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authorSteffen Klassert <steffen.klassert@secunet.com>2012-07-05 23:37:09 +0000
committerDavid S. Miller <davem@davemloft.net>2012-07-14 00:29:12 -0700
commit8104891b86b212de77063660c0c062b427526fa6 (patch)
treea90d026f1b2d43a368307880b967fa6ee45f64e5
parent921a678cb6825900478f1e8e9c59035f8c67aa32 (diff)
downloadlinux-8104891b86b212de77063660c0c062b427526fa6.tar.bz2
ipv6: Initialize the struct rt6_info behind the dst_enty field
We start initializing the struct rt6_info at the first field behind the struct dst_enty. This is error prone because it might leave a new field uninitialized. So start initializing the struct rt6_info right behind the dst_entry. Suggested-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/ipv6/route.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 3151aabff5fd..2a4c8d48977f 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -280,8 +280,9 @@ static inline struct rt6_info *ip6_dst_alloc(struct net *net,
0, 0, flags);
if (rt) {
- memset(&rt->n, 0,
- sizeof(*rt) - sizeof(struct dst_entry));
+ struct dst_entry *dst = &rt->dst;
+
+ memset(dst + 1, 0, sizeof(*rt) - sizeof(*dst));
rt6_init_peer(rt, table ? &table->tb6_peers : net->ipv6.peers);
}
return rt;
@@ -982,11 +983,11 @@ struct dst_entry *ip6_blackhole_route(struct net *net, struct dst_entry *dst_ori
rt = dst_alloc(&ip6_dst_blackhole_ops, ort->dst.dev, 1, 0, 0);
if (rt) {
- memset(&rt->rt6i_table, 0, sizeof(*rt) - sizeof(struct dst_entry));
- rt6_init_peer(rt, net->ipv6.peers);
-
new = &rt->dst;
+ memset(new + 1, 0, sizeof(*rt) - sizeof(*new));
+ rt6_init_peer(rt, net->ipv6.peers);
+
new->__use = 1;
new->input = dst_discard;
new->output = dst_discard;