For opting functions out of sanitizer coverage, the "no_sanitize" attribute is used, but in GCC this wasn't introduced until GCC 8. Disable the sanitizer unless we're not using GCC, or it is GCC version 8 or higher.
Reported-by: kernel test robot <[email protected]> Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ Signed-off-by: Kees Cook <[email protected]> --- Cc: Marco Elver <[email protected]> Cc: Andrey Konovalov <[email protected]> Cc: Andrey Ryabinin <[email protected]> Cc: [email protected] Cc: [email protected] --- lib/Kconfig.ubsan | 2 ++ 1 file changed, 2 insertions(+) diff --git a/lib/Kconfig.ubsan b/lib/Kconfig.ubsan index 48a67058f84e..e81e1ac4a919 100644 --- a/lib/Kconfig.ubsan +++ b/lib/Kconfig.ubsan @@ -119,6 +119,8 @@ config UBSAN_SIGNED_WRAP bool "Perform checking for signed arithmetic wrap-around" default UBSAN depends on !COMPILE_TEST + # The no_sanitize attribute was introduced in GCC with version 8. + depends on !CC_IS_GCC || GCC_VERSION >= 80000 depends on $(cc-option,-fsanitize=signed-integer-overflow) help This option enables -fsanitize=signed-integer-overflow which checks -- 2.34.1
