> > Is anyone working on fixes for the recently intorduced UVM RB tree allocator?
> > Currently, it doesn't try hard enough to honour the address hint passed to
> > mmap calls, which breaks sbrk().
> 
> could anyone please check if uvm_map.c rev.1.149 changes the situation?
> thanks.

It changes... as follows:

root file system type: ffs
init: copying out path `/sbin/init' 11
panic: kernel diagnostic assertion "hint <= tmp->end" failed: file "../../../../uvm/uvm_map.c", line 1576
Stopped in pid 1.1 (init)

-pk