x140 [ath9k]
 [<f932dbc1>] ? ath_tx_complete_buf+0x71/0xc0 [ath9k]
 [<c014b405>] ? __do_softirq+0xe5/0x1a0
 [<f932ef94>] ? ath_draintxq+0x134/0x280 [ath9k]
 [<f93301ee>] ? ath_drain_all_txq+0xce/0x140 [ath9k]
 [<f932c0e2>] ? ath_set_channel+0x82/0x200 [ath9k]
 [<f9328aae>] ? ath_update_chainmask+0x7e/0x90 [ath9k]
 [<f932c407>] ? ath9k_config+0x1a7/0x200 [ath9k]
 [<f9297972>] ? ieee80211_hw_config+0x72/0xb0 [mac80211]
 [<f929c146>] ? ieee80211_scan_work+0xb6/0x220 [mac80211]
 [<c056e97c>] ? schedule+0x40c/0x730
 [<c0157a7e>] ? run_workqueue+0x6e/0x140
 [<f929c090>] ? ieee80211_scan_work+0x0/0x220 [mac80211]
 [<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: fe ff ff f0 80 23 fb eb dc 90 55 b8 e0 be 1b c0 89 e5 e8 13 d8 f9 ff 5d c3 90 55 89 e5 83 ec 14 89 5d f4 89 c3 89 75 f8 89 7d fc <66> f7 00 00 c0 0f 85 cc 00 00 00 f0 ff 48 04 0f 94 c0 84 c0 74 
EIP: [<c01bb811>] put_page+0x11/0x100 SS:ESP 0068:f212bd70
CR2: 000000000000011c
---[ end trace d06c7e17e5d20bc9 ]---