Garbled shutdown message

[Michael Butler]

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Kris Kennaway wrote:
> Jens Schweikhardt wrote:
>> If you look at this closely you can find "Syncing (max 60 seconds) for
>> system process" if you read about every other character. It's always the
>> third of the three "Waiting" lines. Anyone else seeing this?
> 
> You have an SMP system and do not have the PRINTF_BUFR option or
> whatever it is.  Without it multiple CPUs have no synchronization
> between printfs and will interleave.

So the recommended value for PRINTF_BUFR_SIZE is ... ?

In my (very brief) browse through kern/subr_prf.c, I didn't see any
overflow protection on the stack-allocated buffer ... which makes me
rather nervous.

Interleaved text is *way* better than clobbered kernel stack ..

	Michael
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