ee8f4a0ada
- Updates the fuzzer builds to use SANITIZE_TARGET='fuzzer' instead of 'coverage'. - Removed an old dependency that made fuzzer builds without ASan an error. - Fixed up the build flags to allow fuzzers to be built. Previously, the coverage flags were manually provided. As the toolchain has moved on, these flags are no longer compatible with libFuzzer, and so I've updated them to use the correct, compatible flags. Bug: 121042685 Test: With all patches in the bug merged, build a fuzzer using 'SANITIZE_TARGET=fuzzer mmma <your_fuzzer>'. Change-Id: I86e6a26d27c22b3622cf6ea8760f502f607df6f0
447 lines
17 KiB
Makefile
447 lines
17 KiB
Makefile
##############################################
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## Perform configuration steps for sanitizers.
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##############################################
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my_sanitize := $(strip $(LOCAL_SANITIZE))
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my_sanitize_diag := $(strip $(LOCAL_SANITIZE_DIAG))
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my_global_sanitize :=
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my_global_sanitize_diag :=
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ifdef LOCAL_IS_HOST_MODULE
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ifneq ($($(my_prefix)OS),windows)
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my_global_sanitize := $(strip $(SANITIZE_HOST))
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# SANITIZE_HOST=true is a deprecated way to say SANITIZE_HOST=address.
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my_global_sanitize := $(subst true,address,$(my_global_sanitize))
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endif
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else
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my_global_sanitize := $(strip $(SANITIZE_TARGET))
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my_global_sanitize_diag := $(strip $(SANITIZE_TARGET_DIAG))
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endif
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# Disable global integer_overflow in excluded paths.
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ifneq ($(filter integer_overflow, $(my_global_sanitize)),)
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combined_exclude_paths := $(INTEGER_OVERFLOW_EXCLUDE_PATHS) \
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$(PRODUCT_INTEGER_OVERFLOW_EXCLUDE_PATHS)
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ifneq ($(strip $(foreach dir,$(subst $(comma),$(space),$(combined_exclude_paths)),\
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$(filter $(dir)%,$(LOCAL_PATH)))),)
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my_global_sanitize := $(filter-out integer_overflow,$(my_global_sanitize))
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my_global_sanitize_diag := $(filter-out integer_overflow,$(my_global_sanitize_diag))
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endif
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endif
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# Global integer sanitization doesn't support static modules.
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ifeq ($(filter SHARED_LIBRARIES EXECUTABLES,$(LOCAL_MODULE_CLASS)),)
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my_global_sanitize := $(filter-out integer_overflow,$(my_global_sanitize))
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my_global_sanitize_diag := $(filter-out integer_overflow,$(my_global_sanitize_diag))
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endif
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ifeq ($(LOCAL_FORCE_STATIC_EXECUTABLE),true)
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my_global_sanitize := $(filter-out integer_overflow,$(my_global_sanitize))
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my_global_sanitize_diag := $(filter-out integer_overflow,$(my_global_sanitize_diag))
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endif
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# Disable global CFI in excluded paths
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ifneq ($(filter cfi, $(my_global_sanitize)),)
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combined_exclude_paths := $(CFI_EXCLUDE_PATHS) \
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$(PRODUCT_CFI_EXCLUDE_PATHS)
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ifneq ($(strip $(foreach dir,$(subst $(comma),$(space),$(combined_exclude_paths)),\
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$(filter $(dir)%,$(LOCAL_PATH)))),)
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my_global_sanitize := $(filter-out cfi,$(my_global_sanitize))
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my_global_sanitize_diag := $(filter-out cfi,$(my_global_sanitize_diag))
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endif
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endif
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ifneq ($(my_global_sanitize),)
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my_sanitize := $(my_global_sanitize) $(my_sanitize)
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endif
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ifneq ($(my_global_sanitize_diag),)
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my_sanitize_diag := $(my_global_sanitize_diag) $(my_sanitize_diag)
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endif
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# The sanitizer specified in the product configuration wins over the previous.
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ifneq ($(SANITIZER.$(TARGET_PRODUCT).$(LOCAL_MODULE).CONFIG),)
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my_sanitize := $(SANITIZER.$(TARGET_PRODUCT).$(LOCAL_MODULE).CONFIG)
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ifeq ($(my_sanitize),never)
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my_sanitize :=
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my_sanitize_diag :=
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endif
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endif
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ifndef LOCAL_IS_HOST_MODULE
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# Add a filter point for 32-bit vs 64-bit sanitization (to lighten the burden)
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SANITIZE_TARGET_ARCH ?= $(TARGET_ARCH) $(TARGET_2ND_ARCH)
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ifeq ($(filter $(SANITIZE_TARGET_ARCH),$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)),)
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my_sanitize :=
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my_sanitize_diag :=
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endif
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endif
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# Add a filter point based on module owner (to lighten the burden). The format is a space- or
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# colon-separated list of owner names.
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ifneq (,$(SANITIZE_NEVER_BY_OWNER))
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ifneq (,$(LOCAL_MODULE_OWNER))
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ifneq (,$(filter $(LOCAL_MODULE_OWNER),$(subst :, ,$(SANITIZE_NEVER_BY_OWNER))))
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$(warning Not sanitizing $(LOCAL_MODULE) based on module owner.)
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my_sanitize :=
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my_sanitize_diag :=
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endif
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endif
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endif
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# Don't apply sanitizers to NDK code.
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ifdef LOCAL_SDK_VERSION
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my_sanitize :=
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my_global_sanitize :=
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my_sanitize_diag :=
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endif
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# Never always wins.
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ifeq ($(LOCAL_SANITIZE),never)
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my_sanitize :=
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my_sanitize_diag :=
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endif
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# Enable CFI in included paths (for Arm64 only).
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ifeq ($(filter cfi, $(my_sanitize)),)
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ifneq ($(filter arm64,$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)),)
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combined_include_paths := $(CFI_INCLUDE_PATHS) \
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$(PRODUCT_CFI_INCLUDE_PATHS)
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ifneq ($(strip $(foreach dir,$(subst $(comma),$(space),$(combined_include_paths)),\
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$(filter $(dir)%,$(LOCAL_PATH)))),)
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my_sanitize := cfi $(my_sanitize)
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endif
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endif
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endif
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# If CFI is disabled globally, remove it from my_sanitize.
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ifeq ($(strip $(ENABLE_CFI)),false)
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my_sanitize := $(filter-out cfi,$(my_sanitize))
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my_sanitize_diag := $(filter-out cfi,$(my_sanitize_diag))
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endif
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# Disable CFI for arm32 (b/35157333).
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ifneq ($(filter arm,$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)),)
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my_sanitize := $(filter-out cfi,$(my_sanitize))
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my_sanitize_diag := $(filter-out cfi,$(my_sanitize_diag))
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endif
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# Also disable CFI if ASAN is enabled.
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ifneq ($(filter address,$(my_sanitize)),)
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my_sanitize := $(filter-out cfi,$(my_sanitize))
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my_sanitize_diag := $(filter-out cfi,$(my_sanitize_diag))
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endif
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# CFI needs gold linker, and mips toolchain does not have one.
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ifneq ($(filter mips mips64,$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)),)
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my_sanitize := $(filter-out cfi,$(my_sanitize))
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my_sanitize_diag := $(filter-out cfi,$(my_sanitize_diag))
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endif
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# Disable sanitizers which need the UBSan runtime for host targets.
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ifdef LOCAL_IS_HOST_MODULE
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my_sanitize := $(filter-out cfi,$(my_sanitize))
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my_sanitize_diag := $(filter-out cfi,$(my_sanitize_diag))
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my_sanitize := $(filter-out signed-integer-overflow unsigned-integer-overflow integer_overflow,$(my_sanitize))
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my_sanitize_diag := $(filter-out signed-integer-overflow unsigned-integer-overflow integer_overflow,$(my_sanitize_diag))
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endif
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# Support for local sanitize blacklist paths.
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ifneq ($(my_sanitize)$(my_global_sanitize),)
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ifneq ($(LOCAL_SANITIZE_BLACKLIST),)
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my_cflags += -fsanitize-blacklist=$(LOCAL_PATH)/$(LOCAL_SANITIZE_BLACKLIST)
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endif
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endif
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# Disable integer_overflow if LOCAL_NOSANITIZE=integer.
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ifneq ($(filter integer_overflow, $(my_global_sanitize) $(my_sanitize)),)
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ifneq ($(filter integer, $(strip $(LOCAL_NOSANITIZE))),)
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my_sanitize := $(filter-out integer_overflow,$(my_sanitize))
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my_sanitize_diag := $(filter-out integer_overflow,$(my_sanitize_diag))
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endif
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endif
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my_nosanitize = $(strip $(LOCAL_NOSANITIZE))
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ifneq ($(my_nosanitize),)
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my_sanitize := $(filter-out $(my_nosanitize),$(my_sanitize))
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endif
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ifneq ($(filter arm x86 x86_64,$(TARGET_$(LOCAL_2ND_ARCH_VAR_PREFIX)ARCH)),)
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my_sanitize := $(filter-out hwaddress,$(my_sanitize))
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endif
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ifneq ($(filter hwaddress,$(my_sanitize)),)
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my_sanitize := $(filter-out address,$(my_sanitize))
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my_sanitize := $(filter-out thread,$(my_sanitize))
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my_sanitize := $(filter-out cfi,$(my_sanitize))
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endif
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ifneq ($(filter hwaddress,$(my_sanitize)),)
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my_shared_libraries += $($(LOCAL_2ND_ARCH_VAR_PREFIX)HWADDRESS_SANITIZER_RUNTIME_LIBRARY)
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ifneq ($(filter EXECUTABLES NATIVE_TESTS,$(LOCAL_MODULE_CLASS)),)
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ifeq ($(LOCAL_FORCE_STATIC_EXECUTABLE),true)
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my_static_libraries := $(my_static_libraries) $($(LOCAL_2ND_ARCH_VAR_PREFIX)HWADDRESS_SANITIZER_STATIC_LIBRARY)
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endif
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endif
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endif
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# TSAN is not supported on 32-bit architectures. For non-multilib cases, make
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# its use an error. For multilib cases, don't use it for the 32-bit case.
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ifneq ($(filter thread,$(my_sanitize)),)
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ifeq ($(my_32_64_bit_suffix),32)
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ifeq ($(my_module_multilib),both)
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my_sanitize := $(filter-out thread,$(my_sanitize))
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else
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$(error $(LOCAL_PATH): $(LOCAL_MODULE): TSAN cannot be used for 32-bit modules.)
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endif
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else
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my_shared_libraries += $(TSAN_RUNTIME_LIBRARY)
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endif
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endif
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ifneq ($(filter safe-stack,$(my_sanitize)),)
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ifeq ($(my_32_64_bit_suffix),32)
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my_sanitize := $(filter-out safe-stack,$(my_sanitize))
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endif
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endif
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# Disable Scudo if ASan or TSan is enabled.
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ifneq ($(filter address thread hwaddress,$(my_sanitize)),)
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my_sanitize := $(filter-out scudo,$(my_sanitize))
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endif
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# Or if disabled globally.
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ifeq ($(PRODUCT_DISABLE_SCUDO),true)
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my_sanitize := $(filter-out scudo,$(my_sanitize))
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endif
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# Undefined symbols can occur if a non-sanitized library links
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# sanitized static libraries. That's OK, because the executable
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# always depends on the ASan runtime library, which defines these
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# symbols.
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ifneq ($(filter address thread,$(strip $(SANITIZE_TARGET))),)
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ifndef LOCAL_IS_HOST_MODULE
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ifeq ($(LOCAL_MODULE_CLASS),SHARED_LIBRARIES)
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ifeq ($(my_sanitize),)
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my_allow_undefined_symbols := true
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endif
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endif
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endif
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endif
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ifneq ($(filter default-ub,$(my_sanitize)),)
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my_sanitize := $(CLANG_DEFAULT_UB_CHECKS)
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endif
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ifneq ($(filter fuzzer,$(my_sanitize)),)
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# SANITIZE_TARGET='fuzzer' actually means to create the fuzzer coverage
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# information, not to link against the fuzzer main().
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my_sanitize := $(filter-out fuzzer,$(my_sanitize))
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my_sanitize += fuzzer-no-link
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# TODO(b/131771163): Disable LTO for fuzzer builds. Note that Cfi causes
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# dependency on LTO.
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my_sanitize := $(filter-out cfi,$(my_sanitize))
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my_cflags += -fno-lto
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my_ldflags += -fno-lto
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endif
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ifneq ($(filter integer_overflow,$(my_sanitize)),)
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# Respect LOCAL_NOSANITIZE for integer-overflow flags.
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ifeq ($(filter signed-integer-overflow, $(strip $(LOCAL_NOSANITIZE))),)
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my_sanitize += signed-integer-overflow
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endif
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ifeq ($(filter unsigned-integer-overflow, $(strip $(LOCAL_NOSANITIZE))),)
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my_sanitize += unsigned-integer-overflow
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endif
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my_cflags += $(INTEGER_OVERFLOW_EXTRA_CFLAGS)
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# Check for diagnostics mode.
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ifneq ($(filter integer_overflow,$(my_sanitize_diag)),)
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ifneq ($(filter SHARED_LIBRARIES EXECUTABLES,$(LOCAL_MODULE_CLASS)),)
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ifneq ($(LOCAL_FORCE_STATIC_EXECUTABLE),true)
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my_sanitize_diag += signed-integer-overflow
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my_sanitize_diag += unsigned-integer-overflow
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else
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$(call pretty-error,Make cannot apply integer overflow diagnostics to static binary.)
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endif
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else
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$(call pretty-error,Make cannot apply integer overflow diagnostics to static library.)
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endif
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endif
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my_sanitize := $(filter-out integer_overflow,$(my_sanitize))
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endif
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# Makes sure integer_overflow diagnostics is removed from the diagnostics list
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# even if integer_overflow is not set for some reason.
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ifneq ($(filter integer_overflow,$(my_sanitize_diag)),)
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my_sanitize_diag := $(filter-out integer_overflow,$(my_sanitize_diag))
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endif
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ifneq ($(my_sanitize),)
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fsanitize_arg := $(subst $(space),$(comma),$(my_sanitize))
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my_cflags += -fsanitize=$(fsanitize_arg)
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my_asflags += -fsanitize=$(fsanitize_arg)
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# When fuzzing, we wish to crash with diagnostics on any bug.
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ifneq ($(filter fuzzer-no-link,$(my_sanitize)),)
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my_cflags += -fno-sanitize-trap=all
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my_cflags += -fno-sanitize-recover=all
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my_ldflags += -fsanitize=fuzzer-no-link
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else ifdef LOCAL_IS_HOST_MODULE
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my_cflags += -fno-sanitize-recover=all
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my_ldflags += -fsanitize=$(fsanitize_arg)
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else
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my_cflags += -fsanitize-trap=all
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my_cflags += -ftrap-function=abort
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ifneq ($(filter address thread,$(my_sanitize)),)
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my_cflags += -fno-sanitize-trap=address,thread
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my_shared_libraries += libdl
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endif
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endif
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endif
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ifneq ($(filter cfi,$(my_sanitize)),)
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# __cfi_check needs to be built as Thumb (see the code in linker_cfi.cpp).
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# LLVM is not set up to do this on a function basis, so force Thumb on the
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# entire module.
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LOCAL_ARM_MODE := thumb
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my_cflags += $(CFI_EXTRA_CFLAGS)
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my_asflags += $(CFI_EXTRA_ASFLAGS)
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# Only append the default visibility flag if -fvisibility has not already been
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# set to hidden.
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ifeq ($(filter -fvisibility=hidden,$(LOCAL_CFLAGS)),)
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my_cflags += -fvisibility=default
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endif
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my_ldflags += $(CFI_EXTRA_LDFLAGS)
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my_arflags += --plugin $(LLVM_PREBUILTS_PATH)/../lib64/LLVMgold.so
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ifeq ($(LOCAL_FORCE_STATIC_EXECUTABLE),true)
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my_ldflags := $(filter-out -fsanitize-cfi-cross-dso,$(my_ldflags))
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my_cflags := $(filter-out -fsanitize-cfi-cross-dso,$(my_cflags))
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else
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# Apply the version script to non-static executables
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my_ldflags += -Wl,--version-script,build/soong/cc/config/cfi_exports.map
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LOCAL_ADDITIONAL_DEPENDENCIES += build/soong/cc/config/cfi_exports.map
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endif
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endif
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# If local or global modules need ASAN, add linker flags.
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ifneq ($(filter address,$(my_global_sanitize) $(my_sanitize)),)
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my_ldflags += $(ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS)
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ifdef LOCAL_IS_HOST_MODULE
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# -nodefaultlibs (provided with libc++) prevents the driver from linking
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# libraries needed with -fsanitize=address. http://b/18650275 (WAI)
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my_ldflags += -Wl,--no-as-needed
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else
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# Add asan libraries unless LOCAL_MODULE is the asan library.
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# ASan runtime library must be the first in the link order.
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ifeq (,$(filter $(LOCAL_MODULE),$($(LOCAL_2ND_ARCH_VAR_PREFIX)ADDRESS_SANITIZER_RUNTIME_LIBRARY)))
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my_shared_libraries := $($(LOCAL_2ND_ARCH_VAR_PREFIX)ADDRESS_SANITIZER_RUNTIME_LIBRARY) \
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$(my_shared_libraries)
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endif
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ifeq (,$(filter $(LOCAL_MODULE),$(ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES)))
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my_static_libraries += $(ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES)
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endif
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# Do not add unnecessary dependency in shared libraries.
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ifeq ($(LOCAL_MODULE_CLASS),SHARED_LIBRARIES)
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my_ldflags += -Wl,--as-needed
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endif
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ifneq ($(filter EXECUTABLES NATIVE_TESTS,$(LOCAL_MODULE_CLASS)),)
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ifneq ($(LOCAL_FORCE_STATIC_EXECUTABLE),true)
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my_linker := $($(LOCAL_2ND_ARCH_VAR_PREFIX)ADDRESS_SANITIZER_LINKER)
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# Make sure linker_asan get installed.
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$(LOCAL_INSTALLED_MODULE) : | $(PRODUCT_OUT)$($(LOCAL_2ND_ARCH_VAR_PREFIX)ADDRESS_SANITIZER_LINKER_FILE)
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endif
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endif
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endif
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endif
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# If local module needs ASAN, add compiler flags.
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ifneq ($(filter address,$(my_sanitize)),)
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# Frame pointer based unwinder in ASan requires ARM frame setup.
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LOCAL_ARM_MODE := arm
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my_cflags += $(ADDRESS_SANITIZER_CONFIG_EXTRA_CFLAGS)
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ifndef LOCAL_IS_HOST_MODULE
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my_cflags += -mllvm -asan-globals=0
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endif
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endif
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# If local module needs HWASAN, add compiler flags.
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ifneq ($(filter hwaddress,$(my_sanitize)),)
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my_cflags += $(HWADDRESS_SANITIZER_CONFIG_EXTRA_CFLAGS)
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endif
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# Use minimal diagnostics when integer overflow is enabled; never do it for HOST or AUX modules
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ifeq ($(LOCAL_IS_HOST_MODULE)$(LOCAL_IS_AUX_MODULE),)
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# Pre-emptively add UBSAN minimal runtime incase a static library dependency requires it
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ifeq ($(filter STATIC_LIBRARIES,$(LOCAL_MODULE_CLASS)),)
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ifndef LOCAL_SDK_VERSION
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my_static_libraries += $($(LOCAL_2ND_ARCH_VAR_PREFIX)UBSAN_MINIMAL_RUNTIME_LIBRARY)
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my_ldflags += -Wl,--exclude-libs,$($(LOCAL_2ND_ARCH_VAR_PREFIX)UBSAN_MINIMAL_RUNTIME_LIBRARY).a
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endif
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endif
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ifneq ($(filter unsigned-integer-overflow signed-integer-overflow integer,$(my_sanitize)),)
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ifeq ($(filter unsigned-integer-overflow signed-integer-overflow integer,$(my_sanitize_diag)),)
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ifeq ($(filter cfi,$(my_sanitize_diag)),)
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ifeq ($(filter address hwaddress fuzzer-no-link,$(my_sanitize)),)
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my_cflags += -fsanitize-minimal-runtime
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my_cflags += -fno-sanitize-trap=integer
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my_cflags += -fno-sanitize-recover=integer
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endif
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endif
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endif
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endif
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endif
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# For Scudo, we opt for the minimal runtime, unless some diagnostics are enabled.
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ifneq ($(filter scudo,$(my_sanitize)),)
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ifeq ($(filter unsigned-integer-overflow signed-integer-overflow integer cfi,$(my_sanitize_diag)),)
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my_cflags += -fsanitize-minimal-runtime
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endif
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ifneq ($(filter -fsanitize-minimal-runtime,$(my_cflags)),)
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my_shared_libraries += $($(LOCAL_2ND_ARCH_VAR_PREFIX)SCUDO_MINIMAL_RUNTIME_LIBRARY)
|
|
else
|
|
my_shared_libraries += $($(LOCAL_2ND_ARCH_VAR_PREFIX)SCUDO_RUNTIME_LIBRARY)
|
|
endif
|
|
endif
|
|
|
|
ifneq ($(strip $(LOCAL_SANITIZE_RECOVER)),)
|
|
recover_arg := $(subst $(space),$(comma),$(LOCAL_SANITIZE_RECOVER)),
|
|
my_cflags += -fsanitize-recover=$(recover_arg)
|
|
endif
|
|
|
|
ifneq ($(strip $(LOCAL_SANITIZE_NO_RECOVER)),)
|
|
no_recover_arg := $(subst $(space),$(comma),$(LOCAL_SANITIZE_NO_RECOVER)),
|
|
my_cflags += -fno-sanitize-recover=$(no_recover_arg)
|
|
endif
|
|
|
|
ifneq ($(my_sanitize_diag),)
|
|
# TODO(vishwath): Add diagnostic support for static executables once
|
|
# we switch to clang-4393122 (which adds the static ubsan runtime
|
|
# that this depends on)
|
|
ifneq ($(LOCAL_FORCE_STATIC_EXECUTABLE),true)
|
|
notrap_arg := $(subst $(space),$(comma),$(my_sanitize_diag)),
|
|
my_cflags += -fno-sanitize-trap=$(notrap_arg)
|
|
# Diagnostic requires a runtime library, unless ASan or TSan are also enabled.
|
|
ifeq ($(filter address thread scudo hwaddress,$(my_sanitize)),)
|
|
# Does not have to be the first DT_NEEDED unlike ASan.
|
|
my_shared_libraries += $($(LOCAL_2ND_ARCH_VAR_PREFIX)UBSAN_RUNTIME_LIBRARY)
|
|
endif
|
|
endif
|
|
endif
|
|
|
|
# http://b/119329758, Android core does not boot up with this sanitizer yet.
|
|
# Previously sanitized modules might not pass new implicit-integer-sign-change check.
|
|
# Disable this check unless it has been explicitly specified.
|
|
ifneq ($(findstring fsanitize,$(my_cflags)),)
|
|
ifneq ($(findstring integer,$(my_cflags)),)
|
|
ifeq ($(findstring sanitize=implicit-integer-sign-change,$(my_cflags)),)
|
|
my_cflags += -fno-sanitize=implicit-integer-sign-change
|
|
endif
|
|
endif
|
|
endif
|