On Wed, Nov 22, 2017 at 04:04:42PM +0100, 王金浦 wrote: > So all guest kernels are 4.14, or also other older kernel? Guest kernels are also 4.14, but the issue disappears when the host is downgraded to an older kernel. I therefore reckoned that the guest kernel doesn't matter, but that was before I saw the trace in the log. Greetings Marc -- ----------------------------------------------------------------------------- Marc Haber | "I don't trust Computers. They | Mailadresse im Header Leimen, Germany | lose things." Winona Ryder | Fon: *49 6224 1600402 Nordisch by Nature | How to make an American Quilt | Fax: *49 6224 1600421