netstat segv in current/amd64

[Gary Duzan <gary%duzan.org@localhost>]

   After a recent upgrade of current (full upgrade via installer),
running netstat with no arguments results in a segmentation fault.
If I run with "-f inet" or "-f inet6", I get reasonable looking
results, then the segmentation fault. From the ktrace it looks like
it is reading through /dev/kmem just before the crash, and gdb (on
a standard non-debug binary) shows the following:

###########################################################################
brain { ~ } # gdb `which netstat`                                               
                                              
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This GDB was configured as "x86_64--netbsd"...(no debugging symbols found)

(gdb) run -f inet
Starting program: /usr/bin/netstat -f inet
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)

Program received signal SIGSEGV, Segmentation fault.
0x0000000000408ca3 in print_vtw_v4 ()
(gdb) where
#0  0x0000000000408ca3 in print_vtw_v4 ()
#1  0x0000000000414753 in process_vtw ()
#2  0x0000000000414c9c in show_vtw_v4 ()
#3  0x00000000004093d0 in protopr ()
#4  0x00000000004106b0 in main ()
(gdb) 
###########################################################################

   In other tests I've had gdb hang while trying to debug netstat,
and I was a bit surprised to get this stack trace.

   Has anyone else seen this? Thanks.

                                        Gary Duzan