Re: Regression due to "mm/swap.c: flush lru pvecs on compound page arrival"

[Greg KH <greg@kroah.com>]

On Wed, Dec 14, 2016 at 03:14:54PM +0000, Ian Jackson wrote:
> Michal Hocko writes ("Re: Regression due to "mm/swap.c: flush lru pvecs on compound page arrival""):
> > On Wed 14-12-16 13:29:56, Ian Jackson wrote:
> > > This commit breaks the test "test-amd64-amd64-xl-qemut-win7-amd64" in
> > > the Xen Project CI system.
> > 
> > Could you be more specific about the regression please?
> 
> The effect seems to be that it causes some kind of OOM condition
> during boot under Xen:
> 
> Dec 14 08:00:04.637998 [   22.584134] Out of memory: Kill process 2747
> (exim4) score 2 or sacrifice child
> 
> It's not quite clear to me but I think the problem may be hardware
> specific.
> 
> Full logs are available here:
> 
> > > >   Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/103315/
> 
> See in particular this, which is the host serial console output:
> 
> http://logs.test-lab.xenproject.org/osstest/logs/103315/test-amd64-amd64-xl-qemut-win7-amd64/serial-elbling1.log
> 
> Start reading at Dec 14 07:59:33.478093.  At Dec 14 08:01:38.294433 a
> log capture process started sending various debug keys to the console.

And is this also an issue in Linus's tree?

thanks,

greg k-h