linux-kernel - Re: [stable] [PATCH] kvm: fix crash on irqfd deassign

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Message-ID: <20110318132102.GD4221@redhat.com>
Date:	Fri, 18 Mar 2011 15:21:02 +0200
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Greg KH <greg@...ah.com>
Cc:	Avi Kivity <avi@...hat.com>, Marcelo Tosatti <mtosatti@...hat.com>,
	kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
	jean-philippe.menil@...v-nantes.fr, stable@...nel.org,
	Jason Wang <jasowang@...hat.com>
Subject: Re: [stable] [PATCH] kvm: fix crash on irqfd deassign

On Thu, Mar 17, 2011 at 09:13:08AM -0700, Greg KH wrote:
> On Thu, Mar 17, 2011 at 10:53:33AM +0200, Michael S. Tsirkin wrote:
> > irqfd in kvm used flush_work incorrectly:
> > it assumed that work scheduled previously can't run
> > after flush_work, but since kvm uses a non-reentrant
> > workqueue (by means of schedule_work)
> > we need flush_work_sync to get that guarantee.
> > 
> > Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
> > Reported-by: Jean-Philippe Menil <jean-philippe.menil@...v-nantes.fr>
> > Tested-by: Jean-Philippe Menil <jean-philippe.menil@...v-nantes.fr>
> > ---
> > 
> > Note: this is needed for kernel 2.6.39 and earlier.
> 
> This is not the correct way to submit patches for inclusion in the
> stable kernel tree.  Please read Documentation/stable_kernel_rules.txt
> for how to do this properly.
> 
> thanks,
> 
> greg k-h

What I missed is Cc: stable@...nel.org in the text?
OK, thanks for the correction.  Actually I forgot, Avi and Marcelo want
to handle stable patches for kvm themselves.
Avi, Marcelo, right?
So Greg, you can forget about this one for now.

Thanks,

-- 
MST
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