linux-kernel - Re: [PATCH 02/27] Add a SysRq option to lift kernel lockdown

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Message-ID: <CACdnJuuxAM06TcnczOA6NwxhnmQUeqqm3Ma8btukZpuCS+dOqg@mail.gmail.com>
Date:   Wed, 6 Mar 2019 16:12:19 -0800
From:   Matthew Garrett <mjg59@...gle.com>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     jmorris@...ei.org,
        LSM List <linux-security-module@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        David Howells <dhowells@...hat.com>
Subject: Re: [PATCH 02/27] Add a SysRq option to lift kernel lockdown

On Wed, Mar 6, 2019 at 4:10 PM Randy Dunlap <rdunlap@...radead.org> wrote:
>
> On 3/6/19 3:58 PM, Matthew Garrett wrote:
> > From: Kyle McMartin <kyle@...hat.com>
> >
> > Make an option to provide a sysrq key that will lift the kernel lockdown,
> > thereby allowing the running kernel image to be accessed and modified.
>
> You still need to document this in Documentation/admin-guide/sysrq.rst,
> like I mentioned last week.

Hm.. On reflection this patch doesn't make much sense without the
automatic lockdown enable functionality, so I'll just drop it from the
patchset instead. Thanks!