Kernel update: Virtuozzo ReadyKernel patch 102.0 for Virtuozzo 7.0, Virtuozzo Infrastructure Platform 2.5, 3.0 and Virtuozzo Hybrid Infrastructure 3.5

Issue date: 2020-04-06

Applies to: Virtuozzo 7.0, Virtuozzo Infrastructure Platform 2.5, Virtuozzo Infrastructure Platform 3.0, Virtuozzo Hybrid Infrastructure 3.5

Virtuozzo Advisory ID: VZA-2020-026

1. Overview

The cumulative Virtuozzo ReadyKernel patch was updated with stability fixes. The patch applies to the kernels 3.10.0-862.11.6.vz7.64.7 (Virtuozzo 7.0.8 HF1), 3.10.0-862.20.2.vz7.73.24 (Virtuozzo 7.0.9 and Virtuozzo Infrastructure Platform 2.5), 3.10.0-862.20.2.vz7.73.29 (Virtuozzo 7.0.9 and Virtuozzo Infrastructure Platform 2.5), 3.10.0-957.10.1.vz7.85.17 (Virtuozzo 7.0.10), 3.10.0-957.12.2.vz7.86.2 (Virtuozzo 7.0.10 HF1), 3.10.0-957.12.2.vz7.96.21 (Virtuozzo 7.0.11 and Virtuozzo Infrastructure Platform 3.0), 3.10.0-1062.4.2.vz7.116.7 (Virtuozzo 7.0.12 HF1 and and Virtuozzo Hybrid Infrastructure 3.5), 3.10.0-1062.12.1.vz7.131.10 (Virtuozzo 7.0.13). NOTE: No more patches are planned for the kernel 3.10.0-862.11.6.vz7.64.7, support for which ends with this update.

2. Bug Fixes

  • [3.10.0-862.11.6.vz7.64.7 to 3.10.0-1062.12.1.vz7.131.10] A container with NFS server could force other such containers to use the older NFSv4 client tracker, which slows down NFS mounts. (PSBM-102363)

  • [3.10.0-1062.12.1.vz7.131.10] ext4: potential kernel crash (general protection fault) in ext4_free_blocks(). (PSBM-102478)

  • [3.10.0-862.11.6.vz7.64.7 to 3.10.0-1062.12.1.vz7.131.10] netfilter: kernel crash in the implementation of nf_tables due to use-after-free in dynamic operations. (PSBM-102655)

  • [3.10.0-862.11.6.vz7.64.7 to 3.10.0-1062.12.1.vz7.131.10] mpt2sas: scheduling while atomic in _scsih_io_done(). (VSTOR-32221)

3. Installing the Update

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