From: Denis V. Lunev <den@openvz.org>
Date: Wed, 16 Apr 2008 08:59:46 +0000 (-0700)
Subject: [NETNS]: Add netns refcnt debug for kernel sockets.
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=65a18ec58e5e6186103f62f720acea94dfb26f4e;p=linux-beck.git

[NETNS]: Add netns refcnt debug for kernel sockets.

Protocol control sockets and netlink kernel sockets should not prevent the
namespace stop request. They are initialized and disposed in a special way by
sk_change_net/sk_release_kernel.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/include/net/sock.h b/include/net/sock.h
index 09255eae93e9..dc42b44c2aa1 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1314,7 +1314,7 @@ void sock_net_set(struct sock *sk, struct net *net)
 static inline void sk_change_net(struct sock *sk, struct net *net)
 {
 	put_net(sock_net(sk));
-	sock_net_set(sk, net);
+	sock_net_set(sk, hold_net(net));
 }
 
 extern void sock_enable_timestamp(struct sock *sk);
diff --git a/net/core/sock.c b/net/core/sock.c
index c0ecbdcf75d8..54c836a2216b 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1001,6 +1001,7 @@ void sk_release_kernel(struct sock *sk)
 
 	sock_hold(sk);
 	sock_release(sk->sk_socket);
+	release_net(sock_net(sk));
 	sock_net_set(sk, get_net(&init_net));
 	sock_put(sk);
 }