# SPDX-License-Identifier: GPL-2.0ifdef CONFIG_KASANifdef CONFIG_KASAN_INLINE	call_threshold := 10000else	call_threshold := 0endif KASAN_SHADOW_OFFSET ?= $(CONFIG_KASAN_SHADOW_OFFSET) CFLAGS_KASAN_MINIMAL := -fsanitize=kernel-address cc-param = $(call cc-option, -mllvm -$(1), $(call cc-option, --param $(1))) ifeq ($(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)   endifelse   # -fasan-shadow-offset fails without -fsanitize   CFLAGS_KASAN_SHADOW := $(call cc-option, -fsanitize=kernel-address \			-fasan-shadow-offset=$(KASAN_SHADOW_OFFSET), \			$(call cc-option, -fsanitize=kernel-address \			-mllvm -asan-mapping-offset=$(KASAN_SHADOW_OFFSET)))    ifeq ($(strip $(CFLAGS_KASAN_SHADOW)),)      CFLAGS_KASAN := $(CFLAGS_KASAN_MINIMAL)   else      # Now add all the compiler specific options that are valid standalone      CFLAGS_KASAN := $(CFLAGS_KASAN_SHADOW) \	$(call cc-param,asan-globals=1) \	$(call cc-param,asan-instrumentation-with-call-threshold=$(call_threshold)) \	$(call cc-param,asan-stack=1) \	$(call cc-param,asan-use-after-scope=1) \	$(call cc-param,asan-instrument-allocas=1)   endif endif ifdef CONFIG_KASAN_EXTRACFLAGS_KASAN += $(call cc-option, -fsanitize-address-use-after-scope)endif CFLAGS_KASAN_NOSANITIZE := -fno-builtin endif