From: Martin Liska <mliska@xxxxxxx> The function memory_is_poisoned() can handle any size which can be propagated by LTO later on. So we can end up with a constant that is not handled in the switch. Thus just break and call memory_is_poisoned_n() which handles arbitrary size to avoid build errors with gcc LTO. Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx> Cc: Alexander Potapenko <glider@xxxxxxxxxx> Cc: Andrey Konovalov <andreyknvl@xxxxxxxxx> Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx> Cc: Vincenzo Frascino <vincenzo.frascino@xxxxxxx> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: kasan-dev@xxxxxxxxxxxxxxxx Cc: linux-mm@xxxxxxxxx Signed-off-by: Martin Liska <mliska@xxxxxxx> Signed-off-by: Jiri Slaby <jslaby@xxxxxxx> --- mm/kasan/generic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/kasan/generic.c b/mm/kasan/generic.c index d8b5590f9484..d261f83c6687 100644 --- a/mm/kasan/generic.c +++ b/mm/kasan/generic.c @@ -152,7 +152,7 @@ static __always_inline bool memory_is_poisoned(unsigned long addr, size_t size) case 16: return memory_is_poisoned_16(addr); default: - BUILD_BUG(); + break; } } -- 2.38.1
