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=-2.2 required=3.0 tests=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 275DDC432C0 for ; Tue, 3 Dec 2019 10:09:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F347E206DF for ; Tue, 3 Dec 2019 10:09:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726195AbfLCKJ1 (ORCPT ); Tue, 3 Dec 2019 05:09:27 -0500 Received: from metis.ext.pengutronix.de ([85.220.165.71]:54065 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725774AbfLCKJZ (ORCPT ); Tue, 3 Dec 2019 05:09:25 -0500 Received: from gallifrey.ext.pengutronix.de ([2001:67c:670:201:5054:ff:fe8d:eefb] helo=bjornoya.blackshift.org) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1ic57Q-0005rk-2Z; Tue, 03 Dec 2019 11:09:20 +0100 Received: from [IPv6:2a03:f580:87bc:d400:858e:130c:14c0:366e] (unknown [IPv6:2a03:f580:87bc:d400:858e:130c:14c0:366e]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits)) (Client CN "mkl@blackshift.org", Issuer "StartCom Class 1 Client CA" (not verified)) (Authenticated sender: mkl@blackshift.org) by smtp.blackshift.org (Postfix) with ESMTPSA id D05E34873ED; Tue, 3 Dec 2019 10:09:17 +0000 (UTC) Subject: Re: KMSAN: uninit-value in can_receive To: Oliver Hartkopp , Eric Dumazet , syzbot , davem@davemloft.net, glider@google.com, linux-can@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com References: <0000000000005c08d10597a3a05d@google.com> <7934bc2b-597f-0bb3-be2d-32f3b07b4de9@hartkopp.net> <7f5c4546-0c1a-86ae-581e-0203b5fca446@pengutronix.de> <1f7d6ea7-152e-ff18-549c-b196d8b5e3a7@hartkopp.net> <9e06266a-67f3-7352-7b87-2b9144c7c9a9@gmail.com> <3142c032-e46a-531c-d1b8-d532e5b403a6@hartkopp.net> <92c04159-b83a-3e33-91da-25a727a692d0@gmail.com> From: Marc Kleine-Budde Openpgp: preference=signencrypt Autocrypt: addr=mkl@pengutronix.de; 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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="f2B7MSGQBQp6YbVQWJU9Lrw0rJtRR0jeS" X-SA-Exim-Connect-IP: 2001:67c:670:201:5054:ff:fe8d:eefb X-SA-Exim-Mail-From: mkl@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: netdev@vger.kernel.org Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --f2B7MSGQBQp6YbVQWJU9Lrw0rJtRR0jeS Content-Type: multipart/mixed; boundary="At7nxJr8wb5hZye1lmWJKyOb0UJhSIXOC"; protected-headers="v1" From: Marc Kleine-Budde To: Oliver Hartkopp , Eric Dumazet , syzbot , davem@davemloft.net, glider@google.com, linux-can@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Message-ID: <0f395f1e-b7d4-6254-2a0c-54029b4dc38f@pengutronix.de> Subject: Re: KMSAN: uninit-value in can_receive References: <0000000000005c08d10597a3a05d@google.com> <7934bc2b-597f-0bb3-be2d-32f3b07b4de9@hartkopp.net> <7f5c4546-0c1a-86ae-581e-0203b5fca446@pengutronix.de> <1f7d6ea7-152e-ff18-549c-b196d8b5e3a7@hartkopp.net> <9e06266a-67f3-7352-7b87-2b9144c7c9a9@gmail.com> <3142c032-e46a-531c-d1b8-d532e5b403a6@hartkopp.net> <92c04159-b83a-3e33-91da-25a727a692d0@gmail.com> In-Reply-To: --At7nxJr8wb5hZye1lmWJKyOb0UJhSIXOC Content-Type: text/plain; charset=utf-8 Content-Language: de-DE Content-Transfer-Encoding: quoted-printable On 11/20/19 9:10 PM, Oliver Hartkopp wrote: [...] > So the KMSAN detection was right at the end :-( >=20 > I'll take a closer look to enable PF_PACKET to send CAN frames again=20 > which will fix up the entire problem. I'm going to send a pull request today. Do you already have a fix for thi= s? regards, Marc --=20 Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung West/Dortmund | Phone: +49-231-2826-924 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | --At7nxJr8wb5hZye1lmWJKyOb0UJhSIXOC-- --f2B7MSGQBQp6YbVQWJU9Lrw0rJtRR0jeS Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCgAdFiEEmvEkXzgOfc881GuFWsYho5HknSAFAl3mNEgACgkQWsYho5Hk nSDJXQf/fIq/7xN90kzcb37GjA+786hSOo75BmT1hys0AlmwhGfVDAnykpN8yOUS PXouEyLei42dgV3ISBtk3DBPv25P0asIaYe2OD9vyO7dxlZYb4QNe83+kDp7AQis wzXpTbjhdB/5IVcdDvk/d3NdTVdfADhZ2yvjp5n7ucJ4TtjVk8TbL9X3f1YW/lP/ 5i63Obt/apof1I9B9W9hx0ZbGJBnOpH5CGxJ+QgBERExoXUye/pKlfwe2UET0Miv /ASxLiHH+sR/sdNu7ItHn5eWAGZOpncAZJk2T6Lelc/77u3IeZaBtHXb0hQa946q WgYezs+opZzcLMl7nYbKJKl8kr6NMg== =y804 -----END PGP SIGNATURE----- --f2B7MSGQBQp6YbVQWJU9Lrw0rJtRR0jeS--