Date: Fri, 25 Dec 2009 22:23:51 -0500
From: Michael Breuer <mbreuer@majjas.com>
Subject: Re: sky2 panic in 2.6.32.1 under load (new oops)
In-reply-to: <20091225152200.1cf11dfe@nehalam>
To: Stephen Hemminger <shemminger@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
       "Berck E. Nash" <flyboy@gmail.com>,
       "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
       netdev@vger.kernel.org
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On 12/25/2009 6:22 PM, Stephen Hemminger wrote:
> On Fri, 25 Dec 2009 11:28:55 -0500
> Michael Breuer<mbreuer@majjas.com>  wrote:
>
>    
>>    More data points - I'm able to reliably recreate this now.
>> While I thought it was coincidence, each and every time I hit this issue
>> there is a DHCP renew event immediately before the first error.
>> The crash occurs while under load - in my case seems that the traffic is
>> actually IPV6 (hadn't noticed that before).
>> I ran nethogs on a remote display - the reported rx rate on the IPV6 smb
>> connection at the time of the lockup was 33889.688 KB/sec on a 1gbit
>> nic. I've got two events like this - don't recall if the earlier one was
>> the exact same # - but it was in the ballpark.
>>
>> On 12/24/2009 2:01 AM, Andrew Morton wrote:
>>      
>>> cc's added again.
>>>
>>> On Wed, 23 Dec 2009 17:54:27 -0500 Michael Breuer<mbreuer@majjas.com>   wrote:
>>>
>>>
>>>        
>>>> Ok - not the firmware.  Ran another Windows backup and sky2 went down.
>>>>
>>>> Nothing in dmesg.old - have oops in syslog. System became unresponsive
>>>> and watchdog kicked in after a minute.
>>>>
>>>> Also note that I have a similar oops with VT-D disabled (posted here on
>>>> 12/5). I'm attaching the oops from that below this oops for comparison.
>>>> That also happened under similar load.
>>>>
>>>> On the assumption that I can recreate this (although it takes a while)
>>>> please let me know how I can help.
>>>>
>>>> What's in my log (starting with an smbd error about 2 min before the
>>>> oops (note: the dchpd is not the system doing the backup).
>>>>
>>>>          
>>> This (nastily wordwrapped) oops appers to be quite different from
>>> Berck's one.
>>>
>>>
>>>        
> What is the MTU?
>    
1500
>>      
>
>    

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