Re: [Xen-devel] Hypervisor error messages after xl block-detach with linux 3.18-rc5

[Juergen Gross <jgross@xxxxxxxx>]

On 11/24/2014 11:20 AM, Jan Beulich wrote:
> > > > On 24.11.14 at 10:55, <JGross@xxxxxxxx> 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


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