1# SPDX-License-Identifier: GPL-2.0 2 3export CFLAGS_UBSAN := 4 5ifdef CONFIG_UBSAN_ALIGNMENT 6 CFLAGS_UBSAN += $(call cc-option, -fsanitize=alignment) 7endif 8 9ifdef CONFIG_UBSAN_BOUNDS 10 ifdef CONFIG_CC_IS_CLANG 11 CFLAGS_UBSAN += -fsanitize=array-bounds 12 else 13 CFLAGS_UBSAN += $(call cc-option, -fsanitize=bounds) 14 endif 15endif 16 17ifdef CONFIG_UBSAN_LOCAL_BOUNDS 18 CFLAGS_UBSAN += -fsanitize=local-bounds 19endif 20 21ifdef CONFIG_UBSAN_MISC 22 CFLAGS_UBSAN += $(call cc-option, -fsanitize=shift) 23 CFLAGS_UBSAN += $(call cc-option, -fsanitize=integer-divide-by-zero) 24 CFLAGS_UBSAN += $(call cc-option, -fsanitize=unreachable) 25 CFLAGS_UBSAN += $(call cc-option, -fsanitize=signed-integer-overflow) 26 CFLAGS_UBSAN += $(call cc-option, -fsanitize=object-size) 27 CFLAGS_UBSAN += $(call cc-option, -fsanitize=bool) 28 CFLAGS_UBSAN += $(call cc-option, -fsanitize=enum) 29endif 30 31ifdef CONFIG_UBSAN_TRAP 32 CFLAGS_UBSAN += $(call cc-option, -fsanitize-undefined-trap-on-error) 33endif 34 35 # -fsanitize=* options makes GCC less smart than usual and 36 # increase number of 'maybe-uninitialized false-positives 37 CFLAGS_UBSAN += $(call cc-option, -Wno-maybe-uninitialized) 38