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Date: Thu, 30 Jul 2015 20:43:23 -0700 From: Pravin Shelar <pshelar@...ira.com> To: Joe Stringer <joestringer@...ira.com> Cc: netdev <netdev@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>, pablo@...filter.org, Patrick McHardy <kaber@...sh.net>, Justin Pettit <jpettit@...ira.com>, Andy Zhou <azhou@...ira.com>, Jesse Gross <jesse@...ira.com>, Florian Westphal <fwestpha@...hat.com>, Hannes Sowa <hannes@...hat.com>, Thomas Graf <tgraf@...ronetworks.com> Subject: Re: [PATCH net-next 1/9] openvswitch: Scrub packet in ovs_vport_receive() On Thu, Jul 30, 2015 at 11:12 AM, Joe Stringer <joestringer@...ira.com> wrote: > Signed-off-by: Joe Stringer <joestringer@...ira.com> > --- > net/openvswitch/vport.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c > index d14f594..baa018f 100644 > --- a/net/openvswitch/vport.c > +++ b/net/openvswitch/vport.c > @@ -475,6 +475,9 @@ void ovs_vport_receive(struct vport *vport, struct sk_buff *skb, > struct sw_flow_key key; > int error; > > + if (!skb->sk || (sock_net(skb->sk) != read_pnet(&vport->dp->net))) > + skb_scrub_packet(skb, true); > + skb scrub drops dst which cause use-after-free bug for flow based tunnel devices. > stats = this_cpu_ptr(vport->percpu_stats); > u64_stats_update_begin(&stats->syncp); > stats->rx_packets++; > -- > 2.1.4 > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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