From: Trond Myklebust <Trond.Myklebust@netapp.com>
Date: Tue, 8 Jan 2013 14:31:13 +0000 (-0500)
Subject: SUNRPC: Fix an RCU dereference in xs_local_rpcbind
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3dc0da278e2b26fa8e353b3a962b2c89e184d353;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

SUNRPC: Fix an RCU dereference in xs_local_rpcbind

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
---

diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 1897181d7438..f7d6e4f8c162 100644
--- 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)