linux-kernel - Re: Fwd: Possible bug in net/ipv4/route.c?

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Message-ID: <20100705132245.GA6876@gondor.apana.org.au>
Date:	Mon, 5 Jul 2010 21:22:45 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	yoshfuji@...ux-ipv6.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Stephen Hemminger <shemminger@...tta.com>
Subject: Re: Fwd: Possible bug in net/ipv4/route.c?

On Mon, Jul 05, 2010 at 02:59:14PM +0200, Eric Dumazet wrote:
>
> Why do we clear full 48 bytes skb->cb[] in skb_alloc(), if no protocol
> stack should rely it being zero ?

Unless a protocol is allocating the skb itself, then the fact
that skb_alloc clears skb->cb is no guarantee that the skb->cb
will be zero.

Thanks,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
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