From: Lin Yi <teroincn@163.com>
Date: Mon, 10 Jun 2019 10:16:56 +0800
Subject: [PATCH] net :sunrpc :clnt :Fix xps refcount imbalance on the error
 path
Git-commit: b96226148491505318228ac52624956bd98f9e0c
Patch-mainline: v5.2
References: git-fixes

rpc_clnt_add_xprt take a reference to struct rpc_xprt_switch, but forget
to release it before return, may lead to a memory leak.

Signed-off-by: Lin Yi <teroincn@163.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Acked-by: NeilBrown <neilb@suse.com>

---
 net/sunrpc/clnt.c |    1 +
 1 file changed, 1 insertion(+)

--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -2839,6 +2839,7 @@ int rpc_clnt_add_xprt(struct rpc_clnt *c
 	xprt = xprt_iter_xprt(&clnt->cl_xpi);
 	if (xps == NULL || xprt == NULL) {
 		rcu_read_unlock();
+		xprt_switch_put(xps);
 		return -EAGAIN;
 	}
 	resvport = xprt->resvport;