Kernel update: Virtuozzo ReadyKernel patch 44.0 for Virtuozzo 7.0.4 and 7.0.4 HF3, and 7.0.5

2018-02-22T00:00:00
ID VZA-2018-009
Type virtuozzo
Reporter Virtuozzo
Modified 2018-02-22T00:00:00

Description

The cumulative Virtuozzo ReadyKernel patch was updated with stability fixes. The patch applies to Virtuozzo kernels 3.10.0-514.16.1.vz7.30.10 (Virtuozzo 7.0.4), 3.10.0-514.16.1.vz7.30.15 (Virtuozzo 7.0.4 HF3), and 3.10.0-514.26.1.vz7.33.22 (Virtuozzo 7.0.5). Vulnerability id: PSBM-80340 Hard lockups happened when the kernel was processing SAK (Secure Attention Key).

Vulnerability id: PSBM-81264 Memory cgroups were not correctly released during start/stop of containers with Docker. If the node had a significant amount of such containers, this could lead to stopped containers not starting again.

Vulnerability id: PSBM-81488 vstorage-mount spent a lot of time in isolate_freepages_block() in some cases, causing performance issues.

Vulnerability id: PSBM-81600 Ploop: some I/O requests were not marked as completed in case of errors.