From: Duan Jiong <duanj.fnst@cn.fujitsu.com>
To: David Miller <davem@davemloft.net>
Cc: Pravin B Shelar <pshelar@nicira.com>,
Daniel Petre <daniel.petre@rcs-rds.ro>,
Eric Dumazet <edumazet@google.com>,
netdev <netdev@vger.kernel.org>
Subject: [PATCH] ip_tunnel: clear IPCB in ip_tunnel_xmit() in case dst_link_failure() is called
Date: Tue, 21 Jan 2014 15:18:56 +0800 [thread overview]
Message-ID: <52DE1F60.2060109@cn.fujitsu.com> (raw)
commit a622260254ee48("ip_tunnel: fix kernel panic with icmp_dest_unreach")
clear IPCB in ip_tunnel_xmit() , or else skb->cb[] may contain garbage from
GSO segmentation layer.
But commit 0e6fbc5b6c621("ip_tunnels: extend iptunnel_xmit()") refactor codes,
and it clear IPCB behind the dst_link_failure().
So clear IPCB in ip_tunnel_xmit() just like commti a622260254ee48("ip_tunnel:
fix kernel panic with icmp_dest_unreach").
Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com>
---
net/ipv4/ip_tunnel.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
index 90ff957..dda1e9a 100644
--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -535,6 +535,7 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
inner_iph = (const struct iphdr *)skb_inner_network_header(skb);
+ memset(IPCB(skb), 0, sizeof(*IPCB(skb)));
dst = tnl_params->daddr;
if (dst == 0) {
/* NBMA tunnel */
--
1.8.3.1
next reply other threads:[~2014-01-21 7:19 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-21 7:18 Duan Jiong [this message]
2014-01-21 18:33 ` [PATCH] ip_tunnel: clear IPCB in ip_tunnel_xmit() in case dst_link_failure() is called Pravin Shelar
2014-01-23 5:24 ` David Miller
2014-01-23 6:00 ` [PATCH v2] " Duan Jiong
2014-01-23 21:28 ` David Miller
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