netdev - Re: [PATCH] net: Convert skb->csum_(start|offset) integrity BUG_ON() to WARN

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Message-Id: <20130214.130011.1650629621355208039.davem@davemloft.net>
Date:	Thu, 14 Feb 2013 13:00:11 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	tgraf@...g.ch
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH] net: Convert skb->csum_(start|offset) integrity
 BUG_ON() to WARN_ON() & drop

From: Thomas Graf <tgraf@...g.ch>
Date: Thu, 14 Feb 2013 10:18:53 +0000

> On 02/13/13 at 07:37pm, David Miller wrote:
> Maybe it's my general dislike of BUG_ON() in the processing
> path, especially if the bug condition can be influenced remotely.
> It looks absolutely doable to trigger the previously mentioned
> partial acking & collapsing on purpose by a malicious receiver
> even with an MTU of 1500. I believe we should avoid total DoS
> in future similar situations that we don't think of yet.

I heard that people can very effectively protect themselves from DoS's
by not using Infiniband. :-)

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