ipv6: Do not depend on rt->n in ip6_dst_lookup_tail().
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -913,8 +913,12 @@ static int ip6_dst_lookup_tail(struct sock *sk,
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* dst entry of the nexthop router
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*/
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rt = (struct rt6_info *) *dst;
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n = rt->n;
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if (n && !(n->nud_state & NUD_VALID)) {
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rcu_read_lock_bh();
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n = __ipv6_neigh_lookup_noref(rt->dst.dev, rt6_nexthop(rt, &fl6->daddr));
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err = n && !(n->nud_state & NUD_VALID) ? -EINVAL : 0;
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rcu_read_unlock_bh();
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if (err) {
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struct inet6_ifaddr *ifp;
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struct flowi6 fl_gw6;
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int redirect;
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