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 CFLAGS_KASAN_MINIMAL := -fsanitize=kernel-address
   9
  10 CFLAGS_KASAN := $(call cc-option, -fsanitize=kernel-address \
  11                 -fasan-shadow-offset=$(CONFIG_KASAN_SHADOW_OFFSET) \
  12                 --param asan-stack=1 --param asan-globals=1 \
  13                 --param asan-instrumentation-with-call-threshold=$(call_threshold))
  14
  15 ifeq ($(call cc-option, $(CFLAGS_KASAN_MINIMAL) -Werror),)
  16    ifneq ($(CONFIG_COMPILE_TEST),y)
  17         $(warning Cannot use CONFIG_KASAN: \
  18             -fsanitize=kernel-address is not supported by compiler)
  19    endif
  20 else
  21     ifeq ($(CFLAGS_KASAN),)
  22         ifneq ($(CONFIG_COMPILE_TEST),y)
  23             $(warning CONFIG_KASAN: compiler does not support all options.\
  24                 Trying minimal configuration)
  25         endif
  26         CFLAGS_KASAN := $(CFLAGS_KASAN_MINIMAL)
  27     endif
  28 endif
  29 endif