From mboxrd@z Thu Jan  1 00:00:00 1970
From: Bruno =?UTF-8?B?UHLDqW1vbnQ=?= <bonbons@linux-vserver.org>
Subject: Re: [2.6.33-rc5 regression] NULL pointer dereference in
 vlan_skb_recv - probably introduced by commit
 9793241fe92f7d9303fb221e43fc598eb065f267
Date: Sun, 24 Jan 2010 20:18:08 +0100
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Cc: =?UTF-8?B?QW3DqXJpY28=?= Wang <xiyou.wangcong@gmail.com>,
	"David S. Miller" <davem@davemloft.net>, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org
To: Eric Dumazet <eric.dumazet@gmail.com>
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Yep, works fine and RX stats look right as well.

So
Reported-By: Bruno Pr=C3=A9mont <bonbons@linux-vserver.org>
Tested-By: Bruno Pr=C3=A9mont <bonbons@linux-vserver.org>

Thanks,
Bruno


On Sun, 24 January 2010 Eric Dumazet <eric.dumazet@gmail.com> wrote:
> Ok, I believe I found the problem :)
>=20
> Please try following patch, if it works I'll submit with appropriate
> Changelog and signatures
>=20
> Thanks
>=20
>=20
> diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
> index b788978..c1b92ca 100644
> --- a/net/8021q/vlan_dev.c
> +++ b/net/8021q/vlan_dev.c
> @@ -163,7 +163,7 @@ int vlan_skb_recv(struct sk_buff *skb, struct net=
_device *dev,
>               goto err_unlock;
>  	}
> =20
> -	rx_stats =3D per_cpu_ptr(vlan_dev_info(dev)->vlan_rx_stats,
> +	rx_stats =3D per_cpu_ptr(vlan_dev_info(skb->dev)->vlan_rx_stats,
>                              smp_processor_id());
>       rx_stats->rx_packets++;
>  	rx_stats->rx_bytes +=3D skb->len;