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ipv6: release dst on error in ip6_dst_lookup_tail

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If ip6_dst_lookup_tail has acquired a dst and fails the IPv4-mapped
check, release the dst before returning an error.

Fixes: ec5e3b0a1d ("ipv6: Inhibit IPv4-mapped src address on the wire.")
Signed-off-by: Willem de Bruijn <willemb@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Willem de Bruijn 2017-02-18 19:00:45 -05:00 committed by David S. Miller
parent 2763f92f85
commit 00ea1ceebe
1 changed files with 4 additions and 2 deletions
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6
net/ipv6/ip6_output.c
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@ -1022,8 +1022,10 @@ static int ip6_dst_lookup_tail(struct net *net, const struct sock *sk,
}
#endif
if (ipv6_addr_v4mapped(&fl6->saddr) &&
!(ipv6_addr_v4mapped(&fl6->daddr) || ipv6_addr_any(&fl6->daddr)))
return -EAFNOSUPPORT;
!(ipv6_addr_v4mapped(&fl6->daddr) || ipv6_addr_any(&fl6->daddr))) {
err = -EAFNOSUPPORT;
goto out_err_release;
}
return 0;