From mboxrd@z Thu Jan 1 00:00:00 1970 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=-2.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 A1887C43603 for ; Wed, 4 Dec 2019 14:34:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 77FE22073C for ; Wed, 4 Dec 2019 14:34:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="aB2G8w9i" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728048AbfLDOeV (ORCPT ); Wed, 4 Dec 2019 09:34:21 -0500 Received: from us-smtp-1.mimecast.com ([205.139.110.61]:49630 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727867AbfLDOeV (ORCPT ); Wed, 4 Dec 2019 09:34:21 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1575470060; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Mk6kH1hrBfI30rN/qWP90ibSmIBKwHNx6LbIwV0P+6o=; b=aB2G8w9i/ueZ8itV18wcCU1UOlvVX48p+m7uErRM1lofwPciF3SwnO44h6ZaVNTNZ0Pcmc Tsacz5n6x4BAaYnta/YKWyp+vSbB+XLrniwrjzQTCBkuEcrMmy8ifB4Nnkp+upYmVVVFjA kM1w5l1eRntFgdg0sUquSI/Lripr32w= Received: from mail-wm1-f72.google.com (mail-wm1-f72.google.com [209.85.128.72]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-334-kBMlleM3NP6pCU5ioJtsOw-1; Wed, 04 Dec 2019 09:34:18 -0500 Received: by mail-wm1-f72.google.com with SMTP id v8so2264921wml.4 for ; Wed, 04 Dec 2019 06:34:18 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=3fSpOmCmX5dHOVhu+rXkU7ZnFijnP9eH/etXf1iQhw0=; b=ooS52vK/LvVYqooAjm14xSpsX1QJe7uXdW1TSk87eTm9Z+gk6WZsPyFmvO5Fwk/mdm 3dOcu5F8S91qbnNmtHbPCzehQTnTAhDQPAtMzI7c9vV4jgiCR5w+0oi/BNzqWcczta7U Z3smLVV3zjYtD3zNNPIOPnYzGOVlNUoBElluCr+Spuy1mq6UlswhHM9RlJZuDsLs4QPc OM/5jayt9UaGJED/koWjrkmJGijYjhHkwyagHUqjgqmJSfBCJjVofQGiQv6+nwYNkYcz Ajm2cYyWsxqljNzk4nYluouSZiE6Xfv8Mczk1wyl/STTuqlSCVLkoKyuGKSySqTISEwy zfnQ== X-Gm-Message-State: APjAAAUUvzM+KEWVW7/9Ph2zuMepUPDobZp+XY8sx/BVau85247eR3SA Jz95jpxlLhxlDCIYDn22w8ixYHU/VfpMuKeu/68qr4G+/EvxDMWtnF4C5x16hr5ZGBl1EfB5ptL 7Bsw0irWj26GTaCeD X-Received: by 2002:a05:600c:224d:: with SMTP id a13mr7808511wmm.57.1575470057538; Wed, 04 Dec 2019 06:34:17 -0800 (PST) X-Google-Smtp-Source: APXvYqztrMqtygceCIJ/mpmpHOSprnkgWbjd4MJh4PGOIX2aolJ19K19vLDChPBOznCRdBOYlJXycw== X-Received: by 2002:a05:600c:224d:: with SMTP id a13mr7808493wmm.57.1575470057376; Wed, 04 Dec 2019 06:34:17 -0800 (PST) Received: from linux.home (2a01cb0585290000c08fcfaf4969c46f.ipv6.abo.wanadoo.fr. [2a01:cb05:8529:0:c08f:cfaf:4969:c46f]) by smtp.gmail.com with ESMTPSA id c1sm8333663wrs.24.2019.12.04.06.34.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Dec 2019 06:34:16 -0800 (PST) Date: Wed, 4 Dec 2019 15:34:14 +0100 From: Guillaume Nault To: Eric Dumazet Cc: Eric Dumazet , David Miller , Jakub Kicinski , netdev , Arnd Bergmann Subject: Re: [PATCH net] tcp: Avoid time_after32() underflow when handling syncookies Message-ID: <20191204143414.GA2358@linux.home> References: <2601e43617d707a28f60f2fe6927b1aaaa0a37f8.1574976866.git.gnault@redhat.com> <20191202215143.GA13231@linux.home> <20191204004654.GA22999@linux.home> MIME-Version: 1.0 In-Reply-To: User-Agent: Mutt/1.12.1 (2019-06-15) X-MC-Unique: kBMlleM3NP6pCU5ioJtsOw-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Tue, Dec 03, 2019 at 06:20:24PM -0800, Eric Dumazet wrote: >=20 > Sorry I am completely lost with this amount of text. >=20 No problem. I'll write a v2 and remork the problem description to make it clearer. > Whatever solution you come up with, make sure it covers all the points > that have been raised. >=20 Will do. Thanks.