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Re: [Xen-users] Domu windows 2012 crash.
- To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Johnny Ström <johnny.strom@xxxxxxxxxxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxxx
- From: Hans van Kranenburg <hans@xxxxxxxxxxx>
- Date: Thu, 19 Mar 2020 18:27:09 +0100
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- Cc: kim Ståhl <kim.stahl@xxxxxxxxxxxxxxxxx>
- Delivery-date: Thu, 19 Mar 2020 17:28:37 +0000
- List-id: Xen user discussion <xen-users.lists.xenproject.org>
On 3/19/20 2:12 PM, Andrew Cooper wrote:
> On 19/03/2020 12:34, Johnny Ström wrote:
>> On 3/18/20 5:36 PM, Andrew Cooper wrote:
>>> On 18/03/2020 15:32, Johnny Ström wrote:
>>>>
>>>> I have been running test with "xl set-parameters ept=exec-sp" and
>>>> windows 2012 R2.
>>>>
>>>> And it dose not crash anymore.
>>>>
>>>> I used memory = 5120 that did make it crash within 2 minutes before.
>>>>
>>>> So xl set-parameters ept=exec-sp seems to be an workaround for now.
>>> Right, but what you're doing is turning off the security fix for
>>> XSA-304.
>>>
>>> Do you have any shadow_memory= option set in your VM's config file? If
>>> so, please remove it.
>>
>> We had: shadow_memory = 8
>>
>> Rebooted the hypervisor and commented: out shadow_memory
>>
>> And no crash after some hours of running. So it seems to work.
>
> Please can someone post this as a proper bug report to xen-devel@
>
> We've clearly got a bug somewhere in the logic for determining and
> enforcing the minimum safe shadow memory for a domain to use.
Yes, I will do that.
Hans
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