kasan_prot_ro 37 arch/powerpc/mm/kasan/kasan_init_32.c pgprot_t prot = slab_is_available() ? kasan_prot_ro() : PAGE_KERNEL; kasan_prot_ro 112 arch/powerpc/mm/kasan/kasan_init_32.c pgprot_t prot = kasan_prot_ro();