ubsan: add trap instrumentation option

[mirror_ubuntu-hirsute-kernel.git] / scripts / Makefile.ubsan

# SPDX-License-Identifier: GPL-2.0
ifdef CONFIG_UBSAN

ifdef CONFIG_UBSAN_ALIGNMENT
      CFLAGS_UBSAN += $(call cc-option, -fsanitize=alignment)
endif

      CFLAGS_UBSAN += $(call cc-option, -fsanitize=shift)
      CFLAGS_UBSAN += $(call cc-option, -fsanitize=integer-divide-by-zero)
      CFLAGS_UBSAN += $(call cc-option, -fsanitize=unreachable)
      CFLAGS_UBSAN += $(call cc-option, -fsanitize=signed-integer-overflow)
      CFLAGS_UBSAN += $(call cc-option, -fsanitize=bounds)
      CFLAGS_UBSAN += $(call cc-option, -fsanitize=object-size)
      CFLAGS_UBSAN += $(call cc-option, -fsanitize=bool)
      CFLAGS_UBSAN += $(call cc-option, -fsanitize=enum)

ifdef CONFIG_UBSAN_TRAP
      CFLAGS_UBSAN += $(call cc-option, -fsanitize-undefined-trap-on-error)
endif

      # -fsanitize=* options makes GCC less smart than usual and
      # increase number of 'maybe-uninitialized false-positives
      CFLAGS_UBSAN += $(call cc-option, -Wno-maybe-uninitialized)
endif