[CRIU] [PATCH v2] compel: infect -- Don't forget to fetch sas early

[Cyrill Gorcunov]

On Mon, Feb 20, 2017 at 11:40:19AM +0300, Pavel Emelyanov wrote:
> On 02/20/2017 11:33 AM, Cyrill Gorcunov wrote:
> > When infecting victim we construct sigframe to
> > be able to self-rectore it in case if something
> > goes wrong. But in case is a targer been using
> > alternative stack for signal handling it will
> > be missed in sigframe since we don't fetch it.
> > 
> > Thus add fetching sas on infection stage and
> > put it into signal frame early.
> 
> The ciru/pie/parasite.c should stop calling sigaltstack itself
> and get the sas from compel :)

Yes, but it is for another patch. Will try to implement today.
Note though, that we're fetching sas for thread leader only
and the other threads still will fetch sas'ed by own via
parasite daemon.