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-rw-r--r--net/dccp/ipv4.c16
-rw-r--r--net/dccp/ipv6.c2
2 files changed, 11 insertions, 7 deletions
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index b92ab655d44e..cbbcc6c036e0 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -48,6 +48,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
struct flowi4 fl4;
struct rtable *rt;
int err;
+ struct ip_options_rcu *inet_opt;
dp->dccps_role = DCCP_ROLE_CLIENT;
@@ -58,10 +59,13 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -EAFNOSUPPORT;
nexthop = daddr = usin->sin_addr.s_addr;
- if (inet->opt != NULL && inet->opt->srr) {
+
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt != NULL && inet_opt->opt.srr) {
if (daddr == 0)
return -EINVAL;
- nexthop = inet->opt->faddr;
+ nexthop = inet_opt->opt.faddr;
}
orig_sport = inet->inet_sport;
@@ -78,7 +82,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -ENETUNREACH;
}
- if (inet->opt == NULL || !inet->opt->srr)
+ if (inet_opt == NULL || !inet_opt->opt.srr)
daddr = rt->rt_dst;
if (inet->inet_saddr == 0)
@@ -89,8 +93,8 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
inet->inet_daddr = daddr;
inet_csk(sk)->icsk_ext_hdr_len = 0;
- if (inet->opt != NULL)
- inet_csk(sk)->icsk_ext_hdr_len = inet->opt->optlen;
+ if (inet_opt)
+ inet_csk(sk)->icsk_ext_hdr_len = inet_opt->opt.optlen;
/*
* Socket identity is still unknown (sport may be zero).
* However we set state to DCCP_REQUESTING and not releasing socket
@@ -405,7 +409,7 @@ struct sock *dccp_v4_request_recv_sock(struct sock *sk, struct sk_buff *skb,
newinet->inet_daddr = ireq->rmt_addr;
newinet->inet_rcv_saddr = ireq->loc_addr;
newinet->inet_saddr = ireq->loc_addr;
- newinet->opt = ireq->opt;
+ newinet->inet_opt = ireq->opt;
ireq->opt = NULL;
newinet->mc_index = inet_iif(skb);
newinet->mc_ttl = ip_hdr(skb)->ttl;
diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
index 73add2373247..8dc4348774a5 100644
--- a/net/dccp/ipv6.c
+++ b/net/dccp/ipv6.c
@@ -573,7 +573,7 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
First: no IPv4 options.
*/
- newinet->opt = NULL;
+ newinet->inet_opt = NULL;
/* Clone RX bits */
newnp->rxopt.all = np->rxopt.all;

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