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| author | YOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@linux-ipv6.org> | 2013-01-17 12:53:55 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-01-17 18:38:19 -0500 |
| commit | 707be1ff3d9309f810e33790e6ae3f15e7ac967e (patch) | |
| tree | 5a806574dfa38cdbe48cfff6bd549ac02c50d614 /net | |
| parent | 9bb5a14813f502b867a45075c88bc1f2b78381df (diff) | |
| download | linux-707be1ff3d9309f810e33790e6ae3f15e7ac967e.tar.gz linux-707be1ff3d9309f810e33790e6ae3f15e7ac967e.tar.bz2 linux-707be1ff3d9309f810e33790e6ae3f15e7ac967e.zip | |
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>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv6/ip6_output.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 9250c696de9d..7c00edb343a0 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -913,8 +913,12 @@ static int ip6_dst_lookup_tail(struct sock *sk, * dst entry of the nexthop router */ rt = (struct rt6_info *) *dst; - n = rt->n; - if (n && !(n->nud_state & NUD_VALID)) { + rcu_read_lock_bh(); + n = __ipv6_neigh_lookup_noref(rt->dst.dev, rt6_nexthop(rt, &fl6->daddr)); + err = n && !(n->nud_state & NUD_VALID) ? -EINVAL : 0; + rcu_read_unlock_bh(); + + if (err) { struct inet6_ifaddr *ifp; struct flowi6 fl_gw6; int redirect; |