PROBLEM: (81399) (PATCH ID: OSF510-020)
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A system panic occurs on bootup when a large number of devices (greater than 
255) are connected to the system.  This panic occurs when smsd (the system 
management daemon) starts up, shortly after entering multi-user mode.

The panic may look like the following:

simple_lock: time limit exceeded

   pc of caller:         0xfffffc00004ddea0
   lock address:         0xfffffc000085b380
   lock info addr:       0xfffffc000087b7b0
   lock class name:      kernel_pmap.lock
   current lock state:   0xc4000179004e0aad (cpu=?,pc=0xfffffc00004e0aac,busy)

panic (cpu 0): simple_lock: time limit exceeded