HP Tru64 UNIX and TruCluster Server Version 5.1B-5 Patch Summary and Release Notes (March 2009)

• Fixes the following panics:
mcs_unlock: lock not currently owned
the zombie walks, the sequel
• Changes I/O retry processing when a command time out is encountered by causing
the retry code to attempt to take advantage of other active paths during retries if
command time outs are encountered.
• Fixes a rare lock timeout on some AlphaServer ES47/ES80/GS1280 systems with
heavy binary errorlog activity.
• Fixes a "vl_unwire: page is not wired" panic when the system is configured with
gh_chunks or rad_gh_regions enabled and new_wire_method = 1.
• Retires the "new_wire_method" sysconfig tunable paramater. See
“new_wire_method Tunable Attribute Retired”.
• Corrects a potential security vulnerability in the Transmission Control Protocol
(TCP) that could be remotely exploitable, resulting in denial of service (DoS).
SSRT4696 - TCP (Severity - High)
• Corrects a potential security vulnerability that could result in a Denial of Service
(DoS). This potential vulnerability may be in the form of local and remote security
domain risks.
• Fixes a panic in ubc_bigpage_release().
• Fixes a problem that causes the audgen system call to overwrite memory beyond
the end of the audit buffer.
Patch 27011.00
OSFBINCOM540
• Fixes a rare kernel memory fault problem that occurs during an ES80 boot.
• Provides a new cluster-specific link aggregation distribution algorithm when using
LAG in a LAN cluster.
• Allows for control ports to be deleted using the hwmgr command.
• Fixes a potential deadlock hang between a migration and a flush on a file.
• Addresses a potential I/O performance bottleneck in which the tape driver may
select the same path for all tape drives in a system containing multiple HBAs and
multiple tapes. The tape driver can now assign different paths to different tape
drives to improve tape I/O performance.
• Fixes problems that happen when volume expansion (mount -u -o extend) races
with other code.
• Corrects a C++ compilation error when including conf.h.
• Makes the poll() function compliant with revised UNIX98 standards.
3.4 Summary of Base Operating System Patches 137