Article ID: 113302, created on Feb 8, 2012, last review on May 3, 2014

  • Applies to:
  • Virtuozzo hypervisor 5.0

Release notes

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Synopsis:          New Parallels Server Bare Metal 5.0 kernel provides
                   an update with security and stability fixes.
Issue date:        2012-01-08
Product:           Parallels Server Bare Metal 5.0
Keywords:          'bugfix' 'stability' 'security'
 
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This document provides information on the new Parallels Server Bare Metal 5.0
kernel, version 2.6.32-042stab049.6.
 
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TABLE OF CONTENTS
 
1. About This Release
2. Updates Description
3. Obtaining New Kernel
4. Installing New Kernel
5. Required RPMs
6. References
 
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1. ABOUT THIS RELEASE
 
The current update for the Parallels Server Bare Metal 5.0 kernel provides a new
kernel based on the Red Hat 6.2 kernel (2.6.32-220.4.1.el6). The updated
kernel includes a number of security and stability fixes.
 
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2. UPDATES DESCRIPTION
 
This update contains fixes for the following issues:
 
* The migration code had been enhanced with support for event notification
  mechnism (eventfd). Previously an online migration of a Container running
  an Apache server with Phusion Passenger module loaded could fail. (OVZ# 2128)
 
* "free" command had been enhanced to not to include the amount of precharged
  memory inside a Container into the reported "Used" memory value. (PCLIN-30449)
 
* kernel memory allocations on behalf of a Container could fail even in case
  the Container has memory used by directory entries cache which can be shrunk.
  (OVZ# 2103)
 
* A complex race in hrtimer code could result in a CPU lockup which is detected
  by NMI watchdog. (PCLIN-30489)
 
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3. OBTAINING NEW KERNEL
 
You can download and install this kernel update using the vzup2date utility
included in the Parallels Server Bare Metal 5.0 distribution set.
 
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4. INSTALLING NEW KERNEL
 
To install the update, do the following:
 
I. Use the "rpm -ihv" command to install the new kernel and Virtuozzo modules.
 
# rpm -ivh vzkernel-2.6.32-042stab049.6.i686.rpm \
vzmodules-2.6.32-042stab049.6.i686.rpm
Preparing...                ################################# [100%]
    1:vzkernel               ################################# [50%]
    2:vzmodules              ################################# [100%]
 
    Please DO NOT USE the "rpm -Uhv" command to install the kernel. Otherwise,
    all the kernels previously installed on your system may be removed from
    the Hardware Node.
 
II. You can adjust your boot loader configuration file to have the new kernel
    loaded by default. If you use the LILO bootloader, please do not forget to
    execute the 'lilo' command to write the changes to the boot sector:
 
     # lilo
     Added Virtuozzo2 *
     Added Virtuozzo1
     Added linux
     Added linux-up
 
III. Reboot your computer with the "shutdown -r now" command to boot the new
     kernel.
 
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5. REQUIRED RPMS
 
Depending on the processor installed on the Hardware Node, the following RPM
packages are included in the kernel update:
 
x86_64 kernels:
 
- SMP:
   vzkernel-2.6.32-042stab049.6.x86_64.rpm
   vzmodules-2.6.32-042stab049.6.x86_64.rpm
 
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6. REFERENCES
 
https://rhn.redhat.com/errata/RHSA-2011-1530.html
https://www.redhat.com/security/data/cve/CVE-2011-1020.html
https://www.redhat.com/security/data/cve/CVE-2011-3347.html
https://www.redhat.com/security/data/cve/CVE-2011-3638.html
https://www.redhat.com/security/data/cve/CVE-2011-4110.html
 
https://rhn.redhat.com/errata/RHSA-2011-1849.html
https://www.redhat.com/security/data/cve/CVE-2011-4127.html
 
https://rhn.redhat.com/errata/RHSA-2012-0052.html
https://www.redhat.com/security/data/cve/CVE-2012-0056.html
 
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Copyright (c) 1999-2012 Parallels Holdings, Ltd. and its affiliates. All rights
reserved.
 

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