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Re: [Xen-devel] 4.2.3 - xen: vector 0x2 is not implemented


  • To: xen-devel@xxxxxxxxxxxxx
  • From: Steven Haigh <netwiz@xxxxxxxxx>
  • Date: Wed, 09 Oct 2013 01:41:24 +1100
  • Delivery-date: Tue, 08 Oct 2013 14:42:08 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xen.org>

On 10/09/2013 01:31 AM, Boris Ostrovsky wrote:
> On 10/08/2013 08:42 AM, Ian Campbell wrote:
>> On Tue, 2013-10-08 at 10:50 +1100, Steven Haigh wrote:
>>> Hi all,
>>>
>>> I've had a report of a host starting to give this output:
>>> Oct 7 19:36:37 kernel: INFO: rcu_sched self-detected stall on CPU { 2}
>>> (t=273561 jiffies g=17919 c=17918 q=9688)
>>> Oct 7 19:36:37 kernel: sending NMI to all CPUs:
>>> Oct 7 19:36:37 kernel: xen: vector 0x2 is not implemented
>> This bit is just a symptom triggered by the initial rcu stall which is
>> your real problem.
>>
>> That said I thought the NMI thing was fixed recently, which might have
>> gotten you better debugging on the rcu problem.
> 
> This went into v3.12-rc1 (commit 6efa20e).
> 
> Steven, can you try your test with newer kernels that have this fix? With
> it we should be able to see where the stall is happening.

Sadly I can't easily rebuild this to 3.12. Is it possible to get a
version / patch / commit that will work with 3.11.x?

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