In this case net_generic returns NULL. We must handle this gracefully.
Signed-off-by: Vladimir Davydov <[email protected]>
---
net/ipv4/ipip.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 7842dcb2fd65..b1004fb7539c 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -357,6 +357,9 @@ static int ipip_newlink(struct net *src_net, struct
net_device *dev,
{
struct ip_tunnel_parm p;
+ if (net_generic(dev_net(dev), ipip_net_id) == NULL)
+ return -EACCES;
+
ipip_netlink_parms(data, &p);
return ip_tunnel_newlink(dev, tb, &p);
}
--
2.1.4
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