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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[mirror_ubuntu-zesty-kernel.git] / scripts / Makefile.kasan
1 ifdef CONFIG_KASAN
2 ifdef CONFIG_KASAN_INLINE
3 call_threshold := 10000
4 else
5 call_threshold := 0
6 endif
7
8 KASAN_SHADOW_OFFSET ?= $(CONFIG_KASAN_SHADOW_OFFSET)
9
10 CFLAGS_KASAN_MINIMAL := -fsanitize=kernel-address
11
12 CFLAGS_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=$(call_threshold))
16
17 ifeq ($(call cc-option, $(CFLAGS_KASAN_MINIMAL) -Werror),)
18 ifneq ($(CONFIG_COMPILE_TEST),y)
19 $(warning Cannot use CONFIG_KASAN: \
20 -fsanitize=kernel-address is not supported by compiler)
21 endif
22 else
23 ifeq ($(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
30 endif
31 endif