[kernel-hardening] Re: [PATCH v9 1/4] syscalls: Verify address limit before returning to user-mode

[Christoph Hellwig]

On Fri, May 12, 2017 at 10:30:44PM +0200, Peter Zijlstra wrote:
> On stack variable length arrays get implemented by the compiler doing
> alloca(), and we sadly have a few of those around.

I've just got rid of one of those and I wish they would appear
entirely as they are horrible in so many different ways.  Sparse
warns about them, btw.