BUG: unable to handle kernel NULL pointer dereference at 00000001
IP: [<c01bb811>] put_page+0x11/0x100
*pde = 6e885067 
Oops: 0000 [#1] SMP 
last sysfs file: /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:2e/PNP0C0A:00/power_supply/BAT1/charge_full
Modules linked in: binfmt_misc ppdev arc4 ecb snd_hda_codec_atihdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm ath9k snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event iptable_filter snd_seq ip_tables snd_timer joydev x_tables mac80211 snd_seq_device fglrx(P) ath uvcvideo snd videodev agpgart psmouse soundcore serio_raw i2c_piix4 atl1c v4l1_compat led_class snd_page_alloc shpchp cfg80211 lp parport usbhid video output

Pid: 903, comm: phy0 Tainted: P           (2.6.31-14-generic #48-Ubuntu) Aspire 4535     
EIP: 0060:[<c01bb811>] EFLAGS: 00010282 CPU: 1
EIP is at put_page+0x11/0x100
EAX: 00000001 EBX: 00000001 ECX: f1210b40 EDX: f0be7d40
ESI: f1210b40 EDI: f1210b40 EBP: f130dd84 ESP: f130dd70
 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process phy0 (pid: 903, ti=f130c000 task=f111cb60 task.ti=f130c000)
Stack:
 00000000 00000000 00000001 f1210b40 f1210b40 f130dd94 c0493267 f1210b40
<0> 00000009 f130dda0 c0492da2 f08581a0 f130dda8 c0492e3c f130dde4 f88d3eaf
<0> 00000000 00000000 00000000 00000000 f0859148 00000000 f0be7cbe f0be7cba
Call Trace:
 [<c0493267>] ? skb_release_data+0x87/0xa0
 [<c0492da2>] ? __kfree_skb+0x12/0x90
 [<c0492e3c>] ? consume_skb+0x1c/0x40
 [<f88d3eaf>] ? ieee80211_tx_status+0x43f/0x470 [mac80211]
 [<f89cfb24>] ? ath_tx_complete+0x124/0x150 [ath9k]
 [<f89cfbc1>] ? ath_tx_complete_buf+0x71/0xc0 [ath9k]
 [<c014b405>] ? __do_softirq+0xe5/0x1a0
 [<f89d0f94>] ? ath_draintxq+0x134/0x280 [ath9k]
 [<f89d21ee>] ? ath_drain_all_txq+0xce/0x140 [ath9k]
 [<f89ce0e2>] ? ath_set_channel+0x82/0x200 [ath9k]
 [<f89caaae>] ? ath_update_chainmask+0x7e/0x90 [ath9k]
 [<f89ce407>] ? ath9k_config+0x1a7/0x200 [ath9k]
 [<f88d3972>] ? ieee80211_hw_config+0x72/0xb0 [mac80211]
 [<f88d8146>] ? ieee80211_scan_work+0xb6/0x220 [mac80211]
 [<c056e97c>] ? schedule+0x40c/0x730
 [<c0157a7e>] ? run_workqueue+0x6e/0x140
 [<f88d8090>] ? 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:f130dd70
CR2: 0000000000000001
---[ end trace 43661d533a190748 ]---