> extern void __reset_page_owner(struct page *page, unsigned int order); > diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan > index 6c9682ce0254..dc560c7562e8 100644 > --- a/lib/Kconfig.kasan > +++ b/lib/Kconfig.kasan > @@ -41,6 +41,8 @@ config KASAN_GENERIC > select SLUB_DEBUG if SLUB > select CONSTRUCTORS > select STACKDEPOT > + select PAGE_OWNER > + select PAGE_OWNER_FREE_STACK > help > Enables generic KASAN mode. > Supported in both GCC and Clang. With GCC it requires version 4.9.2 > @@ -63,6 +65,8 @@ config KASAN_SW_TAGS > select SLUB_DEBUG if SLUB > select CONSTRUCTORS > select STACKDEPOT > + select PAGE_OWNER > + select PAGE_OWNER_FREE_STACK > help
What is the difference between PAGE_OWNER+PAGE_OWNER_FREE_STACK and DEBUG_PAGEALLOC? If you directly enable PAGE_OWNER+PAGE_OWNER_FREE_STACK PAGE_OWNER_FREE_STACK,don't you think low-memory device to want to use KASAN?
