kernel panic with pmap_qremove()

[Anton Barsukov]

Hi everybody

I install ports/benchmarks/forkbomb,
when i run '%forkbomb -f', kernel panic.

instruction pointer = pmap_qremove(sva=4290785280, count=0) at /usr/src/sys/i386/i386/pmap.c:896

FreeBSD 6.0-RELEASE(GENERIC)  i386
machine( MB -- P4P800SE,
	  CPU -- P4 3GHz,
	  RAM -- 2x512Mb )