From patchwork Tue Jul 30 19:12:44 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Garnier X-Patchwork-Id: 11066613 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 AAEE713A0 for ; Tue, 30 Jul 2019 19:13:24 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A37992857E for ; Tue, 30 Jul 2019 19:13:24 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9778D28872; Tue, 30 Jul 2019 19:13:24 +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=-5.3 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.wl.linuxfoundation.org (Postfix) with SMTP id 798D42857E for ; Tue, 30 Jul 2019 19:13:23 +0000 (UTC) Received: (qmail 26560 invoked by uid 550); 30 Jul 2019 19:13:21 -0000 Mailing-List: contact kernel-hardening-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Delivered-To: mailing list kernel-hardening@lists.openwall.com Received: (qmail 26529 invoked from network); 30 Jul 2019 19:13:20 -0000 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=PQpQB1xhGd1BWNwCOVPVq65dOaaamVfa0p9XxE9K8UE=; b=UeEkx54frGpuY2a5hI6uujVV6CP+NOOrqZjevpUoKoJ93cmYNk/k3rMiq3AadGoCKK 4u7ZW5L9P5D/w1F6ZopTCab2PdKgv5sovzVTiDlesGwqHNwk1iQ59Z1CIqJUVPimrjCH 2d2E01pLBsNwq9CrfIuERHJQKh4JgFunTybsQ= 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=PQpQB1xhGd1BWNwCOVPVq65dOaaamVfa0p9XxE9K8UE=; b=q5BmOUzLE+nAQSbyU5thL5Eo+MVGtepxpsh+GABUXgmr1Fbeyni8DqmxaTYzDcJ6ip GO7WDGCa6xD5FHreUtkIgOG79WmpFwK6tgUoNalF95Z9043kag1pv1N1u4/OtmVyIaKp dEgJ3d3CxjjkQNs5IxywIFg28F5kNyaIYj4S60yin0E8YKO4YCpFzBtptT3QV9bb8g6Y NnV1EdXpQPV8PBSzqLPqTpBCNWCbAJ1hP7RzJ1It0C/m3w8NuaotQfS9Hf/LoM7BwZIH ncBhIT1qIQE2GLQjn0KjQZfCFDBEpl+v/sfCjgg3tS+HYcUyUAr2V2wB2k0ZRQIqRxA/ afsg== X-Gm-Message-State: APjAAAXzMdaoAS09bU3Tc9AiBh1hxiTQnVndX8b6aFLiIMdaDRTTAVbg WTgiE9lwBllcPnESzGuUSxHMzWCJErk= X-Google-Smtp-Source: APXvYqwcn2k0Dv3q6ck7IZ44pYsx+KVg4rymizIuUGPzamZY74Xu3UwxOdhjJWwI8/DCuTdbmMo2qQ== X-Received: by 2002:a63:8a49:: with SMTP id y70mr15370050pgd.271.1564513988658; Tue, 30 Jul 2019 12:13:08 -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 , Thomas Hellstrom , "VMware, Inc." , "Rafael J. Wysocki" , Len Brown , Pavel Machek , Peter Zijlstra , Nadav Amit , Thomas Garnier , Jann Horn , Feng Tang , Maran Wilson , Enrico Weigelt , Allison Randal , Alexios Zavras , linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-pm@vger.kernel.org Subject: [PATCH v9 00/11] x86: PIE support to extend KASLR randomization Date: Tue, 30 Jul 2019 12:12:44 -0700 Message-Id: <20190730191303.206365-1-thgarnie@chromium.org> X-Mailer: git-send-email 2.22.0.770.g0f2c4a37fd-goog MIME-Version: 1.0 X-Virus-Scanned: ClamAV using ClamSMTP Minor changes based on feedback and rebase from v8. 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 v9 (assembly): - Moved to relative reference for sync_core based on feedback. - x86/crypto had multiple algorithms deleted, removed PIE changes to them. - fix typo on comment end line. - 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/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/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 - 23 files changed, 261 insertions(+), 181 deletions(-) Patchset is based on next-20190729.