------------[ cut here ]------------
WARNING: at /build/buildd/linux-2.6.35/net/mac80211/scan.c:265 ieee80211_scan_completed+0x1c7/0x1e0 [mac80211]()
Hardware name: HP Pavilion dv6500 Notebook PC    
Modules linked in: binfmt_misc parport_pc ppdev snd_hda_codec_si3054 snd_hda_codec_realtek arc4 snd_hda_intel joydev snd_hda_codec i915 snd_hwdep snd_pcm iwl3945 snd_seq_midi snd_rawmidi iwlcore drm_kms_helper snd_seq_midi_event r852 drm snd_seq sm_common snd_timer nand snd_seq_device nand_ids uvcvideo nand_ecc mac80211 videodev i2c_algo_bit mtd psmouse v4l1_compat snd v4l2_compat_ioctl32 soundcore cfg80211 snd_page_alloc intel_agp video lp serio_raw hp_wmi output parport ahci firewire_ohci firewire_core crc_itu_t sdhci_pci sdhci led_class r8169 libahci mii
Pid: 750, comm: iwl3945 Tainted: G        W   2.6.35-22-generic #32-Ubuntu
Call Trace:
 [<ffffffff8106077f>] warn_slowpath_common+0x7f/0xc0
 [<ffffffff810607da>] warn_slowpath_null+0x1a/0x20
 [<ffffffffa013cb47>] ieee80211_scan_completed+0x1c7/0x1e0 [mac80211]
 [<ffffffffa027132e>] iwl_bg_scan_completed+0xbe/0xc0 [iwlcore]
 [<ffffffffa0271270>] ? iwl_bg_scan_completed+0x0/0xc0 [iwlcore]
 [<ffffffff8107a765>] run_workqueue+0xc5/0x1a0
 [<ffffffff8107a8e3>] worker_thread+0xa3/0x110
 [<ffffffff8107f610>] ? autoremove_wake_function+0x0/0x40
 [<ffffffff8107a840>] ? worker_thread+0x0/0x110
 [<ffffffff8107f0b6>] kthread+0x96/0xa0
 [<ffffffff8100aee4>] kernel_thread_helper+0x4/0x10
 [<ffffffff8107f020>] ? kthread+0x0/0xa0
 [<ffffffff8100aee0>] ? kernel_thread_helper+0x0/0x10
---[ end trace 19f7acef18eb9e49 ]---