Kernel update: Virtuozzo ReadyKernel patch 59.0 for Virtuozzo 7.0.7 to 7.0.7 HF3¶

1. Overview¶

The cumulative Virtuozzo ReadyKernel patch was updated with stability fixes. The patch applies to Virtuozzo 7.0.7 to 7.0.7 HF3.

2. Bug Fixes¶

• sunrpc: potential kernel crash (use after free) in svc_process_common(). (PSBM-73001)

• ‘libvirtd’ service was unresponsive because ‘cgroup_mutex’ was held for a long time. (PSBM-87281)

• Host system could hang because of a leaked cache-related counter in memcg. (PSBM-87642)

• Potential out-of-bounds read in fuse_dev_splice_write(). (PSBM-87649)

• Attempts to start a container fail with errors like ‘cannot create directory /sys/fs/cgroup/beancounter/<…>’. (PSBM-87670)

3. Installing the Update¶

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

4. References¶

• https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-43.10-59.0-1.vl7/

• https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-46.7-59.0-1.vl7/

• https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-48.2-59.0-1.vl7/

The JSON file with the list of new and updated packages is available at https://docs.virtuozzo.com/vza/VZA-2018-058.json.