Openwall GNU/*/Linux - a small security-enhanced Linux distro for servers
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Tue, 27 Mar 2018 15:10:53 -0700
From: Andrew Morton <akpm@...ux-foundation.org>
To: Kees Cook <keescook@...omium.org>
Cc: Boaz Harrosh <ooo@...ctrozaur.com>, linux-kernel@...r.kernel.org, Nick
 Desaulniers <ndesaulniers@...gle.com>, kernel-hardening@...ts.openwall.com
Subject: Re: [PATCH] exofs: Avoid VLA in structures

On Tue, 27 Mar 2018 13:39:04 -0700 Kees Cook <keescook@...omium.org> wrote:

> On the quest to remove all VLAs from the kernel[1] this adjusts several
> cases where allocation is made after an array of structures that points
> back into the allocation. The allocations are changed to perform explicit
> calculations instead of using a Variable Length Array in a structure.
> Additionally, this lets Clang compile this code now, since Clang does not
> support VLAIS[2].
> 
> [1] https://lkml.org/lkml/2018/3/7/621
> [2] https://lkml.org/lkml/2013/9/23/500
> 
> ...
>
> I not sure the best way to test this. Kconfig implies I need special hardware?

Yeah, I was wondering about that.  It's a tricky-looking patch.

Boaz, are you able to give it a spin?

Thanks.

Powered by blists - more mailing lists

Your e-mail address:

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.