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Virtuozzo ReadyKernel patch 135.0 for Virtuozzo Server 7.5

Issue date: 2021-11-23

Applies to: Virtuozzo Server 7.5

Virtuozzo Advisory ID: VZA-2021-054

1. Overview

The cumulative Virtuozzo ReadyKernel patch was updated with a stability fix. The patch applies to the kernels 3.10.0-1160.21.1.vz7.174.13 (Virtuozzo Server 7.5 Update 1), 3.10.0-1160.41.1.vz7.183.5 (Virtuozzo Server 7.5 Update 2).

2. Bug Fixes

  • [3.10.0-1160.21.1.vz7.174.13 to 3.10.0-1160.41.1.vz7.183.5] Virtual machines might fail to start on a host with AMD Milan CPU. It was discovered that virtual machines on the hosts with AMD Milan CPUs could try to set IA32_SPEC_CTRL MSR during their startup and would fail to start: qemu-kvm would be killed by SIGABRT. (PSBM-131551)

3. Installing the Update

Download, install, and immediately apply the patch to the current kernel by running ‘readykernel update’.

4. References

The new and updated packages are listed in the JSON file.