Re: bad rss-counter message in 3.14rc5

[Sasha Levin]

On 03/11/2014 09:20 AM, Cyrill Gorcunov wrote:
> On Tue, Mar 11, 2014 at 01:30:17AM -0400, Dave Jones wrote:
> >   > >  >
> >   > >  > I don't see any holes in regular migration.  Do you know if this is
> >   > >  > reproducible with CONFIG_NUMA_BALANCING=n or CONFIG_NUMA=n?
> >   > >
> >   > > CONFIG_NUMA_BALANCING was n already btw, so I'll do a NUMA=n run.
> >   >
> >   > There probably isn't much point unless trinity is using
> >   > sys_move_pages().  Is it?  If so it would be interesting to disable
> >   > trinity's move_pages calls and see if it still fails.
> >
> > Ok, with move_pages excluded it still oopses.
>
> Dave, is it possible to somehow figure out was someone reading pagemap file
> at moment of the bug triggering?

We can sprinkle printk()s wherever might be useful, might not be 100% accurate but
should be close enough to confirm/deny the theory.


Thanks,
Sasha

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