** Summary changed:

- Xen guest time handling is broken across migration in 
linux-image-4.15.0-50-generic and linux-image-generic-hwe-18.04
+ Xen guest time corrupted after live migration in 
linux-image-4.15.0-50-generic and linux-image-generic-hwe-18.04

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https://bugs.launchpad.net/bugs/1830440

Title:
  Xen guest time corrupted after live migration in linux-
  image-4.15.0-50-generic and linux-image-generic-hwe-18.04

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Effects observed after migration include:
  * Stalled SSH connections.
  * A crashed or unresponsive virtual machine.
  * Inability to properly shut down the virtual machine.
  * Incorrect timestamps in dmesg output.

  The only effect that is really guaranteed is incorrect timestamps, but
  the rest are reproducible.

  This issue was fixed in version 5.0.0 of the Linux
  kernel, and the fix was backported to older supported kernels such as 4.14 
and 4.19.
  Please cherry-pick the following commit from the master branch of the Linux 
kernel's git repo:
  867cefb4cb1012f42cada1c7d1f35ac8dd276071

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