From 36b59c8e48e44b34c0929c8de269b186f3b2dadc Mon Sep 17 00:00:00 2001
From: Cong Wang <xiyou.wangcong@gmail.com>
Date: Thu, 23 Aug 2018 16:19:44 -0700
Subject: [PATCH] tipc: fix a missing rhashtable_walk_exit()

[ Upstream commit bd583fe30427500a2d0abe25724025b1cb5e2636 ]

rhashtable_walk_exit() must be paired with rhashtable_walk_enter().

Fixes: 40f9f4397060 ("tipc: Fix tipc_sk_reinit race conditions")
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/tipc/socket.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index 930852c54d7a..0a5fa347135e 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -2675,6 +2675,8 @@ void tipc_sk_reinit(struct net *net)
 
 		rhashtable_walk_stop(&iter);
 	} while (tsk == ERR_PTR(-EAGAIN));
+
+	rhashtable_walk_exit(&iter);
 }
 
 static struct tipc_sock *tipc_sk_lookup(struct net *net, u32 portid)