netdev - Re: ipqueue allocation failure.

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Message-ID: <4DB049B5.4070705@trash.net>
Date:	Thu, 21 Apr 2011 17:13:57 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Dave Jones <davej@...hat.com>
CC:	netdev@...r.kernel.org
Subject: Re: ipqueue allocation failure.

Am 20.04.2011 03:42, schrieb Dave Jones:
> Not catastrophic, but ipqueue seems to be too trusting of what it gets
> passed from userspace, and passes it on down to the page allocator,
> where it will spew warnings if the page order is too high.
> 
> __ipq_rcv_skb has several checks for lengths too small, but doesn't
> seem to have any for oversized ones.   I'm not sure what the maximum
> we should check for is. I'll code up a diff if anyone has any ideas
> on a sane maximum.

A sane maximum seems to be 2^16 - 1, the maximum size of an IPv4 packet.
Please also update ip6queue and nfnetlink_queue.
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