linux-kernel - Re: [PATCH 3/5] mm/mremap: use pmd_addr_end to calculate next in move_page

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Message-Id: <20200129155907.75868e8a36c5fffc3ec354b9@linux-foundation.org>
Date:   Wed, 29 Jan 2020 15:59:07 -0800
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Wei Yang <richardw.yang@...ux.intel.com>, dan.j.williams@...el.com,
        aneesh.kumar@...ux.ibm.com, kirill@...temov.name,
        yang.shi@...ux.alibaba.com, thellstrom@...are.com,
        Thierry Reding <thierry.reding@...il.com>,
        Jon Hunter <jonathanh@...dia.com>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        "linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        Stephen Rothwell <sfr@...b.auug.org.au>
Subject: Re: [PATCH 3/5] mm/mremap: use pmd_addr_end to calculate next in
 move_page_tables()

On Wed, 29 Jan 2020 20:18:56 +0300 Dmitry Osipenko <digetx@...il.com> wrote:

> 27.01.2020 05:59, Andrew Morton пишет:
> > On Sun, 26 Jan 2020 17:47:57 +0300 Dmitry Osipenko <digetx@...il.com> wrote:
> ...
> >> Hello Wei,
> >>
> >> Starting with next-20200122, I'm seeing the following in KMSG on NVIDIA
> >> Tegra (ARM32):
> >>
> >>   BUG: Bad rss-counter state mm:(ptrval) type:MM_ANONPAGES val:190
> >>
> >> and eventually kernel hangs.
> >>
> >> Git's bisection points to this patch and reverting it helps. Please fix,
> >> thanks in advance.
> > 
> > Thanks.  I had these tagged for 5.7-rc1 anyway, so I'll drop all five
> > patches.
> > 
> 
> Hello Andrew,
> 
> FYI, I'm still seeing the offending patches in the today's next-20200129.

hm, me too.  Stephen, it's unexpected that 9ff4452912d63f ("mm/mremap:
use pmd_addr_end to calculate next in move_page_tables()") is still in
the -next lineup?  It was dropped from -mm on Jan 26?