diff options
Diffstat (limited to 'net/ipv6/sit.c')
| -rw-r--r-- | net/ipv6/sit.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index 1efa95a99f4..eb20bb690ab 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); |