* [PATCH net] ip6_gre: release cached dst on tunnel removal
@ 2015-08-25 14:20 Nicolas Dichtel
2015-08-25 21:34 ` David Miller
0 siblings, 1 reply; 2+ messages in thread
From: Nicolas Dichtel @ 2015-08-25 14:20 UTC (permalink / raw)
To: davem; +Cc: netdev, huaibin Wang, Dmitry Kozlov, Nicolas Dichtel
From: huaibin Wang <huaibin.wang@6wind.com>
When a tunnel is deleted, the cached dst entry should be released.
This problem may prevent the removal of a netns (seen with a x-netns IPv6
gre tunnel):
unregister_netdevice: waiting for lo to become free. Usage count = 3
CC: Dmitry Kozlov <xeb@mail.ru>
Fixes: c12b395a4664 ("gre: Support GRE over IPv6")
Signed-off-by: huaibin Wang <huaibin.wang@6wind.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
---
net/ipv6/ip6_gre.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index a38d3ac0f18f..69f4f689f06a 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -361,6 +361,7 @@ static void ip6gre_tunnel_uninit(struct net_device *dev)
struct ip6gre_net *ign = net_generic(t->net, ip6gre_net_id);
ip6gre_tunnel_unlink(ign, t);
+ ip6_tnl_dst_reset(t);
dev_put(dev);
}
--
2.4.2
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH net] ip6_gre: release cached dst on tunnel removal
2015-08-25 14:20 [PATCH net] ip6_gre: release cached dst on tunnel removal Nicolas Dichtel
@ 2015-08-25 21:34 ` David Miller
0 siblings, 0 replies; 2+ messages in thread
From: David Miller @ 2015-08-25 21:34 UTC (permalink / raw)
To: nicolas.dichtel; +Cc: netdev, huaibin.wang, xeb
From: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Date: Tue, 25 Aug 2015 16:20:34 +0200
> From: huaibin Wang <huaibin.wang@6wind.com>
>
> When a tunnel is deleted, the cached dst entry should be released.
>
> This problem may prevent the removal of a netns (seen with a x-netns IPv6
> gre tunnel):
> unregister_netdevice: waiting for lo to become free. Usage count = 3
>
> CC: Dmitry Kozlov <xeb@mail.ru>
> Fixes: c12b395a4664 ("gre: Support GRE over IPv6")
> Signed-off-by: huaibin Wang <huaibin.wang@6wind.com>
> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Applied and queued up for -stable, thanks.
^ permalink raw reply [flat|nested] 2+ messages in thread
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