linux-kernel - Re: upstream regression: slob hang

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Date:	Tue, 15 Dec 2009 08:42:06 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Pekka Enberg <penberg@...helsinki.fi>
Cc:	Matt Mackall <mpm@...enic.com>, linux-kernel@...r.kernel.org
Subject: Re: upstream regression: slob hang


* Pekka Enberg <penberg@...helsinki.fi> wrote:

> Ingo Molnar wrote:
> > > > FYI, the attached config hangs in the SLOB code, on 32-bit x86 laptop 
> > > > (dual core). No log available from that box.
> 
> On Mon, 2009-12-14 at 20:26 +0200, Pekka Enberg wrote:
> > > Boots fine on my 32-bit x86 laptop.
> 
> On Mon, 2009-12-14 at 12:36 -0600, Matt Mackall wrote:
> > Thanks, Pekka. I've been too busy to experiment with this. Ingo,
> > anything interesting about your laptop? How much memory do you have?
> 
> Side note: SLOB hasn't really changed for a while so I suspect Ingo is 
> hitting some once in a blue moon type of old bug.

That's possible - although as of late i'm generally finding new regressions, 
the old once-in-a-blue-moon races i've triggered already. (the roughly half a 
million random bootups i've done in the last 2 years in -tip testing went a 
long way in rooting them out)

I'll try to figure this one out in a few days hopefully - the laptop is not 
available for testing right now for other reasons.

	Ingo
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