From mboxrd@z Thu Jan  1 00:00:00 1970
From: =?utf-8?B?SsO2cm4=?= Engel <joern@logfs.org>
Subject: Re: linux-next: Tree for Jul 3
Date: Wed, 3 Jul 2013 10:48:03 -0400
Message-ID: <20130703144802.GA32130@logfs.org>
References: <20130703180620.6919bf7d7f13f7ed21046c68@canb.auug.org.au>
 <20130703112539.GA32584@linaro.org>
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To: Steve Capper <steve.capper@linaro.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>, linux-next@vger.kernel.org, linux-kernel@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>

On Wed, 3 July 2013 12:25:41 +0100, Steve Capper wrote:
>=20
> Today's linux-next appears to introduce some BUGs when running the li=
bhugetlbfs
> testsuite (under both ARM64 and x86_64):
>=20
> [   94.320661] BUG: Bad rss-counter state mm:ffff880119461040 idx:1 v=
al:-512
> [   94.330346] BUG: Bad rss-counter state mm:ffff880119460680 idx:1 v=
al:-2560
> [   94.341746] BUG: Bad rss-counter state mm:ffff880119460d00 idx:1 v=
al:-512
> [   94.347518] BUG: Bad rss-counter state mm:ffff880119460d00 idx:1 v=
al:-512
> [   94.415203] BUG: Bad rss-counter state mm:ffff8801194f9040 idx:1 v=
al:-1024
>=20
> I've bisected this to commit:
> commit 446313e3e4e7274c4d1e449d107fab6c041ec59c
> hugetlb: properly account rss
>=20
> The bad counter values I get are all negative.
>=20
> To reproduce this, just run through the latest libhugetlbfs test suit=
e, these
> warnings appear pretty much immediately. (I set aside 200 huge pages =
first):
> http://libhugetlbfs.sourceforge.net/
>=20
> Reverting this commit allows the test suite to run without problems.

Thank you, I will have a look.  For the interim, dropping this patch
from -mm seems the best approach.

J=C3=B6rn

--
Geld macht nicht gl=C3=BCcklich.
Gl=C3=BCck macht nicht satt.