[XFRM]: Always release dst_entry on error in xfrm_lookup
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index 157cec6..cc51840 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -175,10 +175,8 @@
if (final_p)
ipv6_addr_copy(&fl.fl6_dst, final_p);
- if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) {
- dst_release(dst);
+ if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0)
goto out;
- }
/* source address lookup done in ip6_dst_lookup */
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index 34e99c5..b7185fb 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -374,7 +374,7 @@
if (err)
goto out;
if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0)
- goto out_dst_release;
+ goto out;
if (ipv6_addr_is_multicast(&fl.fl6_dst))
hlimit = np->mcast_hops;
@@ -469,7 +469,7 @@
if (err)
goto out;
if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0)
- goto out_dst_release;
+ goto out;
if (ipv6_addr_is_multicast(&fl.fl6_dst))
hlimit = np->mcast_hops;
@@ -505,7 +505,6 @@
out_put:
if (likely(idev != NULL))
in6_dev_put(idev);
-out_dst_release:
dst_release(dst);
out:
icmpv6_xmit_unlock();
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index a7eae30..555a313 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -447,10 +447,8 @@
return;
err = xfrm_lookup(&dst, &fl, NULL, 0);
- if (err < 0) {
- dst_release(dst);
+ if (err < 0)
return;
- }
if (inc_opt) {
if (dev->addr_len)
@@ -539,10 +537,8 @@
return;
err = xfrm_lookup(&dst, &fl, NULL, 0);
- if (err < 0) {
- dst_release(dst);
+ if (err < 0)
return;
- }
len = sizeof(struct icmp6hdr) + sizeof(struct in6_addr);
send_llinfo = dev->addr_len && !ipv6_addr_any(saddr);
@@ -616,10 +612,8 @@
return;
err = xfrm_lookup(&dst, &fl, NULL, 0);
- if (err < 0) {
- dst_release(dst);
+ if (err < 0)
return;
- }
len = sizeof(struct icmp6hdr);
if (dev->addr_len)
@@ -1353,10 +1347,8 @@
return;
err = xfrm_lookup(&dst, &fl, NULL, 0);
- if (err) {
- dst_release(dst);
+ if (err)
return;
- }
rt = (struct rt6_info *) dst;
diff --git a/net/ipv6/netfilter/ip6t_REJECT.c b/net/ipv6/netfilter/ip6t_REJECT.c
index 14316c3..b03e87a 100644
--- a/net/ipv6/netfilter/ip6t_REJECT.c
+++ b/net/ipv6/netfilter/ip6t_REJECT.c
@@ -100,11 +100,8 @@
dst = ip6_route_output(NULL, &fl);
if (dst == NULL)
return;
- if (dst->error ||
- xfrm_lookup(&dst, &fl, NULL, 0)) {
- dst_release(dst);
+ if (dst->error || xfrm_lookup(&dst, &fl, NULL, 0))
return;
- }
hh_len = (dst->dev->hard_header_len + 15)&~15;
nskb = alloc_skb(hh_len + 15 + dst->header_len + sizeof(struct ipv6hdr)
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 2ad3789..5aa3691 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -782,10 +782,8 @@
if (final_p)
ipv6_addr_copy(&fl.fl6_dst, final_p);
- if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) {
- dst_release(dst);
+ if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0)
goto out;
- }
if (hlimit < 0) {
if (ipv6_addr_is_multicast(&fl.fl6_dst))
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 246414b..80643e6 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -632,10 +632,8 @@
if (final_p)
ipv6_addr_copy(&fl.fl6_dst, final_p);
- if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) {
- dst_release(dst);
+ if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0)
goto failure;
- }
if (saddr == NULL) {
saddr = &fl.fl6_src;
@@ -888,7 +886,6 @@
}
done:
- dst_release(dst);
if (opt && opt != np->opt)
sock_kfree_s(sk, opt, opt->tot_len);
return err;
@@ -1000,10 +997,8 @@
/* sk = NULL, but it is safe for now. RST socket required. */
if (!ip6_dst_lookup(NULL, &buff->dst, &fl)) {
- if ((xfrm_lookup(&buff->dst, &fl, NULL, 0)) < 0) {
- dst_release(buff->dst);
+ if ((xfrm_lookup(&buff->dst, &fl, NULL, 0)) < 0)
return;
- }
ip6_xmit(NULL, buff, &fl, NULL, 0);
TCP_INC_STATS_BH(TCP_MIB_OUTSEGS);
@@ -1067,10 +1062,8 @@
fl.fl_ip_sport = t1->source;
if (!ip6_dst_lookup(NULL, &buff->dst, &fl)) {
- if ((xfrm_lookup(&buff->dst, &fl, NULL, 0)) < 0) {
- dst_release(buff->dst);
+ if ((xfrm_lookup(&buff->dst, &fl, NULL, 0)) < 0)
return;
- }
ip6_xmit(NULL, buff, &fl, NULL, 0);
TCP_INC_STATS_BH(TCP_MIB_OUTSEGS);
return;
@@ -1733,7 +1726,6 @@
if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) {
sk->sk_err_soft = -err;
- dst_release(dst);
return err;
}
@@ -1786,7 +1778,6 @@
if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) {
sk->sk_route_caps = 0;
- dst_release(dst);
return err;
}
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index f5ae148..69b1468 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -799,10 +799,8 @@
if (final_p)
ipv6_addr_copy(&fl->fl6_dst, final_p);
- if ((err = xfrm_lookup(&dst, fl, sk, 0)) < 0) {
- dst_release(dst);
+ if ((err = xfrm_lookup(&dst, fl, sk, 0)) < 0)
goto out;
- }
if (hlimit < 0) {
if (ipv6_addr_is_multicast(&fl->fl6_dst))