>Number:         28665
>Category:       port-i386
>Synopsis:       system drops to debugger when connecting via serial
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    port-i386-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Dec 15 04:58:00 +0000 2004
>Originator:     chuey
>Release:        NetBSD 2.0
>Organization:
>Environment:
System: NetBSD gateway.happy.chu 2.0 NetBSD 2.0 (GENERIC) #0: Wed Dec 1 10:58:25
 UTC 2004 builds@build:/big/builds/ab/netbsd-2-0-RELEASE/i386/200411300000Z-obj/
big/builds/ab/netbsd-2-0-RELEASE/src/sys/arch/i386/compile/GENERIC i386         
Architecture: i386                                                              
Machine: i386   
>Description:
The system drops to debugger mode when I connect via serial console.  Here is the trace:                                                                
                                                                                
cpu_Debugger(0,c0896e7c,c0896e50,c0355b45,c0974d00) at netbsd:cpu_Debugger+0x4  
comintr(c0973600,0,8cbd0010,30,be30010) at netbsd:comintr+0x68a                 
Xintr_legacy4() at netbsd:Xintr_legacy4+0xa4                                    
--- interrupt ---                                                               
cpu_switch(c07c97e0,0,c0896f48,c036f8ee,1) at netbsd:cpu_switch+0x9f            
ltsleep(c07c9640,4,c06e83dc,0,0) at netbsd:ltsleep+0x323                        
uvm_scheduler(c07c9620,0,c07d619c,c06cd1f8,0) at netbsd:uvm_scheduler+0x74      
main(0,0,0,0,0) at netbsd:main+0x683                                            
                                                                                
dump and dmesg can be found here:  http://chu.sexykula.com/nbsd/        
>How-To-Repeat:
Connect to system via serial console (minicom).
>Fix: