Re: [mm -next] mapping->tree_lock inconsistent lock state

From: Benjamin LaHaise
Date: Wed Feb 03 2016 - 14:01:17 EST


On Wed, Feb 03, 2016 at 01:45:09PM -0500, Johannes Weiner wrote:
> On Thu, Feb 04, 2016 at 12:36:33AM +0900, Sergey Senozhatsky wrote:
> > Hello,
> >
> > next-20160203
> >
> > [ 3587.997451] =================================
> > [ 3587.997453] [ INFO: inconsistent lock state ]
> > [ 3587.997456] 4.5.0-rc2-next-20160203-dbg-00007-g37a0a9d-dirty #377 Not tainted
> > [ 3587.997457] ---------------------------------
> > [ 3587.997459] inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage.
>
> Thanks Sergey. Vladimir sent a patch to move mem_cgroup_migrate() out
> of the IRQ-disabled section:
>
> http://marc.info/?l=linux-mm&m=145452460721208&w=2
>
> It looks like Vladimir's original message didn't make it to linux-mm,
> only my reply to it; CC Ben LaHaise.

There's not much I can do when Google decides to filter it.

-ben
--
"Thought is the essence of where you are now."