[CRIU] crash in pb_read_one?

[Tycho Andersen]

Hi Pavel,

On Tue, Sep 16, 2014 at 12:02:19PM -0500, Tycho Andersen wrote:
> >
> > Hm... This somewhere should be strictly after all files from this
> > helper has been opened. This can be pretty well determined by the
> > remap->users count. Next, when creating such helpers we can feed
> > 0 into clone flag's exit_signal field, thus causing this particular
> > child to auto-reap, so once the remap->users count hits zero we
> > can just shoot it with SIGKILL.
> 
> Ah, that sounds like a better approach. Actually I don't think we need
> to shoot it, we can just synchronize it to the end of the RESTORE
> stage and it should Just Work. I will give that a try, seems much
> cleaner than messing around with rst memory.

Actually it looks like the clone flags for the helpers are 0, but they
still aren't auto-reaped when they exit (i.e. they are zombies, which
need a wait() call). What am I missing?

Tycho