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Date: Fri, 9 Apr 2010 11:21:11 +0200
From: Borislav Petkov <bp@alien8.de>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
       Rik van Riel <riel@redhat.com>,
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       Hugh Dickins <hugh.dickins@tiscali.co.uk>, sgunderson@bigfoot.com,
       hannes@cmpxchg.org
Subject: Re: [PATCH -v2] rmap: make anon_vma_prepare link in all the
 anon_vmas of a mergeable VMA
Message-ID: <20100409092111.GA998@a1.tnic>
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	Andrea Arcangeli <aarcange@redhat.com>,
	Hugh Dickins <hugh.dickins@tiscali.co.uk>, sgunderson@bigfoot.com,
	hannes@cmpxchg.org
References: <alpine.LFD.2.00.1004071625490.3586@i5.linux-foundation.org>
 <20100408101925.FB9F.A69D9226@jp.fujitsu.com>
 <alpine.LFD.2.00.1004071929090.3586@i5.linux-foundation.org>
 <20100408054707.GA9299@a1.tnic>
 <alpine.LFD.2.00.1004080706500.3586@i5.linux-foundation.org>
 <20100408210035.GA25834@a1.tnic>
 <alpine.LFD.2.00.1004081610020.3558@i5.linux-foundation.org>
 <20100408234721.GB25834@a1.tnic>
 <alpine.LFD.2.00.1004081744150.3558@i5.linux-foundation.org>
 <20100409013012.GA8153@liondog.tnic>
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From: Borislav Petkov <bp@alien8.de>
Date: Fri, Apr 09, 2010 at 03:30:12AM +0200

> > Maybe with all the patches flying around, you had a reject or something, 
> > and you lost that one anon_vma_prepare()?
> > 
> > Or maybe I screwed up somewhere and sent you the wrong patch. Here it is 
> > again, just in case.
> 
> Doesn't look like it - here's the diff between yours and what I have
> applied here (yep, only minor fuzz but no code differences) Also, I've
> added my version at the end:

So I went and reapplied the three patches (3rd is the object_err export
for SLUB debugging) on a new branch of today's git - same results, the
same processes crap up in the WARN(!vma->anon_vma) check so it should be
something else we're missing.

More code staring later...

-- 
Regards/Gruss,
Boris.