BUG: unable to handle kernel paging request at a5a5000f
IP: [<c01bb811>] put_page+0x11/0x100
*pde = 00000000 
Oops: 0000 [#1] SMP 
last sysfs file: /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:08/PNP0C09:00/PNP0C0A:00/power_supply/BAT0/voltage_now
Modules linked in: nls_iso8859_1 nls_cp437 vfat fat usb_storage binfmt_misc ppdev arc4 ecb snd_hda_codec_conexant ath9k 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 iptable_filter ip_tables snd_rawmidi snd_seq_midi_event mac80211 ath snd_seq joydev snd_timer snd_seq_device x_tables snd uvcvideo psmouse cfg80211 lp soundcore acer_wmi videodev serio_raw atl1c snd_page_alloc parport v4l1_compat led_class fbcon tileblit font bitblit softcursor i915 drm i2c_algo_bit intel_agp agpgart video output

Pid: 850, comm: phy0 Not tainted (2.6.31-14-generic #48-Ubuntu) Aspire 4732Z                   
EIP: 0060:[<c01bb811>] EFLAGS: 00010282 CPU: 0
EIP is at put_page+0x11/0x100
EAX: a5a5000f EBX: a5a5000f ECX: cf1e67c0 EDX: ed5e1ea0
ESI: cf1e67c0 EDI: cf1e67c0 EBP: ec79dd84 ESP: ec79dd70
 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process phy0 (pid: 850, ti=ec79c000 task=ec5fd7f0 task.ti=ec79c000)
Stack:
 00000000 00000000 00000001 cf1e67c0 cf1e67c0 ec79dd94 c0493267 cf1e67c0
<0> 00000008 ec79dda0 c0492da2 ec3f21a0 ec79dda8 c0492e3c ec79dde4 f8abceaf
<0> 00000000 00000000 00000000 00000000 ec3f3148 00000000 ed5e18d8 ed5e18d4
Call Trace:
 [<c0493267>] ? skb_release_data+0x87/0xa0
 [<c0492da2>] ? __kfree_skb+0x12/0x90
 [<c0492e3c>] ? consume_skb+0x1c/0x40
 [<f8abceaf>] ? ieee80211_tx_status+0x43f/0x470 [mac80211]
 [<f9408b24>] ? ath_tx_complete+0x124/0x150 [ath9k]
 [<f93fedf7>] ? ath9k_hw_setup_calibration+0x97/0x140 [ath9k]
 [<f9408bc1>] ? ath_tx_complete_buf+0x71/0xc0 [ath9k]
 [<c014b405>] ? __do_softirq+0xe5/0x1a0
 [<f9409f94>] ? ath_draintxq+0x134/0x280 [ath9k]
 [<f940b1ee>] ? ath_drain_all_txq+0xce/0x140 [ath9k]
 [<f94070e2>] ? ath_set_channel+0x82/0x200 [ath9k]
 [<f9403aae>] ? ath_update_chainmask+0x7e/0x90 [ath9k]
 [<f9407407>] ? ath9k_config+0x1a7/0x200 [ath9k]
 [<f8abc972>] ? ieee80211_hw_config+0x72/0xb0 [mac80211]
 [<f8ac1146>] ? ieee80211_scan_work+0xb6/0x220 [mac80211]
 [<c056e97c>] ? schedule+0x40c/0x730
 [<c0157a7e>] ? run_workqueue+0x6e/0x140
 [<f8ac1090>] ? 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:ec79dd70
CR2: 00000000a5a5000f
---[ end trace 00e04c985c71610d ]---