linux-kernel - Re: [PATCH] hwpoison: fix oops on ksm pages

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Message-ID: <20091013154356.GA2127@basil.fritz.box>
Date:	Tue, 13 Oct 2009 17:43:56 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Hugh Dickins <hugh.dickins@...cali.co.uk>
Cc:	Andi Kleen <andi@...stfloor.org>,
	Wu Fengguang <fengguang.wu@...el.com>,
	Izik Eidus <ieidus@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] hwpoison: fix oops on ksm pages

On Tue, Oct 13, 2009 at 03:02:11PM +0100, Hugh Dickins wrote:
> Memory failure on a KSM page currently oopses on its NULL anon_vma in
> page_lock_anon_vma(): that may not be much worse than the consequence
> of ignoring it, but it is better to be consistent with how ZERO_PAGE
> and hugetlb pages and other awkward cases are treated.  Just skip it.

Thanks, Hugh. I'm curious: did this come out of code review or
did you actually run into that?

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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