Vagrant 中的日期跳转至 2285 年

Question

昨天发生了，今天又发生了。

我机器上的流浪盒跳到了2285年

(venv3.9.0) root@v-yf:/var/log# timedatectl 
                      Local time: Mon 2285-09-21 06:15:40 CET
                  Universal time: Mon 2285-09-21 05:15:40 UTC
                        RTC time: Thu 2021-01-07 14:25:15
                       Time zone: Europe/Berlin (CET, +0100)
       System clock synchronized: no
systemd-timesyncd.service active: yes
                 RTC in local TZ: no

来自 /var/log/syslog

Jan  7 14:35:01 v-yf CRON[5823]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
Sep 21 05:32:03 v-yf kernel: [8318599810.152743] hrtimer: interrupt took 80102242147 ns
Sep 21 05:32:03 v-yf kernel: [8318599810.152814] clocksource: timekeeping watchdog on CPU0: Marking clocksource 'tsc' as unstable because the skew is too large:
Sep 21 05:32:03 v-yf kernel: [8318599810.152825] clocksource:                       'kvm-clock' wd_now: 73719a74f60024e0 wd_last: 11027f6d11a9 mask: ffffffffffffffff
Sep 21 05:32:03 v-yf kernel: [8318599810.152834] clocksource:                       'tsc' cs_now: fffff7900a43c874 cs_last: 25b8395a9da9 mask: ffffffffffffffff
Sep 21 05:32:03 v-yf kernel: [8318599810.152843] tsc: Marking TSC unstable due to clocksource watchdog

我的笔记本电脑运行 Ubuntu 20.04、Vagrant Ubuntu 18.04

这样的事已经发生过三次了。

可能是什么原因？