kernel bug relating to networking

kernel bug relating to networking

[James]

I originally posted to linux-net@vger.kernel.org but all that list
received in the last day was 3 Russian (spam?) messages.
I'm hoping here will be less spam.

I'm having a wireless problem that I think is kernel issue.
kernel-2.6.36.4 is good but recent kernels are bad.
CompatWireless (recent wireless code) works on kernel-2.6.36.4 so I
don't think it is the wireless subsystem..

I have a Network controller: Atheros Communications Inc. AR5008 Wireless
Network Adapter (rev 01).

"iwlist wlan0 scan | grep SSID" under kernel-2.6.36.4 returns  ~15 APs
and associates to my AP.
Recent kernels are bad and return ~0-3 APs and do not associate to my AP.

I need help to debug this.

I think the scans fail whenever dmesg shows this:
> ath: Failed to stop TX DMA in 100 msec after killing last frame
> ath: Failed to stop TX DMA!
It seems to be 100% if I boot a kernel and that message is there, it'll
be a bad kernel.

I tried:
$ git clone
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-2.6.37.y.git
$ cd linux-2.6.37.y
# git tag
What tag is 2.6.36.4?

v2.6.36
v2.6.36-rc1
v2.6.36-rc2
v2.6.36-rc3
v2.6.36-rc4
v2.6.36-rc5
v2.6.36-rc6
v2.6.36-rc7
v2.6.36-rc8
v2.6.37
v2.6.37-rc1
v2.6.37-rc2
v2.6.37-rc3
v2.6.37-rc4
v2.6.37-rc5
v2.6.37-rc6
v2.6.37-rc7
v2.6.37-rc8
v2.6.37.1
v2.6.37.2
v2.6.37.3
v2.6.37.4
v2.6.37.5
v2.6.37.6

Is the next step to do:
$ git bisect start
$ git bisect good v2.6.36.4
$ git bisect bad v2.6.37.6

Re: kernel bug relating to networking

[Daniel Baluta]

On Mon, May 16, 2011 at 6:35 PM, James <bjlockie@lockie.ca> wrote:
> I originally posted to linux-net@vger.kernel.org but all that list

This should be netdev@vger.kernel.org.

> received in the last day was 3 Russian (spam?) messages.
> I'm hoping here will be less spam.
>
> I'm having a wireless problem that I think is kernel issue.
> kernel-2.6.36.4 is good but recent kernels are bad.
> CompatWireless (recent wireless code) works on kernel-2.6.36.4 so I
> don't think it is the wireless subsystem..
>
> I have a Network controller: Atheros Communications Inc. AR5008 Wireless
> Network Adapter (rev 01).
>
> "iwlist wlan0 scan | grep SSID" under kernel-2.6.36.4 returns  ~15 APs
> and associates to my AP.
> Recent kernels are bad and return ~0-3 APs and do not associate to my AP.
>
> I need help to debug this.
>
> I think the scans fail whenever dmesg shows this:
>> ath: Failed to stop TX DMA in 100 msec after killing last frame
>> ath: Failed to stop TX DMA!
> It seems to be 100% if I boot a kernel and that message is there, it'll
> be a bad kernel.
>
> I tried:
> $ git clone
> git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-2.6.37.y.git
> $ cd linux-2.6.37.y
> # git tag
> What tag is 2.6.36.4?
>
> v2.6.36
> v2.6.36-rc1
> v2.6.36-rc2
> v2.6.36-rc3
> v2.6.36-rc4
> v2.6.36-rc5
> v2.6.36-rc6
> v2.6.36-rc7
> v2.6.36-rc8
> v2.6.37
> v2.6.37-rc1
> v2.6.37-rc2
> v2.6.37-rc3
> v2.6.37-rc4
> v2.6.37-rc5
> v2.6.37-rc6
> v2.6.37-rc7
> v2.6.37-rc8
> v2.6.37.1
> v2.6.37.2
> v2.6.37.3
> v2.6.37.4
> v2.6.37.5
> v2.6.37.6
>
> Is the next step to do:
> $ git bisect start
> $ git bisect good v2.6.36.4
> $ git bisect bad v2.6.37.6
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/
>

Re: kernel bug relating to networking

[James]

On 05/16/11 11:47, Daniel Baluta wrote:
> On Mon, May 16, 2011 at 6:35 PM, James <bjlockie@lockie.ca> wrote:
>> I originally posted to linux-net@vger.kernel.org but all that list
> This should be netdev@vger.kernel.org.
That is confusing since the welcome message said: "welcome message for
linux-net@vger.kernel.org".

Both lists are listed at http://vger.kernel.org/vger-lists.html but it
doesn't say the difference.

Re: kernel bug relating to networking

[Ben Hutchings]

On Mon, 2011-05-16 at 16:47 -0400, James wrote:
> On 05/16/11 11:47, Daniel Baluta wrote:
> > On Mon, May 16, 2011 at 6:35 PM, James <bjlockie@lockie.ca> wrote:
> >> I originally posted to linux-net@vger.kernel.org but all that list
> > This should be netdev@vger.kernel.org.
> That is confusing since the welcome message said: "welcome message for
> linux-net@vger.kernel.org".
> 
> Both lists are listed at http://vger.kernel.org/vger-lists.html but it
> doesn't say the difference.

linux-net: spam and unanswered questions
netdev: actual discussions

David, is it not time to stop the confusion by shutting down linux-net?

Ben.

-- 
Ben Hutchings, Senior Software Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

Re: kernel bug relating to networking

[David Miller]

From: Ben Hutchings <bhutchings@solarflare.com>
Date: Mon, 16 May 2011 22:20:25 +0100

> On Mon, 2011-05-16 at 16:47 -0400, James wrote:
>> On 05/16/11 11:47, Daniel Baluta wrote:
>> > On Mon, May 16, 2011 at 6:35 PM, James <bjlockie@lockie.ca> wrote:
>> >> I originally posted to linux-net@vger.kernel.org but all that list
>> > This should be netdev@vger.kernel.org.
>> That is confusing since the welcome message said: "welcome message for
>> linux-net@vger.kernel.org".
>> 
>> Both lists are listed at http://vger.kernel.org/vger-lists.html but it
>> doesn't say the difference.
> 
> linux-net: spam and unanswered questions
> netdev: actual discussions
> 
> David, is it not time to stop the confusion by shutting down linux-net?

Agreed, linux-net has been deleted.