------------[ cut here ]------------
WARNING: at /build/buildd/linux-2.6.32/kernel/softirq.c:143 local_bh_enable_ip+0x7b/0xa0()
Hardware name: Aspire 4530     
Modules linked in: binfmt_misc snd_hda_codec_realtek rfcomm sco bridge stp bnep ppdev parport_pc l2cap vmblock vmmon btusb bluetooth arc4 ath9k fbcon tileblit font bitblit mac80211 ath softcursor video output acer_wmi snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm uvcvideo videodev v4l1_compat v4l2_compat_ioctl32 joydev snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd nvidia(P) vga16fb vgastate cfg80211 led_class psmouse serio_raw soundcore snd_page_alloc shpchp edac_core edac_mce_amd i2c_nforce2 lp parport usbhid hid usb_storage tg3 ahci
Pid: 886, comm: wpa_supplicant Tainted: P           2.6.32-21-generic #32-Ubuntu
Call Trace:
 [<ffffffff81066d0b>] warn_slowpath_common+0x7b/0xc0
 [<ffffffff81066d64>] warn_slowpath_null+0x14/0x20
 [<ffffffff8106de4b>] local_bh_enable_ip+0x7b/0xa0
 [<ffffffff81540e69>] _spin_unlock_bh+0x19/0x20
 [<ffffffffa0def955>] ath_tx_node_cleanup+0x185/0x1b0 [ath9k]
 [<ffffffffa0de9d77>] ath9k_sta_notify+0x57/0xb0 [ath9k]
 [<ffffffffa0d8489c>] __sta_info_unlink+0x15c/0x1f0 [mac80211]
 [<ffffffffa0d8496d>] sta_info_unlink+0x3d/0x60 [mac80211]
 [<ffffffffa0d8ce96>] ieee80211_set_disassoc+0x1b6/0x220 [mac80211]
 [<ffffffffa0d8d1c1>] ieee80211_mgd_deauth+0x111/0x120 [mac80211]
 [<ffffffff811548e0>] ? __pollwait+0x0/0xf0
 [<ffffffffa0d927de>] ieee80211_deauth+0x1e/0x20 [mac80211]
 [<ffffffffa0116f4e>] __cfg80211_mlme_deauth+0xee/0x130 [cfg80211]
 [<ffffffff811549d0>] ? pollwake+0x0/0x60
 [<ffffffff814e13d0>] ? unix_stream_recvmsg+0x2c0/0x580
 [<ffffffffa011a709>] __cfg80211_disconnect+0x159/0x1d0 [cfg80211]
 [<ffffffffa011dd24>] cfg80211_wext_siwmlme+0x94/0xb0 [cfg80211]
 [<ffffffff81520a1c>] ioctl_standard_iw_point+0x1cc/0x390
 [<ffffffffa011dc90>] ? cfg80211_wext_siwmlme+0x0/0xb0 [cfg80211]
 [<ffffffff81520be0>] ? ioctl_standard_call+0x0/0xd0
 [<ffffffff81520fc0>] ? ioctl_private_call+0x0/0xa0
 [<ffffffff81520c81>] ioctl_standard_call+0xa1/0xd0
 [<ffffffff8145ed30>] ? __dev_get_by_name+0xa0/0xc0
 [<ffffffff81520be0>] ? ioctl_standard_call+0x0/0xd0
 [<ffffffff815203b9>] wireless_process_ioctl+0xe9/0x170
 [<ffffffff81520be0>] ? ioctl_standard_call+0x0/0xd0
 [<ffffffff815204b1>] wext_ioctl_dispatch+0x71/0xb0
 [<ffffffff81520fc0>] ? ioctl_private_call+0x0/0xa0
 [<ffffffff81520626>] wext_handle_ioctl+0x46/0x90
 [<ffffffff8101c79a>] ? save_i387_xstate+0xda/0x220
 [<ffffffff8145ffc3>] dev_ioctl+0x423/0x430
 [<ffffffff8114284a>] ? do_sync_read+0xfa/0x140
 [<ffffffff8144a3bd>] sock_ioctl+0x9d/0x280
 [<ffffffff81152a92>] vfs_ioctl+0x22/0xa0
 [<ffffffff81250b96>] ? security_file_permission+0x16/0x20
 [<ffffffff81152d41>] do_vfs_ioctl+0x81/0x380
 [<ffffffff81143231>] ? vfs_read+0x181/0x1a0
 [<ffffffff81012e55>] ? sys_rt_sigreturn+0x235/0x260
 [<ffffffff811530c1>] sys_ioctl+0x81/0xa0
 [<ffffffff810131b2>] system_call_fastpath+0x16/0x1b
---[ end trace 9997fdcc05f23c39 ]---