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 a950b54..d9f9e48 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1454,8 +1454,8 @@
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);