From: Marco Elver <elver@xxxxxxxxxx> Subject: kasan: fix Kconfig check of CC_HAS_WORKING_NOSANITIZE_ADDRESS In the main KASAN config option CC_HAS_WORKING_NOSANITIZE_ADDRESS is checked for instrumentation-based modes. However, if HAVE_ARCH_KASAN_HW_TAGS is true all modes may still be selected. To fix, also make the software modes depend on CC_HAS_WORKING_NOSANITIZE_ADDRESS. Link: https://lkml.kernel.org/r/20210910084240.1215803-1-elver@xxxxxxxxxx Fixes: 6a63a63ff1ac ("kasan: introduce CONFIG_KASAN_HW_TAGS") Signed-off-by: Marco Elver <elver@xxxxxxxxxx> Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx> Cc: Alexander Potapenko <glider@xxxxxxxxxx> Cc: Andrey Konovalov <andreyknvl@xxxxxxxxx> Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx> Cc: Aleksandr Nogikh <nogikh@xxxxxxxxxx> Cc: Taras Madan <tarasmadan@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- lib/Kconfig.kasan | 2 ++ 1 file changed, 2 insertions(+) --- a/lib/Kconfig.kasan~kasan-fix-kconfig-check-of-cc_has_working_nosanitize_address +++ a/lib/Kconfig.kasan @@ -66,6 +66,7 @@ choice config KASAN_GENERIC bool "Generic mode" depends on HAVE_ARCH_KASAN && CC_HAS_KASAN_GENERIC + depends on CC_HAS_WORKING_NOSANITIZE_ADDRESS select SLUB_DEBUG if SLUB select CONSTRUCTORS help @@ -86,6 +87,7 @@ config KASAN_GENERIC config KASAN_SW_TAGS bool "Software tag-based mode" depends on HAVE_ARCH_KASAN_SW_TAGS && CC_HAS_KASAN_SW_TAGS + depends on CC_HAS_WORKING_NOSANITIZE_ADDRESS select SLUB_DEBUG if SLUB select CONSTRUCTORS help _
