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Re: 'Ghost' vr0 causes panic

On Wed, 7 Jan 2009, Jonathan A. Kollasch wrote:
On Wed, Jan 07, 2009 at 12:04:02PM +0000, Stephen Borrill wrote:
There's a revision of motherboard we use in our products that has a
'ghost' vr0 on it. I guess some but not all of the supporting logic is
wired. It shows up on the BIOS post and in NetBSD 4 and earlier, vr0
partly attaches but has a mac address of 00:00:00:00:00:00. With NetBSD
5, it panics at boot time:

vr0 at pci0 dev 18 function 0: VIA VT6102 (Rhine II) 10/100 Ethernet
panic: mpacpi_findintr_linkdev: irq mismatch
fatal breakpoint trap in supervisor mode
trap type 1 code 0 eip c053402c cs 8 eflags 246 cr2 0 ilevel 8
Stopped in pid 0.1 (system) at  netbsd:breakpoint+0x4:  popl    %ebp

This is sounds something like kern/38540, but it could be different.

Sounds very much like it.

I've removed the panic and replaced it by a diagnostic message (as suggested by Christos), so see whether that helps.

cvs rdiff -r1.73 -r1.74 src/sys/arch/x86/x86/mpacpi.c


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