Kernel update: Virtuozzo ReadyKernel patch 79.0 for Virtuozzo 7.0 Update 10

Issue date: 2019-05-16

Applies to: Virtuozzo 7.0

Virtuozzo Advisory ID: VZA-2019-038

1. Overview

The cumulative Virtuozzo ReadyKernel patch was updated with stability fixes. The patch applies to the kernel 3.10.0-957.10.1.vz7.85.17 (Virtuozzo 7.0 Update 10).

2. Bug Fixes

  • It was found that the memcg ID number of a cgroup was released earlier than needed and could be reused by a different cgroup. As a result, certain reference counters could become corrupted, leading to a kernel crash in memcg_css_release_check_kmem(). (PSBM-94269)

  • Freeing of a memory cgroup took longer than needed in certain cases. (PSBM-94398)

3. Installing the Update

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

4. References

The JSON file with the list of new and updated packages is available at