net/ipv4: ip_vti clear skb cb before tunneling.
If users apply shaper to vti tunnel then it will cause a kernel crash. The
problem seems to be due to the vti_tunnel_xmit function not clearing
skb->opt field before passing the packet to xfrm tunneling code.
Signed-off-by: Saurabh Mohan <saurabh@vyatta.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/ip_vti.c b/net/ipv4/ip_vti.c
index 9d2bdb2..c118f6b 100644
--- a/net/ipv4/ip_vti.c
+++ b/net/ipv4/ip_vti.c
@@ -361,8 +361,7 @@
tunnel->err_count = 0;
}
- IPCB(skb)->flags &= ~(IPSKB_XFRM_TUNNEL_SIZE | IPSKB_XFRM_TRANSFORMED |
- IPSKB_REROUTED);
+ memset(IPCB(skb), 0, sizeof(*IPCB(skb)));
skb_dst_drop(skb);
skb_dst_set(skb, &rt->dst);
nf_reset(skb);