diff options
| author | Haishuang Yan <yanhaishuang@cmss.chinamobile.com> | 2017-06-04 14:43:43 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-13 19:48:19 +0200 |
| commit | 92b86857ed7e8be6843d216fefe2178b172dbf63 (patch) | |
| tree | d51586384591ba1fe57c856f3cb98d1a9d0be25d /net | |
| parent | 6083f1625b75a9c711ab14e95f581fc2bb8e3710 (diff) | |
sit: reload iphdr in ipip6_rcv
[ Upstream commit b699d0035836f6712917a41e7ae58d84359b8ff9 ]
Since iptunnel_pull_header() can call pskb_may_pull(),
we must reload any pointer that was related to skb->head.
Fixes: a09a4c8dd1ec ("tunnels: Remove encapsulation offloads on decap")
Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv6/sit.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c index d4d84da28672..181fd958c82b 100644 --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -657,6 +657,7 @@ static int ipip6_rcv(struct sk_buff *skb) if (iptunnel_pull_header(skb, 0, htons(ETH_P_IPV6), !net_eq(tunnel->net, dev_net(tunnel->dev)))) goto out; + iph = ip_hdr(skb); err = IP_ECN_decapsulate(iph, skb); if (unlikely(err)) { |