Issued:

2013-02-20

Updated:

2013-02-20

RHBA-2013:0401 - numactl bug fix and enhancement update

Synopsis

numactl bug fix and enhancement update

Type/Severity

Bug Fix Advisory (none)

Topic

Updated numactl packages that fix several bugs and add one enhancement are now available for Red Hat Enterprise Linux 6.

Description

The numactl packages provide a simple Non-Uniform Memory Access (NUMA) policy support and consist of the numactl program to run other programs with a specific NUMA policy and the libnuma library to do allocations in applications using the NUMA policy.

This update fixes the following bugs:

• Previously, the number of CPUs were miscalculated in the "/sys/devices/system/cpu" directory, because the "cpufreq" and "cpuidle" files were counted, so, the additional two CPUs were added erroneously. With this update, the number of CPUs is now counted correctly. (BZ#804480)

• The global pointer "numa_all_cpus_ptr" was supposed to be set to a bitmask allocated by the library with bits that represent all CPUs on which the calling thread can execute. Consequently, it did not function as documented when the bitmask was only set to CPU0. With this update, the underlying source code is now fixed and the "numa_all_cpus_ptr" contains only specified CPUs, when the taskset option contains CPU0. (BZ#814294)

In addition, this update adds the following enhancement:

• The existing tool numastat, which was a Perl script, was rewritten to a C program to provide much more NUMA information. The default operation of numastat will remain the same for compatibility with current users' end scripts. (BZ#829896)

Users of numactl are advised to upgrade to these updated packages, which fix these bugs and add this enhancement.

Solution

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258

Affected Products

Updated Packages

• numactl-devel-2.0.7-6.el6.i686.rpm
• numactl-2.0.7-6.el6.src.rpm
• numactl-debuginfo-2.0.7-6.el6.ppc.rpm
• numactl-debuginfo-2.0.7-6.el6.i686.rpm
• numactl-debuginfo-2.0.7-6.el6.x86_64.rpm
• numactl-2.0.7-6.el6.ppc64.rpm
• numactl-devel-2.0.7-6.el6.ppc64.rpm
• numactl-2.0.7-6.el6.x86_64.rpm
• numactl-2.0.7-6.el6.ppc.rpm
• numactl-devel-2.0.7-6.el6.x86_64.rpm
• numactl-2.0.7-6.el6.i686.rpm
• numactl-debuginfo-2.0.7-6.el6.ppc64.rpm
• numactl-devel-2.0.7-6.el6.ppc.rpm

Fixes

• This content is not included.BZ - 811614
• This content is not included.BZ - 814294

CVEs

(none)

References

(none)

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.