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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 E021CC433DB for ; Fri, 8 Jan 2021 00:52:48 +0000 (UTC) Received: from lists.zx2c4.com (lists.zx2c4.com [165.227.139.114]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CC95E23447 for ; Fri, 8 Jan 2021 00:52:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CC95E23447 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=ericlight.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=wireguard-bounces@lists.zx2c4.com Received: by lists.zx2c4.com (ZX2C4 Mail Server) with ESMTP id 0befadf2; Fri, 8 Jan 2021 00:51:00 +0000 (UTC) Received: from out5-smtp.messagingengine.com (out5-smtp.messagingengine.com [66.111.4.29]) by lists.zx2c4.com (ZX2C4 Mail Server) with ESMTPS id e8dcc7c7 (TLSv1.2:ECDHE-ECDSA-AES256-GCM-SHA384:256:NO) for ; Fri, 8 Jan 2021 00:50:58 +0000 (UTC) Received: from compute6.internal (compute6.nyi.internal [10.202.2.46]) by mailout.nyi.internal (Postfix) with ESMTP id 33B8D5C021D for ; Thu, 7 Jan 2021 19:50:57 -0500 (EST) Received: from imap7 ([10.202.2.57]) by compute6.internal (MEProxy); Thu, 07 Jan 2021 19:50:57 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ericlight.com; h=mime-version:message-id:in-reply-to:references:date:from:to :subject:content-type:content-transfer-encoding; s=fm1; bh=iD0Iw ENELno5LKaDWMBJg/P2WjlVM0OuYJQ+m9VGaBY=; b=Xv6GgoeQ1I6TCQavIAouT +e35bAYRmyrrBB7Bq4rQKwN3cd3zvzq7Dnv4Q5zUE/DH4JDkAz3ecNtkVXBnLEJX TaVNq2FbAe/7fugIJwvhFM5FQAn2I8Ha9pfqPLKK+rq8GyEUqVGzynfet2pshoxP oevHgMkAmpDbAv6P/3eReOHrYq2Pb7J0BGyFzI6FIiuZYx2XmswUYmpl5k0kCjVt jz8qIxppZw0Ci5JlXySrtVgee3dkHkEk/FbiWHTngu2zd43+Yt7SEvP6rToEwPw2 6I64OFysoPqDUPYjrbhOpIODQ2yQe+raGvhsGiRmjtbHnQHcgDXrlGS1wcl58Ucb A== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender :x-sasl-enc; s=fm1; bh=iD0IwENELno5LKaDWMBJg/P2WjlVM0OuYJQ+m9VGa BY=; b=o3weXm9DwUl5NozcVx1k+Jrb78mBcPA0gC6eehSXa1twdCge0NmMbwpFL 6QHUt83d0XCzu7hbV1rEsTiLZFAzF6zqlw3ZCX4FPxkESmBGMJHyWCq14m/Lq1EZ MxmGMkxqPC+zNjbP18etQ1qG6B/ErCgcZAJkfCs3LhWozj5hOq4hFI982pmyBtwo r/yMDgVkJ6MaCachUxQevS2q6gJuoi2uCXZ/FtxKQVjj2ONYGZFYjRcU89zIg2Gq YUXmAEbe99PzagWQEGaEiXTDMfjPilI4DbmB5Yk70YCeD+X3662BSFwr0N6EzI8W GIToh2xMCuN23IItjCIMncTFZPo2Q== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedujedrvdegfedgheehucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhepofgfggfkjghffffhvffutgfgsehtqhertderreejnecuhfhrohhmpedfgfhr ihgtucfnihhghhhtfdcuoegvrhhitgesvghrihgtlhhighhhthdrtghomheqnecuggftrf grthhtvghrnhepgeehtdelvdetueekgfekkeeiffeugfffteekueejvdegffejffdthedv heelueehnecuffhomhgrihhnpehsvghnthgvnhgtrdgvshdptghuuggrshhvtgdrtghomh dpiiigvdgtgedrtghomhdpshihiihkrghllhgvrhdrrghpphhsphhothdrtghomhdpphhh ohhrohhnihigrdgtohhmnecuvehluhhsthgvrhfuihiivgepudenucfrrghrrghmpehmrg hilhhfrhhomhepvghrihgtsegvrhhitghlihhghhhtrdgtohhm X-ME-Proxy: Received: by mailuser.nyi.internal (Postfix, from userid 501) id DCC011800A8; Thu, 7 Jan 2021 19:50:56 -0500 (EST) X-Mailer: MessagingEngine.com Webmail Interface User-Agent: Cyrus-JMAP/3.3.1-61-gb52c239-fm-20201210.001-gb52c2396 Mime-Version: 1.0 Message-Id: <3171d75d-f4a8-40df-9208-5b40f732dfea@www.fastmail.com> In-Reply-To: References: <000000000000e13e2905b6e830bb@google.com> <0029bece-0f7e-4467-948d-b48af50e5bca@www.fastmail.com> Date: Fri, 08 Jan 2021 13:50:36 +1300 From: "Eric Light" To: "WireGuard mailing list" Subject: Re: UBSAN: object-size-mismatch in wg_xmit Content-Type: text/plain;charset=utf-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: wireguard@lists.zx2c4.com X-Mailman-Version: 2.1.30rc1 Precedence: list List-Id: Development discussion of WireGuard List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: wireguard-bounces@lists.zx2c4.com Sender: "WireGuard" @List - I'll reach out to Corey directly and try to help. Sorry for the= noise. E -------------------------------------------- Q: Why is this email five sentences or less? A: http://five.sentenc.es On Fri, 8 Jan 2021, at 13:44, Corey Costello wrote: > Yeah, it doesn=E2=80=99t work for me :(=20 >=20 > > On Jan 7, 2021, at 7:42 PM, Eric Light wrote: > >=20 > > Corey - have you tried unsubscribing at the unsubscribe page? https= ://linkprotect.cudasvc.com/url?a=3Dhttps%3a%2f%2flists.zx2c4.com%2fmailm= an%2foptions%2fwireguard&c=3DE,1,Axa-ElbX0arA0gS27knqMcMnUXikmpGux0uV7Gv= 66JniMpXRVVtWNeYE8mu17nQawpfQEodteBfH9tq43ronGkmm07T_Tq9urTmtYLTTK8YwFg,= ,&typo=3D1 > >=20 > > Hope this helps, > >=20 > > E > >=20 > > -------------------------------------------- > > Q: Why is this email five sentences or less? > > A: https://linkprotect.cudasvc.com/url?a=3Dhttp%3a%2f%2ffive.sentenc= .es&c=3DE,1,L28_oBFr0CKAXDsG0BiDkDDhOYaG4FoH7vdeaKoqnsVwn14kiz9J_PpjMZAo= Itr_wdFvmWS4wAI7qDgBPljT8qxgdAwCA9Vy54M3bcq8nJBKnA11GFTTG6BEv04,&typo=3D= 1 > >=20 > > On Fri, 8 Jan 2021, at 13:34, Corey Costello wrote: > >> Get me off this fucking list ffs. > >>=20 > >>=20 > >>=20 > >>> On Jan 7, 2021, at 2:06 PM, Jeffrey Walton wr= ote: > >>>=20 > >>> On Thu, Jan 7, 2021 at 2:03 PM Jason A. Donenfeld wrote: > >>>>=20 > >>>> On Thu, Jan 7, 2021 at 1:22 PM Dmitry Vyukov = wrote: > >>>>>=20 > >>>>> On Mon, Dec 21, 2020 at 12:23 PM Jason A. Donenfeld wrote: > >>>>>>=20 > >>>>>> ... > >>>>>=20 > >>>>> These UBSAN checks were just enabled recently. > >>>>> It's indeed super easy to trigger: 133083 VMs were crashed on th= is already: > >>>>> https://linkprotect.cudasvc.com/url?a=3Dhttps%3a%2f%2fsyzkaller.= appspot.com%2fbug%3fextid%3d8f90d005ab2d22342b6d&c=3DE,1,RVpgZsRUCGs2jKl= umiMAMnpeOF4QdiW5h8GDIsBJPz-orFNwvwCXnceC9n5Bhr1h-G2EsU0tlC7N4QUpHuF6tIM= I7tTnBoRjAo5tT-Bk9-Fhe8CppuOL4mqdkA,,&typo=3D1 > >>>>> So it's one of the top crashers by now. > >>>>=20 > >>>> Ahh, makes sense. So it is easily reproducible after all. > >>>>=20 > >>>> You're still of the opinion that it's a false positive, right? I > >>>> shouldn't spend more cycles on this? > >>>=20 > >>> You might consider making a test build with -fno-lto in case LTO i= s > >>> mucking things up. > >>>=20 > >>> Google Posts Patches So The Linux Kernel Can Be LTO-Optimized By > >>> Clang, https://linkprotect.cudasvc.com/url?a=3Dhttps%3a%2f%2fwww.p= horonix.com%2fscan.php%3fpage%3dnews_item%26px%3dLinux-Kernel-Clang-LTO-= Patches&c=3DE,1,7u3-jWadklYo8ai_XrPNvjnu46LLAyg0hqsGIaMPaoQ5UxtcNM84jrHU= gSg4VciXKk9XVpwgyBwD85LbbW5_j195jSH6RrAej45I1kr_XfQ,&typo=3D1 > >>>=20 > >>> Jeff > >>=20 > >>=20 >=20 >