Commit 00ea1cee authored Feb 18, 2017 by Willem de Bruijn Committed by David S. Miller Feb 18, 2017

ipv6: release dst on error in ip6_dst_lookup_tail



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

Fixes: ec5e3b0a ("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>

parent 2763f92f

net/ipv6/ip6_output.c

+4 −2

Original line number	Original line	Diff line number	Diff line
	@@ -1022,8 +1022,10 @@ static int ip6_dst_lookup_tail(struct net net, const struct sock sk,
	}		}
	#endif		#endif
	if (ipv6_addr_v4mapped(&fl6->saddr) &&		if (ipv6_addr_v4mapped(&fl6->saddr) &&
	!(ipv6_addr_v4mapped(&fl6->daddr) \|\| ipv6_addr_any(&fl6->daddr)))		!(ipv6_addr_v4mapped(&fl6->daddr) \|\| ipv6_addr_any(&fl6->daddr))) {
	return -EAFNOSUPPORT;		err = -EAFNOSUPPORT;
			goto out_err_release;
			}

	return 0;		return 0;