linux-kernel - Re: [PATCH v5 0/2] provide check for ro_after

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Message-Id: <20170407151249.b1d45218ad2f71bdc2c8f992@linux-foundation.org>
Date:   Fri, 7 Apr 2017 15:12:49 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Kees Cook <keescook@...omium.org>
Cc:     Jessica Yu <jeyu@...hat.com>,
        Rusty Russell <rusty@...tcorp.com.au>,
        LKML <linux-kernel@...r.kernel.org>,
        "kernel-hardening@...ts.openwall.com" 
        <kernel-hardening@...ts.openwall.com>,
        Eddie Kovsky <ewk@...ovsky.org>
Subject: Re: [PATCH v5 0/2] provide check for ro_after_init memory sections

On Fri, 7 Apr 2017 14:53:23 -0700 Kees Cook <keescook@...omium.org> wrote:

> > Eddie Kovsky (2):
> >   module: verify address is read-only
> >   extable: verify address is read-only
> >
> >  include/linux/kernel.h |  2 ++
> >  include/linux/module.h | 12 ++++++++++++
> >  kernel/extable.c       | 29 +++++++++++++++++++++++++++
> >  kernel/module.c        | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++
> >  4 files changed, 96 insertions(+)
> 
> Andrew, do you have these in your mailbox (it went to lkml), or should
> I resend them directly to you? Since they depend on the
> __start_ro_after_init naming fixes in -mm, it seemed like it'd be best
> to carry these two patches there. If so, please consider them both:
> 
> Acked-by: Kees Cook <keescook@...omium.org>
> 
> (And, from the thread on the module patch, Jessica has Acked that one too.)

Well I grabbed them, but the patches don't actually do anything - they
add interfaces with no users.  What's the plan here?