RHBA-2011:0495 - Bug Fix Advisory

Topic

An updated openais package that fixes various bugs is now available for Red Hat
Enterprise Linux 5.

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 update fixes for the following bugs:

• When a system limit for semaphores or shared memory was exceeded on SysV, the

openais client sometimes went into a loop. With this update, the openais client
handles the situation properly, and no longer enters an infinite loop when
either of these limits is exceeded. (BZ#694180)

• When the OpenAIS limit for open files was exceeded, the openais executable

terminated unexpectedly. With this update, if the limit is reached, the
published server listening socket is withdrawn and the connection closes without
causing any crashes. (BZ#694181)

• Previously, if a token was lost in the recovery state, the openais executable

sometimes accepted a commit token with old ring ID information. This resulted in
an unexpected termination. This bug has been fixed and lost tokens are now
handled properly. (BZ#694182).

• When the ring ID file for a processor was less then 8 bytes long, totemsrp

terminated unexpectedly. Now, OpenAIS always creates fresh ring ID file data
when an incorrect number of bytes are read from the ring ID. (BZ#694183)

All users of openais are advised to upgrade to this updated package, which fixes
these bugs.

Solution

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

This update is available via Red Hat Network. Details on how to use the Red
Hat Network to apply this update are available at
https://access.redhat.com/kb/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 for x86_64 - Extended Update Support 5.6 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 5.6 ia64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 5.6 i386
• Red Hat Enterprise Linux Server - AUS 5.6 x86_64
• Red Hat Enterprise Linux Server - AUS 5.6 ia64
• Red Hat Enterprise Linux Server - AUS 5.6 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 for Power, big endian - Extended Update Support 5.6 ppc
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 5.6 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 5.6 i386

Fixes

• BZ - 694180 - aisexec spins when semaphores run out
• BZ - 694181 - Crashing when going over open file limits.
• BZ - 694182 - token loss during recovery can trigger abort
• BZ - 694183 - openais assert when leftover ring files are present in /var/lib/openais

CVEs

(none)

References

(none)