From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <benh@kernel.crashing.org>
Received: from gate.crashing.org (gate.crashing.org [63.228.1.57])
	(using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
	(Client did not present a certificate)
	by ozlabs.org (Postfix) with ESMTP id E15A567C7C
	for <linuxppc-dev@ozlabs.org>; Wed,  1 Nov 2006 07:30:23 +1100 (EST)
Subject: Re: glibc-2.5 test suite hangs/crashes the machine
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Fabio Massimo Di Nitto <fabbione@ubuntu.com>
In-Reply-To: <45471B94.9070606@ubuntu.com>
References: <45419F79.2020300@ubuntu.com>
	<1162177334.25682.144.camel@localhost.localdomain>
	<4545E38B.5010702@ubuntu.com>
	<1162240610.25682.182.camel@localhost.localdomain>
	<45471B94.9070606@ubuntu.com>
Content-Type: text/plain
Date: Wed, 01 Nov 2006 07:30:09 +1100
Message-Id: <1162326609.25682.332.camel@localhost.localdomain>
Mime-Version: 1.0
Cc: linuxppc-dev@ozlabs.org, Jeff Bailey <jbailey@ubuntu.com>,
	Paul Mackerras <paulus@samba.org>, Ben Collins <ben.collins@ubuntu.com>
List-Id: Linux on PowerPC Developers Mail List <linuxppc-dev.ozlabs.org>
List-Unsubscribe: <https://ozlabs.org/mailman/listinfo/linuxppc-dev>,
	<mailto:linuxppc-dev-request@ozlabs.org?subject=unsubscribe>
List-Archive: <http://ozlabs.org/pipermail/linuxppc-dev>
List-Post: <mailto:linuxppc-dev@ozlabs.org>
List-Help: <mailto:linuxppc-dev-request@ozlabs.org?subject=help>
List-Subscribe: <https://ozlabs.org/mailman/listinfo/linuxppc-dev>,
	<mailto:linuxppc-dev-request@ozlabs.org?subject=subscribe>

On Tue, 2006-10-31 at 10:47 +0100, Fabio Massimo Di Nitto wrote:
> Benjamin Herrenschmidt wrote:
> > On Mon, 2006-10-30 at 12:35 +0100, Fabio Massimo Di Nitto wrote:
> >> Benjamin Herrenschmidt wrote:
> >>> Does that patch fixes it ?
> >>>
> >> tested with kernel .17 and headers from .19 and the build hangs. Still tons of
> >> Zl processes around.
> >>
> >> On the note building with kernel .19 and .19 headers it all goes smooth.
> > 
> > Ok, so there's a different issue from what I've found. You haven't by
> > chance noted what those processes are (which test case typically) ?
> > Also, there's a sysrq to get a backtrace of all pending processes,
> > though I don't remember which one off the top of my mind, might be
> > useful to have a look though.
> > 
> > Ben.
> > 
> 
> After discussing with Ben on IRC i applied 69588298188b40ed7f75c98a6fd328d82f23ca21
> to kernel .17 and glibc does build without zombie processes and no hang whatsoever.
> 
> I suggest to push this patch back to the stable kernel trees.

It also need the alignment bits I did though.

Ben.