Date: Sat, 23 Jan 2010 20:53:31 -0500
From: Michael Breuer <mbreuer@majjas.com>
Subject: Re: Hang: 2.6.32.4 sky2/DMAR (was [PATCH] sky2: Fix WARNING: at
 lib/dma-debug.c:902 check_sync)
In-reply-to: <20100123232133.GA3487@del.dom.local>
To: Jarek Poplawski <jarkao2@gmail.com>
Cc: David Miller <davem@davemloft.net>,
       Stephen Hemminger <shemminger@linux-foundation.org>,
       akpm@linux-foundation.org, flyboy@gmail.com,
       linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
       Michael Chan <mchan@broadcom.com>, Don Fry <pcnet32@verizon.net>,
       Francois Romieu <romieu@fr.zoreil.com>,
       Matt Carlson <mcarlson@broadcom.com>
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On 1/23/2010 6:21 PM, Jarek Poplawski wrote:
> On Fri, Jan 22, 2010 at 06:50:21PM -0500, Michael Breuer wrote:
>    
>> When the packets were dropped, there was a different sequence in the
>> log - DISCOVER/OFFER repeated. The "normal" is that the sequence
>> appeared correct and complete - DISCOVER/OFFER/REQUEST/ACK - or
>> INFORM/ACK (vs. INFORM repeatedly sans ACK) as the case may be.
>>      
> Anyway, I'd be intersted if the switch matters here.
>
> Plus one more test: could you try to load sky2 with the parameter:
> "copybreak=1" (the rest as in any recent test, which gave you dmar
> errors; any switch).
>
> Thanks,
> Jarek P.
>    
Ok - will try with and without the copybreak=1 after I'm done bisecting 
2.6.33 rc5 for something unrelated (it'll take a couple of days for each 
unless a crash occurs in less that 48 hours).
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