(adding back missing CC:)
On Mon, Jan 13, 2014 at 06:10:22PM +0200, Timo Teras wrote:
> On Mon, 13 Jan 2014 16:00:21 +0000
> Luis Henriques <luis.henriques@xxxxxxxxxxxxx> wrote:
>
> > 3.11.10.3 -stable review patch. If anyone has any objections, please
> > let me know.
>
> Does it build? Seems you have missed the hunk to the headers that
> implement skb_pop_mac_header().
Well, it does build because patch:
[PATCH 3.11 178/208] ipv6: fix illegal mac_header comparison on 32bit
actually added that hunk. This is a fix that is stable-specific (not in
mainline). Also, I've used David's stable patches for 3.10 as a base for
this patch.
Maybe this was a mistake as skb_pop_mac_header() doesn't seem to be
required by patch 178 in this serie...?
Cheers,
--
Luis
> >
> > ------------------
> >
> > From: =?UTF-8?q?Timo=20Ter=C3=A4s?= <timo.teras@xxxxxx>
> >
> > commit 0e3da5bb8da45890b1dc413404e0f978ab71173e upstream.
> >
> > ipgre_header_parse() needs to parse the tunnel's ip header and it
> > uses mac_header to locate the iphdr. This got broken when gre
> > tunneling was refactored as mac_header is no longer updated to point
> > to iphdr. Introduce skb_pop_mac_header() helper to do the mac_header
> > assignment and use it in ipgre_rcv() to fix msg_name parsing.
> >
> > Bug introduced in commit c54419321455 (GRE: Refactor GRE tunneling
> > code.)
> >
> > Cc: Pravin B Shelar <pshelar@xxxxxxxxxx>
> > Signed-off-by: Timo Teräs <timo.teras@xxxxxx>
> > Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
> > Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
> > ---
> > net/ipv4/ip_gre.c | 1 +
> > 1 file changed, 1 insertion(+)
> >
> > diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
> > index 8d6939e..2977400 100644
> > --- a/net/ipv4/ip_gre.c
> > +++ b/net/ipv4/ip_gre.c
> > @@ -217,6 +217,7 @@ static int ipgre_rcv(struct sk_buff *skb, const
> > struct tnl_ptk_info *tpi) iph->saddr, iph->daddr, tpi->key);
> >
> > if (tunnel) {
> > + skb_pop_mac_header(skb);
> > ip_tunnel_rcv(tunnel, skb, tpi, log_ecn_error);
> > return PACKET_RCVD;
> > }
>
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