linux-kernel - RE: [PATCH] RAS/CEC: Add debugfs switch to disable at run time

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <3908561D78D1C84285E8C5FCA982C28F7E90A869@ORSMSX104.amr.corp.intel.com>
Date:   Mon, 22 Apr 2019 17:23:41 +0000
From:   "Luck, Tony" <tony.luck@...el.com>
To:     Borislav Petkov <bp@...en8.de>
CC:     Cong Wang <xiyou.wangcong@...il.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] RAS/CEC: Add debugfs switch to disable at run time

> I think we're talking past each other here: I mean disable the CEC
> *forever* and *never* use it. Use only a userspace agent and log errors
> with it.
>
> Makes sense?

Not really. We want pretty much everyone to enable and use CEC. That way
people don't bother use about the occasional neutron strike flipping a bit.

So we need to make sure there are no excuses for disabling it. People
may come up with other cases where they say they would need to disable
(perhaps genuine, perhaps bogus) ... if our only answers are reboot, or
recompile and reboot ... then they'll disable forever.

If they do that, why do we even have it in the kernel?

-Tony