* [PATCH 1/2] ip_tunnel: fix potential issue in ip_tunnel_rcv
@ 2017-06-07 14:16 Haishuang Yan
2017-06-07 14:16 ` [PATCH 2/2] ip6_tunnel: fix potential issue in __ip6_tnl_rcv Haishuang Yan
2017-06-07 14:48 ` [PATCH 1/2] ip_tunnel: fix potential issue in ip_tunnel_rcv Eric Dumazet
0 siblings, 2 replies; 4+ messages in thread
From: Haishuang Yan @ 2017-06-07 14:16 UTC (permalink / raw)
To: =David S. Miller, Alexey Kuznetsov, James Morris,
Hideaki YOSHIFUJI, Patrick McHardy
Cc: netdev, linux-kernel, Haishuang Yan
When ip_tunnel_rcv fails, the tun_dst won't be freed, so move
skb_dst_set to begin and tun_dst would be freed by kfree_skb.
Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
---
net/ipv4/ip_tunnel.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
index b878ecb..27fc20f 100644
--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -386,6 +386,9 @@ int ip_tunnel_rcv(struct ip_tunnel *tunnel, struct sk_buff *skb,
const struct iphdr *iph = ip_hdr(skb);
int err;
+ if (tun_dst)
+ skb_dst_set(skb, (struct dst_entry *)tun_dst);
+
#ifdef CONFIG_NET_IPGRE_BROADCAST
if (ipv4_is_multicast(iph->daddr)) {
tunnel->dev->stats.multicast++;
@@ -439,9 +442,6 @@ int ip_tunnel_rcv(struct ip_tunnel *tunnel, struct sk_buff *skb,
skb->dev = tunnel->dev;
}
- if (tun_dst)
- skb_dst_set(skb, (struct dst_entry *)tun_dst);
-
gro_cells_receive(&tunnel->gro_cells, skb);
return 0;
--
1.8.3.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH 2/2] ip6_tunnel: fix potential issue in __ip6_tnl_rcv
2017-06-07 14:16 [PATCH 1/2] ip_tunnel: fix potential issue in ip_tunnel_rcv Haishuang Yan
@ 2017-06-07 14:16 ` Haishuang Yan
2017-06-07 14:48 ` [PATCH 1/2] ip_tunnel: fix potential issue in ip_tunnel_rcv Eric Dumazet
1 sibling, 0 replies; 4+ messages in thread
From: Haishuang Yan @ 2017-06-07 14:16 UTC (permalink / raw)
To: =David S. Miller, Alexey Kuznetsov, James Morris,
Hideaki YOSHIFUJI, Patrick McHardy
Cc: netdev, linux-kernel, Haishuang Yan
When __ip6_tnl_rcv fails, the tun_dst won't be freed, so move
skb_dst_set to begin and tun_dst would be freed by kfree_skb.
Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
---
net/ipv6/ip6_tunnel.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 9b37f97..bf45f1b 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -789,6 +789,9 @@ static int __ip6_tnl_rcv(struct ip6_tnl *tunnel, struct sk_buff *skb,
const struct ipv6hdr *ipv6h = ipv6_hdr(skb);
int err;
+ if (tun_dst)
+ skb_dst_set(skb, (struct dst_entry *)tun_dst);
+
if ((!(tpi->flags & TUNNEL_CSUM) &&
(tunnel->parms.i_flags & TUNNEL_CSUM)) ||
((tpi->flags & TUNNEL_CSUM) &&
@@ -852,9 +855,6 @@ static int __ip6_tnl_rcv(struct ip6_tnl *tunnel, struct sk_buff *skb,
skb_scrub_packet(skb, !net_eq(tunnel->net, dev_net(tunnel->dev)));
- if (tun_dst)
- skb_dst_set(skb, (struct dst_entry *)tun_dst);
-
gro_cells_receive(&tunnel->gro_cells, skb);
return 0;
--
1.8.3.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH 1/2] ip_tunnel: fix potential issue in ip_tunnel_rcv
2017-06-07 14:16 [PATCH 1/2] ip_tunnel: fix potential issue in ip_tunnel_rcv Haishuang Yan
2017-06-07 14:16 ` [PATCH 2/2] ip6_tunnel: fix potential issue in __ip6_tnl_rcv Haishuang Yan
@ 2017-06-07 14:48 ` Eric Dumazet
2017-06-08 0:10 ` 严海双
1 sibling, 1 reply; 4+ messages in thread
From: Eric Dumazet @ 2017-06-07 14:48 UTC (permalink / raw)
To: Haishuang Yan; +Cc: David S. Miller, netdev, linux-kernel
On Wed, 2017-06-07 at 22:16 +0800, Haishuang Yan wrote:
> When ip_tunnel_rcv fails, the tun_dst won't be freed, so move
> skb_dst_set to begin and tun_dst would be freed by kfree_skb.
>
> Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
> ---
Please add the missing Fixes: tag and CC author of the patch that added
this bug, so that he has a chance to comment and avoid future similar
bugs.
Thanks.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH 1/2] ip_tunnel: fix potential issue in ip_tunnel_rcv
2017-06-07 14:48 ` [PATCH 1/2] ip_tunnel: fix potential issue in ip_tunnel_rcv Eric Dumazet
@ 2017-06-08 0:10 ` 严海双
0 siblings, 0 replies; 4+ messages in thread
From: 严海双 @ 2017-06-08 0:10 UTC (permalink / raw)
To: Eric Dumazet; +Cc: David S. Miller, netdev, linux-kernel
> On 7 Jun 2017, at 10:48 PM, Eric Dumazet <eric.dumazet@gmail.com> wrote:
>
> On Wed, 2017-06-07 at 22:16 +0800, Haishuang Yan wrote:
>> When ip_tunnel_rcv fails, the tun_dst won't be freed, so move
>> skb_dst_set to begin and tun_dst would be freed by kfree_skb.
>>
>> Signed-off-by: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
>> ---
>
> Please add the missing Fixes: tag and CC author of the patch that added
> this bug, so that he has a chance to comment and avoid future similar
> bugs.
>
> Thanks.
>
>
>
Ok, I will add these information in v2 commit.
Thanks.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2017-06-08 0:10 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2017-06-07 14:16 [PATCH 1/2] ip_tunnel: fix potential issue in ip_tunnel_rcv Haishuang Yan
2017-06-07 14:16 ` [PATCH 2/2] ip6_tunnel: fix potential issue in __ip6_tnl_rcv Haishuang Yan
2017-06-07 14:48 ` [PATCH 1/2] ip_tunnel: fix potential issue in ip_tunnel_rcv Eric Dumazet
2017-06-08 0:10 ` 严海双
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