Use CONFIG_KASAN_STACK to enable stack tagging. Note, that HWASAN short granules [1] are disabled. Supporting those will require more kernel changes.
[1] https://clang.llvm.org/docs/HardwareAssistedAddressSanitizerDesign.html Signed-off-by: Andrey Konovalov <[email protected]> --- scripts/Makefile.kasan | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/scripts/Makefile.kasan b/scripts/Makefile.kasan index 03757cc60e06..f4beee1b0013 100644 --- a/scripts/Makefile.kasan +++ b/scripts/Makefile.kasan @@ -44,7 +44,8 @@ else endif CFLAGS_KASAN := -fsanitize=kernel-hwaddress \ - -mllvm -hwasan-instrument-stack=0 \ + -mllvm -hwasan-instrument-stack=$(CONFIG_KASAN_STACK) \ + -mllvm -hwasan-use-short-granules=0 \ $(instrumentation_flags) endif # CONFIG_KASAN_SW_TAGS -- 2.28.0.163.g6104cc2f0b6-goog
