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Re: [Xen-devel] [BUG] xen-mceinj tool testing cause dom0 crash



>>> On 07.11.17 at 02:37, <xudong.hao@xxxxxxxxx> wrote:
>>  -----Original Message-----
>> From: Jan Beulich [mailto:JBeulich@xxxxxxxx]
>> Sent: Monday, November 6, 2017 5:17 PM
>> To: Hao, Xudong <xudong.hao@xxxxxxxxx>
>> Cc: Julien Grall <julien.grall@xxxxxxx>; George Dunlap
>> <George.Dunlap@xxxxxxxxxx>; Lars Kurth <lars.kurth@xxxxxxxxxx>; Zhang,
>> Haozhong <haozhong.zhang@xxxxxxxxx>; xen-devel@xxxxxxxxxxxxx 
>> Subject: RE: [Xen-devel] [BUG] xen-mceinj tool testing cause dom0 crash
>> 
>> >>> On 03.11.17 at 09:29, <xudong.hao@xxxxxxxxx> wrote:
>> > We figured out the problem, some corner scripts triggered the error
>> > injection at the same page (pfn 0x180020) twice, i.e. "./xen-mceinj -t
>> > 0" run over one time, which resulted in Dom0 crash.
>> 
>> But isn't this a valid scenario, which shouldn't result in a kernel crash? 
> What if
>> two successive #MCs occurred for the same page?
>> I.e. ...
>> 
> 
> Yes, it's another valid scenario, the expect result is kernel crash. 

Kernel _crash_ or rather kernel _panic_? Of course without any
kernel messages we can't tell one from the other, but to me this
makes a difference nevertheless.

Jan


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