kern/45407: extent_alloc_region panic during boot (ohci problem?)

[jmmv%netbsd.org@localhost]

>Number:         45407
>Category:       kern
>Synopsis:       extent_alloc_region panic during boot (ohci problem?)
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Sep 26 22:50:00 +0000 2011
>Originator:     Julio Merino
>Release:        NetBSD 5.99.55
>Organization:
Julio Merino
>Environment:
        
        
System: NetBSD mini.julipedia.org 5.99.55 NetBSD 5.99.55 (MINI) #0: Sun Sep 25 
22:15:05 EDT 2011  
builder%mini.julipedia.org@localhost:/home/builder/obj/usr/src/sys/arch/macppc/compile/MINI
 macppc
Architecture: powerpc
Machine: macppc
>Description:
        A current kernel for macppc built with DEBUG and DIAGNOSTIC crashes
        during boot.  The stack trace does not seem to point to a problem
        specific to macppc, hence why I'm filing this in the kern category
        directly.  The problem seems to be caused by the ohci driver.

        The stack trace is (manually copied; might contain typos):
[...]
ohci0 at pci1 dev 24 function 0: Apple Computer Intrepid USB Controller (rev. 
0x00)
panic: extent_alloc_region: region lies outside extent
Stopped in pid 0.1 (system) at netbsd:cpu_Debugger+0x10: lwz r0, 0x14
(r1)
0x005de810: at panic+0x250
0x005de870: at extent_alloc_region+0x22c
0x005de8a0: at memio_map+0x7c
0x005de8d0: at pci_mapreg_map+0x10c
0x005de920: at ohci_pic_attach+0xa4
0x005dea60: at config_attach_loc+0x1c4
0x005dea90: at pci_probe_device+0x4c0
0x005deb50: at pci_enumerate_bus+0x1cc
0x005debc0: at pcirescan+0x60
0x005debe0: at pciattach+0x204
0x005dec10: at config_attach_loc+0x1c4
0x005dec40: at uninorth_attach+0x2e0
0x005ded70: at config_attach_loc+0x1c4
0x005deda0: at mainbus_attach+0x13c
0x005dee70: at config_ttach_loc+0x1c4
0x005deea0: at cpu_configure+0x20
0x005deeb0: at main+0x23c
0x005def10: at 0x1000a0
>How-To-Repeat:
        Build a macppc kernel with DEBUG and DIAGNOSTIC and attempt to
        boot it unsuccessfully.
>Fix:
        

>Unformatted: