RHBA-2010:0087 - Bug Fix Advisory

Topic

Updated rgmanager packages that fix a bug are now available.

Description

The rgmanager packages contain the Red Hat Resource Group Manager, which
provides high availability of critical server applications.

This update applies the following bug fixes:

• if a thread exited as rgmanager received a request to start a new thread,

a rare race condition could lead the starting thread to incorrectly include
a reference to the old thread. This caused the new thread to not retry and
enter an infinite loop. This presented as rgmanager segfaulting or hanging
when enabling or disabling services. This update includes a fix that
ensures new threads do not reference old threads. Consequently the race
condition does not occur, new threads do not enter an infinite loop and
rgmanager enables and disables services without failing. (BZ#555925)

All Red Hat Resource Group Manager users should upgrade to these updated
packages, which resolve this issue.

Solution

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

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade. Only those
RPMs which are currently installed will be updated. Those RPMs which are
not installed but included in the list will not be updated. Note that you
can also use wildcards (*.rpm) if your current directory *only* contains
the
desired RPMs.

Please note that this update is also available via Red Hat Network. Many
people find this an easier way to apply updates. To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

Affected Products

• Red Hat Enterprise Linux High Availability for x86_64 4 x86_64
• Red Hat Enterprise Linux High Availability for x86_64 4 ppc
• Red Hat Enterprise Linux High Availability for x86_64 4 ia64
• Red Hat Enterprise Linux High Availability for x86_64 4 i386
• Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support highavailability for RHEL 4ES x86_64
• Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support highavailability for RHEL 4ES ia64
• Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support highavailability for RHEL 4ES i386
• Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support highavailability for RHEL 4AS x86_64
• Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support highavailability for RHEL 4AS ppc
• Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support highavailability for RHEL 4AS ia64
• Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support highavailability for RHEL 4AS i386

Fixes

• BZ - 555925 - zhlr471 rgmanager hang

CVEs

(none)

References

(none)