From mboxrd@z Thu Jan  1 00:00:00 1970
From: Juergen Gross <jgross@suse.com>
Subject: Re: Hypervisor error messages after xl block-detach
 with linux 3.18-rc5
Date: Mon, 24 Nov 2014 11:59:27 +0100
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To: Jan Beulich <JBeulich@suse.com>
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On 11/24/2014 11:20 AM, Jan Beulich wrote:
>>>> On 24.11.14 at 10:55, <JGross@suse.com> wrote:
>> - Sometimes I see only NMI watchdog messages, looking into hanging cpu
>>     state via xen debug keys I can see the cpu(s) in question are spinning
>>     in _raw_spin_lock():
>>     __handle_mm_fault()->__pte_alloc()->pmd_lock()->_raw_spin_lock()
>>     The hanging cpus were executing some random user processes (cron,
>>     bash, xargs), cr2 contained user addresses.
>
> Is this perhaps what
> http://lists.xenproject.org/archives/html/xen-devel/2014-11/msg02135.html
> appears to be about?

Hmm, I'm not sure.

I'll try a 3.17 kernel to verify.


Juergen