linux-kernel - Re: exit_mmap() BUG_ON triggering since 3.1

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Date:	Fri, 2 Mar 2012 15:09:29 -0800 (PST)
From:	Hugh Dickins <hughd@...gle.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	Andrea Arcangeli <aarcange@...hat.com>,
	Dave Jones <davej@...hat.com>,
	David Rientjes <rientjes@...gle.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	kernel-team@...oraproject.org
Subject: Re: exit_mmap() BUG_ON triggering since 3.1

On Fri, 2 Mar 2012, Andrew Morton wrote:
> On Fri, 2 Mar 2012 14:53:32 -0800 (PST)
> Hugh Dickins <hughd@...gle.com> wrote:
> 
> > Subject: Re: exit_mmap() BUG_ON triggering since 3.1
> > ...
> > Subject: [PATCH] mm: thp: fix BUG on mm->nr_ptes
> 
> So it's needed in 3.1.x and 3.2.x?

Indeed it would be needed in -stable, thanks, I forgot to add that.

And although Fedora only got reports from 3.1 onwards, I believe it
would equally be needed in 3.0.x.  3.1.x is closed down now, but
3.0.x and 3.2.x are still open.

I've not yet tried applying it to the latest of either of those: maybe
it applies cleanly and correctly, but I could imagine movements too.
But the first step, yes, is to Cc: stable@...r.kernel.org

Thanks,
Hugh
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