Re: [PATCH v3 0/9] Fix Kselftest's vfork() side effects

[Kees Cook]

On Tue, Apr 30, 2024 at 06:38:40PM +0200, Mickaël Salaün wrote:
> On Tue, Apr 30, 2024 at 08:13:04AM -0700, Jakub Kicinski wrote:
> > On Tue, 30 Apr 2024 15:54:38 +0200 Mickaël Salaün wrote:
> > > Jakub, can you please review it?
> > 
> > I looked thru it. I don't have the cycles to investigate and suggest 
> > a better approach but the sprinkling of mmaps(), if nothing else, feels
> > a bit band-aid-y 🤷️
> 
> The only mmap that could have side effects on existing tests in the
> _metadata one, but in fact it would reveal issues in tests, so at the
> end I think it's a good thing.
> 
> I'd like "self" to not be conditionally shared but that would require
> changes in several tests.  Let's keep that for another release. :)
> 
> I also noticed that mmap() is already used in test_harness_run() with
> results.

Yeah, I was initially worried about adding this complexity, but at the
end of the day it actually makes things more robust. I'm in favor of it.

-Kees

-- 
Kees Cook