From patchwork Fri May 21 22:15:21 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yu-cheng Yu X-Patchwork-Id: 12273931 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=-11.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,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 D45B5C4707E for ; Fri, 21 May 2021 22:16:34 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 7E813613E6 for ; Fri, 21 May 2021 22:16:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7E813613E6 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 27CBB8E006B; Fri, 21 May 2021 18:16:33 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 0F4428E006E; Fri, 21 May 2021 18:16:33 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D99228E006A; Fri, 21 May 2021 18:16:32 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0134.hostedemail.com [216.40.44.134]) by kanga.kvack.org (Postfix) with ESMTP id A349B8E006B for ; Fri, 21 May 2021 18:16:32 -0400 (EDT) Received: from smtpin14.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 47FCF5828 for ; Fri, 21 May 2021 22:16:32 +0000 (UTC) X-FDA: 78166648224.14.49A557E Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by imf12.hostedemail.com (Postfix) with ESMTP id 6520D2D3 for ; Fri, 21 May 2021 22:16:25 +0000 (UTC) IronPort-SDR: RwS7J5u5S7ThAM/zkccsw4XD4gae5fZzbKhshZ5+5FyqnxLi6zsVfz19Op9x9UeHGroyjQAzyM G1olixXrE/2Q== X-IronPort-AV: E=McAfee;i="6200,9189,9991"; a="198500971" X-IronPort-AV: E=Sophos;i="5.82,319,1613462400"; d="scan'208";a="198500971" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 May 2021 15:16:28 -0700 IronPort-SDR: VeDJ4dRZPoXJ0JOgGY9taVtnV4mxx/Xzdzs1Zjsnf7gLo4dyvn4SAHdMx3DD+KScH2JnQHV9v1 ZzN8ehK1AKSA== X-IronPort-AV: E=Sophos;i="5.82,319,1613462400"; d="scan'208";a="441269422" Received: from yyu32-desk.sc.intel.com ([143.183.136.146]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 May 2021 15:16:28 -0700 From: Yu-cheng Yu To: x86@kernel.org, "H. Peter Anvin" , Thomas Gleixner , Ingo Molnar , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-api@vger.kernel.org, Arnd Bergmann , Andy Lutomirski , Balbir Singh , Borislav Petkov , Cyrill Gorcunov , Dave Hansen , Eugene Syromiatnikov , Florian Weimer , "H.J. Lu" , Jann Horn , Jonathan Corbet , Kees Cook , Mike Kravetz , Nadav Amit , Oleg Nesterov , Pavel Machek , Peter Zijlstra , Randy Dunlap , "Ravi V. Shankar" , Vedvyas Shanbhogue , Dave Martin , Weijiang Yang , Pengfei Xu , Haitao Huang Cc: Yu-cheng Yu Subject: [PATCH v27 00/10] Control-flow Enforcement: Indirect Branch Tracking Date: Fri, 21 May 2021 15:15:21 -0700 Message-Id: <20210521221531.30168-1-yu-cheng.yu@intel.com> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Authentication-Results: imf12.hostedemail.com; dkim=none; dmarc=fail reason="No valid SPF, No valid DKIM" header.from=intel.com (policy=none); spf=none (imf12.hostedemail.com: domain of yu-cheng.yu@intel.com has no SPF policy when checking 192.55.52.93) smtp.mailfrom=yu-cheng.yu@intel.com X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 6520D2D3 X-Stat-Signature: ghrbezgzmtwfnhccxgbgesjx6rjz71qj X-HE-Tag: 1621635385-210515 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Control-flow Enforcement (CET) is a new Intel processor feature that blocks return/jump-oriented programming attacks. Details are in "Intel 64 and IA-32 Architectures Software Developer's Manual" [1]. This is the second part of CET and enables Indirect Branch Tracking (IBT). It is built on top of the shadow stack series. Changes in v27: - Use a ucontext flag to save/restore IBT status. - Disable IBT support for IA32. - Rebase to Linus tree v5.13-rc2. [1] Intel 64 and IA-32 Architectures Software Developer's Manual: https://software.intel.com/en-us/download/intel-64-and-ia-32- architectures-sdm-combined-volumes-1-2a-2b-2c-2d-3a-3b-3c-3d-and-4 [2] Indirect Branch Tracking patches v26: https://lore.kernel.org/r/20210427204720.25007-1-yu-cheng.yu@intel.com/ H.J. Lu (3): x86/cet/ibt: Update arch_prctl functions for Indirect Branch Tracking x86/vdso: Insert endbr32/endbr64 to vDSO x86/vdso/32: Add ENDBR to __kernel_vsyscall entry point Yu-cheng Yu (7): x86/cet/ibt: Add Kconfig option for Indirect Branch Tracking x86/cet/ibt: Add user-mode Indirect Branch Tracking support x86/cet/ibt: Handle signals for Indirect Branch Tracking x86/cet/ibt: Disable IBT for ia32 x86/cet/ibt: Update ELF header parsing for Indirect Branch Tracking x86/vdso: Introduce ENDBR macro x86/vdso: Add ENDBR to __vdso_sgx_enter_enclave arch/x86/Kconfig | 19 +++++ arch/x86/entry/vdso/Makefile | 4 + arch/x86/entry/vdso/vdso32/system_call.S | 2 + arch/x86/entry/vdso/vsgx.S | 4 + arch/x86/ia32/ia32_signal.c | 22 +++++- arch/x86/include/asm/cet.h | 13 ++++ arch/x86/include/asm/disabled-features.h | 8 +- arch/x86/include/asm/elf.h | 13 +++- arch/x86/include/asm/vdso.h | 20 ++++- arch/x86/include/uapi/asm/ucontext.h | 5 ++ arch/x86/kernel/Makefile | 1 + arch/x86/kernel/cet_prctl.c | 5 ++ arch/x86/kernel/ibt.c | 95 ++++++++++++++++++++++++ arch/x86/kernel/process_64.c | 8 ++ arch/x86/kernel/signal.c | 6 ++ 15 files changed, 219 insertions(+), 6 deletions(-) create mode 100644 arch/x86/kernel/ibt.c