[Bug 1777674] Re: Ubuntu 18.04 hangs at "kvm: exiting hardware virtualization" on AMD servers

[Sujith Pandel]

Moving the bug-report back to Confirmed since these logs like "kvm exiting hardware virt" and the logs post this are not stored on the physical disks (reason - disks are already unmounted).
Such logs are available only in the console logs which are already uploaded in this report.

** Changed in: linux (Ubuntu)
       Status: Incomplete => Confirmed

** Changed in: linux (Ubuntu)
       Status: Confirmed => New

** Changed in: linux (Ubuntu)
       Status: New => Confirmed

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Title:
  Ubuntu 18.04 hangs at "kvm: exiting hardware virtualization" on AMD
  servers

Status in dellserver:
  New
Status in linux package in Ubuntu:
  Confirmed
Status in systemd package in Ubuntu:
  New

Bug description:
  Ubuntu 18.04 hangs at "kvm: exiting hardware virtualization" on AMD
  servers when under graceful reboot stress for 12hrs.

  * This hand is observed only when Onboard SATA DVD Drive is connected.

  * Not seen with Ubuntu 16.04.4 (HWE kernel v4.13)

  * Seen with Ubuntu 18.04 (4.15.0-23-generic, 4.15.0-20-generic)

  Steps:
  Setup a DellEMC AMD server with Onboard DVD Drive, install Ubuntu 18.04 and start reboot stress
  After a few reboots, observe that the machine hangs at "kvm: exiting hardware virtualization" and does not proceed with reboot cycles.

  Only physical reset helps in continuing the reboot test.

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