On Mon, Oct 12, 2020 at 08:01:04AM +0000, Christopher Lameter wrote: > On Fri, 9 Oct 2020, Kees Cook wrote: > > > Store the freelist pointer out of line when object_size is smaller than > > sizeof(void *) and redzoning is enabled. > > > > (Note that no caches with such a size are known to exist in the kernel > > currently.) > > Ummm... The smallest allowable cache size is sizeof(void *) as I recall. > > > mm/slab_common.c::kmem_sanity_check() checks the sizes when caches are > created. Ah thank you! Yes, I really thought there was a place where that happened, but I missed it. This patch can be dropped. -- Kees Cook
