>Number:         18227
>Category:       kern
>Synopsis:       crash when network cable unplugged
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Sep 07 16:45:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     
>Release:        NetBSD 1.5.3
>Organization:
	
>Environment:
	
	
System: NetBSD alpha300.gggeb.net 1.5.3 NetBSD 1.5.3 (ALPHA-$Revision: 1.127.2.5 $) #3: Wed Aug 28 11:22:36 CDT 2002 root@alpha300.gggeb.net:/usr/src/sys/arch/alpha/compile/ALPHA alpha
Architecture: alpha
Machine: alpha
>Description:
	If I unplug the network cable the machine instantly crashes.

here is the gdb output :

(gdb) target kcore netbsd.0.core
panic: lockmgr: no context
#0  0xfffffc00006e31d8 in dumpsys ()
(gdb) bt
#0  0xfffffc00006e31d8 in dumpsys ()
#1  0xfffffc00006e2dcc in cpu_reboot ()
#2  0xfffffc00003faed4 in panic ()
#3  0xfffffc00003e4c4c in lockmgr ()
#4  0xfffffc00005d2de4 in uvm_fault ()
#5  0xfffffc00006ed1b4 in trap ()
#6  0xfffffc0000300414 in XentMM ()
#7  0xfffffc000064eb40 in tulip_reset ()
can not access 0xffffffff, invalid translation (invalid L1 PTE)
can not access 0xffffffff, invalid translation (invalid L1 PTE)
Cannot access memory at address 0xffffffffffffffff.
(gdb) quit
	
>How-To-Repeat:
	It is consistant, just pull the network cable out.
	
>Fix:
	
>Release-Note:
>Audit-Trail:
>Unformatted: