| 123456789101112131415161718192021222324252627282930313233343536373839404142 |
- 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
- 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)
- endif
- else
- # -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
- CFLAGS_KASAN_NOSANITIZE := -fno-builtin
- endif
|
