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Date:	Fri, 17 Oct 2014 12:48:05 -0700
From:	Eric Dumazet <>
To:	David Miller <>
Subject: Re: something is wrong in commit 971f10eca1 - tcp: better
 TCP_SKB_CB layout to reduce cache line misses

On Fri, 2014-10-17 at 15:29 -0400, David Miller wrote:
> So I applied Cong's patches, but if I am to understand the testing feedback
> so far only the 64-bit case of the reporter's problems is fixed, and that
> the 32-bit graphics corruption still happens.
> Can I get some clarification of where we stand after Cong's fixes
> which are already merged into 'net'?

I spent some time on the (awful) memmove() implementation on x86_32, and
could not find a bug in it.

It would be worth trying doing 2 memcpy() instead just in case...

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