Kernel Panic wlc_mac80211.c Line 6093

Kernel Panic wlc_mac80211.c Line 6093

[Jamie Kitson]

Hello,

I've received the following kernel panic twice in two days since I
started using the brcm80211 driver:

http://farm6.static.flickr.com/5202/5334637544_a0dacd5edd_b.jpg

I have a Dell M101z with:

03:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g/n
Wireless LAN Controller (rev 01)

I am running:

Linux jamie-laptop 2.6.36-ARCH #1 SMP PREEMPT Fri Dec 10 20:32:37 CET
2010 x86_64 AMD Athlon(tm) II Neo K325 Dual-Core Processor
AuthenticAMD GNU/Linux

Cheers, Jamie

RE: Kernel Panic wlc_mac80211.c Line 6093

[Brett Rudley]

> -----Original Message-----
> From: linux-wireless-owner@vger.kernel.org [mailto:linux-wireless-
> owner@vger.kernel.org] On Behalf Of Jamie Kitson
> Sent: Friday, January 07, 2011 4:38 PM
> To: linux-wireless@vger.kernel.org
> Subject: Kernel Panic wlc_mac80211.c Line 6093
> 
> Hello,
> 
> I've received the following kernel panic twice in two days since I
> started using the brcm80211 driver:
> 
> http://farm6.static.flickr.com/5202/5334637544_a0dacd5edd_b.jpg
> 
> I have a Dell M101z with:
> 
> 03:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g/n
> Wireless LAN Controller (rev 01)

Hmm, haven't seen this type of crash before.  Any special setup you are using?

Thanks
Brett

Re: Kernel Panic wlc_mac80211.c Line 6093

[Jamie Kitson]

> Hmm, haven't seen this type of crash before.  Any special setup you are using?

Not that I can think of. I still have the Broadcom STA compiled wl
driver installed but disabled. I installed the brcm80211 driver from
Arch's AUR repository:

http://aur.archlinux.org/packages.php?ID=42670

I have recently been fiddling about with laptop-mode, but I don't
think that has caused it as that doesn't reproduce it and there's been
no obvious acpi event when it's crashed.

Cheers, Jamie

Re: Kernel Panic wlc_mac80211.c Line 6093

[Jamie Kitson]

>> Hmm, haven't seen this type of crash before.  Any special setup you are using?
>
> Not that I can think of. I still have the Broadcom STA compiled wl

I do boot with the noapic kernel option if that would make any difference.

Jamie

Re: Kernel Panic wlc_mac80211.c Line 6093

[Jamie Kitson]

I don't know if it makes any difference but I tried again, this time
with a 2.6.37 kernel and got a slightly different error (almost
immediately x started, I guess when wireless was coming up):

http://farm6.static.flickr.com/5246/5343639268_88ee4da55e_b.jpg

Re: Kernel Panic wlc_mac80211.c Line 6093

[Jamie Kitson]

Someone here is suggesting that adding maxcpus=1 to the boot options
has fixed their crashes. Could this be my issue?

https://bbs.archlinux.org/viewtopic.php?pid=877645

Re: Kernel Panic wlc_mac80211.c Line 6093

[Jamie Kitson]

Further:

https://wiki.archlinux.org/index.php/Wireless_Setup#brcm80211

Re: Kernel Panic wlc_mac80211.c Line 6093

[Arend van Spriel]

Hi, Jamie

On 01/22/2011 12:12 PM, Jamie Kitson wrote:
> Someone here is suggesting that adding maxcpus=1 to the boot options
> has fixed their crashes. Could this be my issue?
>
What kernel are you using? Could you also provide the panic trace?
> https://bbs.archlinux.org/viewtopic.php?pid=877645
> --
> To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>

Gr. AvS

Re: Kernel Panic wlc_mac80211.c Line 6093

[Arend van Spriel]

Hi Jamie,

On 01/08/2011 01:37 AM, Jamie Kitson wrote:
> Hello,
>
> I've received the following kernel panic twice in two days since I
> started using the brcm80211 driver:
>
> http://farm6.static.flickr.com/5202/5334637544_a0dacd5edd_b.jpg
>
> I have a Dell M101z with:
>
> 03:00.0 Network controller: Broadcom Corporation BCM4313 802.11b/g/n
> Wireless LAN Controller (rev 01)
>
> I am running:
>
> Linux jamie-laptop 2.6.36-ARCH #1 SMP PREEMPT Fri Dec 10 20:32:37 CET
> 2010 x86_64 AMD Athlon(tm) II Neo K325 Dual-Core Processor
> AuthenticAMD GNU/Linux
>

Rereading the whole thread I noticed the PREEMPT in your uname message. 
Does this mean you are running with CONFIG_PREEMPT (Preemptible Kernel)? 
This may not be supported by this driver.

> Cheers, Jamie
> --
> To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>

-- 
Gr. AvS

Re: Kernel Panic wlc_mac80211.c Line 6093

[Jamie Kitson]

> Rereading the whole thread I noticed the PREEMPT in your uname message. Does
> this mean you are running with CONFIG_PREEMPT (Preemptible Kernel)?

Apparently so. I'm using the stock Arch kernel.

> This may not be supported by this driver.

Ok, how would I find out for sure?

Re: Kernel Panic wlc_mac80211.c Line 6093

[Jamie Kitson]

>> This may not be supported by this driver.
>
> Ok, how would I find out for sure?

I got this from the irc channel:

[12:55] <johill> JamieKitson: it doesn't, at least arend said that a
couple of days ago

Re: Kernel Panic wlc_mac80211.c Line 6093

[Johannes Berg]

On Mon, 2011-01-24 at 13:08 +0000, Jamie Kitson wrote:
> >> This may not be supported by this driver.
> >
> > Ok, how would I find out for sure?
> 
> I got this from the irc channel:
> 
> [12:55] <johill> JamieKitson: it doesn't, at least arend said that a
> couple of days ago

Well, I was referring to what you quoted above :-)

johannes

Re: Kernel Panic wlc_mac80211.c Line 6093

[Jamie Kitson]

>> [12:55] <johill> JamieKitson: it doesn't, at least arend said that a
>> couple of days ago
>
> Well, I was referring to what you quoted above :-)
>
> johannes

Oh dear, I didn't make the connection :)

Re: Kernel Panic wlc_mac80211.c Line 6093

[Arend van Spriel]

Hi Jamie,

On Mon, 24 Jan 2011 13:45:47 +0100, Jamie Kitson <jamie@kitten-x.com>  
wrote:

>> Rereading the whole thread I noticed the PREEMPT in your uname message.  
>> Does
>> this mean you are running with CONFIG_PREEMPT (Preemptible Kernel)?
>
> Apparently so. I'm using the stock Arch kernel.
>
>> This may not be supported by this driver.
>
> Ok, how would I find out for sure?
>
Try a non-preemptible kernel? I will discuss it over here and get back  
with a definite response. Maybe it is a new candidate for our todo list.

Gr. AvS

-- 
Using Opera's revolutionary email client: http://www.opera.com/mail/

Re: Kernel Panic wlc_mac80211.c Line 6093

[Jamie Kitson]

Incidentally, and this is a bit anecdotal, but I don't seem to have
had a crash since I stopped booting with noapic. I will add noapic to
my boot options again and see if I can get a crash.

Jamie

Re: Kernel Panic wlc_mac80211.c Line 6093

[Arend van Spriel]

Ok,

On Mon, 24 Jan 2011 14:37:06 +0100, Jamie Kitson <jamie@kitten-x.com>  
wrote:

> Incidentally, and this is a bit anecdotal, but I don't seem to have
> had a crash since I stopped booting with noapic. I will add noapic to
> my boot options again and see if I can get a crash.
>
> Jamie
>
too quote a gremlin: feed me (with any debug experiences you may have).

Gr. AvS

-- 
Using Opera's revolutionary email client: http://www.opera.com/mail/

Re: Kernel Panic wlc_mac80211.c Line 6093

[Jamie Kitson]

> too quote a gremlin: feed me (with any debug experiences you may have).

Well for some reason when I got home today my machine crashed every
time it was bringing the wireless interface up until I disabled the
brcm80211 module, even without the noapic option. The crash looks a
little different:

http://farm6.static.flickr.com/5216/5385766744_632eb67670_b.jpg

Did you notice that someone on that Arch thread suggested that it
might be solved by using n mode only on the wireless router?

https://bbs.archlinux.org/viewtopic.php?pid=882237#p882237

Jamie

Re: Kernel Panic wlc_mac80211.c Line 6093

[Henry Ptasinski]

On Mon, Jan 24, 2011 at 01:47:37PM -0800, Jamie Kitson wrote:
> > too quote a gremlin: feed me (with any debug experiences you may have).
> 
> Well for some reason when I got home today my machine crashed every
> time it was bringing the wireless interface up until I disabled the
> brcm80211 module, even without the noapic option. The crash looks a
> little different:
> 
> http://farm6.static.flickr.com/5216/5385766744_632eb67670_b.jpg
> 
> Did you notice that someone on that Arch thread suggested that it
> might be solved by using n mode only on the wireless router?
> 
> https://bbs.archlinux.org/viewtopic.php?pid=882237#p882237

Thanks, a little more data to work with.

Roland has a lead on a locking issue that will hopefully resolve the MP
crashes.  However, it does look like there are a couple different issues, and
testing mixed vs. 11n-only networks may shed some more light on the other
issue.

- Henry

Re: Kernel Panic wlc_mac80211.c Line 6093

[Arend van Spriel]

Hi Jamie,

On Mon, 24 Jan 2011 22:40:35 +0100, Jamie Kitson <jamie@kitten-x.com>  
wrote:

>> Could you also provide the panic trace?
>
> How/where do I find that?
>
> Thanks, Jamie
>
I actually found some screenshots you posted on ArchLinux forum so if  
those are valid I am all set.

Gr. AvS

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