diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index 63282934725e0971672bc146491c5aa178816b3e..5c14ed63e56c97c8b53f188fd0bfd6997a3e8f8c 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -809,7 +809,8 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
 
 	max_headroom = LL_RESERVED_SPACE(tdev) + gre_hlen;
 
-	if (skb_headroom(skb) < max_headroom || skb_cloned(skb) || skb_shared(skb)) {
+	if (skb_headroom(skb) < max_headroom || skb_shared(skb)||
+	    (skb_cloned(skb) && !skb_clone_writable(skb, 0))) {
 		struct sk_buff *new_skb = skb_realloc_headroom(skb, max_headroom);
 		if (!new_skb) {
 			ip_rt_put(rt);
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index ebd2f2d532f66bd1e57d173cde001026da1527dd..396437242a1b36186db17ff5aaa1bf5d60a1734b 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -595,7 +595,8 @@ static int ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
 	 */
 	max_headroom = (LL_RESERVED_SPACE(tdev)+sizeof(struct iphdr));
 
-	if (skb_headroom(skb) < max_headroom || skb_cloned(skb) || skb_shared(skb)) {
+	if (skb_headroom(skb) < max_headroom || skb_shared(skb) ||
+	    (skb_cloned(skb) && !skb_clone_writable(skb, 0))) {
 		struct sk_buff *new_skb = skb_realloc_headroom(skb, max_headroom);
 		if (!new_skb) {
 			ip_rt_put(rt);
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index a0902fbdb4e1ebfa71ee3f4f4d349b0735e923e2..281aee42d3f0d9c35e26c1dac4863f59628c8b62 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -883,8 +883,8 @@ static int ip6_tnl_xmit2(struct sk_buff *skb,
 	 */
 	max_headroom += LL_RESERVED_SPACE(tdev);
 
-	if (skb_headroom(skb) < max_headroom ||
-	    skb_cloned(skb) || skb_shared(skb)) {
+	if (skb_headroom(skb) < max_headroom || skb_shared(skb) ||
+	    (skb_cloned(skb) && !skb_clone_writable(skb, 0))) {
 		struct sk_buff *new_skb;
 
 		if (!(new_skb = skb_realloc_headroom(skb, max_headroom)))
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 1efa95a99f4533198e353f713f7287cb522ec55d..eb20bb690abd736e6699f1af7987cb8a1287d3c3 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -532,7 +532,8 @@ static int ipip6_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
 	 */
 	max_headroom = LL_RESERVED_SPACE(tdev)+sizeof(struct iphdr);
 
-	if (skb_headroom(skb) < max_headroom || skb_cloned(skb) || skb_shared(skb)) {
+	if (skb_headroom(skb) < max_headroom || skb_shared(skb) ||
+	    (skb_cloned(skb) && !skb_clone_writable(skb, 0))) {
 		struct sk_buff *new_skb = skb_realloc_headroom(skb, max_headroom);
 		if (!new_skb) {
 			ip_rt_put(rt);