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Date: Tue, 6 Aug 2002 01:45:54 +0200
To: kuznet@ms2.inr.ac.ru
Cc: davem@redhat.com, linux-kernel@vger.kernel.org
Subject: Re: Fragment flooding in 2.4.x/2.5.x
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From: Trond Myklebust <trond.myklebust@fys.uio.no>
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>>>>> " " == kuznet  <kuznet@ms2.inr.ac.ru> writes:

     > Hello!
    >> the bug has already been known to crash a few servers...

     > Sorry? What crash do you speak about?

You'll find it documented on RedHat's Bugzilla (can't remember the
exact reference - sorry). Basically the first RH-7.3 kernels were
causing a DOS on a couple of Netapps w/ Gigabit connections.

The DOS was traced to a combination of Linux flooding the server with
all these fragments w/o headers (our bug), coupled with inadequate
garbage collection of said fragments on the Netapp side (their bug).

Cheers,
  Trond
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