This patch corrects the following:

- Fixes "kernel memory fault" panics from the kernel malloc() routine when
  System V FIFOs created via STREAMS and fattach() are in use.

- System panics with a kernel memory fault or "malloc_audit: guard space 
  corruption" with osr_run as an entry in the stack.

- This patch prevents delivery of data in subsequent streams messages with one 
  read of a streams pipe.  This problem only happens if the read has a message 
  length greater than the length of the first message in the pipe.

- Fixes a problem that occurs when running STREAMS.  The system panics with
  a kernel memory fault in either osr_run() or osr_reopen().

- Fixes the problem of a system hang due to corruption of a STREAM 
  synchronization queue's forward pointer.  The system hangs in the
  csq_cleanup() function.

- Fixes a problem in the streams code which could have resulted in data
  corruption.

- Fixes a problem that occurs on a system when running STREAMS.  The system
  panics with the following error message:

  "kernel memory fault"

- The ASDU netbeui server (nbelink) will not close a connection.  It will hang
  in dlcb_close awaiting a STREAMS event.  Subsequently, new connections will
  not be able to connect to nbelink.

- The STREAMS tty line discipline not correctly processing type ahead
  characters.  Also this patch fixes a delay in closing the STREAMS tty
  line discipline (typically seen on LAT connections).

- Fixes a wide variety of system panics and other problems caused by random
  memory corruption.

- Fixes a problem when printing to slow printers using DIGITAL UNIX LAT.
  The end of a large file fails to print and no error is reported.

- Allows user control messages to be passed between a STREAMS pty pair.
  This capability was not available in the original released software.

- Applications running System V pseudoterminal slave pty can hang
  forever on open() system call.

- A potential security vulnerability has been discovered, where under certain
  circumstances, a kernel memory fault panic may occur.

- A call to the select() system call may hang or incorrectly indicate that 
  there is a message waiting from a terminal when there is nothing there.

- Fixes a problem in which the system panics with one of the following error 
  messages:

        simple_lock: uninitialized lock

        simple_lock_terminate: lock busy

- Fixes a problem in which the system may panic with the following error 
  message "kernel memory fault".