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85f195b12d
The tests for memset/memmove have been failing since they haven't been instrumented in69d4c0d321. Fix the test to recognize when memintrinsics aren't instrumented, and skip test cases accordingly. We also need to conditionally pass -fno-builtin to the test, otherwise the instrumentation pass won't recognize memintrinsics and end up not instrumenting them either. Link: https://lkml.kernel.org/r/20230224085942.1791837-3-elver@google.com Fixes:69d4c0d321("entry, kasan, x86: Disallow overriding mem*() functions") Reported-by: Linux Kernel Functional Testing <lkft@linaro.org> Signed-off-by: Marco Elver <elver@google.com> Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Tested-by: Linux Kernel Functional Testing <lkft@linaro.org> Tested-by: Naresh Kamboju <naresh.kamboju@linaro.org> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Borislav Petkov (AMD) <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jakub Jelinek <jakub@redhat.com> Cc: Kees Cook <keescook@chromium.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Nicolas Schier <nicolas@fjasle.eu> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
57 lines
2.4 KiB
Makefile
57 lines
2.4 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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KASAN_SANITIZE := n
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UBSAN_SANITIZE := n
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KCOV_INSTRUMENT := n
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# Disable ftrace to avoid recursion.
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CFLAGS_REMOVE_common.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_generic.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_init.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_quarantine.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_report.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_report_generic.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_report_hw_tags.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_report_sw_tags.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_shadow.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_hw_tags.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_sw_tags.o = $(CC_FLAGS_FTRACE)
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# Function splitter causes unnecessary splits in __asan_load1/__asan_store1
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# see: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63533
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CC_FLAGS_KASAN_RUNTIME := $(call cc-option, -fno-conserve-stack)
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CC_FLAGS_KASAN_RUNTIME += -fno-stack-protector
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# Disable branch tracing to avoid recursion.
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CC_FLAGS_KASAN_RUNTIME += -DDISABLE_BRANCH_PROFILING
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CFLAGS_common.o := $(CC_FLAGS_KASAN_RUNTIME)
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CFLAGS_generic.o := $(CC_FLAGS_KASAN_RUNTIME)
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CFLAGS_init.o := $(CC_FLAGS_KASAN_RUNTIME)
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CFLAGS_quarantine.o := $(CC_FLAGS_KASAN_RUNTIME)
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CFLAGS_report.o := $(CC_FLAGS_KASAN_RUNTIME)
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CFLAGS_report_generic.o := $(CC_FLAGS_KASAN_RUNTIME)
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CFLAGS_report_hw_tags.o := $(CC_FLAGS_KASAN_RUNTIME)
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CFLAGS_report_sw_tags.o := $(CC_FLAGS_KASAN_RUNTIME)
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CFLAGS_shadow.o := $(CC_FLAGS_KASAN_RUNTIME)
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CFLAGS_hw_tags.o := $(CC_FLAGS_KASAN_RUNTIME)
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CFLAGS_sw_tags.o := $(CC_FLAGS_KASAN_RUNTIME)
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CFLAGS_KASAN_TEST := $(CFLAGS_KASAN) $(call cc-disable-warning, vla)
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ifndef CONFIG_CC_HAS_KASAN_MEMINTRINSIC_PREFIX
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# If compiler instruments memintrinsics by prefixing them with __asan/__hwasan,
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# we need to treat them normally (as builtins), otherwise the compiler won't
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# recognize them as instrumentable. If it doesn't instrument them, we need to
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# pass -fno-builtin, so the compiler doesn't inline them.
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CFLAGS_KASAN_TEST += -fno-builtin
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endif
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CFLAGS_kasan_test.o := $(CFLAGS_KASAN_TEST)
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CFLAGS_kasan_test_module.o := $(CFLAGS_KASAN_TEST)
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obj-y := common.o report.o
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obj-$(CONFIG_KASAN_GENERIC) += init.o generic.o report_generic.o shadow.o quarantine.o
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obj-$(CONFIG_KASAN_HW_TAGS) += hw_tags.o report_hw_tags.o tags.o report_tags.o
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obj-$(CONFIG_KASAN_SW_TAGS) += init.o report_sw_tags.o shadow.o sw_tags.o tags.o report_tags.o
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obj-$(CONFIG_KASAN_KUNIT_TEST) += kasan_test.o
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obj-$(CONFIG_KASAN_MODULE_TEST) += kasan_test_module.o
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