linux-kernel - Re: PROBLEM: System call 'sendmsg' of process ospfd (quagga) causes kernel oops

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Message-ID: <20111018134537.GA17055@gondor.apana.org.au>
Date:	Tue, 18 Oct 2011 15:45:37 +0200
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Elmar Vonlanthen <evonlanthen@...il.com>,
	linux-kernel@...r.kernel.org, netdev <netdev@...r.kernel.org>,
	Timo Teräs <timo.teras@....fi>
Subject: Re: PROBLEM: System call 'sendmsg' of process ospfd (quagga)
	causes kernel oops

On Tue, Oct 18, 2011 at 02:56:00PM +0200, Eric Dumazet wrote:
>
> I am ok by this way, but we might hit another similar problem elsewhere.
> 
> (igmp.c ip6_output, ...)
> 
> We effectively want to remove LL_ALLOCATED_SPACE() usage and obfuscate
> code...

Here's another idea, provide a helper to do the skb allocation
and the skb_reserve in one go.  That way this ugliness would only
need to be done once.

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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