This happens only on 64bit 4.13 kernels, while 32bit installations with 4.13 work fine.
It happens with any guest, even if there's no guest OS installed yet.
It does not happen at all if the host has kernel=4.10.
It does not happen at all with the newest 5.2.6 upstream virtualbox.
This is a screenshot of the host crash: https:/ /snag.gy/ HkOoeK. jpg
This happens only on 64bit 4.13 kernels, while 32bit installations with 4.13 work fine.
It happens with any guest, even if there's no guest OS installed yet.
It does not happen at all if the host has kernel=4.10.
It does not happen at all with the newest 5.2.6 upstream virtualbox.
==> Please backport VirtualBox 5.2.6 to Xenial.