3 files changed, 14 insertions, 12 deletions
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index a027003d69a..a4402de425d 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -269,7 +269,7 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl,
 	skb->mark = sk->sk_mark;
 
 	mtu = dst_mtu(dst);
-	if ((skb->len <= mtu) || ipfragok || skb_is_gso(skb)) {
+	if ((skb->len <= mtu) || skb->local_df || skb_is_gso(skb)) {
 		IP6_INC_STATS(ip6_dst_idev(skb->dst),
 			      IPSTATS_MIB_OUTREQUESTS);
 		return NF_HOOK(PF_INET6, NF_INET_LOCAL_OUT, skb, NULL, dst->dev,
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index ea33b26512c..741cfcd96f8 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -346,6 +346,8 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
 		 */
 		if (optlen == 0)
 			optval = NULL;
+		else if (optval == NULL)
+			goto e_inval;
 		else if (optlen < sizeof(struct ipv6_opt_hdr) ||
 			 optlen & 0x7 || optlen > 8 * 255)
 			goto e_inval;
diff --git a/net/ipv6/syncookies.c b/net/ipv6/syncookies.c
index a46badd1082..ec394cf5a19 100644
--- a/net/ipv6/syncookies.c
+++ b/net/ipv6/syncookies.c
@@ -199,10 +199,8 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb)
 	ireq6 = inet6_rsk(req);
 	treq = tcp_rsk(req);
 
-	if (security_inet_conn_request(sk, skb, req)) {
-		reqsk_free(req);
-		goto out;
-	}
+	if (security_inet_conn_request(sk, skb, req))
+		goto out_free;
 
 	req->mss = mss;
 	ireq->rmt_port = th->source;
@@ -255,14 +253,13 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb)
 		fl.fl_ip_dport = inet_rsk(req)->rmt_port;
 		fl.fl_ip_sport = inet_sk(sk)->sport;
 		security_req_classify_flow(req, &fl);
-		if (ip6_dst_lookup(sk, &dst, &fl)) {
-			reqsk_free(req);
-			goto out;
-		}
+		if (ip6_dst_lookup(sk, &dst, &fl))
+			goto out_free;
+
 		if (final_p)
 			ipv6_addr_copy(&fl.fl6_dst, final_p);
 		if ((xfrm_lookup(&dst, &fl, sk, 0)) < 0)
-			goto out;
+			goto out_free;
 	}
 
 	req->window_clamp = tp->window_clamp ? :dst_metric(dst, RTAX_WINDOW);
@@ -273,7 +270,10 @@ struct sock *cookie_v6_check(struct sock *sk, struct sk_buff *skb)
 	ireq->rcv_wscale = rcv_wscale;
 
 	ret = get_cookie_sock(sk, skb, req, dst);
-
-out:	return ret;
+out:
+	return ret;
+out_free:
+	reqsk_free(req);
+	return NULL;
 }