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SubjectRe: [PATCH] mm: add pte_present() check on existing hugetlb_entry callbacks
On 03/03/2014 03:06 PM, Sasha Levin wrote:
> On 03/03/2014 12:02 AM, Naoya Horiguchi wrote:
>> Hi Sasha,
>>
>>> >I can confirm that with this patch the lockdep issue is gone. However, the NULL deref in
>>> >walk_pte_range() and the BUG at mm/hugemem.c:3580 still appear.
>> I spotted the cause of this problem.
>> Could you try testing if this patch fixes it?
>
> I'm seeing a different failure with this patch:

And the NULL deref still happens.


Thanks,
Sasha


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