blob: 2624d4bf9a4542be4f4d312fe029b47553d90805 [file] [log] [blame]
Andrey Ryabinin0b24bec2015-02-13 14:39:17 -08001ifdef CONFIG_KASAN
2ifdef CONFIG_KASAN_INLINE
3 call_threshold := 10000
4else
5 call_threshold := 0
6endif
7
Andrey Ryabinin39d114d2015-10-12 18:52:58 +03008KASAN_SHADOW_OFFSET ?= $(CONFIG_KASAN_SHADOW_OFFSET)
9
Andrey Ryabinin0b24bec2015-02-13 14:39:17 -080010CFLAGS_KASAN_MINIMAL := -fsanitize=kernel-address
11
12CFLAGS_KASAN := $(call cc-option, -fsanitize=kernel-address \
Andrey Ryabinin39d114d2015-10-12 18:52:58 +030013 -fasan-shadow-offset=$(KASAN_SHADOW_OFFSET) \
Andrey Ryabininbebf56a2015-02-13 14:40:17 -080014 --param asan-stack=1 --param asan-globals=1 \
Andrey Ryabinin0b24bec2015-02-13 14:39:17 -080015 --param asan-instrumentation-with-call-threshold=$(call_threshold))
16
17ifeq ($(call cc-option, $(CFLAGS_KASAN_MINIMAL) -Werror),)
Andrey Ryabinin6e54aba2015-04-16 12:44:58 -070018 ifneq ($(CONFIG_COMPILE_TEST),y)
Andrey Ryabinin0b24bec2015-02-13 14:39:17 -080019 $(warning Cannot use CONFIG_KASAN: \
20 -fsanitize=kernel-address is not supported by compiler)
Andrey Ryabinin6e54aba2015-04-16 12:44:58 -070021 endif
Andrey Ryabinin0b24bec2015-02-13 14:39:17 -080022else
23 ifeq ($(CFLAGS_KASAN),)
Andrey Ryabinin6e54aba2015-04-16 12:44:58 -070024 ifneq ($(CONFIG_COMPILE_TEST),y)
25 $(warning CONFIG_KASAN: compiler does not support all options.\
26 Trying minimal configuration)
27 endif
Andrey Ryabinin0b24bec2015-02-13 14:39:17 -080028 CFLAGS_KASAN := $(CFLAGS_KASAN_MINIMAL)
29 endif
30endif
Andrey Konovalov76b6f302018-02-06 15:36:00 -080031
32CFLAGS_KASAN_NOSANITIZE := -fno-builtin
33
Andrey Ryabinin0b24bec2015-02-13 14:39:17 -080034endif