Re: stress-ng process termination issue

[Samuel Thibault <sthibault@debian.org>]

Michael Kelly, le jeu. 07 août 2025 13:07:07 +0100, a ecrit:
> On 07/08/2025 12:13, Samuel Thibault wrote:
> > > TLS code is really difficult to debug indeed. But I'd doubt that's the
> > > issue, as it is largely used for many other cases, and the code is
> > > actually very trivial: just reading/writing %gs:0x38.
> > > 
> > > And it's probably very easy for calls to __mig_get_reply_port() /
> > > __mig_dealloc_reply_port () to get wrong with mismatched cleanup code,
> > > e.g.
> > > 
> > > port = __mig_get_reply_port()
> > > __mig_dealloc_reply_port(port);
> > > port2 = __mig_get_reply_port()
> > > __mig_dealloc_reply_port(port);
> 
> I do hope that you are right although I hadn't expected mismatches from
> generated code.

I wouldn't indeed, but there are also signal management and a couple
explicit calls.

It could be worth trying to put code in them that checks for coherency
of calls.

Samuel