netdev - Re: [BUG] 2.6.30-rc4: Kernel BUG under network load with gianfar

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Message-Id: <C6E445A9-0CE7-4270-848E-6FB34B3271D5@freescale.com>
Date:	Fri, 22 May 2009 12:18:22 -0500
From:	Andy Fleming <afleming@...escale.com>
To:	Michael Guntsche <mike@...loops.com>
Cc:	David Miller <davem@...emloft.net>, buytenh@...tstofly.org,
	linux-kernel@...r.kernel.org, "Rafael J. Wysocki" <rjw@...k.pl>,
	netdev@...r.kernel.org
Subject: Re: [BUG] 2.6.30-rc4: Kernel BUG under network load with gianfar


On May 22, 2009, at 9:27 AM, Michael Guntsche wrote:

>>>
>>> Something like the patch below would fix it.
>>
>> Let me know when a final, tested, version of this patch is available
>> and please make sure it makes it to netdev@...r.kernel.org
>
> I can confirm that Lennert's patch fixes my panic problems here.  
> After applying it, my connection has been rock solid and I no longer  
> get any kernel panics.
> That said, I think the final descision if this patch should go in  
> like it is now has to be made by Andy Fleming since he wrote the  
> initial code.

I'm working (admittedly fairly slowly) on a patch that resets the  
pointers so they don't get moved twice.  That way we can continue to  
benefit from recycling the error skbs.
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