From: Eric W. Biederman <ebiederm@xmission.com>
Date: Sat, 9 May 2015 02:11:33 +0000 (-0500)
Subject: netlink: Create kernel netlink sockets in the proper network namespace
X-Git-Tag: firefly_0821_release~176^2~1587^2~331^2~1
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=13d3078e22f5651cd0184ce1b4e4ab8a46c62b27;p=firefly-linux-kernel-4.4.55.git

netlink: Create kernel netlink sockets in the proper network namespace

Utilize the new functionality of sk_alloc so that nothing needs to be
done to suprress the reference counting on kernel sockets.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index be6665ab7f40..e9b9559731bb 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -2516,16 +2516,11 @@ __netlink_kernel_create(struct net *net, int unit, struct module *module,
 
 	if (sock_create_lite(PF_NETLINK, SOCK_DGRAM, unit, &sock))
 		return NULL;
-	/*
-	 * We have to just have a reference on the net from sk, but don't
-	 * get_net it. Besides, we cannot get and then put the net here.
-	 * So we create one inside init_net and the move it to net.
-	 */
-	if (__netlink_create(&init_net, sock, cb_mutex, unit, 0) < 0)
+
+	if (__netlink_create(net, sock, cb_mutex, unit, 1) < 0)
 		goto out_sock_release_nosk;
 
 	sk = sock->sk;
-	sk_change_net(sk, net);
 
 	if (!cfg || cfg->groups < 32)
 		groups = 32;
@@ -2581,7 +2576,10 @@ EXPORT_SYMBOL(__netlink_kernel_create);
 void
 netlink_kernel_release(struct sock *sk)
 {
-	sk_release_kernel(sk);
+	if (sk == NULL || sk->sk_socket == NULL)
+		return;
+
+	sock_release(sk->sk_socket);
 }
 EXPORT_SYMBOL(netlink_kernel_release);