When I try to launch the latest milter-greylist from pkgsrc on a NetBSD 
3.1 VAXstation 4000/60, I get a panic. Anyone know how to fix this?

panic: Segv in kernel mode: pc %x addr %x
Stack traceback :
0x89e2eb4c: trap+0x231(0x89e2ec18)
0x89e2ec18: trap type=0x8c code=0x89f69f98 pc=0x8012fef0 psl=0xdf0008
0x89e2ebe4: cpu_setfunc+0x1e(0x8539bdac,0x800bf7fc,0x83d96010)
0x89e2ec64: sa_switch+0xed(0x8539b7dc,0x83d96010,0x2)
0x89e2eca8: ltsleep+0x184(0x831ec3f8,0x11,0x801529c0,0,0x831ec400)
0x89e2ece8: biowait+0x29(0x831ec3f8)
0x89e2ed2c: uvm_swap_io+0x176(0x89e2edc0,0xb34,0x1,0x100000)
0x89e2ed64: uvm_swap_get+0x3d(0x803a1944,0xb34,0x2)
0x89e2eda4: 
uao_get+0x1b8(0x86602000,0,0,0x89e2ee58,0x89e2ee5c,0,0x1,0x1,0x2)
0x89e2edd8: uvm_fault+0x956(0x80c18c48,0x7f7ff000,0,0x1)
0x89e2eefc: trap+0x1f3(0x89e2efb4)
db> sync
syncing disks... Trap: type 2, code 0, pc 80000486, psl 4080000
panic: trap
Stopped in pid 29937.1 (milter-greylist) at     netbsd:trap+0x177: 
pushab s
csipi_nsyncparams+0x7e89