Re: [PATCH v2] rslib: Remove VLAs by setting upper bound on nroots

[Thomas Gleixner]

On Wed, 28 Mar 2018, Thomas Gleixner wrote:
> On Tue, 27 Mar 2018, Kees Cook wrote:
> 
> > > I guess if we put this storage into the rs_control (rather than on the
> > > stack) then we'd have to worry about concurrent uses of it.  It looks
> > > like all the other fields are immutable once it's set up so there might
> > > be such users.  In fact, I suspect there are...
> > 
> > Exactly. :( This is the same conclusion tglx and I came to.
> 
> I think we can lift that and just let all users set up a new rs_control
> from scratch. Takes some time to init the tables, but ....

Bah, no. dm-verity really wants to share them.....