8 files changed, 31 insertions, 18 deletions
diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index e3abfc97f..d847ffbe9 100644
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -241,10 +241,9 @@ int esp6_output_head(struct xfrm_state *x, struct sk_buff *skb, struct esp_info
 	struct page *page;
 	struct sk_buff *trailer;
 	int tailen = esp->tailen;
-	unsigned int allocsz;
 
-	allocsz = ALIGN(skb->data_len + tailen, L1_CACHE_BYTES);
-	if (allocsz > ESP_SKB_FRAG_MAXSIZE)
+	if (ALIGN(tailen, L1_CACHE_BYTES) > PAGE_SIZE ||
+	    ALIGN(skb->data_len, L1_CACHE_BYTES) > PAGE_SIZE)
 		goto cow;
 
 	if (!skb_cloned(skb)) {
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index 4fd6c0929..e617a98f4 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -946,7 +946,6 @@ static netdev_tx_t ip6erspan_tunnel_xmit(struct sk_buff *skb,
 	__be16 proto;
 	__u32 mtu;
 	int nhoff;
-	int thoff;
 
 	if (!pskb_inet_may_pull(skb))
 		goto tx_err;
@@ -967,10 +966,16 @@ static netdev_tx_t ip6erspan_tunnel_xmit(struct sk_buff *skb,
 	    (ntohs(ip_hdr(skb)->tot_len) > skb->len - nhoff))
 		truncate = true;
 
-	thoff = skb_transport_header(skb) - skb_mac_header(skb);
-	if (skb->protocol == htons(ETH_P_IPV6) &&
-	    (ntohs(ipv6_hdr(skb)->payload_len) > skb->len - thoff))
-		truncate = true;
+	if (skb->protocol == htons(ETH_P_IPV6)) {
+		int thoff;
+
+		if (skb_transport_header_was_set(skb))
+			thoff = skb_transport_header(skb) - skb_mac_header(skb);
+		else
+			thoff = nhoff + sizeof(struct ipv6hdr);
+		if (ntohs(ipv6_hdr(skb)->payload_len) > skb->len - thoff)
+			truncate = true;
+	}
 
 	if (skb_cow_head(skb, dev->needed_headroom ?: t->hlen))
 		goto tx_err;
diff --git a/net/ipv6/ping.c b/net/ipv6/ping.c
index 5c9be8594..23ae01715 100644
--- a/net/ipv6/ping.c
+++ b/net/ipv6/ping.c
@@ -27,6 +27,11 @@
 #include <linux/proc_fs.h>
 #include <net/ping.h>
 
+static void ping_v6_destroy(struct sock *sk)
+{
+	inet6_destroy_sock(sk);
+}
+
 /* Compatibility glue so we can support IPv6 when it's compiled as a module */
 static int dummy_ipv6_recv_error(struct sock *sk, struct msghdr *msg, int len,
 				 int *addr_len)
@@ -170,6 +175,7 @@ struct proto pingv6_prot = {
 	.owner =	THIS_MODULE,
 	.init =		ping_init_sock,
 	.close =	ping_close,
+	.destroy =	ping_v6_destroy,
 	.connect =	ip6_datagram_connect_v6_only,
 	.disconnect =	__udp_disconnect,
 	.setsockopt =	ipv6_setsockopt,
diff --git a/net/ipv6/seg6.c b/net/ipv6/seg6.c
index 9b2f272ca..89d55770a 100644
--- a/net/ipv6/seg6.c
+++ b/net/ipv6/seg6.c
@@ -130,6 +130,11 @@ static int seg6_genl_sethmac(struct sk_buff *skb, struct genl_info *info)
 		goto out_unlock;
 	}
 
+	if (slen > nla_len(info->attrs[SEG6_ATTR_SECRET])) {
+		err = -EINVAL;
+		goto out_unlock;
+	}
+
 	if (hinfo) {
 		err = seg6_hmac_info_del(net, hmackeyid);
 		if (err)
diff --git a/net/ipv6/seg6_hmac.c b/net/ipv6/seg6_hmac.c
index a886a8f4c..b801283da 100644
--- a/net/ipv6/seg6_hmac.c
+++ b/net/ipv6/seg6_hmac.c
@@ -415,7 +415,6 @@ int __net_init seg6_hmac_net_init(struct net *net)
 
 	return 0;
 }
-EXPORT_SYMBOL(seg6_hmac_net_init);
 
 void seg6_hmac_exit(void)
 {
diff --git a/net/ipv6/seg6_iptunnel.c b/net/ipv6/seg6_iptunnel.c
index 26882fd93..2e9067285 100644
--- a/net/ipv6/seg6_iptunnel.c
+++ b/net/ipv6/seg6_iptunnel.c
@@ -176,6 +176,8 @@ int seg6_do_srh_encap(struct sk_buff *skb, struct ipv6_sr_hdr *osrh, int proto)
 	}
 #endif
 
+	hdr->payload_len = htons(skb->len - sizeof(struct ipv6hdr));
+
 	skb_postpush_rcsum(skb, hdr, tot_len);
 
 	return 0;
@@ -228,6 +230,8 @@ int seg6_do_srh_inline(struct sk_buff *skb, struct ipv6_sr_hdr *osrh)
 	}
 #endif
 
+	hdr->payload_len = htons(skb->len - sizeof(struct ipv6hdr));
+
 	skb_postpush_rcsum(skb, hdr, sizeof(struct ipv6hdr) + hdrlen);
 
 	return 0;
@@ -289,7 +293,6 @@ static int seg6_do_srh(struct sk_buff *skb)
 		break;
 	}
 
-	ipv6_hdr(skb)->payload_len = htons(skb->len - sizeof(struct ipv6hdr));
 	skb_set_transport_header(skb, sizeof(struct ipv6hdr));
 
 	return 0;
diff --git a/net/ipv6/seg6_local.c b/net/ipv6/seg6_local.c
index 607709a88..18970f6a6 100644
--- a/net/ipv6/seg6_local.c
+++ b/net/ipv6/seg6_local.c
@@ -415,7 +415,6 @@ static int input_action_end_b6(struct sk_buff *skb, struct seg6_local_lwt *slwt)
 	if (err)
 		goto drop;
 
-	ipv6_hdr(skb)->payload_len = htons(skb->len - sizeof(struct ipv6hdr));
 	skb_set_transport_header(skb, sizeof(struct ipv6hdr));
 
 	seg6_lookup_nexthop(skb, NULL, 0);
@@ -447,7 +446,6 @@ static int input_action_end_b6_encap(struct sk_buff *skb,
 	if (err)
 		goto drop;
 
-	ipv6_hdr(skb)->payload_len = htons(skb->len - sizeof(struct ipv6hdr));
 	skb_set_transport_header(skb, sizeof(struct ipv6hdr));
 
 	seg6_lookup_nexthop(skb, NULL, 0);
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 55c999cbe..420b9fcc1 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -314,9 +314,7 @@ static int ipip6_tunnel_get_prl(struct ip_tunnel *t,
 		kcalloc(cmax, sizeof(*kp), GFP_KERNEL | __GFP_NOWARN) :
 		NULL;
 
-	rcu_read_lock();
-
-	ca = t->prl_count < cmax ? t->prl_count : cmax;
+	ca = min(t->prl_count, cmax);
 
 	if (!kp) {
 		/* We don't try hard to allocate much memory for
@@ -331,7 +329,7 @@ static int ipip6_tunnel_get_prl(struct ip_tunnel *t,
 		}
 	}
 
-	c = 0;
+	rcu_read_lock();
 	for_each_prl_rcu(t->prl) {
 		if (c >= cmax)
 			break;
@@ -343,7 +341,7 @@ static int ipip6_tunnel_get_prl(struct ip_tunnel *t,
 		if (kprl.addr != htonl(INADDR_ANY))
 			break;
 	}
-out:
+
 	rcu_read_unlock();
 
 	len = sizeof(*kp) * c;
@@ -352,7 +350,7 @@ out:
 		ret = -EFAULT;
 
 	kfree(kp);
-
+out:
 	return ret;
 }