I upgraded from -current of approximately May 14th to current of July 6th,
and a make in lib will panic the 5000/240 when it gets to libc:

cc -O -DNLS -DYP -DLIBC_SCCS -DSYSLIBC_SCCS -D_REENTRANT -I/usr/src/lib/libc/include -D__DBINTERFACE_PRIVATE -DPOSIX_MISTAKE -DFLOATING_POINT -fPIC -I/usr/src/lib/libc/arch/mips -DPIC -DABICALLS -Werror  -c /usr/src/lib/libc/yp/ypprot_err.c -o ypprot_err.so
building shared object c library

panic: pmap_enter: segmap alloc failed
syncing disks...

The 5000/240 has 48 MB of ram, and 64MB of swap, and is not exceedingly
stressed.

Did I miss something?  I remade config, included the dump spec in the
config file, and removed the swap spec from the config file and added
it to /etc/fstab, installed a new kernel, upgraded compile_et and
make_cmds, did a make build (which did the make install in mk and make
includes), which then died in libc.

Doing a make in /usr/src/lib/libc consistently repeats this problem,
even after doing a make clean.

If any further information on the machine would be useful, I'll be
happy to provide it.

dmesg output follows:
NetBSD 1.2G (FRED) #4: Mon Jul  7 23:45:37 CDT 1997
    root@fred.cnde.iastate.edu:/usr/src/sys/arch/pmax/compile/FRED
real mem = 50331648
avail mem = 42610688
using 1228 buffers containing 5029888 bytes of memory
mainbus0 (root)
cpu0 at mainbus0: MIPS R3000 CPU Rev. 3.0 with MIPS R3010 FPC Rev. 4.0
        L1 cache: 64kb Instruction, 64kb Data.
tc0 at mainbus0: 25 MHz clock
asic0 at tc0 slot 3 offset 0x0
le0 at asic0 offset 0xc0000 priority 4: address 08:00:2b:1a:ff:b4
le0: 32 receive buffers, 8 transmit buffers
scc0 at asic0 offset 0x100000 priority 6
scc1 at asic0 offset 0x180000 priority 5
clock0 at asic0 offset 0x200000 priority 0: mc146818 or compatible
asc0 at asic0 offset 0x300000 priority 3: target 7
cfb0 at tc0 slot 0 offset 0x0 (1024x864x8) (console)
Beginning old-style SCSI device autoconfiguration
rz0 at asc0 drive 0 slave 0 DEC RZ58     (C) DEC rev 2000, 2698061 512 byte blocks
rz2 at asc0 drive 2 slave 0 DEC RZ57     (C) DEC rev 5000, 1954050 512 byte blocks
boot device: rz0
root on rz0a dumps on rz0b


Tracy J. Di Marco White           gendalia@iastate.edu