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SubjectRe: bad rss-counter message in 3.14rc5
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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