------------[ cut here ]------------
WARNING: at /build/buildd/linux-2.6.32/net/wireless/core.c:614 wdev_cleanup_work+0xe9/0x110 [cfg80211]()
Hardware name: XPS M1530                       
Modules linked in: nls_iso8859_1 nls_cp437 vfat fat cryptd aes_x86_64 aes_generic binfmt_misc rfcomm ppdev sco bridge stp bnep l2cap dm_crypt snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss dell_wmi snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device btusb bluetooth arc4 iwl3945 iwlcore mac80211 dell_laptop dcdbas joydev ricoh_mmc sdhci_pci sdhci led_class cfg80211 psmouse serio_raw snd uvcvideo videodev v4l1_compat v4l2_compat_ioctl32 nvidia(P) soundcore snd_page_alloc lp parport usbhid hid ohci1394 video usb_storage output ieee1394 ahci fbcon tileblit font bitblit softcursor sky2 vga16fb vgastate intel_agp
Pid: 9, comm: events/0 Tainted: P           2.6.32-21-generic #32-Ubuntu
Call Trace:
 [<ffffffff81066d0b>] warn_slowpath_common+0x7b/0xc0
 [<ffffffff81066d64>] warn_slowpath_null+0x14/0x20
 [<ffffffffa09890f9>] wdev_cleanup_work+0xe9/0x110 [cfg80211]
 [<ffffffffa0989010>] ? wdev_cleanup_work+0x0/0x110 [cfg80211]
 [<ffffffff81080777>] run_workqueue+0xc7/0x1a0
 [<ffffffff810808f3>] worker_thread+0xa3/0x110
 [<ffffffff81085320>] ? autoremove_wake_function+0x0/0x40
 [<ffffffff81080850>] ? worker_thread+0x0/0x110
 [<ffffffff81084fa6>] kthread+0x96/0xa0
 [<ffffffff810141ea>] child_rip+0xa/0x20
 [<ffffffff81084f10>] ? kthread+0x0/0xa0
 [<ffffffff810141e0>] ? child_rip+0x0/0x20
---[ end trace 571e6c10bd1879f8 ]---