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

• Improves the process exit procedure for processes that have had the nice command
used on them.
• Corrects a potential security vulnerability where, under certain circumstances,
system integrity may be compromised. This may be in the form of improper file
access.
• Fixes multiple defects in AutoFS user space and kernel code.
• Corrects performance issues when accessing a file with direct I/O enabled.
• Fixes a condition that causes a panic when appending to a file.
• Eliminates a false directory lookup warning message generated by an incorrect
comparison caused by mismatched file ID variable types.
• Improves client caching performance.
• Prevents the loss of a single system image for an NFS file system mounted from
a cluster when there are certain problems communicating with the external NFS
server.
• Fixes a problem with audit data not being displayed by the audit tool.
• Corrects problems with file object selection and deselection and directories.
• Addresses NUMA performance issues associated with auditing.
• Introduces type checking of attributes when registering components with the
hardware manager.
• Adds IEEE 802.1Q (VLAN) support.
• Fixes a panic within the two-level scheduling subsystem.
• Fixes a process hang condition.
• Fixes a "thread_block: simple lock held" panic.
• Fixes an occasional panic that can be seen when reading from a process using
Granularity Hints with the procfs command.
• Corrects a problem that causes a system to panic during a particular machine
check.
• Corrects 3D client hangs when using the Radeon graphics card.
• Fixes a condition that causes a system to hang when using Open3D over the AGP
bus on an AlphaServer GS1280.
• Protects against "get_color_bucket: empty buckets!" panics and "kernel memory
fault" failures on systems with mixed cache parameters.
• Fixes a kernel memory fault in shadowvnode() caused by a null vnode pointer.
• Fixes insmntque() to conform to proper locking when removing and adding a
vnode to the mount vlist.
• Fixes a condition that causes an excessive FIDS_LOCK contention when large
numbers of files are using system-based file locking.
• Fixes an issue encountered in configurations in which the primary processor is
not the first processor within a RAD.
3.4 Summary of Base Operating System Patches 123