netdev - Re: Kernel panic when using bridge

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Message-ID: <20110412164557.GF2047@stratus.com>
Date:	Tue, 12 Apr 2011 12:45:57 -0400
From:	Bandan Das <bandan.das@...atus.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Stephen Hemminger <shemminger@...tta.com>,
	Jan Lübbe <jluebbe@...ian.org>,
	Scot Doyle <lkml@...tdoyle.com>,
	Hiroaki SHIMODA <shimoda.hiroaki@...il.com>,
	netdev@...r.kernel.org, Bandan Das <bandan.das@...atus.com>
Subject: Re: Kernel panic when using bridge

On  0, Eric Dumazet <eric.dumazet@...il.com> wrote:
> Le mardi 12 avril 2011 à 09:20 -0700, Stephen Hemminger a écrit :
> 
> > I think the confusion is that IPCB(skb) is not the IP header but
> > scratch space used during IP header processing. Before the sanitize
> > patch the CB was cleared.
> > 
> > Acked-by: Stephen Hemminger <shemminger@...tta.com>
> 
> Should we clear it also in br_nf_dev_queue_xmit(), since we did this
> prior to commit 462fb2af9788a8 ?
> 
> Thanks !
> 
Wouldn't that clear out any valid IP options if it were there ? I think
that was the whole point of adding br_parse_ip_options :

/* BUG: Should really parse the IP options here. */
memset(IPCB(skb), 0, sizeof(struct inet_skb_parm));

 

-- 
Bandan 
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