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

• Fixes a problem where the system can panic with a kernel memory fault in
simple_lock() being called from fuser().
• Resolves kernel memory faults in the TCP/IP subsystem.
• Fixes a problem where threads can hang mallocing memory.
• Increases the default values for udp_ttl and tcp_ttl to 128 hops.
• Fixes a condition that causes the "rdg: unwiring" panic.
• Increases the default limit of DLI packets to 16 KB and makes the limit tunable.
This corrects a problem in which attempts to send packets larger than 5000 bytes
(jumbo packets) can fail.
• Improves the fragment gathering mechanism to boost performance.
• Corrects a problem in which the auditd -d command (which flushes the kernel
audit buffers) could cause audit data inconsistencies on a multi-CPU machine on
systems generating a heavy volume of audit events.
• Provides a base system routine for use by the cluster code to determine if a
particular mount has an NFS exported file or directory on it.
• Corrects a problem in which a user process cannot be interrupted, which in some
instances can be utilized in a denial of service attack.
• Corrects a kernel memory fault caused by uninitialized or incorrect parameters
being passed to the setsockopt system calls.
• Fixes a condition that causes a kernel memory fault panic in the IP multicast
loopback code.
• Corrects a problem in which multi-CPU sometimes livelock while processing
incoming network traffic. In some cases the live lock can result in a cluster event
timeout panic.
• Resolves internet protocol conformance issues and fixes a problem with sending
multicast datagrams.
• Fixes a condition that can cause crashes from within the pshared subsystem
• Fixes several IPMI-related problems, including the following:
— Erroneous fields in 686 OS-detected environmental machine check logout frame
— Unusually large number of 686 sensor timeouts with heavy system load
— IPMI always reporting -48v sensors as broken, seen as "redundant power supply
failed" messages
— An IPMI memory leak
• Corrects problems in UFS extendfs functionality that cause file system metadata
inconsistencies.
• Corrects the default parameter for physio_max_coalescing to 8K.
• Addresses an issue on large systems in which kernel threads might not be executed
for extended periods of time.
• Fixes two small logic errors with the NFS version 3 client that result in unintended,
though correct, behavior.
3.4 Summary of Base Operating System Patches 127