diff options
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/Makefile.kcsan | 6 | ||||
| -rw-r--r-- | scripts/Makefile.lib | 10 | ||||
| -rwxr-xr-x | scripts/atomic/gen-atomic-instrumented.sh | 17 |
3 files changed, 31 insertions, 2 deletions
diff --git a/scripts/Makefile.kcsan b/scripts/Makefile.kcsan new file mode 100644 index 000000000000..caf1111a28ae --- /dev/null +++ b/scripts/Makefile.kcsan @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0 +ifdef CONFIG_KCSAN + +CFLAGS_KCSAN := -fsanitize=thread + +endif # CONFIG_KCSAN diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 3fa32f83b2d7..587a7d03c4cd 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -138,6 +138,16 @@ _c_flags += $(if $(patsubst n%,, \ $(CFLAGS_KCOV)) endif +# +# Enable KCSAN flags except some files or directories we don't want to check +# (depends on variables KCSAN_SANITIZE_obj.o, KCSAN_SANITIZE) +# +ifeq ($(CONFIG_KCSAN),y) +_c_flags += $(if $(patsubst n%,, \ + $(KCSAN_SANITIZE_$(basetarget).o)$(KCSAN_SANITIZE)y), \ + $(CFLAGS_KCSAN)) +endif + # $(srctree)/$(src) for including checkin headers from generated source files # $(objtree)/$(obj) for including generated headers from checkin source files ifeq ($(KBUILD_EXTMOD),) diff --git a/scripts/atomic/gen-atomic-instrumented.sh b/scripts/atomic/gen-atomic-instrumented.sh index e09812372b17..8b8b2a6f8d68 100755 --- a/scripts/atomic/gen-atomic-instrumented.sh +++ b/scripts/atomic/gen-atomic-instrumented.sh @@ -20,7 +20,7 @@ gen_param_check() # We don't write to constant parameters [ ${type#c} != ${type} ] && rw="read" - printf "\tkasan_check_${rw}(${name}, sizeof(*${name}));\n" + printf "\t__atomic_check_${rw}(${name}, sizeof(*${name}));\n" } #gen_param_check(arg...) @@ -107,7 +107,7 @@ cat <<EOF #define ${xchg}(ptr, ...) \\ ({ \\ typeof(ptr) __ai_ptr = (ptr); \\ - kasan_check_write(__ai_ptr, ${mult}sizeof(*__ai_ptr)); \\ + __atomic_check_write(__ai_ptr, ${mult}sizeof(*__ai_ptr)); \\ arch_${xchg}(__ai_ptr, __VA_ARGS__); \\ }) EOF @@ -148,6 +148,19 @@ cat << EOF #include <linux/build_bug.h> #include <linux/kasan-checks.h> +#include <linux/kcsan-checks.h> + +static inline void __atomic_check_read(const volatile void *v, size_t size) +{ + kasan_check_read(v, size); + kcsan_check_atomic_read(v, size); +} + +static inline void __atomic_check_write(const volatile void *v, size_t size) +{ + kasan_check_write(v, size); + kcsan_check_atomic_write(v, size); +} EOF |