1# SPDX-License-Identifier: GPL-2.0 2 3# Shared with KVM/arm64. 4export CFLAGS_UBSAN_TRAP := $(call cc-option,-fsanitize-trap=undefined,-fsanitize-undefined-trap-on-error) 5 6# Enable available and selected UBSAN features. 7ubsan-cflags-$(CONFIG_UBSAN_ALIGNMENT) += -fsanitize=alignment 8ubsan-cflags-$(CONFIG_UBSAN_BOUNDS_STRICT) += -fsanitize=bounds-strict 9ubsan-cflags-$(CONFIG_UBSAN_ARRAY_BOUNDS) += -fsanitize=array-bounds 10ubsan-cflags-$(CONFIG_UBSAN_LOCAL_BOUNDS) += -fsanitize=local-bounds 11ubsan-cflags-$(CONFIG_UBSAN_SHIFT) += -fsanitize=shift 12ubsan-cflags-$(CONFIG_UBSAN_DIV_ZERO) += -fsanitize=integer-divide-by-zero 13ubsan-cflags-$(CONFIG_UBSAN_UNREACHABLE) += -fsanitize=unreachable 14ubsan-cflags-$(CONFIG_UBSAN_BOOL) += -fsanitize=bool 15ubsan-cflags-$(CONFIG_UBSAN_ENUM) += -fsanitize=enum 16ubsan-cflags-$(CONFIG_UBSAN_TRAP) += $(CFLAGS_UBSAN_TRAP) 17 18export CFLAGS_UBSAN := $(ubsan-cflags-y) 19 20ubsan-integer-wrap-cflags-$(CONFIG_UBSAN_INTEGER_WRAP) += \ 21 -fsanitize-undefined-ignore-overflow-pattern=all \ 22 -fsanitize=signed-integer-overflow \ 23 -fsanitize=unsigned-integer-overflow \ 24 -fsanitize=implicit-signed-integer-truncation \ 25 -fsanitize=implicit-unsigned-integer-truncation \ 26 -fsanitize-ignorelist=$(srctree)/scripts/integer-wrap-ignore.scl 27export CFLAGS_UBSAN_INTEGER_WRAP := $(ubsan-integer-wrap-cflags-y) 28