On Fri, May 25, 2018 at 12:19:29PM -0700, Jason Thorpe wrote:
> I don?t think that?s what?s happening here? from the machine check logout
> frame that Ross Harvey so kindly decoded in the 21272 Core Logic driver, it
> looks like a bogus bus_space_read_something to a PCI memory region is
> happening (it?s a Target Abort on a PCI memory read ? it?s been a while, but
> I think I?m interpreting that right?)
>
> 32-bit PCI address: address = 0x38d67870, 0x0<No DAC>
>
> It would be instructive to see what PCI device has a memory BAR that covers
> that address.
>
> If there isn?t one, then I suspect we?re looking at a memory stomper.
This was on my usual test machine, full dmesg is here:
http://www.netbsd.org/~martin/alpha-atf/dmesg.txt
I can check pcictl details later.
Martin
