linux-kernel - Re: [v3,6/9] mm/page_owner: use stackdepot to store stacktrace

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Date:   Fri, 23 Dec 2016 00:37:18 +0100
From:   Sascha Silbe <x-linux@...ra-silbe.de>
To:     Joonsoo Kim <iamjoonsoo.kim@....com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Vlastimil Babka <vbabka@...e.cz>, mgorman@...hsingularity.net,
        Minchan Kim <minchan@...nel.org>,
        Alexander Potapenko <glider@...gle.com>,
        Hugh Dickins <hughd@...gle.com>,
        Michal Hocko <mhocko@...nel.org>, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, Sasha Levin <sasha.levin@...cle.com>
Subject: Re: [v3,6/9] mm/page_owner: use stackdepot to store stacktrace

Dear Joonsoo,

Joonsoo Kim <iamjoonsoo.kim@....com> writes:

> Anyway, I find that there is an issue in early boot phase in
> !CONFIG_SPARSEMEM. Could you try following one?
> (It's an completely untested patch, even I don't try to compile it.)

Finally got JTAG to work just enough to dive into this. Turned out to be
another case of the FDT clashing with the BSS area. Your patch caused
BSS to grow by > 4 MiB so that it now collides with the (old) default
FDT location on this board. There's nothing wrong with your patch, just
the usual black magic of placing initramfs and FDT in RAM on ARM.

Sascha
-- 
Softwareentwicklung Sascha Silbe, Niederhofenstraße 5/1, 71229 Leonberg
https://se-silbe.de/
USt-IdNr.: DE281696641

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