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Date:	Thu, 25 Jan 2007 13:34:25 -0800 (PST)
From:	David Miller <>
Subject: Re: [PATCH] Fix sorting of SACK blocks

From: Baruch Even <>
Date: Thu, 25 Jan 2007 20:29:03 +0200

> The sorting of SACK blocks actually munges them rather than sort, causing the
> TCP stack to ignore some SACK information and breaking the assumption of
> ordered SACK blocks after sorting.
> The sort takes the data from a second buffer which isn't moved causing
> subsequent data moves to occur from the wrong location. The fix is to
> use a temporary buffer as a normal sort does.
> Signed-Off-By: Baruch Even <>

Thanks for finding this bug Baruch.

It probably explains some weird TCP traces I've seen over
the years :-)

I'll review this and apply it later today, thanks again.
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