Control-flow Enforcement: Indirect Branch Tracking
| From: | Yu-cheng Yu <yu-cheng.yu-AT-intel.com> | |
| To: | x86-AT-kernel.org, "H. Peter Anvin" <hpa-AT-zytor.com>, Thomas Gleixner <tglx-AT-linutronix.de>, Ingo Molnar <mingo-AT-redhat.com>, linux-kernel-AT-vger.kernel.org, linux-doc-AT-vger.kernel.org, linux-mm-AT-kvack.org, linux-arch-AT-vger.kernel.org, linux-api-AT-vger.kernel.org, Arnd Bergmann <arnd-AT-arndb.de>, Andy Lutomirski <luto-AT-kernel.org>, Balbir Singh <bsingharora-AT-gmail.com>, Borislav Petkov <bp-AT-alien8.de>, Cyrill Gorcunov <gorcunov-AT-gmail.com>, Dave Hansen <dave.hansen-AT-linux.intel.com>, Eugene Syromiatnikov <esyr-AT-redhat.com>, Florian Weimer <fweimer-AT-redhat.com>, "H.J. Lu" <hjl.tools-AT-gmail.com>, Jann Horn <jannh-AT-google.com>, Jonathan Corbet <corbet-AT-lwn.net>, Kees Cook <keescook-AT-chromium.org>, Mike Kravetz <mike.kravetz-AT-oracle.com>, Nadav Amit <nadav.amit-AT-gmail.com>, Oleg Nesterov <oleg-AT-redhat.com>, Pavel Machek <pavel-AT-ucw.cz>, Peter Zijlstra <peterz-AT-infradead.org>, Randy Dunlap <rdunlap-AT-infradead.org>, "Ravi V. Shankar" <ravi.v.shankar-AT-intel.com>, Vedvyas Shanbhogue <vedvyas.shanbhogue-AT-intel.com>, Dave Martin <Dave.Martin-AT-arm.com>, Weijiang Yang <weijiang.yang-AT-intel.com>, Pengfei Xu <pengfei.xu-AT-intel.com>, Haitao Huang <haitao.huang-AT-intel.com> | |
| 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> | |
| Cc: | Yu-cheng Yu <yu-cheng.yu-AT-intel.com> | |
| Archive-link: | Article |
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...
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...
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
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2.21.0