I've got a dual G4 that I'm trying to bring up to -current, and "make
build" is causing it to crash after a while (~15 minutes or so) with
panic: kernel diagnostic assertion "rv" failed: file
"../../../../uvm/uvm_pager_i.h", line 64

Stopped in pid 8 (aiodoned) at  cpu_Debugger+0x10:   lwz r0, r1, 0x14,

The keyboard is nonfunctional at that point, so I can't get a stack
trace. The kernel I'm running is:

NetBSD greyfox.azeotrope.org 1.5Y NetBSD 1.5Y (GREYFOX) #23: Fri Oct  5
00:36:24 CDT 2001
root@greyfox.azeotrope.org:/usr/src.local/sys/arch/macppc/compile/GREYFOX
macppc