Re: 2.4.20: Proccess stuck in __lock_page ...

Matthias Mueller
2003-05-29T13:59:12Z

On Thu, May 29, 2003 at 03:19:37PM +0200, Andrea Arcangeli wrote:
> On Wed, May 28, 2003 at 02:10:40PM +0200, Matthias Mueller wrote:
> > Tested all of them and some combinations:
> > patch 1 alone: still mouse hangs
> > patch 2 alone: still mouse hangs
> > patch 3 alone: no hangs, but I get some zombie process (starting a lot of
> > xterms results in zombie xterms, not noticed with vanilla
> > and the other patches)
> > patch 1+2: no mouse hangs
> > patch 1+2+3: no mouse hangs, no zombies
>
> I can't find a sense in the zombie thing, how can you generate zombie at
> all from xterms? That sounds like your userspace is terribly broken and
> it may have race conditions or whatever. In no way those patches can
> generate or not-generate zombies from xterms. I never ever seen a zombie
> xterm in my whole linux experience.

I rechecked everything an noticed, that it wasn't a xterm, but a wrapper
script, that executed rxvt. I changed that to plain xterm and the zombies
were gone. So I think there was probably a bug in rxvt triggered there.
After that I redid the tests, with the same result (and no zombies).
I can feel no difference between 1+2 or 1+2+3.

Matthias
--
Matthias.Mueller@rz.uni-karlsruhe.de
Rechenzentrum Universitaet Karlsruhe
Abteilung Netze