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=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, 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 47D4BC04AB5 for ; Thu, 6 Jun 2019 20:15:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1DB96206BB for ; Thu, 6 Jun 2019 20:15:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728800AbfFFUPJ (ORCPT ); Thu, 6 Jun 2019 16:15:09 -0400 Received: from mga17.intel.com ([192.55.52.151]:47825 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726674AbfFFUPJ (ORCPT ); Thu, 6 Jun 2019 16:15:09 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 06 Jun 2019 13:15:08 -0700 X-ExtLoop1: 1 Received: from yyu32-desk1.sc.intel.com ([143.183.136.147]) by orsmga002.jf.intel.com with ESMTP; 06 Jun 2019 13:15:07 -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 Cc: Yu-cheng Yu Subject: [PATCH v7 00/27] Control-flow Enforcement: Shadow Stack Date: Thu, 6 Jun 2019 13:06:19 -0700 Message-Id: <20190606200646.3951-1-yu-cheng.yu@intel.com> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Intel has published Control-flow Enforcement (CET) in the Architecture Instruction Set Extensions Programming Reference: https://software.intel.com/en-us/download/intel-architecture-instruction-set- extensions-programming-reference The previous version (v6) of CET Shadow Stack patches is here: https://lkml.org/lkml/2018/11/20/225 Summary of changes from v6: Rebase to v5.2-rc3. Adapt XSAVES system state changes to the recent FPU changes: - Add modify_fpu_regs_begin(), modify_fpu_regs_end() to protect CET MSR changes. - Update signal handling. Move ELF header-parsing out of x86. Other small fixes in response to comments. This version passed GLIBC built-in tests. Hi Maintainers, What else is needed before this series can be merged? Thanks, Yu-cheng Yu-cheng Yu (27): Documentation/x86: Add CET description x86/cpufeatures: Add CET CPU feature flags for Control-flow Enforcement Technology (CET) x86/fpu/xstate: Change names to separate XSAVES system and user states x86/fpu/xstate: Introduce XSAVES system states x86/fpu/xstate: Add XSAVES system states for shadow stack x86/cet: Add control protection exception handler x86/cet/shstk: Add Kconfig option for user-mode shadow stack mm: Introduce VM_SHSTK for shadow stack memory mm/mmap: Prevent Shadow Stack VMA merges x86/mm: Change _PAGE_DIRTY to _PAGE_DIRTY_HW x86/mm: Introduce _PAGE_DIRTY_SW drm/i915/gvt: Update _PAGE_DIRTY to _PAGE_DIRTY_BITS x86/mm: Modify ptep_set_wrprotect and pmdp_set_wrprotect for _PAGE_DIRTY_SW x86/mm: Shadow stack page fault error checking mm: Handle shadow stack page fault mm: Handle THP/HugeTLB shadow stack page fault mm: Update can_follow_write_pte/pmd for shadow stack mm: Introduce do_mmap_locked() x86/cet/shstk: User-mode shadow stack support x86/cet/shstk: Introduce WRUSS instruction x86/cet/shstk: Handle signals for shadow stack binfmt_elf: Extract .note.gnu.property from an ELF file x86/cet/shstk: ELF header parsing of Shadow Stack x86/cet/shstk: Handle thread shadow stack mm/mmap: Add Shadow stack pages to memory accounting x86/cet/shstk: Add arch_prctl functions for Shadow Stack x86/cet/shstk: Add Shadow Stack instructions to opcode map .../admin-guide/kernel-parameters.txt | 6 + Documentation/x86/index.rst | 1 + Documentation/x86/intel_cet.rst | 268 +++++++++++++ arch/x86/Kconfig | 26 ++ arch/x86/Makefile | 7 + arch/x86/entry/entry_64.S | 2 +- arch/x86/ia32/ia32_signal.c | 8 + arch/x86/include/asm/cet.h | 48 +++ arch/x86/include/asm/cpufeatures.h | 2 + arch/x86/include/asm/disabled-features.h | 8 +- arch/x86/include/asm/fpu/internal.h | 25 +- arch/x86/include/asm/fpu/signal.h | 2 + arch/x86/include/asm/fpu/types.h | 22 ++ arch/x86/include/asm/fpu/xstate.h | 26 +- arch/x86/include/asm/mmu_context.h | 3 + arch/x86/include/asm/msr-index.h | 18 + arch/x86/include/asm/pgtable.h | 191 ++++++++-- arch/x86/include/asm/pgtable_types.h | 38 +- arch/x86/include/asm/processor.h | 5 + arch/x86/include/asm/special_insns.h | 32 ++ arch/x86/include/asm/traps.h | 5 + arch/x86/include/uapi/asm/prctl.h | 5 + arch/x86/include/uapi/asm/processor-flags.h | 2 + arch/x86/include/uapi/asm/sigcontext.h | 15 + arch/x86/kernel/Makefile | 2 + arch/x86/kernel/cet.c | 327 ++++++++++++++++ arch/x86/kernel/cet_prctl.c | 85 +++++ arch/x86/kernel/cpu/common.c | 25 ++ arch/x86/kernel/cpu/cpuid-deps.c | 2 + arch/x86/kernel/fpu/core.c | 26 +- arch/x86/kernel/fpu/init.c | 10 - arch/x86/kernel/fpu/signal.c | 81 +++- arch/x86/kernel/fpu/xstate.c | 156 +++++--- arch/x86/kernel/idt.c | 4 + arch/x86/kernel/process.c | 8 +- arch/x86/kernel/process_64.c | 31 ++ arch/x86/kernel/relocate_kernel_64.S | 2 +- arch/x86/kernel/signal.c | 10 +- arch/x86/kernel/signal_compat.c | 2 +- arch/x86/kernel/traps.c | 57 +++ arch/x86/kvm/vmx/vmx.c | 2 +- arch/x86/lib/x86-opcode-map.txt | 26 +- arch/x86/mm/fault.c | 18 + arch/x86/mm/pgtable.c | 41 ++ drivers/gpu/drm/i915/gvt/gtt.c | 2 +- fs/Kconfig.binfmt | 3 + fs/Makefile | 1 + fs/binfmt_elf.c | 13 + fs/gnu_property.c | 351 ++++++++++++++++++ fs/proc/task_mmu.c | 3 + include/asm-generic/pgtable.h | 14 + include/linux/elf.h | 12 + include/linux/mm.h | 26 ++ include/uapi/asm-generic/siginfo.h | 3 +- include/uapi/linux/elf.h | 14 + mm/gup.c | 8 +- mm/huge_memory.c | 12 +- mm/memory.c | 7 +- mm/mmap.c | 11 + .../arch/x86/include/asm/disabled-features.h | 8 +- tools/objtool/arch/x86/lib/x86-opcode-map.txt | 26 +- 61 files changed, 2029 insertions(+), 165 deletions(-) create mode 100644 Documentation/x86/intel_cet.rst create mode 100644 arch/x86/include/asm/cet.h create mode 100644 arch/x86/kernel/cet.c create mode 100644 arch/x86/kernel/cet_prctl.c create mode 100644 fs/gnu_property.c -- 2.17.1 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yu-cheng Yu Subject: [PATCH v7 00/27] Control-flow Enforcement: Shadow Stack Date: Thu, 6 Jun 2019 13:06:19 -0700 Message-ID: <20190606200646.3951-1-yu-cheng.yu@intel.com> Return-path: Sender: linux-kernel-owner@vger.kernel.org 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 Cc: Yu-cheng Yu List-Id: linux-api@vger.kernel.org Intel has published Control-flow Enforcement (CET) in the Architecture Instruction Set Extensions Programming Reference: https://software.intel.com/en-us/download/intel-architecture-instruction-set- extensions-programming-reference The previous version (v6) of CET Shadow Stack patches is here: https://lkml.org/lkml/2018/11/20/225 Summary of changes from v6: Rebase to v5.2-rc3. Adapt XSAVES system state changes to the recent FPU changes: - Add modify_fpu_regs_begin(), modify_fpu_regs_end() to protect CET MSR changes. - Update signal handling. Move ELF header-parsing out of x86. Other small fixes in response to comments. This version passed GLIBC built-in tests. Hi Maintainers, What else is needed before this series can be merged? Thanks, Yu-cheng Yu-cheng Yu (27): Documentation/x86: Add CET description x86/cpufeatures: Add CET CPU feature flags for Control-flow Enforcement Technology (CET) x86/fpu/xstate: Change names to separate XSAVES system and user states x86/fpu/xstate: Introduce XSAVES system states x86/fpu/xstate: Add XSAVES system states for shadow stack x86/cet: Add control protection exception handler x86/cet/shstk: Add Kconfig option for user-mode shadow stack mm: Introduce VM_SHSTK for shadow stack memory mm/mmap: Prevent Shadow Stack VMA merges x86/mm: Change _PAGE_DIRTY to _PAGE_DIRTY_HW x86/mm: Introduce _PAGE_DIRTY_SW drm/i915/gvt: Update _PAGE_DIRTY to _PAGE_DIRTY_BITS x86/mm: Modify ptep_set_wrprotect and pmdp_set_wrprotect for _PAGE_DIRTY_SW x86/mm: Shadow stack page fault error checking mm: Handle shadow stack page fault mm: Handle THP/HugeTLB shadow stack page fault mm: Update can_follow_write_pte/pmd for shadow stack mm: Introduce do_mmap_locked() x86/cet/shstk: User-mode shadow stack support x86/cet/shstk: Introduce WRUSS instruction x86/cet/shstk: Handle signals for shadow stack binfmt_elf: Extract .note.gnu.property from an ELF file x86/cet/shstk: ELF header parsing of Shadow Stack x86/cet/shstk: Handle thread shadow stack mm/mmap: Add Shadow stack pages to memory accounting x86/cet/shstk: Add arch_prctl functions for Shadow Stack x86/cet/shstk: Add Shadow Stack instructions to opcode map .../admin-guide/kernel-parameters.txt | 6 + Documentation/x86/index.rst | 1 + Documentation/x86/intel_cet.rst | 268 +++++++++++++ arch/x86/Kconfig | 26 ++ arch/x86/Makefile | 7 + arch/x86/entry/entry_64.S | 2 +- arch/x86/ia32/ia32_signal.c | 8 + arch/x86/include/asm/cet.h | 48 +++ arch/x86/include/asm/cpufeatures.h | 2 + arch/x86/include/asm/disabled-features.h | 8 +- arch/x86/include/asm/fpu/internal.h | 25 +- arch/x86/include/asm/fpu/signal.h | 2 + arch/x86/include/asm/fpu/types.h | 22 ++ arch/x86/include/asm/fpu/xstate.h | 26 +- arch/x86/include/asm/mmu_context.h | 3 + arch/x86/include/asm/msr-index.h | 18 + arch/x86/include/asm/pgtable.h | 191 ++++++++-- arch/x86/include/asm/pgtable_types.h | 38 +- arch/x86/include/asm/processor.h | 5 + arch/x86/include/asm/special_insns.h | 32 ++ arch/x86/include/asm/traps.h | 5 + arch/x86/include/uapi/asm/prctl.h | 5 + arch/x86/include/uapi/asm/processor-flags.h | 2 + arch/x86/include/uapi/asm/sigcontext.h | 15 + arch/x86/kernel/Makefile | 2 + arch/x86/kernel/cet.c | 327 ++++++++++++++++ arch/x86/kernel/cet_prctl.c | 85 +++++ arch/x86/kernel/cpu/common.c | 25 ++ arch/x86/kernel/cpu/cpuid-deps.c | 2 + arch/x86/kernel/fpu/core.c | 26 +- arch/x86/kernel/fpu/init.c | 10 - arch/x86/kernel/fpu/signal.c | 81 +++- arch/x86/kernel/fpu/xstate.c | 156 +++++--- arch/x86/kernel/idt.c | 4 + arch/x86/kernel/process.c | 8 +- arch/x86/kernel/process_64.c | 31 ++ arch/x86/kernel/relocate_kernel_64.S | 2 +- arch/x86/kernel/signal.c | 10 +- arch/x86/kernel/signal_compat.c | 2 +- arch/x86/kernel/traps.c | 57 +++ arch/x86/kvm/vmx/vmx.c | 2 +- arch/x86/lib/x86-opcode-map.txt | 26 +- arch/x86/mm/fault.c | 18 + arch/x86/mm/pgtable.c | 41 ++ drivers/gpu/drm/i915/gvt/gtt.c | 2 +- fs/Kconfig.binfmt | 3 + fs/Makefile | 1 + fs/binfmt_elf.c | 13 + fs/gnu_property.c | 351 ++++++++++++++++++ fs/proc/task_mmu.c | 3 + include/asm-generic/pgtable.h | 14 + include/linux/elf.h | 12 + include/linux/mm.h | 26 ++ include/uapi/asm-generic/siginfo.h | 3 +- include/uapi/linux/elf.h | 14 + mm/gup.c | 8 +- mm/huge_memory.c | 12 +- mm/memory.c | 7 +- mm/mmap.c | 11 + .../arch/x86/include/asm/disabled-features.h | 8 +- tools/objtool/arch/x86/lib/x86-opcode-map.txt | 26 +- 61 files changed, 2029 insertions(+), 165 deletions(-) create mode 100644 Documentation/x86/intel_cet.rst create mode 100644 arch/x86/include/asm/cet.h create mode 100644 arch/x86/kernel/cet.c create mode 100644 arch/x86/kernel/cet_prctl.c create mode 100644 fs/gnu_property.c -- 2.17.1