From patchwork Mon Jan 10 07:23:10 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 531518 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 48D7DC433FE for ; Mon, 10 Jan 2022 07:28:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240022AbiAJH2L (ORCPT ); Mon, 10 Jan 2022 02:28:11 -0500 Received: from ams.source.kernel.org ([145.40.68.75]:56806 "EHLO ams.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235090AbiAJH0L (ORCPT ); Mon, 10 Jan 2022 02:26:11 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id EF903B81215; Mon, 10 Jan 2022 07:26:09 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 29E65C36AE9; Mon, 10 Jan 2022 07:26:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1641799568; bh=BotyTAlYBjydCinMhmpoBUzlSmL9tfPoNk3DnutdsdQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eikY/NFxXCsQcLrN9JIvO8b9Wc8MqNq2e91hC4zTWFmhVa7Duo4RVxgRi11IFqBZI 9r4F2lKoqcnPYTqf7orRtsLs28zKFFNnKWE7Bmf1cmHAOByQydX6Fhykz2RkQZ+OPr EsiibfBPlyP+TvyinZb+dwuYBWOa+eqt0X+QwAYQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, David Ahern , Nicolas Dichtel , Jakub Kicinski , Sasha Levin Subject: [PATCH 4.14 17/22] ipv6: Continue processing multipath route even if gateway attribute is invalid Date: Mon, 10 Jan 2022 08:23:10 +0100 Message-Id: <20220110071814.835570848@linuxfoundation.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220110071814.261471354@linuxfoundation.org> References: <20220110071814.261471354@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: David Ahern [ Upstream commit e30a845b0376eb51c9c94f56bbd53b2e08ba822f ] ip6_route_multipath_del loop continues processing the multipath attribute even if delete of a nexthop path fails. For consistency, do the same if the gateway attribute is invalid. Fixes: 1ff15a710a86 ("ipv6: Check attribute length for RTA_GATEWAY when deleting multipath route") Signed-off-by: David Ahern Acked-by: Nicolas Dichtel Link: https://lore.kernel.org/r/20220103171911.94739-1-dsahern@kernel.org Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- net/ipv6/route.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 9ae48a20c3207..008ebda35ed22 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -3367,8 +3367,10 @@ static int ip6_route_multipath_del(struct fib6_config *cfg, if (nla) { err = fib6_gw_from_attr(&r_cfg.fc_gateway, nla, extack); - if (err) - return err; + if (err) { + last_err = err; + goto next_rtnh; + } r_cfg.fc_flags |= RTF_GATEWAY; } @@ -3377,6 +3379,7 @@ static int ip6_route_multipath_del(struct fib6_config *cfg, if (err) last_err = err; +next_rtnh: rtnh = rtnh_next(rtnh, &remaining); }