[NETNS]: Inet control socket should not hold a namespace.

This is a generic requirement, so make inet_ctl_sock_create namespace
aware and create a inet_ctl_sock_destroy wrapper around
sk_release_kernel.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 5 insertions, 2 deletions

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index cad664bf3f2e..cf766ad15776 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1251,7 +1251,8 @@ out:
 }
 
 int inet_ctl_sock_create(struct sock **sk, unsigned short family,
-                         unsigned short type, unsigned char protocol)
+                         unsigned short type, unsigned char protocol,
+                         struct net *net)
 {
         struct socket *sock;
         int rc = sock_create_kern(family, type, protocol, &sock);
@@ -1265,6 +1266,8 @@ int inet_ctl_sock_create(struct sock **sk, unsigned short family,
                  * we do not wish this socket to see incoming packets.
                  */
                 (*sk)->sk_prot->unhash(*sk);
+
+                sk_change_net(*sk, net);
         }
         return rc;
 }
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index cfe5df76e14b..dc8c3dc75fe5 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -2491,7 +2491,7 @@ struct proto tcp_prot = {
 void __init tcp_v4_init(void)
 {
         if (inet_ctl_sock_create(&tcp_sock, PF_INET, SOCK_RAW,
-                                 IPPROTO_TCP) < 0)
+                                 IPPROTO_TCP, &init_net) < 0)
                 panic("Failed to create the TCP control socket.\n");
 }