[PATCH v11 0/9] Control-flow Enforcement: Indirect Branch Tracking, PTRACE

[Yu-cheng Yu <yu-cheng.yu@intel.com>]

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 from v9:

- Remove the legacy bitmap arch_prctl() as it is not used by GLIBC anymore.
  Should it be needed in the future, I will re-post the patch separately.

[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] Previous IBT patches v9:

    https://lkml.kernel.org/r/20200205182308.4028-1-yu-cheng.yu@intel.com/

    There have been no major changes since v9, and there is no IBT patches
    v10.

H.J. Lu (4):
  x86/cet/ibt: Update arch_prctl functions for Indirect Branch Tracking
  x86/vdso/32: Add ENDBR32 to __kernel_vsyscall entry point
  x86/vdso: Insert endbr32/endbr64 to vDSO
  x86: Disallow vsyscall emulation when CET is enabled

Yu-cheng Yu (5):
  x86/cet/ibt: Add Kconfig option for user-mode Indirect Branch Tracking
  x86/cet/ibt: User-mode Indirect Branch Tracking support
  x86/cet/ibt: Handle signals for Indirect Branch Tracking
  x86/cet/ibt: ELF header parsing for Indirect Branch Tracking
  x86/cet: Add PTRACE interface for CET

 arch/x86/Kconfig                              | 26 +++++++-
 arch/x86/entry/vdso/Makefile                  |  4 ++
 arch/x86/entry/vdso/vdso32/system_call.S      |  3 +
 arch/x86/include/asm/cet.h                    |  3 +
 arch/x86/include/asm/disabled-features.h      |  8 ++-
 arch/x86/include/asm/fpu/regset.h             |  7 ++-
 arch/x86/kernel/cet.c                         | 60 ++++++++++++++++++-
 arch/x86/kernel/cet_prctl.c                   |  8 ++-
 arch/x86/kernel/cpu/common.c                  | 17 ++++++
 arch/x86/kernel/fpu/regset.c                  | 44 ++++++++++++++
 arch/x86/kernel/fpu/signal.c                  |  8 ++-
 arch/x86/kernel/process_64.c                  |  8 +++
 arch/x86/kernel/ptrace.c                      | 16 +++++
 include/uapi/linux/elf.h                      |  1 +
 .../arch/x86/include/asm/disabled-features.h  |  8 ++-
 15 files changed, 208 insertions(+), 13 deletions(-)

-- 
2.21.0