linux-kernel - Re: 2.6.18-rc6-mm1 2.6.18-rc5-mm1 Kernel Panic on X60s

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Message-Id: <20060911095106.2a7d6d95.akpm@osdl.org>
Date:	Mon, 11 Sep 2006 09:51:06 -0700
From:	Andrew Morton <akpm@...l.org>
To:	Brandon Philips <brandon@...p.org>
Cc:	linux-kernel@...r.kernel.org, Brice Goglin <brice@...i.com>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Robert Love <rml@...ell.com>
Subject: Re: 2.6.18-rc6-mm1 2.6.18-rc5-mm1 Kernel Panic on X60s

On Sun, 10 Sep 2006 21:14:00 -0500
Brandon Philips <brandon@...p.org> wrote:

> On 12:50 Fri 08 Sep 2006, Andrew Morton wrote:
> > On Fri, 8 Sep 2006 14:43:00 -0500
> > Brandon Philips <brandon@...p.org> wrote:
> > > On 12:13 Fri 08 Sep 2006, Andrew Morton wrote:
> > > > On Fri, 8 Sep 2006 12:44:37 -0500
> > > > Brandon Philips <brandon@...p.org> wrote:
> > > > > 2.6.18-rc4-mm3 boots ok.
> > > > > 
> > > > > I will try and bisect the problem later tonight-
> > > > 
> > > > Thanks.  First, try disabling CONFIG_PCI_MSI.
> > > 
> > > With CONFIG_PCI_MSI disabled the system boots.  
> > 
> > OK, thanks.
> > 
> > So likely candidates are:
> > 
> > - The conversion of i386 to use the genirq code
> 
> genirq-convert-the-i386-architecture-to-irq-chips.patch is causing the
> Kernel panic.
> 

OK, thanks.

I don't think this necessarily tells us where the bug lies.  It could be
some pre-existing thing in MSI, or it could be added by Bryce's changes. 
Or by Eric's.  Or, of course, by
genirq-convert-the-i386-architecture-to-irq-chips.patch.

There doesn't seem to be a lot of movement on this and we want to get the
x86 genirq conversion into 2.6.19.  Could be that we end up having to merge
known-buggy stuff into mainline and crash enough computers to irritate
someone into fixing it.  Rather sad.

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