[PATCH 0/5] add stack protector and guard page support

[Ahmad Fatoum]

GCC's strong stack protector feature is increasingly used as default in
many distros, because of comparatively low overhead. This series adds
support in barebox to catch stack frame overflow as well as a guard
page feature to catch stack region overflow.

Ahmad Fatoum (5):
  include: move PAGE_ definitions into linux/pagemap.h
  ARM: mark early C setup functions as __prereloc
  lib: add stackprotector support
  ARM: mmu: catch stack overflowing into TTB with stack guard page
  commands: add stacksmash command for causing stack overflows

 Makefile                           |   3 -
 arch/arm/cpu/common.c              |   2 +-
 arch/arm/cpu/interrupts_32.c       |  21 +++++-
 arch/arm/cpu/interrupts_64.c       |  38 +++++++---
 arch/arm/cpu/mmu_32.c              |  16 +++++
 arch/arm/cpu/mmu_64.c              |  15 ++++
 arch/arm/cpu/start.c               |   4 +-
 arch/arm/include/asm/barebox-arm.h |  18 ++++-
 arch/arm/include/asm/reloc.h       |   2 +-
 arch/arm/lib64/string.c            |   2 +-
 commands/Kconfig                   |   6 ++
 commands/Makefile                  |   1 +
 commands/stacksmash.c              |  58 ++++++++++++++++
 include/common.h                   |   6 +-
 include/linux/compiler_types.h     |  21 ++++++
 include/linux/pagemap.h            |   8 ++-
 lib/Kconfig                        |   2 +
 lib/Kconfig.hardening              | 108 +++++++++++++++++++++++++++++
 lib/Makefile                       |   1 +
 lib/stackprot.c                    |  32 +++++++++
 lib/string.c                       |   2 +-
 scripts/Makefile.lib               |  10 +++
 22 files changed, 350 insertions(+), 26 deletions(-)
 create mode 100644 commands/stacksmash.c
 create mode 100644 lib/Kconfig.hardening
 create mode 100644 lib/stackprot.c

-- 
2.39.2