WARNING: CPU: 2 PID: 827 at net/wireless/sme.c:795 cfg80211_roamed+0x97/0xa0 [cfg80211]()

WARNING: CPU: 2 PID: 827 at net/wireless/sme.c:795 cfg80211_roamed+0x97/0xa0 [cfg80211]()

[Krzysztof Kolasa]

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syslog trace:

Nov 29 15:09:52 krzysiek-hp1 kernel: [25459.769263] ------------[ cut 
here ]------------
Nov 29 15:09:52 krzysiek-hp1 kernel: [25459.769318] WARNING: CPU: 2 PID: 
827 at net/wireless/sme.c:795 cfg80211_roamed+0x97/0xa0 [cfg80211]()
Nov 29 15:09:52 krzysiek-hp1 kernel: [25459.769322] Modules linked in: 
xts(F) gf128mul(F) dm_crypt(F) pci_stub(F) vboxpci(OF) vboxnetadp(OF) 
vboxnetflt(OF) vboxdrv(OF) bnep(F) rfcomm(F) bluetooth(F) binfmt_misc(F) 
fglrx(POF) lib80211_crypt_tkip(F) wl(POF) snd_hda_codec_hdmi(F) 
snd_hda_codec_idt(F) snd_hda_intel(F) uvcvideo(F) snd_hda_codec(F) 
snd_hwdep(F) videobuf2_core(F) videodev(F) snd_pcm(F) 
videobuf2_vmalloc(F) videobuf2_memops(F) snd_seq_midi(F) snd_rawmidi(F) 
snd_seq_midi_event(F) snd_seq(F) psmouse(F) snd_timer(F) 
snd_seq_device(F) hp_wmi(F) serio_raw(F) sparse_keymap(F) joydev(F) 
cfg80211(F) video(F) snd(F) tpm_infineon(F) soundcore(F) hp_accel(F) 
lib80211(F) amd_iommu_v2(F) lis3lv02d(F) lpc_ich(F) snd_page_alloc(F) 
wmi(F) tpm_tis(F) input_polldev(F) ppdev(F) mac_hid(F) parport_pc(F) 
lp(F) parport(F) hid_generic(F) usbhid(F) hid(F) firewire_ohci(F) 
firewire_core(F) ahci(F) crc_itu_t(F) libahci(F) sdhci_pci(F) sdhci(F) 
e1000e(F) ptp(F) pps_core(F)
Nov 29 15:09:52 krzysiek-hp1 kernel: [25459.769424] CPU: 2 PID: 827 
Comm: wl_event_handle Tainted: PF          O 3.13.0-rc1-winsoft-x64 #6
Nov 29 15:09:52 krzysiek-hp1 kernel: [25459.769428] Hardware name: 
Hewlett-Packard HP ProBook 6560b/1619, BIOS 68SCE Ver. F.42 07/15/2013
Nov 29 15:09:52 krzysiek-hp1 kernel: [25459.769433] 000000000000031b 
ffff880231cabd48 ffffffff816e58f6 0000000000000007
Nov 29 15:09:52 krzysiek-hp1 kernel: [25459.769441] 0000000000000000 
ffff880231cabd88 ffffffff8104fbdc ffff880036cbae1a
Nov 29 15:09:52 krzysiek-hp1 kernel: [25459.769449] ffff88023169b000 
ffff880230335080 00000000000000a2 ffff8800aa03bf00
Nov 29 15:09:52 krzysiek-hp1 kernel: [25459.769456] Call Trace:
Nov 29 15:09:52 krzysiek-hp1 kernel: [25459.769472] [<ffffffff816e58f6>] 
dump_stack+0x46/0x58
Nov 29 15:09:52 krzysiek-hp1 kernel: [25459.769483] [<ffffffff8104fbdc>] 
warn_slowpath_common+0x8c/0xc0
Nov 29 15:09:52 krzysiek-hp1 kernel: [25459.769491] [<ffffffff8104fc2a>] 
warn_slowpath_null+0x1a/0x20
Nov 29 15:09:52 krzysiek-hp1 kernel: [25459.769520] [<ffffffffa01b3907>] 
cfg80211_roamed+0x97/0xa0 [cfg80211]
Nov 29 15:09:52 krzysiek-hp1 kernel: [25459.769597] [<ffffffffa04b9a23>] 
wl_bss_connect_done.isra.18+0xa3/0x1b0 [wl]
Nov 29 15:09:52 krzysiek-hp1 kernel: [25459.769663] [<ffffffffa04b9ca6>] 
wl_notify_connect_status+0x176/0x340 [wl]
Nov 29 15:09:52 krzysiek-hp1 kernel: [25459.769726] [<ffffffffa04b7c35>] 
wl_event_handler+0x55/0x1e0 [wl]
Nov 29 15:09:52 krzysiek-hp1 kernel: [25459.769787] [<ffffffffa04b7be0>] 
? wl_create_event_handler+0xc0/0xc0 [wl]
Nov 29 15:09:52 krzysiek-hp1 kernel: [25459.769795] [<ffffffff81072f29>] 
kthread+0xc9/0xe0
Nov 29 15:09:52 krzysiek-hp1 kernel: [25459.769803] [<ffffffff81072e60>] 
? flush_kthread_worker+0xb0/0xb0
Nov 29 15:09:52 krzysiek-hp1 kernel: [25459.769811] [<ffffffff816fc6ec>] 
ret_from_fork+0x7c/0xb0
Nov 29 15:09:52 krzysiek-hp1 kernel: [25459.769818] [<ffffffff81072e60>] 
? flush_kthread_worker+0xb0/0xb0
Nov 29 15:09:52 krzysiek-hp1 kernel: [25459.769823] ---[ end trace 
643f04fdb2db61b9 ]---

This problem is reported on fedora project retrace and looks that began 
with the kernel version 3.10.9

http://retrace.fedoraproject.org/faf/reports/197610/




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Re: WARNING: CPU: 2 PID: 827 at net/wireless/sme.c:795 cfg80211_roamed+0x97/0xa0 [cfg80211]()

[Johannes Berg]

On Fri, 2013-11-29 at 20:26 +0100, Krzysztof Kolasa wrote:

> cfg80211_roamed+0x97/0xa0 [cfg80211]
> wl_bss_connect_done.isra.18+0xa3/0x1b0 [wl]
> wl_notify_connect_status+0x176/0x340 [wl]

Not sure why we should care about proprietary drivers ...

johannes

Re: WARNING: CPU: 2 PID: 827 at net/wireless/sme.c:795 cfg80211_roamed+0x97/0xa0 [cfg80211]()

[Arend van Spriel]

On 11/29/13 23:14, Johannes Berg wrote:
> On Fri, 2013-11-29 at 20:26 +0100, Krzysztof Kolasa wrote:
>
>> cfg80211_roamed+0x97/0xa0 [cfg80211]
>> wl_bss_connect_done.isra.18+0xa3/0x1b0 [wl]
>> wl_notify_connect_status+0x176/0x340 [wl]
>
> Not sure why we should care about proprietary drivers ...

Even I am not sure ;-) There can be a couple of root causes, I guess. 
The bss was never given to cfg80211 or the bss has expired. It would be 
useful to find out why and share your findings on the more appropriate 
mailing list linux-wlan-client-support-list@broadcom.com as found on web 
page [1].

Gr. AvS

[1] http://www.broadcom.com/support/802.11/linux_sta.php