From b1afce9538eef6239798ec54cead3c39d69724ca Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Tue, 4 Dec 2012 14:46:34 -0500 Subject: [PATCH] ipv6: Protect ->mc_forwarding access with CONFIG_IPV6_MROUTE Reported-by: Fengguang Wu Signed-off-by: David S. Miller --- net/ipv6/addrconf.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 28e0e627229c..6fca01f136ad 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -469,8 +469,10 @@ static int inet6_netconf_msgsize_devconf(int type) /* type -1 is used for ALL */ if (type == -1 || type == NETCONFA_FORWARDING) size += nla_total_size(4); +#ifdef CONFIG_IPV6_MROUTE if (type == -1 || type == NETCONFA_MC_FORWARDING) size += nla_total_size(4); +#endif return size; } @@ -498,11 +500,12 @@ static int inet6_netconf_fill_devconf(struct sk_buff *skb, int ifindex, if ((type == -1 || type == NETCONFA_FORWARDING) && nla_put_s32(skb, NETCONFA_FORWARDING, devconf->forwarding) < 0) goto nla_put_failure; +#ifdef CONFIG_IPV6_MROUTE if ((type == -1 || type == NETCONFA_MC_FORWARDING) && nla_put_s32(skb, NETCONFA_MC_FORWARDING, devconf->mc_forwarding) < 0) goto nla_put_failure; - +#endif return nlmsg_end(skb, nlh); nla_put_failure: -- 2.20.1