From 300bf591deca8d108799e70e9300dc31765643e3 Mon Sep 17 00:00:00 2001
From: Daniel Lezcano <dlezcano@fr.ibm.com>
Date: Wed, 5 Mar 2008 10:46:31 -0800
Subject: [PATCH] [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>
---
 net/ipv6/proc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c
index 5ba7ae849d04..2453f2229ef7 100644
--- 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;