>Number:         7659
>Category:       port-i386
>Synopsis:       FreeBSD 4 threading emulation can hang or panic -current
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    port-i386-maintainer (NetBSD/i386 Portmaster)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu May 27 23:50:01 1999
>Last-Modified:
>Originator:     Matthew Orgass <darkstar@pgh.net>
>Organization:
	
>Release:        1.4C 1999/05/27
>Environment:
	
System: NetBSD me 1.4C NetBSD 1.4C (ME) #1: Thu May 27 07:44:14 EDT 1999 root@me:/usr/src/sys/arch/i386/compile/ME i386


>Description:
  The FreeBSD 4 thread emulation can hang or panic ("locking against
myself") 1.4C.  It worked in 1.4.

>How-To-Repeat:
  Run the rc5des-freebsd4-elf-mt client with the script included in the
rc5des package.  The process hangs with a wchan thrd_s and status D.  Then
run the client with an illegal option.  This displays the usage then 
produces a "locking against myself" panic.  Examination of the core shows
that the process died with wchan - status SE+.

  To hang the system, run the client with no options (with no hung
clients).  This displays the configuration screen then hangs the system
(can't even break into the debugger).  

>Fix:
  Unknown.
>Audit-Trail:
>Unformatted: