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-rw-r--r--scripts/Makefile.kasan24
1 files changed, 24 insertions, 0 deletions
diff --git a/scripts/Makefile.kasan b/scripts/Makefile.kasan
new file mode 100644
index 000000000000..7acd6faa0335
--- /dev/null
+++ b/scripts/Makefile.kasan
@@ -0,0 +1,24 @@
+ifdef CONFIG_KASAN
+ifdef CONFIG_KASAN_INLINE
+ call_threshold := 10000
+else
+ call_threshold := 0
+endif
+
+CFLAGS_KASAN_MINIMAL := -fsanitize=kernel-address
+
+CFLAGS_KASAN := $(call cc-option, -fsanitize=kernel-address \
+ -fasan-shadow-offset=$(CONFIG_KASAN_SHADOW_OFFSET) \
+ --param asan-instrumentation-with-call-threshold=$(call_threshold))
+
+ifeq ($(call cc-option, $(CFLAGS_KASAN_MINIMAL) -Werror),)
+ $(warning Cannot use CONFIG_KASAN: \
+ -fsanitize=kernel-address is not supported by compiler)
+else
+ ifeq ($(CFLAGS_KASAN),)
+ $(warning CONFIG_KASAN: compiler does not support all options.\
+ Trying minimal configuration)
+ CFLAGS_KASAN := $(CFLAGS_KASAN_MINIMAL)
+ endif
+endif
+endif

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