From patchwork Mon Jul 8 17:48:53 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Garnier X-Patchwork-Id: 11035521 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1A8C9112C for ; Mon, 8 Jul 2019 17:49:27 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F004A28478 for ; Mon, 8 Jul 2019 17:49:26 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E011D283B0; Mon, 8 Jul 2019 17:49:26 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5AA3B283B0 for ; Mon, 8 Jul 2019 17:49:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730824AbfGHRtZ (ORCPT ); Mon, 8 Jul 2019 13:49:25 -0400 Received: from mail-pl1-f194.google.com ([209.85.214.194]:41201 "EHLO mail-pl1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726435AbfGHRtZ (ORCPT ); Mon, 8 Jul 2019 13:49:25 -0400 Received: by mail-pl1-f194.google.com with SMTP id m9so4969182pls.8 for ; Mon, 08 Jul 2019 10:49:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=u3wADtOhWERBIwfgOKqVInl3i4gu5vwcVNjYQ611JUc=; b=Cp2JMiqRMbHHc8yVRj5gwNVXKSXDh307ZJxdfhj5m5wZqxjCcjOB1cq6Hoydsv5OFo 14RVaNEV9QQ8pm4bi7zWlnTUgO/o0R9Nb9nSi+ekxv0wRSSnm/Ntf2nDLjSDt3fpc+ag If9clYeN+kLlkea7uIf7yLK5X+UGvuATfkHc4= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=u3wADtOhWERBIwfgOKqVInl3i4gu5vwcVNjYQ611JUc=; b=WNmrIC/qfE1R1m85K2r+ANrnDNpRYMMLTW3aWFCtafbCcVtDCnli4ZnO2M6pVse2sF Z+7ZUvwjUfZL23HSAbbRChWCql6nwQ2ZqxiTWZtruAWw4FUyCtyz2qmA6vY/B4JJbd1h 4HutTVPk15rnbCnT9CxN5b3dkUIcHrawxdaC2KBEIF+GpPYNe3loPtzUr2QeTPfMe43z MSDoBSfrgSIUjUnV3cg5/RNTk54NvPAa1s/HJXou9nHIUHYOPDCNCClSIzqEPD4cIxCS f/We5XfpiukfwKAYLBbWH/HS3KqWKzgPZUdTMfANkpAphL38FVMF8FD9ANEoyWzDoDI9 YDPQ== X-Gm-Message-State: APjAAAWawtmS8pjr4jWr6pJd/JsLigoly6bOYjWVPnHbYyPz4NWnWKkp qtGjy7fvwe/URtxrn5x5io93gQ== X-Google-Smtp-Source: APXvYqx5LipVNdbKqMBoKjNn4lRTatM0sZZZf8RlaGam+sYAQe4c/KcA1glvKLTNDdd17g2N+PzrMw== X-Received: by 2002:a17:902:6b02:: with SMTP id o2mr24590139plk.99.1562608164453; Mon, 08 Jul 2019 10:49:24 -0700 (PDT) Received: from skynet.sea.corp.google.com ([2620:0:1008:1100:c4b5:ec23:d87b:d6d3]) by smtp.gmail.com with ESMTPSA id j1sm20151686pfe.101.2019.07.08.10.49.23 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Mon, 08 Jul 2019 10:49:23 -0700 (PDT) From: Thomas Garnier To: kernel-hardening@lists.openwall.com Cc: kristen@linux.intel.com, keescook@chromium.org, Herbert Xu , "David S. Miller" , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H. Peter Anvin" , x86@kernel.org, Andy Lutomirski , Juergen Gross , Alok Kataria , "Rafael J. Wysocki" , Len Brown , Pavel Machek , Peter Zijlstra , Thomas Garnier , Nadav Amit , Jann Horn , Andrew Morton , Boris Ostrovsky , Feng Tang , Maran Wilson , Enrico Weigelt , Greg Kroah-Hartman , Alexios Zavras , linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-pm@vger.kernel.org Subject: [PATCH v8 00/11] x86: PIE support to extend KASLR randomization Date: Mon, 8 Jul 2019 10:48:53 -0700 Message-Id: <20190708174913.123308-1-thgarnie@chromium.org> X-Mailer: git-send-email 2.22.0.410.gd8fdbe21b5-goog MIME-Version: 1.0 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Splitting the previous serie in two. This part contains assembly code changes required for PIE but without any direct dependencies with the rest of the patchset. Changes: - patch v8 (assembly): - Fix issues in crypto changes (thanks to Eric Biggers). - Remove unnecessary jump table change. - Change author and signoff to chromium email address. - patch v7 (assembly): - Split patchset and reorder changes. - patch v6: - Rebase on latest changes in jump tables and crypto. - Fix wording on couple commits. - Revisit checkpatch warnings. - Moving to @chromium.org. - patch v5: - Adapt new crypto modules for PIE. - Improve per-cpu commit message. - Fix xen 32-bit build error with .quad. - Remove extra code for ftrace. - patch v4: - Simplify early boot by removing global variables. - Modify the mcount location script for __mcount_loc intead of the address read in the ftrace implementation. - Edit commit description to explain better where the kernel can be located. - Streamlined the testing done on each patch proposal. Always testing hibernation, suspend, ftrace and kprobe to ensure no regressions. - patch v3: - Update on message to describe longer term PIE goal. - Minor change on ftrace if condition. - Changed code using xchgq. - patch v2: - Adapt patch to work post KPTI and compiler changes - Redo all performance testing with latest configs and compilers - Simplify mov macro on PIE (MOVABS now) - Reduce GOT footprint - patch v1: - Simplify ftrace implementation. - Use gcc mstack-protector-guard-reg=%gs with PIE when possible. - rfc v3: - Use --emit-relocs instead of -pie to reduce dynamic relocation space on mapped memory. It also simplifies the relocation process. - Move the start the module section next to the kernel. Remove the need for -mcmodel=large on modules. Extends module space from 1 to 2G maximum. - Support for XEN PVH as 32-bit relocations can be ignored with --emit-relocs. - Support for GOT relocations previously done automatically with -pie. - Remove need for dynamic PLT in modules. - Support dymamic GOT for modules. - rfc v2: - Add support for global stack cookie while compiler default to fs without mcmodel=kernel - Change patch 7 to correctly jump out of the identity mapping on kexec load preserve. These patches make some of the changes necessary to build the kernel as Position Independent Executable (PIE) on x86_64. Another patchset will add the PIE option and larger architecture changes. The patches: - 1, 3-11: Change in assembly code to be PIE compliant. - 2: Add a new _ASM_MOVABS macro to fetch a symbol address generically. diffstat: crypto/aegis128-aesni-asm.S | 6 +- crypto/aegis128l-aesni-asm.S | 8 +-- crypto/aegis256-aesni-asm.S | 6 +- crypto/aes-x86_64-asm_64.S | 45 ++++++++++------ crypto/aesni-intel_asm.S | 8 +-- crypto/aesni-intel_avx-x86_64.S | 3 - crypto/camellia-aesni-avx-asm_64.S | 42 +++++++-------- crypto/camellia-aesni-avx2-asm_64.S | 44 ++++++++-------- crypto/camellia-x86_64-asm_64.S | 8 +-- crypto/cast5-avx-x86_64-asm_64.S | 50 ++++++++++-------- crypto/cast6-avx-x86_64-asm_64.S | 44 +++++++++------- crypto/des3_ede-asm_64.S | 96 ++++++++++++++++++++++++------------ crypto/ghash-clmulni-intel_asm.S | 4 - crypto/glue_helper-asm-avx.S | 4 - crypto/glue_helper-asm-avx2.S | 6 +- crypto/morus1280-avx2-asm.S | 4 - crypto/morus1280-sse2-asm.S | 8 +-- crypto/morus640-sse2-asm.S | 6 +- crypto/sha256-avx2-asm.S | 18 ++++-- entry/entry_64.S | 16 ++++-- include/asm/alternative.h | 6 +- include/asm/asm.h | 1 include/asm/paravirt_types.h | 25 +++++++-- include/asm/pm-trace.h | 2 include/asm/processor.h | 6 +- kernel/acpi/wakeup_64.S | 31 ++++++----- kernel/head_64.S | 16 +++--- kernel/relocate_kernel_64.S | 2 power/hibernate_asm_64.S | 4 - 29 files changed, 306 insertions(+), 213 deletions(-) Patchset is based on next-20190708.