From patchwork Mon Nov 1 16:20:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kees Cook X-Patchwork-Id: 12596609 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C9B27C433FE for ; Mon, 1 Nov 2021 16:20:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AE51761165 for ; Mon, 1 Nov 2021 16:20:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232693AbhKAQXa (ORCPT ); Mon, 1 Nov 2021 12:23:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53568 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232711AbhKAQX3 (ORCPT ); Mon, 1 Nov 2021 12:23:29 -0400 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 73DFAC061767 for ; Mon, 1 Nov 2021 09:20:54 -0700 (PDT) Received: by mail-pj1-x102b.google.com with SMTP id fv9-20020a17090b0e8900b001a6a5ab1392so355777pjb.1 for ; Mon, 01 Nov 2021 09:20:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=date:from:to:cc:subject:message-id:mime-version:content-disposition; bh=nOeoZHECPKNnAQytROjQG/8KfDcG2slvfmEJKCwImrQ=; b=OHjfuxxdfClfMEvZDiRQncM/tj04Oc4zKUcJsre2fgbrUibg0OrOYtxJvVFbiYWF/V QV1/1BkSOuYAiHB/7n6GnABT8PtXMjdF0q/3kN7tXSbbW0ibOXOrXBZIBg62Du0E12fR r2TOG2W15LOqdfoteLKwfqdg6gxPX1atPhYAw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition; bh=nOeoZHECPKNnAQytROjQG/8KfDcG2slvfmEJKCwImrQ=; b=mg9jvsLhmzNCIaO1CA4fsdKtvBdWXmagYld2JovrWycz4aO0xdUPqYstvXK8wYJWGp DQdP4p1NScQk4J46E2hoLWMtEGCE4aNm2AnwQBYFhHhbpw8l2nzgG1GrJj3SIr0L0QHH gHTTxFnX/HmGGM+Ce3K5UoV1hJ0Joi2Cb7J6UmoJKlW5QR+Wec66wC9dQKXCsA+Qqa++ x6AK8Y1kYof4k1OK5KNLqZcv/CbQ91iEWWRFiWztWMm+J8cWeGjtyDax0ZJc/E3pP8dJ pSgBpqSsh9p65MHchly3GDJ79y1WaN0sAMT/2X4gkYpms12HZNbMnNZOBKvIcCbkq5ex rOTQ== X-Gm-Message-State: AOAM531BMsPV1BuKGKzfrfswVDjxRdanUGvjHoPthrUlUbTx86bN3MdL JWiHdQkb436Pmgosmvv5zkxAPWyPZdniPw== X-Google-Smtp-Source: ABdhPJx8302mlq2+2oG33p1FJwabY8ZQ+cEyzVsGqRt9mxOuWC/f5cg60TkG3G0h376S22Pc08/BlA== X-Received: by 2002:a17:902:70c5:b0:13f:f941:9ad6 with SMTP id l5-20020a17090270c500b0013ff9419ad6mr26059732plt.28.1635783653857; Mon, 01 Nov 2021 09:20:53 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id p23sm18296772pjg.55.2021.11.01.09.20.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Nov 2021 09:20:53 -0700 (PDT) Date: Mon, 1 Nov 2021 09:20:52 -0700 From: Kees Cook To: Linus Torvalds Cc: linux-kernel@vger.kernel.org, Ard Biesheuvel , Fangrui Song , Greg Kroah-Hartman , James Morris , Jonathan Corbet , Kees Cook , "KE.LI" , linux-doc@vger.kernel.org, linux-hardening@vger.kernel.org, linux-kbuild@vger.kernel.org, linux-security-module@vger.kernel.org, llvm@lists.linux.dev, Masahiro Yamada , Michal Marek , Miguel Ojeda , Nathan Chancellor , Nick Desaulniers , Padmanabha Srinivasaiah , Sami Tolvanen , "Serge E. Hallyn" , Will Deacon , Ye Guojin , Zeal Robot Subject: [GIT PULL] hardening updates for v5.16-rc1 Message-ID: <202111010917.75B96F4E@keescook> MIME-Version: 1.0 Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org Hi Linus, Please pull these hardening updates for v5.16-rc1. These are various compiler-related hardening feature updates. Notable is the addition of an explicit limited rationale for, and deprecation schedule of, gcc-plugins. More details in the tag below. Thanks! -Kees The following changes since commit e4e737bb5c170df6135a127739a9e6148ee3da82: Linux 5.15-rc2 (2021-09-19 17:28:22 -0700) are available in the Git repository at: https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git tags/hardening-v5.16-rc1 for you to fetch changes up to 6425392acf24b6d469932dd1b217dc7b20d6447f: gcc-plugins: remove duplicate include in gcc-common.h (2021-10-21 08:41:51 -0700) ---------------------------------------------------------------- compiler hardening updates for v5.16-rc1 This collects various compiler hardening feature related updates: - gcc-plugins: - remove support for GCC 4.9 and older (Ard Biesheuvel) - remove duplicate include in gcc-common.h (Ye Guojin) - Explicitly document purpose and deprecation schedule (Kees Cook) - Remove cyc_complexity (Kees Cook) - instrumentation: - Avoid harmless Clang option under CONFIG_INIT_STACK_ALL_ZERO (Kees Cook) - Clang LTO: - kallsyms: strip LTO suffixes from static functions (Nick Desaulniers) ---------------------------------------------------------------- Ard Biesheuvel (1): gcc-plugins: remove support for GCC 4.9 and older Kees Cook (3): hardening: Avoid harmless Clang option under CONFIG_INIT_STACK_ALL_ZERO gcc-plugins: Explicitly document purpose and deprecation schedule gcc-plugins: Remove cyc_complexity Nick Desaulniers (1): kallsyms: strip LTO suffixes from static functions Ye Guojin (1): gcc-plugins: remove duplicate include in gcc-common.h Documentation/kbuild/gcc-plugins.rst | 28 ++++- Makefile | 6 +- kernel/kallsyms.c | 46 +++++-- scripts/Makefile.gcc-plugins | 2 - scripts/gcc-plugins/Kconfig | 20 +--- scripts/gcc-plugins/cyc_complexity_plugin.c | 69 ----------- scripts/gcc-plugins/gcc-common.h | 132 +-------------------- scripts/gcc-plugins/gcc-generate-gimple-pass.h | 19 --- scripts/gcc-plugins/gcc-generate-ipa-pass.h | 19 --- scripts/gcc-plugins/gcc-generate-rtl-pass.h | 19 --- scripts/gcc-plugins/gcc-generate-simple_ipa-pass.h | 19 --- scripts/gcc-plugins/structleak_plugin.c | 2 - security/Kconfig.hardening | 14 ++- 13 files changed, 75 insertions(+), 320 deletions(-) delete mode 100644 scripts/gcc-plugins/cyc_complexity_plugin.c