Re: [PATCH 6/8] tools/nolibc: tests: add test for -fstack-protector

[Thomas Weißschuh]

On 2023-03-27 17:54:11+0200, Willy Tarreau wrote:
> On Mon, Mar 27, 2023 at 06:32:51PM +0300, Alexey Dobriyan wrote:
> > On Sun, Mar 26, 2023 at 09:42:29PM +0200, Willy Tarreau wrote:
> > > On Sun, Mar 26, 2023 at 10:38:39PM +0300, Alexey Dobriyan wrote:
> > > > > I'm not seeing any issue with your approach instead, let's
> > > > > keep it as-is for now (also it does what the stack protector is supposed
> > > > > to catch anyway).
> > > > 
> > > > There are no guarantess about stack layout and dead writes.
> > > > The test doesn't corrupt stack reliably, just 99.99% reliably.
> > > 
> > > Sure but it's for a regtest which can easily be adjusted and its
> > > posrtability and ease of maintenance outweights its reliability,
> > > especially when in practice what the code does is what we want to
> > > test for. And if an extra zero needs to be added to the loop, it
> > > can be at a lower cost than maintaining arch-specific asm code.
> > 
> > For the record, I disagree. Use volatile writes at least.
> 
> Yeah I agree on the volatile one.

Sounds good.

How do we proceed?

Do I send a new revision?
Will you fix up the series?
Will someone create a new patch? If so who?

Thomas