From: Ying Xue <ying.xue@windriver.com>
Date: Mon, 16 Mar 2015 10:19:12 +0000 (+0800)
Subject: net: kernel socket should be released in init_net namespace
X-Git-Tag: v4.1-rc1~128^2~229
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=c243d7e20996254f89c28d4838b5feca735c030d;p=uclinux-h8%2Flinux.git

net: kernel socket should be released in init_net namespace

Creating a kernel socket with sock_create_kern() happens in "init_net"
namespace, however, releasing it with sk_release_kernel() occurs in
the current namespace which may be different with "init_net" namespace.
Therefore, we should guarantee that the namespace in which a kernel
socket is created is same as the socket is created.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/core/sock.c b/net/core/sock.c
index a950b54248da..d9f9e4825362 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1454,8 +1454,8 @@ void sk_release_kernel(struct sock *sk)
 		return;
 
 	sock_hold(sk);
-	sock_release(sk->sk_socket);
 	sock_net_set(sk, get_net(&init_net));
+	sock_release(sk->sk_socket);
 	sock_put(sk);
 }
 EXPORT_SYMBOL(sk_release_kernel);