panic: data storage interrupt trap when building world on PowerMac G5

[Michael Tuexen]

Dear all,

when trying to build world on a G5 with SMP disabled (kern.smp.disabled=1 in
/boot/loader.conf), I get the following panic:

http://bsd14.fh-muenster.de/crash.jpeg

It looks like this happens when memory is getting low (top was running until the
machine panics). The machine runs the kernel from r356950.

Any idea what is going wrong?

Best regards
Michael