------------[ cut here ]------------
WARNING: at /build/buildd/linux-2.6.31/net/mac80211/iface.c:651 ieee80211_teardown_sdata+0xda/0x1a0 [mac80211]()
Hardware name: 1000HE
Modules linked in: ipt_MASQUERADE xt_state ipt_REJECT xt_tcpudp nf_nat_h323 nf_conntrack_h323 nf_nat_pptp nf_conntrack_pptp nf_conntrack_proto_gre nf_nat_proto_gre nf_nat_tftp nf_conntrack_tftp nf_nat_sip nf_conntrack_sip nf_nat_irc nf_conntrack_irc nf_nat_ftp nf_conntrack_ftp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 arc4 ecb ath9k mac80211 led_class ath cfg80211 nls_iso8859_1 nls_cp437 vfat fat binfmt_misc ppdev 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 snd_seq_midi snd_rawmidi snd_seq_midi_event netbook snd_seq snd_timer snd_seq_device iptable_filter i2c_i801 ip_tables snd x_tables joydev soundcore snd_page_alloc uvcvideo videodev psmouse lp eeepc_laptop serio_raw v4l1_compat parport fbcon tileblit font bitblit softcursor usb_storage i915 drm i2c_algo_bit atl1e intel_agp agpgart video output
Pid: 1036, comm: wpa_supplicant Not tainted 2.6.31-14-generic #48-Ubuntu
Call Trace:
 [<c014518d>] warn_slowpath_common+0x6d/0xa0
 [<f8cce99a>] ? ieee80211_teardown_sdata+0xda/0x1a0 [mac80211]
 [<f8cce99a>] ? ieee80211_teardown_sdata+0xda/0x1a0 [mac80211]
 [<c01451d5>] warn_slowpath_null+0x15/0x20
 [<f8cce99a>] ieee80211_teardown_sdata+0xda/0x1a0 [mac80211]
 [<f8cceaaa>] ieee80211_if_change_type+0x4a/0xc0 [mac80211]
 [<f8cd1151>] ieee80211_change_iface+0x61/0xa0 [mac80211]
 [<f8c6a057>] cfg80211_wext_siwmode+0xc7/0x120 [cfg80211]
 [<c0555688>] ioctl_standard_call+0x58/0xf0
 [<c05557da>] T.788+0xba/0x140
 [<f8c69f90>] ? cfg80211_wext_siwmode+0x0/0x120 [cfg80211]
 [<c05558a9>] T.789+0x49/0x80
 [<c055590a>] wext_handle_ioctl+0x2a/0x70
 [<c049dc99>] dev_ioctl+0x249/0x250
 [<c048d73b>] sock_ioctl+0x1cb/0x260
 [<c048d570>] ? sock_ioctl+0x0/0x260
 [<c01f4c9c>] vfs_ioctl+0x1c/0x90
 [<c01f4fc1>] do_vfs_ioctl+0x71/0x310
 [<c0572d4b>] ? do_page_fault+0x19b/0x380
 [<c01f52bf>] sys_ioctl+0x5f/0x80
 [<c010336c>] syscall_call+0x7/0xb
---[ end trace 8ecade939a451162 ]---