This is a DEBUG+DIAGNOSTIC+LOCKDEBUG kernel on mac68k, sources from ~9 hours
ago:

init: copying out path `/sbin/init' 11   
                                      
pool_get(PR_WAITOK) with held simple_lock 0x4f34f78 CPU 0 ../../../../uvm/uvm_fault.c:888
?(?)     
simple_lock_only_held(0,18b9c8) at 0
assert_sleepable(0) + 26            
pool_get(1ce7d4,2) + d2 
uvm_mapent_alloc(1d4af8,0,1,0,0) + 3c
uvm_map(1d4af8,594abd0,400000,0,ffffffff,ffffffff,0,1801727) + 52
uvm_km_alloc(1d4af8,400000,0,1000004,0) + 7c                     
pmap_enter(4f2bf78,ffffc000,2970000,7,22) + 4a6
uvm_fault_internal(4f2adc0,ffffc000,2,0) + 1b62
trap(8,4a1,ffffcff5) + 5a0                     
copyout(4f2cf18) + 36     
proc_trampoline() + 2

Did somebody, by chance, already fix this?

Martin