[NETNS][DCCPV6]: Don't pass NULL to ip6_dst_lookup.
This call uses the sock to get the net to lookup the routing in. With CONFIG_NET_NS this code will OOPS, since the sk ptr is NULL. After looking inside the ip6_dst_lookup and drawing the analogy with respective ipv6 code, it seems, that the dccp ctl socket is a good candidate for the first argument. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -322,7 +322,7 @@ static void dccp_v6_ctl_send_reset(struct sock *sk, struct sk_buff *rxskb)
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security_skb_classify_flow(rxskb, &fl);
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/* sk = NULL, but it is safe for now. RST socket required. */
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if (!ip6_dst_lookup(NULL, &skb->dst, &fl)) {
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if (!ip6_dst_lookup(dccp_v6_ctl_sk, &skb->dst, &fl)) {
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if (xfrm_lookup(&skb->dst, &fl, NULL, 0) >= 0) {
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ip6_xmit(dccp_v6_ctl_sk, skb, &fl, NULL, 0);
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DCCP_INC_STATS_BH(DCCP_MIB_OUTSEGS);
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