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scripts/Makefile.kasan
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# SPDX-License-Identifier: GPL-2.0 ifdef CONFIG_KASAN ifdef CONFIG_KASAN_INLINE call_threshold := 10000 else call_threshold := 0 endif KASAN_SHADOW_OFFSET ?= $(CONFIG_KASAN_SHADOW_OFFSET) CFLAGS_KASAN_MINIMAL := -fsanitize=kernel-address CFLAGS_KASAN := $(call cc-option, -fsanitize=kernel-address \ -fasan-shadow-offset=$(KASAN_SHADOW_OFFSET) \ --param asan-stack=1 --param asan-globals=1 \ --param asan-instrumentation-with-call-threshold=$(call_threshold)) ifeq ($(call cc-option, $(CFLAGS_KASAN_MINIMAL) -Werror),) ifneq ($(CONFIG_COMPILE_TEST),y) $(warning Cannot use CONFIG_KASAN: \ -fsanitize=kernel-address is not supported by compiler) endif else ifeq ($(CFLAGS_KASAN),) ifneq ($(CONFIG_COMPILE_TEST),y) $(warning CONFIG_KASAN: compiler does not support all options.\ Trying minimal configuration) endif CFLAGS_KASAN := $(CFLAGS_KASAN_MINIMAL) endif endif ifdef CONFIG_KASAN_EXTRA CFLAGS_KASAN += $(call cc-option, -fsanitize-address-use-after-scope) endif CFLAGS_KASAN_NOSANITIZE := -fno-builtin endif |