From: Cong Wang <xiyou.wangcong@gmail.com>
Date: Thu, 23 Aug 2018 16:19:44 -0700
Subject: tipc: fix a missing rhashtable_walk_exit()
Git-commit: bd583fe30427500a2d0abe25724025b1cb5e2636
Patch-mainline: v4.19-rc3
References: networking-stable-18_09_11

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: Jiri Slaby <jslaby@suse.cz>
---
 net/tipc/socket.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -2268,6 +2268,8 @@ void tipc_sk_reinit(struct net *net)
 walk_stop:
 		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)