linux-kernel - Re: Regression: Bad page map in process xyz

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Date:	Sun, 26 Feb 2012 23:45:33 -0500
From:	Naoya Horiguchi <n-horiguchi@...jp.nec.com>
To:	Hugh Dickins <hughd@...gle.com>
Cc:	Maciej Rutecki <maciej.rutecki@...il.com>,
	Jiri Slaby <jslaby@...e.cz>, n-horiguchi@...jp.nec.com,
	kamezawa.hiroyu@...fujitsu.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Jiri Slaby <jirislaby@...il.com>, linux-mm@...ck.org
Subject: Re: Regression: Bad page map in process xyz

Hi Hugh,

On Sun, Feb 26, 2012 at 05:10:31AM -0800, Hugh Dickins wrote:
> On Sun, 26 Feb 2012, Maciej Rutecki wrote:
> > On poniedziaナＦk, 20 lutego 2012 o 11:02:17 Jiri Slaby wrote:
> > > Hi,
> > > 
> > > I'm getting a ton of
> > > BUG: Bad page map in process zypper  pte:676b700029736c6f pmd:44967067
> > > when trying to upgrade the system by:
> > > zypper dup
> > > 
> > > I bisected that to:
> > > commit afb1c03746aa940374b73a7d5750ee05a2376077
> > > Author: Naoya Horiguchi <n-horiguchi@...jp.nec.com>
> > > Date:   Fri Feb 17 10:57:58 2012 +1100
> > > 
> > >     thp: optimize away unnecessary page table locking
> > > 
> > > thanks,
> > 
> > I created a Bugzilla entry at 
> > https://bugzilla.kernel.org/show_bug.cgi?id=42820
> > for your bug/regression report, please add your address to the CC list in 
> > there, thanks!
> 
> No, thanks for spotting it, but please remove from the regressions
> report: it's not a regression in 3.3-rc but in linux-next - don't take
> my word for it, check the commit and you'll not find it in 3.3-rc.
> 
> We do still need to get the fix into linux-next: Horiguchi-san, has
> akpm put your fix in mm-commits yet?  Please send it again if not.

Sorry for late reply.
And yes, this fix is in mm-commits now.

Thanks,
Naoya
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