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Date: Wed, 3 Feb 2016 13:45:09 -0500
From: Johannes Weiner <hannes@cmpxchg.org>
To: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
        Michal Hocko <mhocko@kernel.org>,
        Vladimir Davydov <vdavydov@virtuozzo.com>,
        Vlastimil Babka <vbabka@suse.cz>, cgroups@vger.kernel.org,
        linux-mm@kvack.org, linux-kernel@vger.kernel.org,
        Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
        Benjamin LaHaise <bcrl@kvack.org>
Subject: Re: [mm -next] mapping->tree_lock inconsistent lock state
Message-ID: <20160203184509.GB4007@cmpxchg.org>
References: <20160203153633.GA32219@swordfish>
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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.