I hit something like kparal's but didn't get a screenshot of the vm
console. I've had several additional freezes of the VM but there was
no call trace, just a hang, and since it's before root is mounted rw,
there's nothing in the journal. Interestingly, it never happens when I
connect with virsh console. If it's being watched, it doesn't happen.
And so far on baremetal it hasn't ever happened (I've been running the
4.11 kernels for a couple weeks).
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