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

From: Michael S. Tsirkin
Date: Fri Mar 18 2011 - 09:21:39 EST


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@xxxxxxxxxx>
> > Reported-by: Jean-Philippe Menil <jean-philippe.menil@xxxxxxxxxxxxxx>
> > Tested-by: Jean-Philippe Menil <jean-philippe.menil@xxxxxxxxxxxxxx>
> > ---
> >
> > 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@xxxxxxxxxx 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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