RE: [PATCH] printk: introduce kptr_restrict level 3

2016-10-07 Thread Roberts, William C
> > As a _singlular_ argument, "it's for out-of-tree code" is weak. As an > _additional_ > argument, it has value. Saying "this only helps out-of-tree code" doesn't > carry > much weight. Saying "this helps kernel security, even for out-of-tree code" is > perfectly valid. And a wrinkle in this

RE: [PATCH] printk: introduce kptr_restrict level 3

2016-10-06 Thread Roberts, William C
> -Original Message- > From: Christoph Hellwig [mailto:h...@infradead.org] > Sent: Thursday, October 6, 2016 9:56 AM > To: Roberts, William C > Cc: Christoph Hellwig ; kernel- > harden...@lists.openwall.com; cor...@lwn.net; linux-doc@vger.kernel.org; > linux-k

RE: [PATCH] printk: introduce kptr_restrict level 3

2016-10-06 Thread Roberts, William C
> -Original Message- > From: Christoph Hellwig [mailto:h...@infradead.org] > Sent: Thursday, October 6, 2016 9:32 AM > To: Roberts, William C > Cc: kernel-harden...@lists.openwall.com; cor...@lwn.net; linux- > d...@vger.kernel.org; linux-ker...@vger.kernel.org >

RE: [PATCH] printk: introduce kptr_restrict level 3

2016-10-06 Thread Roberts, William C
> -Original Message- > From: keesc...@google.com [mailto:keesc...@google.com] On Behalf Of Kees > Cook > Sent: Wednesday, October 5, 2016 3:34 PM > To: Roberts, William C > Cc: kernel-harden...@lists.openwall.com; Jonathan Corbet ; > linux-doc@vger.kernel.org; LKML

RE: [PATCH] printk: introduce kptr_restrict level 3

2016-10-06 Thread Roberts, William C
> -Original Message- > From: Rasmus Villemoes [mailto:li...@rasmusvillemoes.dk] > Sent: Wednesday, October 5, 2016 4:53 PM > To: Roberts, William C > Cc: kernel-harden...@lists.openwall.com; cor...@lwn.net; linux- > d...@vger.kernel.org; linux-ker...@vger.kernel