1ifdef CONFIG_KASAN 2ifdef CONFIG_KASAN_INLINE 3 call_threshold := 10000 4else 5 call_threshold := 0 6endif 7 8KASAN_SHADOW_OFFSET ?= $(CONFIG_KASAN_SHADOW_OFFSET) 9 10CFLAGS_KASAN_MINIMAL := -fsanitize=kernel-address 11 12CFLAGS_KASAN := $(call cc-option, -fsanitize=kernel-address \ 13 -fasan-shadow-offset=$(KASAN_SHADOW_OFFSET) \ 14 --param asan-stack=1 --param asan-globals=1 \ 15 --param asan-instrumentation-with-call-threshold=$(call_threshold)) 16 17ifeq ($(call cc-option, $(CFLAGS_KASAN_MINIMAL) -Werror),) 18 ifneq ($(CONFIG_COMPILE_TEST),y) 19 $(warning Cannot use CONFIG_KASAN: \ 20 -fsanitize=kernel-address is not supported by compiler) 21 endif 22else 23 ifeq ($(CFLAGS_KASAN),) 24 ifneq ($(CONFIG_COMPILE_TEST),y) 25 $(warning CONFIG_KASAN: compiler does not support all options.\ 26 Trying minimal configuration) 27 endif 28 CFLAGS_KASAN := $(CFLAGS_KASAN_MINIMAL) 29 endif 30endif 31endif 32