[GIT PULL] gcc-plugins update for v4.21-rc1

[Kees Cook]

Hi Linus,

Please pull this gcc-plugin addition for v4.21-rc1. Both arm and arm64 are
gaining per-task stack canaries (to match x86), but arm is being done with
a gcc plugin, hence it going through the gcc-plugins tree.

Thanks!

-Kees

The following changes since commit ccda4af0f4b92f7b4c308d3acc262f4a7e3affad:

  Linux 4.20-rc2 (2018-11-11 17:12:31 -0600)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git tags/gcc-plugins-v4.21-rc1

for you to fetch changes up to 189af4657186da08a2e79fb8e906cfd82b2ccddc:

  ARM: smp: add support for per-task stack canaries (2018-12-12 13:20:07 -0800)

----------------------------------------------------------------
New gcc-plugin:

- Enable per-task stack protector for ARM (Ard Biesheuvel)

----------------------------------------------------------------
Ard Biesheuvel (1):
      ARM: smp: add support for per-task stack canaries

 arch/arm/Kconfig                              |  15 ++++
 arch/arm/Makefile                             |  12 +++
 arch/arm/boot/compressed/Makefile             |   1 +
 arch/arm/include/asm/stackprotector.h         |  12 ++-
 arch/arm/include/asm/thread_info.h            |   3 +
 arch/arm/kernel/asm-offsets.c                 |   4 +
 arch/arm/kernel/process.c                     |   6 +-
 scripts/Makefile.gcc-plugins                  |   6 ++
 scripts/gcc-plugins/Kconfig                   |   4 +
 scripts/gcc-plugins/arm_ssp_per_task_plugin.c | 103 ++++++++++++++++++++++++++
 10 files changed, 163 insertions(+), 3 deletions(-)
 create mode 100644 scripts/gcc-plugins/arm_ssp_per_task_plugin.c

-- 
Kees Cook