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=-3.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 2AC96C04AAC for ; Mon, 20 May 2019 23:20:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CE1D42183F for ; Mon, 20 May 2019 23:20:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="eQRQDPc6" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727250AbfETXUC (ORCPT ); Mon, 20 May 2019 19:20:02 -0400 Received: from mail-pg1-f194.google.com ([209.85.215.194]:35734 "EHLO mail-pg1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726357AbfETXUC (ORCPT ); Mon, 20 May 2019 19:20:02 -0400 Received: by mail-pg1-f194.google.com with SMTP id t1so6090886pgc.2 for ; Mon, 20 May 2019 16:20:01 -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=ziH51J2YkDxbiEVM2GrMAlpVSd+QVOkC6hl+iSpS1bQ=; b=eQRQDPc6uBU2Qk0F/htZOfYUHATfTVBNkYwDN/tGGT85UVF+0kNNU6JxQEi80X2jLd nOecMr02fvsUklEjSkgaRZyFW8oTUFJ0vBMXfd8I0clvZdaInAdo9I3e++bv+isAWIAS SbVUWwQ2uCxdPrlrZR8tJJBmOkDwJZLP5OV3E= 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=ziH51J2YkDxbiEVM2GrMAlpVSd+QVOkC6hl+iSpS1bQ=; b=QDaEyaPGpn6DpZHBVwVnbTs+oEgKC9qjpdpAkDoPvaMHqaFd3hq+qiYrGqxJSOgAzU btb8oghH5nz3twB3KFHXadNHL1K6qqg4fYLyTiLzVpzpUkNeGdnL/U+5ZnIS62uh/r88 Z2UTLzLY1VSJ/VcxeQ3YtqH53P9zfd2x9n5+h+H6+KJo+Uf4nygKGUpFbWgSbYTZwLTh D+MDCaVXdIcHbu5vTBmTBZ8v07eJ5H+KCf+RymCbbxR4ldO8HrjmMA8A3fRfwOWCv1M4 EFcFLfxB8s4xycE900K/nIYse0xZOHeDF5usM28filS4bUBQB72JKXcfU0dAHspJqj+7 xUgw== X-Gm-Message-State: APjAAAWXrFv0hDcf7ciBjR+5vfuoN02ioAvrIJT/4DjXKu8TKen4YGW8 PRzsa1f1zOUypipXXjWu6bdbqA== X-Google-Smtp-Source: APXvYqyF4jfnvmglKBHVKthuceEzZGxOmZsOsky8xSLS2H68VewsiuHrWgBWYJrlDb7GE/qEMLwOnw== X-Received: by 2002:a63:317:: with SMTP id 23mr78257345pgd.414.1558394401009; Mon, 20 May 2019 16:20:01 -0700 (PDT) Received: from skynet.sea.corp.google.com ([2620:0:1008:1100:c4b5:ec23:d87b:d6d3]) by smtp.gmail.com with ESMTPSA id h13sm19350861pgk.55.2019.05.20.16.19.59 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 20 May 2019 16:20:00 -0700 (PDT) From: Thomas Garnier To: kernel-hardening@lists.openwall.com Cc: kristen@linux.intel.com, 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 , Ard Biesheuvel , Masahiro Yamada , Andi Kleen , Andrew Morton , Feng Tang , Jan Beulich , Maran Wilson , linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-pm@vger.kernel.org Subject: [PATCH v7 00/12] x86: PIE support to extend KASLR randomization Date: Mon, 20 May 2019 16:19:25 -0700 Message-Id: <20190520231948.49693-1-thgarnie@chromium.org> X-Mailer: git-send-email 2.21.0.1020.gf2820cf01a-goog MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 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: - 1-2, 4-12: Change in assembly code to be PIE compliant. - 3: 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/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 | 23 +++++--- entry/entry_64.S | 16 ++++-- include/asm/alternative.h | 6 +- include/asm/asm.h | 1 include/asm/jump_label.h | 8 +-- include/asm/paravirt_types.h | 12 +++- 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, 299 insertions(+), 217 deletions(-) Patchset is based on next-20190515.