From patchwork Fri Jun 4 15:17:31 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Jason A. Donenfeld" X-Patchwork-Id: 455004 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2AA56C07E94 for ; Fri, 4 Jun 2021 15:18:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1740761402 for ; Fri, 4 Jun 2021 15:18:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230341AbhFDPTs (ORCPT ); Fri, 4 Jun 2021 11:19:48 -0400 Received: from mail.zx2c4.com ([104.131.123.232]:54916 "EHLO mail.zx2c4.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229778AbhFDPTq (ORCPT ); Fri, 4 Jun 2021 11:19:46 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zx2c4.com; s=20210105; t=1622819878; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=wFEvuNyHfPiVav+6JQ1EDLZB4jXWgskHb1VvAjhvm2A=; b=Nfqk1Tx6XQy4/vZ7k+Dk9sFbGxN6IaInu3npUWf/qA0QCjVlgdsFO/1xakviI3UBOG05Vh iRsJtgAGK0e/QWfHaSjxjeh6hhFzzWzaGuIcDMhR11l1EPDh7QOg/sc78hDUMpdrWKYJSR QQR3yVv8YQtoC0+Vf/JiB1tD+YZ+rqs= Received: by mail.zx2c4.com (ZX2C4 Mail Server) with ESMTPSA id 5c409dc9 (TLSv1.3:AEAD-AES256-GCM-SHA384:256:NO); Fri, 4 Jun 2021 15:17:58 +0000 (UTC) From: "Jason A. Donenfeld" To: netdev@vger.kernel.org, davem@davemloft.net, kuba@kernel.org Cc: "Jason A. Donenfeld" , Hangbin Liu , stable@vger.kernel.org Subject: [PATCH net 2/9] wireguard: selftests: make sure rp_filter is disabled on vethc Date: Fri, 4 Jun 2021 17:17:31 +0200 Message-Id: <20210604151738.220232-3-Jason@zx2c4.com> In-Reply-To: <20210604151738.220232-1-Jason@zx2c4.com> References: <20210604151738.220232-1-Jason@zx2c4.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Some distros may enable strict rp_filter by default, which will prevent vethc from receiving the packets with an unrouteable reverse path address. Reported-by: Hangbin Liu Fixes: e7096c131e51 ("net: WireGuard secure network tunnel") Cc: stable@vger.kernel.org Signed-off-by: Jason A. Donenfeld --- tools/testing/selftests/wireguard/netns.sh | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/testing/selftests/wireguard/netns.sh b/tools/testing/selftests/wireguard/netns.sh index 7ed7cd95e58f..ebc4ee0fe179 100755 --- a/tools/testing/selftests/wireguard/netns.sh +++ b/tools/testing/selftests/wireguard/netns.sh @@ -363,6 +363,7 @@ ip1 -6 rule add table main suppress_prefixlength 0 ip1 -4 route add default dev wg0 table 51820 ip1 -4 rule add not fwmark 51820 table 51820 ip1 -4 rule add table main suppress_prefixlength 0 +n1 bash -c 'printf 0 > /proc/sys/net/ipv4/conf/vethc/rp_filter' # Flood the pings instead of sending just one, to trigger routing table reference counting bugs. n1 ping -W 1 -c 100 -f 192.168.99.7 n1 ping -W 1 -c 100 -f abab::1111