From: David Howells <dhowells@redhat.com>
Date: Thu, 27 Apr 2017 21:40:23 +0000 (+0100)
Subject: net: Initialise init_net.count to 1
X-Git-Tag: v4.12-rc1~129^2~47
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=b5082df8019a;p=linux.git

net: Initialise init_net.count to 1

Initialise init_net.count to 1 for its pointer from init_nsproxy lest
someone tries to do a get_net() and a put_net() in a process in which
current->ns_proxy->net_ns points to the initial network namespace.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index c1d8aed8e5a8..1934efd4a9d4 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -35,7 +35,8 @@ LIST_HEAD(net_namespace_list);
 EXPORT_SYMBOL_GPL(net_namespace_list);
 
 struct net init_net = {
-	.dev_base_head = LIST_HEAD_INIT(init_net.dev_base_head),
+	.count		= ATOMIC_INIT(1),
+	.dev_base_head	= LIST_HEAD_INIT(init_net.dev_base_head),
 };
 EXPORT_SYMBOL(init_net);