When booting with a Sun dual SCSI card in my Ultra 10, I get this

	siop0 at pci1 dev 1 function 0: Symbios Logic 53c875 (ultra-wide scsi)
	siop0: using on-board RAM
	siop0: interrupting at ivec 10
	data error type 32 sfsr=80881 sfva=ffffff6ffdffdfff afsr=84000000 
afva=1ff00002000 tf=0x1c08780
	data fault: pc=104c59c addr=ffffff6ffdffdfff sfsr=80881<ASI=8,ASI,E>
	kernel trap 32: data access error
	Stopped in pid 0 (swapper) at   siop_attach+0x2d8:      srl             %o0, 
0x0, %o0

Any ideas anybody? This is with a kernel I built this afternoon from the 
morning's sources.

Cheers,
Lloyd