Re: [kernel-hardening] Re: [PATCH v3 03/31] usercopy: Mark kmalloc caches as usercopy caches

On Thu, Sep 21, 2017 at 9:04 AM, Christopher Lameter wrote: > On Thu, 21 Sep 2017, Kees Cook wrote: > >> > So what is the point of this patch? >> >> The DMA kmalloc caches are not whitelisted: > > The DMA kmalloc caches are pretty obsolete and mostly there for obscure > drivers. >

Re: [kernel-hardening] Re: [PATCH v3 03/31] usercopy: Mark kmalloc caches as usercopy caches

On Thu, 21 Sep 2017, Kees Cook wrote: > > So what is the point of this patch? > > The DMA kmalloc caches are not whitelisted: The DMA kmalloc caches are pretty obsolete and mostly there for obscure drivers. ?? > >> kmalloc_dma_caches[i] = create_kmalloc_cache(n, > >> -

Re: [kernel-hardening] Re: [PATCH v3 03/31] usercopy: Mark kmalloc caches as usercopy caches

On Thu, Sep 21, 2017 at 8:27 AM, Christopher Lameter wrote: > On Wed, 20 Sep 2017, Kees Cook wrote: > >> --- a/mm/slab.c >> +++ b/mm/slab.c >> @@ -1291,7 +1291,8 @@ void __init kmem_cache_init(void) >>*/ >> kmalloc_caches[INDEX_NODE] = create_kmalloc_cache( >>