Comment 25 for bug 1159306

This is a problem for me too. I'm running Arch Linux with kernel 3.9.4, Lenovo E520.

Jun 21 16:46:02 localhost kernel: [324509.467112] WARNING: at net/wireless/sme.c:642 cfg80211_roamed+0x8c/0x90 [cfg80211]()
Jun 21 16:46:02 localhost kernel: [324509.467114] Hardware name:
Jun 21 16:46:02 localhost kernel: [324509.467115] Modules linked in: hid_dr ff_memless nfsv3 nfs_acl nfsv4 auth_rpcgss ppp_async crc_ccitt sha1_ssse3 sha1_generic ppp_mppe ppp_generic slhc michael_mic arc4 ecb uvcvideo btusb videobuf2_vmalloc videobuf2_memops videobuf2_core bluetooth videodev media hid_lenovo_tpkbd snd_hda_codec_hdmi snd_hda_codec_conexant joydev intel_powerclamp coretemp kvm_intel kvm crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel aes_x86_64 xts lib80211_crypt_tkip lrw gf128mul ablk_helper cryptd wl(PO) r8169 psmouse serio_raw mii snd_hda_intel snd_hda_codec snd_hwdep snd_pcm lib80211 snd_page_alloc cfg80211 thinkpad_acpi iTCO_wdt iTCO_vendor_support nvram microcode snd_timer snd soundcore i915 thermal ac video mperf intel_agp intel_gtt drm_kms_helper drm i2c_algo_bit wmi i2c_i801 i2c_core rfkill battery mei lpc_ich evdev processor button vboxnetadp(O) vboxnetflt(O) vboxdrv(O) nfs lockd sunrpc fscache ext4 crc16 mbcache jbd2 sr_mod cdrom sd_mod usbhid hid ahci libahci libata ehci_pci ehci_hcd scsi_mod usbcore sdhci_pci sdhci mmc_core usb_common
Jun 21 16:46:02 localhost kernel: [324509.467171] Pid: 195, comm: wl_event_handle Tainted: P W O 3.9.4-1-ARCH #1
Jun 21 16:46:02 localhost kernel: [324509.467172] Call Trace:
Jun 21 16:46:02 localhost kernel: [324509.467178] [<ffffffff810580b0>] warn_slowpath_common+0x70/0xa0
Jun 21 16:46:02 localhost kernel: [324509.467180] [<ffffffff8105819a>] warn_slowpath_null+0x1a/0x20
Jun 21 16:46:02 localhost kernel: [324509.467187] [<ffffffffa07468dc>] cfg80211_roamed+0x8c/0x90 [cfg80211]
Jun 21 16:46:02 localhost kernel: [324509.467197] [<ffffffffa08638ac>] wl_notify_roaming_status+0xac/0x130 [wl]
Jun 21 16:46:02 localhost kernel: [324509.467204] [<ffffffffa08604e5>] wl_event_handler+0x55/0x1f0 [wl]
Jun 21 16:46:02 localhost kernel: [324509.467211] [<ffffffffa0860490>] ? wl_deinit_priv_mem+0xa0/0xa0 [wl]
Jun 21 16:46:02 localhost kernel: [324509.467214] [<ffffffff8107b600>] kthread+0xc0/0xd0
Jun 21 16:46:02 localhost kernel: [324509.467217] [<ffffffff8107b540>] ? kthread_create_on_node+0x120/0x120
Jun 21 16:46:02 localhost kernel: [324509.467220] [<ffffffff814d9dec>] ret_from_fork+0x7c/0xb0
Jun 21 16:46:02 localhost kernel: [324509.467222] [<ffffffff8107b540>] ? kthread_create_on_node+0x120/0x120
Jun 21 16:46:02 localhost kernel: [324509.467223] ---[ end trace d01b8c711688f9e6 ]---