From patchwork Wed Jan 10 14:29:18 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pablo Neira Ayuso X-Patchwork-Id: 858320 X-Patchwork-Delegate: pablo@netfilter.org Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.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=netfilter-devel-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3zGrxM4FJYz9s72 for ; Thu, 11 Jan 2018 01:29:27 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756182AbeAJO30 (ORCPT ); Wed, 10 Jan 2018 09:29:26 -0500 Received: from mail.us.es ([193.147.175.20]:34962 "EHLO mail.us.es" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755414AbeAJO30 (ORCPT ); Wed, 10 Jan 2018 09:29:26 -0500 Received: from antivirus1-rhel7.int (unknown [192.168.2.11]) by mail.us.es (Postfix) with ESMTP id B93C11EC2C5 for ; Wed, 10 Jan 2018 15:29:24 +0100 (CET) Received: from antivirus1-rhel7.int (localhost [127.0.0.1]) by antivirus1-rhel7.int (Postfix) with ESMTP id AB007DA843 for ; Wed, 10 Jan 2018 15:29:24 +0100 (CET) Received: by antivirus1-rhel7.int (Postfix, from userid 99) id A0199DA84A; Wed, 10 Jan 2018 15:29:24 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on antivirus1-rhel7.int X-Spam-Level: X-Spam-Status: No, score=-108.2 required=7.5 tests=ALL_TRUSTED,BAYES_50, SMTPAUTH_US2,USER_IN_WHITELIST autolearn=disabled version=3.4.1 Received: from antivirus1-rhel7.int (localhost [127.0.0.1]) by antivirus1-rhel7.int (Postfix) with ESMTP id 347D2DA843 for ; Wed, 10 Jan 2018 15:29:22 +0100 (CET) Received: from 192.168.1.97 (192.168.1.97) by antivirus1-rhel7.int (F-Secure/fsigk_smtp/550/antivirus1-rhel7.int); Wed, 10 Jan 2018 15:29:22 +0100 (CET) X-Virus-Status: clean(F-Secure/fsigk_smtp/550/antivirus1-rhel7.int) Received: from salvia.here (129.166.216.87.static.jazztel.es [87.216.166.129]) (Authenticated sender: pneira@us.es) by entrada.int (Postfix) with ESMTPA id F31214265A32 for ; Wed, 10 Jan 2018 15:29:21 +0100 (CET) X-SMTPAUTHUS: auth mail.us.es From: Pablo Neira Ayuso To: netfilter-devel@vger.kernel.org Subject: [PATCH nf-next] netfilter: core: return EBUSY in case NAT hook is already in use Date: Wed, 10 Jan 2018 15:29:18 +0100 Message-Id: <20180110142918.23639-1-pablo@netfilter.org> X-Mailer: git-send-email 2.11.0 X-Virus-Scanned: ClamAV using ClamSMTP Sender: netfilter-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netfilter-devel@vger.kernel.org EEXIST is used for an object that already exists, with the same name/handle. However, there no same object there, instead there is a object that is using the single slot that is available for NAT hooks since patch f92b40a8b264 ("netfilter: core: only allow one nat hook per hook point"). Let's change this return value before this behaviour gets exposed in the first -rc1. Signed-off-by: Pablo Neira Ayuso --- net/netfilter/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/netfilter/core.c b/net/netfilter/core.c index 3f8e2d06b9cc..0f6b8172fb9a 100644 --- a/net/netfilter/core.c +++ b/net/netfilter/core.c @@ -140,7 +140,7 @@ nf_hook_entries_grow(const struct nf_hook_entries *old, if (reg->nat_hook && orig_ops[i]->nat_hook) { kvfree(new); - return ERR_PTR(-EEXIST); + return ERR_PTR(-EBUSY); } if (inserted || reg->priority > orig_ops[i]->priority) {