From patchwork Sun Nov 5 10:01:13 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vasily Averin X-Patchwork-Id: 834297 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3yVB6W40Nxz9t34 for ; Sun, 5 Nov 2017 21:01:23 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752844AbdKEKBR (ORCPT ); Sun, 5 Nov 2017 05:01:17 -0500 Received: from mailhub.sw.ru ([195.214.232.25]:29420 "EHLO relay.sw.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752786AbdKEKBP (ORCPT ); Sun, 5 Nov 2017 05:01:15 -0500 Received: from [172.16.24.21] (msk-vpn.virtuozzo.com [195.214.232.6]) by relay.sw.ru (8.13.4/8.13.4) with ESMTP id vA5A1D5Z030427 for ; Sun, 5 Nov 2017 13:01:14 +0300 (MSK) From: Vasily Averin Subject: [PATCH 12/21] l2tp: exit_net cleanup check added To: netdev@vger.kernel.org Message-ID: <32b4a85d-85c4-0509-019e-27475ac70d58@virtuozzo.com> Date: Sun, 5 Nov 2017 13:01:13 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 Content-Language: en-US Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Be sure that l2tp_session_hlist array initialized in net_init hook was return to initial state. Signed-off-by: Vasily Averin --- net/l2tp/l2tp_core.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c index 02d6110..109fd36 100644 --- a/net/l2tp/l2tp_core.c +++ b/net/l2tp/l2tp_core.c @@ -1888,6 +1888,7 @@ static __net_exit void l2tp_exit_net(struct net *net) { struct l2tp_net *pn = l2tp_pernet(net); struct l2tp_tunnel *tunnel = NULL; + int hash; rcu_read_lock_bh(); list_for_each_entry_rcu(tunnel, &pn->l2tp_tunnel_list, list) { @@ -1897,6 +1898,11 @@ static __net_exit void l2tp_exit_net(struct net *net) flush_workqueue(l2tp_wq); rcu_barrier(); + + for (hash = 0; hash < L2TP_HASH_SIZE_2; hash++) + if (WARN(!hlist_empty(&pn->l2tp_session_hlist[hash]), + "net %p exit: l2tp session_hlist is not empty\n", net)) + break; } static struct pernet_operations l2tp_net_ops = {