[NETNS][IPV6] proc - protect snmp6 from non-init_net calls

This patchset avoids creation of the /proc entry for snmp6 when
the call is made from a network namespace different from the init_net.

Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c
index 5ba7ae849d042c45ad970c9b0aa1a2acbf4ccc2c..2453f2229ef7b7ab805ccabc5fd892590216bef3 100644 (file)
--- a/net/ipv6/proc.c
+++ b/net/ipv6/proc.c
@@ -220,6 +220,9 @@ int snmp6_register_dev(struct inet6_dev *idev)
        if (!idev || !idev->dev)
                return -EINVAL;
 
+       if (idev->dev->nd_net != &init_net)
+               return 0;
+
        if (!proc_net_devsnmp6)
                return -ENOENT;