From: Mike Rapoport <rppt@kernel.org>
To: Rick Edgecombe <rick.p.edgecombe@intel.com>
Cc: x86@kernel.org, "H . Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
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 <arnd@arndb.de>,
Andy Lutomirski <luto@kernel.org>,
Balbir Singh <bsingharora@gmail.com>,
Borislav Petkov <bp@alien8.de>,
Cyrill Gorcunov <gorcunov@gmail.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
Eugene Syromiatnikov <esyr@redhat.com>,
Florian Weimer <fweimer@redhat.com>,
"H . J . Lu" <hjl.tools@gmail.com>, Jann Horn <jannh@google.com>,
Jonathan Corbet <corbet@lwn.net>,
Kees Cook <keescook@chromium.org>,
Mike Kravetz <mike.kravetz@oracle.com>,
Nadav Amit <nadav.amit@gmail.com>,
Oleg Nesterov <oleg@redhat.com>, Pavel Machek <pavel@ucw.cz>,
Peter Zijlstra <peterz@infradead.org>,
Randy Dunlap <rdunlap@infradead.org>,
Weijiang Yang <weijiang.yang@intel.com>,
"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
John Allen <john.allen@amd.com>,
kcc@google.com, eranian@google.com, jamorris@linux.microsoft.com,
dethoma@microsoft.com, akpm@linux-foundation.org,
Andrew.Cooper3@citrix.com, christina.schimpe@intel.com
Subject: Re: [PATCH v5 00/39] Shadow stacks for userspace
Date: Sun, 22 Jan 2023 10:20:27 +0200 [thread overview]
Message-ID: <Y8zxy4uVId8xlY1G@kernel.org> (raw)
In-Reply-To: <20230119212317.8324-1-rick.p.edgecombe@intel.com>
On Thu, Jan 19, 2023 at 01:22:38PM -0800, Rick Edgecombe wrote:
> Hi,
>
> This series implements Shadow Stacks for userspace using x86's Control-flow
> Enforcement Technology (CET). CET consists of two related security features:
> shadow stacks and indirect branch tracking. This series implements just the
> shadow stack part of this feature, and just for userspace.
Acked-by: Mike Rapoport (IBM) <rppt@kernel.org>
> Previous version [1].
>
> [0] https://lore.kernel.org/lkml/20220130211838.8382-1-rick.p.edgecombe@intel.com/
> [1] https://lore.kernel.org/lkml/20221203003606.6838-1-rick.p.edgecombe@intel.com/
>
> Kirill A. Shutemov (1):
> x86: Introduce userspace API for shadow stack
>
> Mike Rapoport (1):
> x86/shstk: Add ARCH_SHSTK_UNLOCK
>
> Rick Edgecombe (14):
> x86/fpu: Add helper for modifying xstate
> x86/mm: Introduce _PAGE_COW
> x86/mm: Start actually marking _PAGE_COW
> mm: Handle faultless write upgrades for shstk
> mm: Don't allow write GUPs to shadow stack memory
> x86/mm: Introduce MAP_ABOVE4G
> mm: Warn on shadow stack memory in wrong vma
> x86/shstk: Introduce map_shadow_stack syscall
> x86/shstk: Support WRSS for userspace
> x86: Expose thread features in /proc/$PID/status
> x86/shstk: Wire in shadow stack interface
> selftests/x86: Add shadow stack test
> x86/fpu: Add helper for initing features
> x86/shstk: Add ARCH_SHSTK_STATUS
>
> Yu-cheng Yu (23):
> Documentation/x86: Add CET shadow stack description
> x86/shstk: Add Kconfig option for shadow stack
> x86/cpufeatures: Add CPU feature flags for shadow stacks
> x86/cpufeatures: Enable CET CR4 bit for shadow stack
> x86/fpu/xstate: Introduce CET MSR and XSAVES supervisor states
> x86: Add user control-protection fault handler
> x86/mm: Remove _PAGE_DIRTY from kernel RO pages
> x86/mm: Move pmd_write(), pud_write() up in the file
> x86/mm: Update pte_modify for _PAGE_COW
> x86/mm: Update ptep_set_wrprotect() and pmdp_set_wrprotect() for
> transition from _PAGE_DIRTY to _PAGE_COW
> mm: Move VM_UFFD_MINOR_BIT from 37 to 38
> mm: Introduce VM_SHADOW_STACK for shadow stack memory
> x86/mm: Check shadow stack page fault errors
> x86/mm: Update maybe_mkwrite() for shadow stack
> mm: Fixup places that call pte_mkwrite() directly
> mm: Add guard pages around a shadow stack.
> mm/mmap: Add shadow stack pages to memory accounting
> mm: Re-introduce vm_flags to do_mmap()
> x86/shstk: Add user-mode shadow stack support
> x86/shstk: Handle thread shadow stack
> x86/shstk: Introduce routines modifying shstk
> x86/shstk: Handle signals for shadow stack
> x86: Add PTRACE interface for shadow stack
>
> Documentation/filesystems/proc.rst | 1 +
> Documentation/x86/index.rst | 1 +
> Documentation/x86/shstk.rst | 176 +++++
> arch/arm/kernel/signal.c | 2 +-
> arch/arm64/kernel/signal.c | 2 +-
> arch/arm64/kernel/signal32.c | 2 +-
> arch/sparc/kernel/signal32.c | 2 +-
> arch/sparc/kernel/signal_64.c | 2 +-
> arch/x86/Kconfig | 24 +
> arch/x86/Kconfig.assembler | 5 +
> arch/x86/entry/syscalls/syscall_64.tbl | 1 +
> arch/x86/include/asm/cpufeatures.h | 2 +
> arch/x86/include/asm/disabled-features.h | 16 +-
> arch/x86/include/asm/fpu/api.h | 9 +
> arch/x86/include/asm/fpu/regset.h | 7 +-
> arch/x86/include/asm/fpu/sched.h | 3 +-
> arch/x86/include/asm/fpu/types.h | 16 +-
> arch/x86/include/asm/fpu/xstate.h | 6 +-
> arch/x86/include/asm/idtentry.h | 2 +-
> arch/x86/include/asm/mmu_context.h | 2 +
> arch/x86/include/asm/msr.h | 11 +
> arch/x86/include/asm/pgtable.h | 338 ++++++++-
> arch/x86/include/asm/pgtable_types.h | 65 +-
> arch/x86/include/asm/processor.h | 8 +
> arch/x86/include/asm/shstk.h | 40 ++
> arch/x86/include/asm/special_insns.h | 13 +
> arch/x86/include/asm/tlbflush.h | 3 +-
> arch/x86/include/asm/trap_pf.h | 2 +
> arch/x86/include/asm/traps.h | 12 +
> arch/x86/include/uapi/asm/mman.h | 4 +
> arch/x86/include/uapi/asm/prctl.h | 12 +
> arch/x86/kernel/Makefile | 4 +
> arch/x86/kernel/cet.c | 152 ++++
> arch/x86/kernel/cpu/common.c | 35 +-
> arch/x86/kernel/cpu/cpuid-deps.c | 1 +
> arch/x86/kernel/cpu/proc.c | 23 +
> arch/x86/kernel/fpu/core.c | 59 +-
> arch/x86/kernel/fpu/regset.c | 87 +++
> arch/x86/kernel/fpu/xstate.c | 148 ++--
> arch/x86/kernel/fpu/xstate.h | 6 +
> arch/x86/kernel/idt.c | 2 +-
> arch/x86/kernel/process.c | 18 +-
> arch/x86/kernel/process_64.c | 9 +-
> arch/x86/kernel/ptrace.c | 12 +
> arch/x86/kernel/shstk.c | 492 +++++++++++++
> arch/x86/kernel/signal.c | 1 +
> arch/x86/kernel/signal_32.c | 2 +-
> arch/x86/kernel/signal_64.c | 8 +-
> arch/x86/kernel/sys_x86_64.c | 6 +-
> arch/x86/kernel/traps.c | 87 ---
> arch/x86/mm/fault.c | 38 +
> arch/x86/mm/pat/set_memory.c | 2 +-
> arch/x86/mm/pgtable.c | 6 +
> arch/x86/xen/enlighten_pv.c | 2 +-
> arch/x86/xen/xen-asm.S | 2 +-
> fs/aio.c | 2 +-
> fs/proc/array.c | 6 +
> fs/proc/task_mmu.c | 3 +
> include/linux/mm.h | 59 +-
> include/linux/mman.h | 4 +
> include/linux/pgtable.h | 35 +
> include/linux/proc_fs.h | 2 +
> include/linux/syscalls.h | 1 +
> include/uapi/asm-generic/siginfo.h | 3 +-
> include/uapi/asm-generic/unistd.h | 2 +-
> include/uapi/linux/elf.h | 2 +
> ipc/shm.c | 2 +-
> kernel/sys_ni.c | 1 +
> mm/gup.c | 2 +-
> mm/huge_memory.c | 12 +-
> mm/memory.c | 7 +-
> mm/migrate_device.c | 4 +-
> mm/mmap.c | 12 +-
> mm/nommu.c | 4 +-
> mm/userfaultfd.c | 10 +-
> mm/util.c | 2 +-
> tools/testing/selftests/x86/Makefile | 4 +-
> .../testing/selftests/x86/test_shadow_stack.c | 667 ++++++++++++++++++
> 78 files changed, 2578 insertions(+), 259 deletions(-)
> create mode 100644 Documentation/x86/shstk.rst
> create mode 100644 arch/x86/include/asm/shstk.h
> create mode 100644 arch/x86/kernel/cet.c
> create mode 100644 arch/x86/kernel/shstk.c
> create mode 100644 tools/testing/selftests/x86/test_shadow_stack.c
>
> --
> 2.17.1
>
prev parent reply other threads:[~2023-01-22 8:20 UTC|newest]
Thread overview: 120+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-19 21:22 [PATCH v5 00/39] Shadow stacks for userspace Rick Edgecombe
2023-01-19 21:22 ` [PATCH v5 01/39] Documentation/x86: Add CET shadow stack description Rick Edgecombe
2023-01-20 0:38 ` Kees Cook
2023-01-19 21:22 ` [PATCH v5 02/39] x86/shstk: Add Kconfig option for shadow stack Rick Edgecombe
2023-01-20 0:40 ` Kees Cook
2023-01-19 21:22 ` [PATCH v5 03/39] x86/cpufeatures: Add CPU feature flags for shadow stacks Rick Edgecombe
2023-01-20 0:44 ` Kees Cook
2023-01-19 21:22 ` [PATCH v5 04/39] x86/cpufeatures: Enable CET CR4 bit for shadow stack Rick Edgecombe
2023-01-20 0:46 ` Kees Cook
2023-01-19 21:22 ` [PATCH v5 05/39] x86/fpu/xstate: Introduce CET MSR and XSAVES supervisor states Rick Edgecombe
2023-01-20 0:46 ` Kees Cook
2023-01-19 21:22 ` [PATCH v5 06/39] x86/fpu: Add helper for modifying xstate Rick Edgecombe
2023-01-20 0:47 ` Kees Cook
2023-02-01 11:01 ` Borislav Petkov
2023-02-01 17:31 ` Edgecombe, Rick P
2023-02-01 18:18 ` Borislav Petkov
2023-01-19 21:22 ` [PATCH v5 07/39] x86: Add user control-protection fault handler Rick Edgecombe
2023-01-20 0:50 ` Kees Cook
2023-02-03 19:09 ` Borislav Petkov
2023-02-03 19:24 ` Edgecombe, Rick P
2023-02-03 19:44 ` Borislav Petkov
2023-02-03 23:01 ` Edgecombe, Rick P
2023-02-04 10:37 ` Borislav Petkov
2023-01-19 21:22 ` [PATCH v5 08/39] x86/mm: Remove _PAGE_DIRTY from kernel RO pages Rick Edgecombe
2023-01-20 0:52 ` Kees Cook
2023-01-19 21:22 ` [PATCH v5 09/39] x86/mm: Move pmd_write(), pud_write() up in the file Rick Edgecombe
2023-01-19 21:22 ` [PATCH v5 10/39] x86/mm: Introduce _PAGE_COW Rick Edgecombe
2023-01-20 0:55 ` Kees Cook
2023-01-23 9:16 ` David Hildenbrand
2023-01-23 9:28 ` David Hildenbrand
2023-01-23 20:56 ` Edgecombe, Rick P
2023-01-24 16:28 ` David Hildenbrand
2023-01-19 21:22 ` [PATCH v5 11/39] x86/mm: Update pte_modify for _PAGE_COW Rick Edgecombe
2023-01-20 0:57 ` Kees Cook
2023-02-09 14:08 ` Borislav Petkov
2023-02-09 17:09 ` Edgecombe, Rick P
2023-02-10 13:57 ` Borislav Petkov
2023-02-10 17:00 ` Edgecombe, Rick P
2023-02-17 16:11 ` Borislav Petkov
2023-02-17 16:53 ` Edgecombe, Rick P
2023-01-19 21:22 ` [PATCH v5 12/39] x86/mm: Update ptep_set_wrprotect() and pmdp_set_wrprotect() for transition from _PAGE_DIRTY to _PAGE_COW Rick Edgecombe
2023-01-20 0:58 ` Kees Cook
2023-01-19 21:22 ` [PATCH v5 13/39] x86/mm: Start actually marking _PAGE_COW Rick Edgecombe
2023-01-19 21:22 ` [PATCH v5 14/39] mm: Move VM_UFFD_MINOR_BIT from 37 to 38 Rick Edgecombe
2023-01-19 21:22 ` [PATCH v5 15/39] mm: Introduce VM_SHADOW_STACK for shadow stack memory Rick Edgecombe
2023-01-19 21:22 ` [PATCH v5 16/39] x86/mm: Check shadow stack page fault errors Rick Edgecombe
2023-01-20 0:59 ` Kees Cook
2023-01-19 21:22 ` [PATCH v5 17/39] x86/mm: Update maybe_mkwrite() for shadow stack Rick Edgecombe
2023-01-19 21:22 ` [PATCH v5 18/39] mm: Handle faultless write upgrades for shstk Rick Edgecombe
2023-01-23 9:50 ` David Hildenbrand
2023-01-23 20:47 ` Edgecombe, Rick P
2023-01-24 16:24 ` David Hildenbrand
2023-01-24 18:14 ` Edgecombe, Rick P
2023-01-25 9:27 ` David Hildenbrand
2023-01-25 18:43 ` Edgecombe, Rick P
2023-01-26 0:59 ` Edgecombe, Rick P
2023-01-26 8:46 ` David Hildenbrand
2023-01-26 20:19 ` Edgecombe, Rick P
2023-01-27 16:12 ` David Hildenbrand
2023-01-28 0:51 ` Edgecombe, Rick P
2023-01-31 8:46 ` David Hildenbrand
2023-01-31 23:33 ` Edgecombe, Rick P
2023-02-01 9:03 ` David Hildenbrand
2023-02-01 17:32 ` Edgecombe, Rick P
2023-02-01 18:03 ` David Hildenbrand
2023-01-26 8:57 ` David Hildenbrand
2023-01-26 20:16 ` Edgecombe, Rick P
2023-01-27 16:19 ` David Hildenbrand
2023-01-19 21:22 ` [PATCH v5 19/39] mm: Fixup places that call pte_mkwrite() directly Rick Edgecombe
2023-01-20 1:01 ` Kees Cook
2023-02-14 0:09 ` Deepak Gupta
2023-02-14 1:07 ` Edgecombe, Rick P
2023-02-14 6:10 ` Deepak Gupta
2023-02-14 18:24 ` Edgecombe, Rick P
2023-02-15 6:37 ` Deepak Gupta
2023-01-19 21:22 ` [PATCH v5 20/39] mm: Add guard pages around a shadow stack Rick Edgecombe
2023-01-19 21:22 ` [PATCH v5 21/39] mm/mmap: Add shadow stack pages to memory accounting Rick Edgecombe
2023-01-19 21:23 ` [PATCH v5 22/39] mm: Re-introduce vm_flags to do_mmap() Rick Edgecombe
2023-01-19 21:23 ` [PATCH v5 23/39] mm: Don't allow write GUPs to shadow stack memory Rick Edgecombe
2023-01-23 9:10 ` David Hildenbrand
2023-01-23 10:45 ` Florian Weimer
2023-01-23 20:46 ` Edgecombe, Rick P
2023-01-24 16:26 ` David Hildenbrand
2023-01-24 18:42 ` Edgecombe, Rick P
2023-01-24 23:08 ` Kees Cook
2023-01-24 23:41 ` Edgecombe, Rick P
2023-01-25 9:29 ` David Hildenbrand
2023-01-25 15:23 ` Kees Cook
2023-01-25 15:36 ` Schimpe, Christina
2023-01-25 16:43 ` Schimpe, Christina
2023-01-19 21:23 ` [PATCH v5 24/39] x86/mm: Introduce MAP_ABOVE4G Rick Edgecombe
2023-01-19 21:23 ` [PATCH v5 25/39] mm: Warn on shadow stack memory in wrong vma Rick Edgecombe
2023-01-20 1:01 ` Kees Cook
2023-01-19 21:23 ` [PATCH v5 26/39] x86: Introduce userspace API for shadow stack Rick Edgecombe
2023-01-20 1:04 ` Kees Cook
2023-01-19 21:23 ` [PATCH v5 27/39] x86/shstk: Add user-mode shadow stack support Rick Edgecombe
2023-01-20 1:05 ` Kees Cook
2023-01-19 21:23 ` [PATCH v5 28/39] x86/shstk: Handle thread shadow stack Rick Edgecombe
2023-01-19 21:23 ` [PATCH v5 29/39] x86/shstk: Introduce routines modifying shstk Rick Edgecombe
2023-01-20 1:05 ` Kees Cook
2023-01-19 21:23 ` [PATCH v5 30/39] x86/shstk: Handle signals for shadow stack Rick Edgecombe
2023-01-19 21:23 ` [PATCH v5 31/39] x86/shstk: Introduce map_shadow_stack syscall Rick Edgecombe
2023-01-20 1:07 ` Kees Cook
2023-01-19 21:23 ` [PATCH v5 32/39] x86/shstk: Support WRSS for userspace Rick Edgecombe
2023-01-20 1:06 ` Kees Cook
2023-01-19 21:23 ` [PATCH v5 33/39] x86: Expose thread features in /proc/$PID/status Rick Edgecombe
2023-01-19 21:23 ` [PATCH v5 34/39] x86/shstk: Wire in shadow stack interface Rick Edgecombe
2023-01-19 21:23 ` [PATCH v5 35/39] selftests/x86: Add shadow stack test Rick Edgecombe
2023-01-19 21:23 ` [PATCH v5 36/39] x86/fpu: Add helper for initing features Rick Edgecombe
2023-01-19 21:23 ` [PATCH v5 37/39] x86: Add PTRACE interface for shadow stack Rick Edgecombe
2023-01-20 1:08 ` Kees Cook
2023-01-19 21:23 ` [PATCH v5 38/39] x86/shstk: Add ARCH_SHSTK_UNLOCK Rick Edgecombe
2023-01-19 21:23 ` [PATCH v5 39/39] x86/shstk: Add ARCH_SHSTK_STATUS Rick Edgecombe
2023-01-20 1:08 ` Kees Cook
2023-01-19 22:26 ` [PATCH v5 00/39] Shadow stacks for userspace Andrew Morton
2023-01-20 17:27 ` Edgecombe, Rick P
2023-01-20 19:19 ` Kees Cook
2023-01-25 19:46 ` Edgecombe, Rick P
2023-01-20 17:48 ` John Allen
2023-01-22 8:20 ` Mike Rapoport [this message]
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