kern/45748: esiop fails with DEBUG kernels

[martin%NetBSD.org@localhost]

>Number:         45748
>Category:       kern
>Synopsis:       esiop fails with DEBUG kernels
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Dec 27 19:20:00 +0000 2011
>Originator:     Martin Husemann
>Release:        NetBSD 5.99.59
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD sunny-weather.duskware.de 5.99.59 NetBSD 5.99.59 (SUNNY.MP) #59: 
Sat Dec 17 21:41:38 CET 2011 
martin%night-porter.duskware.de@localhost:/usr/src-soc/sys/arch/sparc64/compile/SUNNY.MP
 sparc64
Architecture: sparc64
Machine: sparc64
>Description:

A -current kernel with DEBUG option enabled does not boot on my sparc64
machine:

probe(esiop1:0:11:0): command with tag id -1 reset
esiop1: DMA IRQ: bus fault DMA fifo empty, DSP=0x3c0 DSA=0xfe09e790:  current 
T/L/Q invalid
esiop1: scsi bus reset
probe(esiop1:0:12:0): command with tag id -1 reset
esiop1: DMA IRQ: bus fault DMA fifo empty, DSP=0x3c0 DSA=0xfe09e840:  current 
T/L/Q invalid
esiop1: scsi bus reset
probe(esiop1:0:13:0): command with tag id -1 reset
esiop1: DMA IRQ: bus fault DMA fifo empty, DSP=0x3c0 DSA=0xfe09e8f0:  current 
T/L/Q invalid
esiop1: scsi bus reset
probe(esiop1:0:14:0): command with tag id -1 reset
esiop1: DMA IRQ: bus fault DMA fifo empty, DSP=0x3c0 DSA=0xfe09e9a0:  current 
T/L/Q invalid
esiop1: scsi bus reset
probe(esiop1:0:15:0): command with tag id -1 reset

and then no devices are found.

A kernel from same sources but without DEBUG works fine.

>How-To-Repeat:
Boot a GENERIC.DEBUG kernel on an U60 machine ;-)

>Fix:
n/a