These two patches add SANITIZE_xx.o and SANITIZE to disable all sanitizers for
specific files, and apply them to x86 booting code.
We need to disable UBSAN for some of ealy stage code:
o For code which could operate in one-one mapping mode. In this case,
kernel would crash at accessing data parameter when invoking UBSAN
handlers.
o Since UBSAN handlers are instrumented by KASAN, so invoking UBSAN
handlers before KASAN is initiated also is not allowed.
Changbin Du (2):
sanitize: Add SANITIZE_xx.o and SANITIZE to disable all sanitizers for
specific files
x86: Disable both KASAN and UBSAN for some booting code
Documentation/dev-tools/kasan.rst | 12 ++++++++++++
arch/x86/boot/Makefile | 2 +-
arch/x86/boot/compressed/Makefile | 2 +-
arch/x86/entry/vdso/Makefile | 3 +--
arch/x86/kernel/Makefile | 10 +++++-----
arch/x86/lib/Makefile | 2 +-
arch/x86/mm/Makefile | 4 ++--
arch/x86/realmode/Makefile | 2 +-
arch/x86/realmode/rm/Makefile | 2 +-
scripts/Makefile.lib | 4 ++--
10 files changed, 27 insertions(+), 16 deletions(-)
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2.24.0
