Comment 4 for bug 1276651

I get a similar error when connection to any AP:

[ 533.763420] WARNING: CPU: 0 PID: 5198 at /build/buildd/linux-3.13.0/net/wireless/sme.c:924 cfg80211_connect+0x3f9/0x430 [cfg80211]()
[ 533.763424] Modules linked in: michael_mic arc4 ip6table_filter ip6_tables iptable_filter ip_tables x_tables cuse zram(C) rfcomm bnep bluetooth nfsd auth_rpcgss nfs_acl binfmt_misc nfs lockd sunrpc fscache dm_crypt lib80211_crypt_tkip snd_hda_codec_hdmi kvm wl(POF) snd_hda_codec_realtek snd_hda_intel lib80211 snd_hda_codec cfg80211 serio_raw k10temp snd_seq_midi snd_seq_midi_event snd_hwdep snd_rawmidi snd_pcm snd_seq sp5100_tco snd_page_alloc snd_seq_device i2c_piix4 snd_timer snd soundcore mac_hid parport_pc ppdev w83l785ts asb100 hwmon_vid lp parport f2fs uvesafb pata_acpi hid_generic usbhid hid radeon mxm_wmi r8169 firewire_ohci mii firewire_core i2c_algo_bit crc_itu_t ttm wmi drm_kms_helper drm pata_atiixp ahci ati_agp libahci
[ 533.763532] CPU: 0 PID: 5198 Comm: iwconfig Tainted: PF WC O 3.13.0-29-generic #53-Ubuntu
[ 533.763537] Hardware name: Gigabyte Technology Co., Ltd. GA-990FXA-UD3/GA-990FXA-UD3, BIOS F7 05/14/2012
[ 533.763542] 00000000 00000000 f6ae1d3c c164f613 00000000 f6ae1d6c c10567ee c182ba80
[ 533.763555] 00000000 0000144e f9bb7760 0000039c f9b9ba69 f9b9ba69 e9ce3c00 e9ce3c00
[ 533.763568] f692f000 f6ae1d7c c10568b2 00000009 00000000 f6ae1da8 f9b9ba69 000000d0
[ 533.763580] Call Trace:
[ 533.763594] [<c164f613>] dump_stack+0x41/0x52
[ 533.763604] [<c10567ee>] warn_slowpath_common+0x7e/0xa0
[ 533.763649] [<f9b9ba69>] ? cfg80211_connect+0x3f9/0x430 [cfg80211]
[ 533.763691] [<f9b9ba69>] ? cfg80211_connect+0x3f9/0x430 [cfg80211]
[ 533.763700] [<c10568b2>] warn_slowpath_null+0x22/0x30
[ 533.763742] [<f9b9ba69>] cfg80211_connect+0x3f9/0x430 [cfg80211]
[ 533.763752] [<c1138fda>] ? kmemdup+0x2a/0x40
[ 533.763805] [<f9bb148e>] cfg80211_mgd_wext_connect+0x11e/0x180 [cfg80211]
[ 533.763857] [<f9bb1a54>] cfg80211_mgd_wext_siwap+0x124/0x1a0 [cfg80211]
[ 533.763908] [<f9bb00e0>] cfg80211_wext_siwap+0xf0/0x180 [cfg80211]
[ 533.763960] [<f9bafff0>] ? cfg80211_wext_siwtxpower+0x190/0x190 [cfg80211]
[ 533.763968] [<c1639f17>] ioctl_standard_call+0x67/0x390
[ 533.764020] [<f9bafff0>] ? cfg80211_wext_siwtxpower+0x190/0x190 [cfg80211]
[ 533.764028] [<c1570d21>] ? dev_get_by_name_rcu+0x51/0x70
[ 533.764037] [<c163a43d>] wext_handle_ioctl+0x1fd/0x230
[ 533.764088] [<f9bafff0>] ? cfg80211_wext_siwtxpower+0x190/0x190 [cfg80211]
[ 533.764096] [<c15851ed>] dev_ioctl+0x26d/0x4e0
[ 533.764105] [<c155b44d>] sock_ioctl+0x12d/0x250
[ 533.764112] [<c155b320>] ? sock_fasync+0x80/0x80
[ 533.764121] [<c1189b02>] do_vfs_ioctl+0x2e2/0x4d0
[ 533.764129] [<c1659bb7>] ? __do_page_fault+0x237/0x510
[ 533.764138] [<c1164d2a>] ? kmem_cache_alloc+0x2a/0x190
[ 533.764146] [<c1017977>] ? init_fpu+0x77/0xa0
[ 533.764155] [<c1657560>] ? do_debug+0x180/0x180
[ 533.764162] [<c1017835>] ? fpu_finit+0x55/0x70
[ 533.764169] [<c1189d50>] SyS_ioctl+0x60/0x80
[ 533.764178] [<c165d90d>] sysenter_do_call+0x12/0x28
[ 533.764184] ---[ end trace d35411f740b485a8 ]---

Is this related? bcmwl version 6.30.223.141 on Ubuntu 14.04