------------[ cut here ]------------
WARNING: at /build/buildd/linux-2.6.35/net/wireless/core.c:633 wdev_cleanup_work+0xa7/0xd0 [cfg80211]()
Hardware name: 6475AE1
Modules linked in: autofs4 hidp hid binfmt_misc parport_pc ppdev vboxnetadp vboxnetflt vboxdrv kvm_intel kvm rfcomm snd_hda_codec_conexant sco snd_hda_intel snd_hda_codec bnep arc4 l2cap snd_hwdep snd_pcm snd_seq_midi hdaps snd_rawmidi pcmcia snd_seq_midi_event tp_smapi thinkpad_ec yenta_socket pcmcia_rsrc iwlagn snd_seq uvcvideo btusb pcmcia_core joydev videodev snd_timer snd_seq_device i915 drm_kms_helper drm i2c_algo_bit thinkpad_acpi video led_class output iwlcore mac80211 snd lp intel_agp agpgart tpm_tis tpm tpm_bios nvram v4l1_compat soundcore cfg80211 snd_page_alloc bluetooth psmouse serio_raw parport firewire_ohci ahci firewire_core libahci e1000e crc_itu_t
Pid: 741, comm: cfg80211 Not tainted 2.6.35-19-generic #28-Ubuntu
Call Trace:
 [<c014a812>] warn_slowpath_common+0x72/0xa0
 [<f8276027>] ? wdev_cleanup_work+0xa7/0xd0 [cfg80211]
 [<f8276027>] ? wdev_cleanup_work+0xa7/0xd0 [cfg80211]
 [<c014a862>] warn_slowpath_null+0x22/0x30
 [<f8276027>] wdev_cleanup_work+0xa7/0xd0 [cfg80211]
 [<c016155e>] run_workqueue+0x8e/0x150
 [<f8275f80>] ? wdev_cleanup_work+0x0/0xd0 [cfg80211]
 [<c01616a4>] worker_thread+0x84/0xe0
 [<c0165920>] ? autoremove_wake_function+0x0/0x50
 [<c0161620>] ? worker_thread+0x0/0xe0
 [<c01654f4>] kthread+0x74/0x80
 [<c0165480>] ? kthread+0x0/0x80
 [<c010363e>] kernel_thread_helper+0x6/0x10
---[ end trace 7c377d504d068941 ]---