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Kernel update: Virtuozzo ReadyKernel patch 107.0 for Virtuozzo 7.0, Virtuozzo Infrastructure Platform 2.5, 3.0 and Virtuozzo Hybrid Infrastructure 3.5

Issue date: 2020-06-01

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

Virtuozzo Advisory ID: VZA-2020-040

1. Overview

The cumulative Virtuozzo ReadyKernel patch was updated with stability fixes. The patch applies to the kernels 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 Virtuozzo Hybrid Infrastructure 3.5), 3.10.0-1062.12.1.vz7.131.10 (Virtuozzo 7.0.13).

2. Bug Fixes

  • [3.10.0-957.12.2.vz7.96.21 to 3.10.0-1062.12.1.vz7.131.10] memcg: kernel could crash when memory was uncharged from a cgroup while the cgroup was going offline. It was found that a race was possible between uncharging memory from a cgroup and making that cgroup offline. This could lead to premature destruction of the cgroup and could cause a kernel crash. (PSBM-103975)

  • [3.10.0-957.12.2.vz7.96.21 to 3.10.0-1062.12.1.vz7.131.10] netlink: performance issues due to direct memory reclaim in netlink_dump() and netlink_trim(). (PSBM-104086)

  • [3.10.0-957.12.2.vz7.96.21 to 3.10.0-1062.12.1.vz7.131.10] ext4: attempts to freeze the FS could hang in certain cases due to an unbalanced internal write counter. (PSBM-104342)

  • [3.10.0-862.20.2.vz7.73.29 to 3.10.0-1062.12.1.vz7.131.10] nf_conntrack: potential kernel crash in netlink_has_listeners(). (PSBM-104387)

3. Installing the Update

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

Nov 18, 2024
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