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

• Corrects a race condition that may result in hung disks under certain circumstances, for
example, after a SCSI reset.
• Corrects problems in which tape devices become unavailable, do not respond, report
unrecoverable errors, or cause a kernel memory fault.
• Corrects problems in the aha_chim driver that could result in bus hangs, panics and
inappropriate access of freed memory during high rate of bus resets.
• Modifies the changer device driver so that it reports the manufacturer ID attribute as could
be seen with the hwmgr -view devices command.
• Fixes a problem in the alt driver that prevents DEGPA from being used with DE50x or DE60x
adapters in a LAG set.
• Fixes the cause of the panic “dg: unwiring.”
• Fixes a problem in the KZPCA itpsa driver that occurs when a SCSI target presents multiple
LUNs.
• Prevents problems in the USB subsystem, including memory leaks, data inconsistencies,
and USB device configuration problems.
• Installs Version 1.11 of the ciss driver.
• Fixes problems in the USB driver layer, inc.luding minor performance degradations and
device failures.
• Reduces the delay with hwmgr of EV7 based machines by reducing the number of calls to
the console to update sensor data.
• 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
• Restores the well known panic strings "Processor Machine Check" and "System Uncorrectable
Machine Check," which had been replaced by more specific error strings. With this patch,
both the old panic strings and the more specific ones will be issued.
• Adds recognition for possible future devices.
• Adds the capability for KZPCA devices to work with SCSI devices that only support
asynchronous data transfers.
• Fixes a problem in which the SDLT media causes bus resets.
• Corrects problems that can result in tape devices not responding or in a kernel memory fault
when the FNDELAY flag is set in tape open and tape ioctl.
• Addresses an issue in which I/O may not complete under certain circumstances.
• Installs version 1.12 of the ciss driver to correct a condition that causes an AlphaServer GS80
to hang following an Smart Array 5300 reset.
• Corrects lockmode 4 problem in cdisk_event_notify.
• Corrects a condition in which a system may panic with a kernel memory fault when a device
that is being opened by one program is being deleted via the hwmgr utility.
• Corrects an illegal instruction that causes a rare system crash.
• Fixes a problem in which the user cannot connect to a printer on the parallel port after
cancelling a print job.
• Adds support for EV7 class machines (for example, the AlphaServer GS1280) to allow the
use of processors having different speeds in the same chassis.
• Corrects a condition in which the KZPEA firmware fails to correctly handle file marks with
odd byte transfers.
• Fixes a problem in the PCI bus code that can prevent some functions on a multifunction PCI
card from being configured.
3.4 Summary of Base Operating System Patches 119