linux-kernel - Re: [patch 1/2] genirq: Run irq handlers with interrupts disabled

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Message-ID: <alpine.LFD.2.00.1004022242170.32352@localhost.localdomain>
Date:	Fri, 2 Apr 2010 22:42:51 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Pavel Machek <pavel@....cz>
cc:	Andi Kleen <andi@...stfloor.org>,
	Linus Torvalds <torvalds@...l.org>,
	LKML <linux-kernel@...r.kernel.org>, linux-arch@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <peterz@...radead.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	David Miller <davem@...emloft.net>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [patch 1/2] genirq: Run irq handlers with interrupts disabled

On Fri, 2 Apr 2010, Pavel Machek wrote:

> On Wed 2010-03-31 13:16:37, Thomas Gleixner wrote:
> > On Tue, 30 Mar 2010, Andi Kleen wrote:
> > 
> > > > Why not simply force IRQF_DISABLED for all MSI interrupts. That still
> > > > allows nesting for non MSI ones, but it limits the chance of throwing
> > > > up reasonably well. That's a two liner.
> > > > 
> > > > Can you please test whether it resolves the issue at hand ?
> > > 
> > > Sorry for the late answer. Got confirmation that this patch
> > > fixes the test case. Thanks.
> > 
> > Ok, I'll push it linus wards and cc stable. I think thats the least
> > intrusive safe bet we can have right now.
> 
> stable? I'd say thats way too intrusive for -stable...

So we better let the possible stack overruns unaddressed ?

Thanks,

	tglx
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