[PATCH V31 25/25] debugfs: Disable open() when kernel is locked down

[Matthew Garrett]

On Wed, Mar 27, 2019 at 10:40 AM Andy Lutomirski <luto at kernel.org> wrote:
> As far as I'm concerned, preventing root from crashing the system
> should not be a design goal of lockdown at all.  And I think that the
> "integrity" mode should be as non-annoying as possible, so I think we
> should allow reading from debugfs.

I have no horse in this game - I'm happy to bring back the previous
approach for integrity mode and block reads entirely in
confidentiality mode, but I'd rather not spend another release cycle
arguing about it.