i happens a lot here on utopic


Jan 31 14:14:35 callisto kernel: [61966.053944] ------------[ cut here ]------------
Jan 31 14:14:35 callisto kernel: [61966.053990] WARNING: CPU: 1 PID: 8023 at /build/buildd/linux-3.16.0/net/wireless/sme.c:791 cfg80211_roamed+0x91/0xa0 [cfg80211]
()
Jan 31 14:14:35 callisto kernel: [61966.053994] Modules linked in: wl(POE) cfg80211 dccp_diag dccp tcp_diag udp_diag inet_diag unix_diag nfnetlink_queue nfnetlink_
log nfnetlink mmc_block pci_stub vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) rfcomm bnep binfmt_misc xts gf128mul dm_crypt nls_iso8859_1 rtsx_usb_ms mems
tick btusb uvcvideo bluetooth videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common 6lowpan_iphc videodev media dell_wmi sparse_keymap dell_laptop dcdbas d
m_multipath scsi_dh snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_controller snd_hda_codec intel_rapl snd_hwdep x86_pkg_temp
_thermal intel_powerclamp snd_pcm kvm_intel kvm crct10dif_pclmul snd_seq_midi snd_seq_midi_event crc32_pclmul ghash_clmulni_intel snd_rawmidi cryptd snd_seq snd_se
q_device joydev snd_timer serio_raw snd lpc_ich shpchp mei_me soundcore mei mac_hid parport_pc ppdev i8k coretemp lp parport rtsx_usb_sdmmc rtsx_usb hid_generic us
bhid hid i915 i2c_algo_bit psmouse drm_kms_helper ahci r8169 drm libahci mii wmi video [last unloaded: cfg80211]
Jan 31 14:14:35 callisto kernel: [61966.054091] CPU: 1 PID: 8023 Comm: wl_event_handle Tainted: P        W  OE 3.16.0-29-generic #39-Ubuntu
Jan 31 14:14:35 callisto kernel: [61966.054094] Hardware name: Dell Inc. Inspiron 3521/06RYX8, BIOS A12 10/25/2013
Jan 31 14:14:35 callisto kernel: [61966.054097]  0000000000000009 ffff880152017dd0 ffffffff8178218a 0000000000000000
Jan 31 14:14:35 callisto kernel: [61966.054101]  ffff880152017e08 ffffffff8106fedd ffff880191f16000 ffff8801d5800300
Jan 31 14:14:35 callisto kernel: [61966.054105]  00000000000000a2 ffff88008af77580 ffff88009dcc5a78 ffff880152017e18
Jan 31 14:14:35 callisto kernel: [61966.054110] Call Trace:
Jan 31 14:14:35 callisto kernel: [61966.054122]  [<ffffffff8178218a>] dump_stack+0x45/0x56
Jan 31 14:14:35 callisto kernel: [61966.054129]  [<ffffffff8106fedd>] warn_slowpath_common+0x7d/0xa0
Jan 31 14:14:35 callisto kernel: [61966.054134]  [<ffffffff8106ffba>] warn_slowpath_null+0x1a/0x20
Jan 31 14:14:35 callisto kernel: [61966.054152]  [<ffffffffc08ae981>] cfg80211_roamed+0x91/0xa0 [cfg80211]
Jan 31 14:14:35 callisto kernel: [61966.054210]  [<ffffffffc113f8cb>] wl_notify_roaming_status+0xcb/0x150 [wl]
Jan 31 14:14:35 callisto kernel: [61966.054259]  [<ffffffffc113c602>] wl_event_handler+0x62/0x260 [wl]
Jan 31 14:14:35 callisto kernel: [61966.054305]  [<ffffffffc113c5a0>] ? wl_free_wdev.isra.23+0x80/0x80 [wl]
Jan 31 14:14:35 callisto kernel: [61966.054312]  [<ffffffff81094c6b>] kthread+0xdb/0x100
Jan 31 14:14:35 callisto kernel: [61966.054317]  [<ffffffff81094b90>] ? kthread_create_on_node+0x1c0/0x1c0
Jan 31 14:14:35 callisto kernel: [61966.054323]  [<ffffffff8178a0fc>] ret_from_fork+0x7c/0xb0
Jan 31 14:14:35 callisto kernel: [61966.054328]  [<ffffffff81094b90>] ? kthread_create_on_node+0x1c0/0x1c0
Jan 31 14:14:35 callisto kernel: [61966.054331] ---[ end trace 6080fcd41628772e ]---