Message-ID: <53922148.4020605@oracle.com>
Date: Fri, 06 Jun 2014 16:15:04 -0400
From: Sasha Levin <sasha.levin@oracle.com>
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To: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>, jwboyer@fedoraproject.org
CC: Andrew Morton <akpm@linux-foundation.org>, torvalds@linux-foundation.org,
        linux-kernel@vger.kernel.org
Subject: Re: pte_present check on hugetlb_entry fix for 3.15?
References: <20140606173546.GA1869@zod> <1402080393-n2hosalz@n-horiguchi@ah.jp.nec.com>
In-Reply-To: <1402080393-n2hosalz@n-horiguchi@ah.jp.nec.com>
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On 06/06/2014 02:46 PM, Naoya Horiguchi wrote:
>>  A backported version is below.  I poked Linus about this
>> > early today privately (my fault, apologies) and he had some
>> > questions/comments on the code.
> I'm not sure the same problem really reproduces on mainline kernel without
> my page table walker patchset, because I could't reproduce it in my environment
> (Sasha, have you seen this problem on mainline kernel?)

I haven't been fuzzing the mainline kernel at any point, but this issue reproduced
with the page table walker patches reverted on -next, so I think it's safe to assume
it would reproduce on mainline.


Thanks,
Sasha
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