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=-7.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,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 7BBB5C433F5 for ; Mon, 6 Sep 2021 11:44:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 679CC61004 for ; Mon, 6 Sep 2021 11:44:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233158AbhIFLpb (ORCPT ); Mon, 6 Sep 2021 07:45:31 -0400 Received: from mail.kernel.org ([198.145.29.99]:45808 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231173AbhIFLpa (ORCPT ); Mon, 6 Sep 2021 07:45:30 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 97A8B6056B; Mon, 6 Sep 2021 11:44:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1630928666; bh=hC5aPFrcJXwbmvjAje6ve3g5ksRe+uHuix3L09NNEV4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ewzHkc4zSgJrADj9ahsPtGZXlDqwdosotrGK6DuC6g/5wIXWEKEQQTI82xGltsPTd pbgrEDuzgEtQ8WI8HPYdVOePN3gzLU2p2ybimTzHXJXnE014KyeTMddocnCBpFIjZR FISq63FVHNtirACoFmUzRZZQ4Zq9FHg98XPETfJCLx0KVa0xgSBbASBnkB7SES6Rzx HRk4ChefTDblw9H+ks76yYSeyvAcl6JL7K/8Q/PkomXnkxFRtHahD8kYEWE7HTdICs oIbJJqhZSf4YYndt82K73QEfdSzLn0+aFimgi5R7L6Z9B4Z3VZRncX5o1z00mgl0Vd RVDqTqYwNoENw== Date: Mon, 6 Sep 2021 12:43:50 +0100 From: Mark Brown To: Kees Cook Cc: Linus Torvalds , Linux Kernel Mailing List , Arnd Bergmann , Daniel Vetter , Dan Williams , Rasmus Villemoes , Greg Kroah-Hartman , "Gustavo A. R. Silva" , Keith Packard , Nathan Chancellor , Nick Desaulniers , linux-hardening@vger.kernel.org Subject: Re: [GIT PULL] overflow updates for v5.15-rc1 Message-ID: <20210906114350.GB4309@sirena.org.uk> References: <202109022012.756B6B5B79@keescook> <45312958-B844-4B4C-9808-8205866675A1@chromium.org> <202109051123.11E4E31@keescook> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="XOIedfhf+7KOe/yw" Content-Disposition: inline In-Reply-To: <202109051123.11E4E31@keescook> X-Cookie: I smell a RANCID CORN DOG! User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-hardening@vger.kernel.org --XOIedfhf+7KOe/yw Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Sun, Sep 05, 2021 at 11:31:44AM -0700, Kees Cook wrote: > On Sun, Sep 05, 2021 at 10:36:22AM -0700, Linus Torvalds wrote: > > > Yeech. Yeah, no, that was not expected at all. I even did test merge builds against your latest tree before sending the Pull Request. This has been in -next for weeks, too. > > Sadly, I don't think linux-next checks for warnings. > Oh, I thought I'd gotten such reports from sfr before, but certainly the > 0day bot and others have yelled loudly about new warnings (from earlier > iterations of this series in -next). Yes, Stephen will report new warnings in the configs he tested and there's a bunch of people who like to go around fixing warnings whenever they do appear though only in the more common configurations. > > > What was the build environment? > > This is actually just bog-standard gcc-11.2 from F34, and an allmodconfig build. > Ah, fun. Yeah, I'm behind on versions, it seems. Default gcc version on > latest stable Ubuntu release is 10.3. I will go retest on the devel > release. If you're looking for coverage on this stuff it's also good to check with clang as well, it's sufficiently different that it often triggers extra stuff (eg, turning on -Werror broke i386 allmodconfig for clang-10 since that triggers some stack frame size warnings which are now errors). --XOIedfhf+7KOe/yw Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmE1/vUACgkQJNaLcl1U h9Cf2Qf/XxqoOJVy17BQ8WlyOMfwUSZl8yxck50R61Fkj3TDtAnU89NtCmKleen1 u8ReMG75E0DjgKcwZ9SkQoMf0gUdplD+kKsvTAGvM2PvNGsUsnIt/ga97LuLztNz 3e1J1s7mcEqSiwg10dukT/Qw4YuaMdA5GCuLcUYkROJY65q+du9ACRJeeH3i5+US Bfw8MBbdAzJ/iEhRdFT32BqJ3FFNDhdk+cVZL12ZO9K8YDu/LJZJqzgeJ/t1/9Bb F6CvE6YWL6PoqnHNxjL7lfVvLbP9IIcrurXgwozU2Od4M8CxcRWR8mGmSf59xlD7 k2hzt8WrX47o/PZaUHcj8HV8yTJfqQ== =fxh3 -----END PGP SIGNATURE----- --XOIedfhf+7KOe/yw--