netdev - Re: [RFC PATCH] bridge: netfilter: fix skb->nf_bridge NULL panic in br_nf_forward

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Message-ID: <4FFAA3CE.1090504@navynet.it>
Date:	Mon, 09 Jul 2012 11:26:38 +0200
From:	Massimo Cetra <ctrix+debianbugs@...ynet.it>
To:	Lin Ming <mlin@...pku.edu.cn>
CC:	Massimo Cetra <ctrix+debianbugs@...ynet.it>,
	Eric Dumazet <eric.dumazet@...il.com>, netdev@...r.kernel.org,
	Stephen Hemminger <shemminger@...tta.com>,
	"David S. Miller" <davem@...emloft.net>,
	Julian Anastasov <ja@....bg>
Subject: Re: [RFC PATCH] bridge: netfilter: fix skb->nf_bridge NULL panic
 in br_nf_forward_finish

On 06/07/2012 16:19, Lin Ming wrote:
> I can reproduce similiar panic with 3.5-rc5 kernel as Massimo reported at:
> http://marc.info/?l=linux-netdev&m=134089242113979&w=2
>
> The steps to reproduce as follow,
>
> 1. On Host1, setup brige br0(192.168.1.106)
> 2. Boot a kvm guest(192.168.1.105) on Host1 and start httpd
> 3. Start IPVS service on Host1
>     ipvsadm -A -t 192.168.1.106:80 -s rr
>     ipvsadm -a -t 192.168.1.106:80 -r 192.168.1.105:80 -m
> 4. Run apache benchmark on Host2(192.168.1.101)
>     ab -n 1000 http://192.168.1.106/

Thank you Lin,

i spent a couple of days trying to figure out how to reproduce but you 
were quicker and smarter than me.

Massimo


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