SUNRPC: Fix an RCU dereference in xs_local_rpcbind

[firefly-linux-kernel-4.4.55.git] / net / sunrpc / xprtsock.c

diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 1897181d743827328308e99094f2fe097bfd1856..f7d6e4f8c1626fbfdebd93a51ff63b3f18ca1967 100644 (file)
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -1731,7 +1731,9 @@ static int xs_bind(struct sock_xprt *transport, struct socket *sock)
  */
 static void xs_local_rpcbind(struct rpc_task *task)
 {
-       xprt_set_bound(task->tk_xprt);
+       rcu_read_lock();
+       xprt_set_bound(rcu_dereference(task->tk_client->cl_xprt));
+       rcu_read_unlock();
 }
 
 static void xs_local_set_port(struct rpc_xprt *xprt, unsigned short port)