DragonFlyBSD

The attached test program, when ran with a high argument (100000 or more) causes
this panic.

(gdb) bt
#0 Debugger (msg=0xc056c357 "panic") at ../../platform/pc32/i386/db_interface.c:335
#1 0xc02f455a in panic (fmt=0xc05b8ea8 "vm_map_entry_link: dup addr map %p ent
%p") at ../../kern/kern_shutdown.c:798
#2 0xc04870c0 in _vm_map_clip_end (map=0xc204a1d0, entry=0xd36e6bc0, end=4096,
countp=0xd2baba6c) at ../../vm/vm_map.c:695
#3 0xc0487f57 in vm_map_stack (map=0xc204a1d0, addrbos=4294049792,
max_ssize=1052672, prot=7 '\a', max=7 '\a', cow=0) at ../../vm/vm_map.c:3064
#4 0xc0489bda in vm_mmap (map=0xc204a1d0, addr=0xd2babc88, size=1052672, prot=7
'\a', maxprot=7 '\a', flags=<value optimized out>, handle=0x0, foff=0) at
../../vm/vm_mmap.c:1106
#5 0xc048a231 in kern_mmap (vms=0xc204a1d0, uaddr=0xfff20000<error reading
variable>, ulen=1052672, uprot=<value optimized out>, uflags=1024, fd=-1,
upos=0, res=0xd2babcf0)
at ../../vm/vm_mmap.c:404
#6 0xc048a2aa in sys_mmap (uap=0xd2babcf0) at ../../vm/vm_mmap.c:419
#7 0xc05036f1 in syscall2 (frame=0xd2babd40) at
../../platform/pc32/i386/trap.c:1357
#8 0xc04f2aa6 in Xint0x80_syscall () at ../../platform/pc32/i386/exception.s:876
#9 0xd2babd40 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)