port-i386/39680: panic: i82489_icr_wait: busy

[prlw1%cam.ac.uk@localhost]

>Number:         39680
>Category:       port-i386
>Synopsis:       panic: i82489_icr_wait: busy
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-i386-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Oct 03 10:30:00 +0000 2008
>Originator:     Patrick Welche
>Release:        NetBSD 4.99.72
>Organization:
        
>Environment:
-current/i386 of 3 October 2008
>Description:
fatal breakpoint trap in supervisor mode
trap type 1 code 0 eip c03cc6ac cs 8 eflags 246 cr2 0 ilevel 8
panic: i82489_icr_wait: busy

cpu0: AMD Athlon (686-class), 1800.21 MHz, id 0x681
cpu0: features 383fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR>
cpu0: features 383fbff<PGE,MCA,CMOV,PAT,PSE36,MMX>
cpu0: features 383fbff<FXSR,SSE>
cpu0: features3 c1cbfbff<SCALL/RET,MPC,MXX,3DNOW2,3DNOW>
cpu0: "AMD Sempron(TM) 2200+"
cpu0: I-cache 64KB 64B/line 2-way, D-cache 64KB 64B/line 2-way
cpu0: L2 cache 0MB 64B/line 16-way
cpu0: ITLB 16 4KB entries fully associative, 8 4MB entries fully associative
cpu0: DTLB 32 4KB entries fully associative, 8 4MB entries 4-way
cpu0: Initial APIC ID 0
cpu0: AMD Power Management features: 
cpu0: family 06 model 08 extfamily 00 extmodel 00
>How-To-Repeat:
When I posted in

  http://mail-index.netbsd.org/current-users/2008/07/19/msg003605.html

it was (as the thread shows) hard to see what was the cause. With today's
kernel I get a repeatable panic on boot - a bit easier to reproduce!
>Fix:
Problem is the box is then frozen, so no core dump. It may also be that there
is an earlier panic which disappears off the top of the screen, as the above
lines are repeated.