HP Tru64 UNIX and TruCluster Server Version 5.1.B-4 Patch Summary and Release Notes (13156)

• Handles reservation conflict errors to address cluster node hang during boot.
• Updates the audit system to display additional information for numa_syscalls and
msfs_syscall system calls.
• Provides a tunable attribute to allow the reserving of a percentage of vnodes for root use.
• Fixes an issue in the VM subsystem in which a page that is not managed by VM is incorrectly
identified as being managed by VM.
• Fixes a problem in UFS superblock update logic that could result in a failure to report errors
encountered when writing cylinder group summary blocks.
• Provides a new cluster-specific link aggregation distribution algorithm when using LAG in
a LAN cluster.
• Reduces fork/exec overhead on systems with large default stack sizes.
• Fixes a cluster deadlock/hang issue when a new device is discovered.
• Fixes a kernel memory fault panic that occurs during a NetRAIN interface failure.
• Fixes a CPU hang caused by /dev/random.
• Corrects a condition that causes a process hang and system panic when using System V
shared memory and asynchronous I/O.
• Corrects a minor tuning issue with netisrthreads on NUMA machines. Previously, four
netisr threads were started per RAD, whereas the default number of netisr threads per RAD
now equals the number of CPUs per RAD.
• Fixes problems with RPC for configurations with no RAD 0.
• Fixes a problem in which unkillable processes occur when debugging multi-threaded
programs with the totalview debugger on a Sierra Cluster.
• Fixes an underlying problem in NFS that can trigger an assert failure in CFS. These conditions
can be triggered by a failed NFS mount.
• Resolves a synchronization issue between pageout and exit paths.
• Introduces sysconfig tunable attibutes for NFS/RPC
• Fixes multiple panics and application hangs seen when interacting with Process Shared
POSIX 1003.1c objects.
• Fixes the handling of NFS requests that have an erroneous file handle length field.
• Corrects the output of wired pages and gh regions found in the -P option of the vmstat
command when run on a NUMA system.
• Improves the performance and chances of success of the Tru64 kernel malloc routine,
especially when used by drivers which use the M_NOWAIT option.
• Fixes an invalid kernel memory fault panic in the code responsible for the generation of
random numbers.
• Corrects a defect in the audit subsystem that causes it to fail to record inode information on
closed file descriptors.
• Corrects a problem that occurs after an upgrade from Version 5.1B patch kit 3 to Version
5.1B-3 (PK5) in which the system may fail to boot with the following panic:
KMF - invalid memory read access from kernel mode
• Fixes a race within NFS over TCP when connection reaches idle timeout.
• Improves the performance of Tru64's MACH implementation and also enhances stability
while under heavy load.
• Corrects several potential security vulnerabilities in TCP/IP, including ICMP. These exploits
could result in a remote Denial of Service (DoS) from predictable Initial Sequence Numbers
(ISNs), network throughput reduction for TCP connections, or the reset of TCP connections.
• Corrects the following potential security vulnerabilities:
SSRT4743, SSRT4884 - TCP/IP ICMP (Severity - High)
• Fixes a panic condition resulting from DVDFS using a deallocated vnode.
3.4 Summary of Base Operating System Patches 65