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Re: [Xen-devel] Immediate reboot on Xen kernel 4.9.13 ->4.9.20 load, but non-Xen is OK

>>> On 06.04.17 at 19:12, <pjwelsh@xxxxxxxxx> wrote:
> I started off my attempt to figure out what's going on with the centos-virt
> group as that is the Xen entry point I use for server. It was recommended
> to me to put my issue here. This is the beginging of the thread:
> https://lists.centos.org/pipermail/centos-virt/2017-March/005411.html 
> George suggested I seek help from xen-devel:
> https://lists.centos.org/pipermail/centos-virt/2017-March/005442.html 
> Summary:
> Within about 2 seconds of starting the servers with the Xen enabled kernel,
> the server will reboot:
> The last few lines are
> NMI watchdog: disabled CPU0 hardware events not enabled
> NMI watchdog: shutting down hard lockup detector on all CPUS
> installing Xen timer for CPU1
> installing Xen timer for CPU2
> installing Xen timer for CPU3
> installing Xen timer for CPU4
> installing Xen timer for CPU5
> installing Xen timer for CPU6
> Here is the screen shot:
> https://goo.gl/photos/yNQqaQY9bJBWQ84X8 
> It stops at CPU6. This is a dual socket server with 2x 6core L5639 CPUs (HT
> disabled). I'm surprised to see it stop at 6.

It may indeed be unexpected, but without seeing hypervisor
messages we won't know enough details about your issue.


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