RHBA-2012:1463 - Bug Fix Advisory

Topic

Updated procps packages that fix two bugs are now available for Red Hat
Enterprise Linux 6.

Description

The procps packages provide a set of system utilities to provide system
information using the /proc file system. The procps package includes the free,
pgrep, pkill, pmap, ps, pwdx, skill, slabtop, snice, sysctl, tload, top, uptime,
vmstat, w, and watch utilities.

This update fixes the following bugs:

• Prior to this update, the 'si' and 'so' values were always zero for "m" or "M"

units. This was caused by an arithmetic precision loss in the expressions used
for the calculations. This update modifies the expressions to avoid precision
losses. (BZ#851664)

• Prior to this update, the vmstat tool could be terminated unexpectedly raising

the SIGFPE exception when the total sum of 'us', 'sy', 'id', 'wa' and 'st'
values returned by the kernel was zero. This situation could only appear on
certain specific platforms. this update modifies the internal evaluation so that
the vmstat tool is more robust and does no longer terminate. (BZ#875077)

All users of procps are advised to upgrade to these updated packages, which fix
these bugs.

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

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems) 6 s390x

Fixes

• BZ - 875077 - vmstat crashing on s390x

CVEs

(none)

References

(none)