RHBA-2010:0629 - Bug Fix Advisory

Topic

An updated openais package that fixes various bugs is now available.

Description

The Application Interface Specification (AIS) is an API and a set of policies
for developing applications that maintain services during faults. The OpenAIS
Standards Based Cluster Framework is an OSI-certified implementation of the
Service Availability Forum AIS. The openais package contains the openais
executable, OpenAIS service handlers, default configuration files and an init
script.

This updated openais package provides fixes for the following bugs:

• in high loss networks, all nodes in a cluster experienced a buffer overflow

and aborted when a threshold of unprocessed/not transmitted packets was reached.
With this update, even when a significant number of packets is unprocessed/not
transmitted, all nodes in a cluster work as expected and do not abort.
(BZ#601086)

• when an Openais client process sent an event to the server (aisexec), the

server stopped working. When the client process tried to send the event using
the saEvtEventPublish() function, it hanged indefinitely on a semaphore
(semop()) operation. Even when the server was restarted, the blocked client
process was still blocked. With this update, the client process no longer hangs
indefinitely and is unblocked after a set period of time. (BZ#603615)

• when the openais server was stopped, server clients may have encountered a

segmentation fault because of an invalid return code in an internal function.
With this update, the segmentation fault no longer occurs. (BZ#603623)

• previously, CPG API returned the wrong results when a cluster component failed

that was using openais. With this update, the correct results are returned.
(BZ#618766)

• previously, openais returned a segmentation fault if it received a CPQ

message. With this update, new message IDs are introduced into the CPQ service
so that the CPQ messages no longer cause a segmentation fault in openais.
(BZ#611931)

All users of openais are advised to upgrade to this updated package, which
resolves these issues.

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
http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 ia64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux for Power, big endian 5 ppc
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

• BZ - 601086 - All nodes fail during recovery with stack protector sigabrt
• BZ - 603615 - Openais client blocked indefinitely on semaphore when the server goes down
• BZ - 603623 - When dispatch_avail is set to -1 (openais server is killed), library functions segfault
• BZ - 611931 - corosync 2801 introduces need for compat patch in rhel to roll
• BZ - 618766 - killing process gives CPG_REASON_LEAVE instead of CPG_REASON_PROCDOWN

CVEs

(none)

References

(none)