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Date: Tue, 23 Oct 2007 12:17:19 -0600
From: Scott Long <scottl@samsco.org>
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To: Steve Brown <freebsd-questions@stellablue.org>
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Cc: FreeBSD Current <freebsd-current@freebsd.org>
Subject: Re: Panic: mutex Giant not owned cam_xpt.c :4799
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Steve Brown wrote:
> Hey no problem, glad you know it is happening. I was just testing, 
> everything is happy as is on 6.2-R with no changes other than my 
> modified AAC driver.
> 
> No apology required, if anything thank you for all the time you spend on 
> this stuff.
> 
> It will be a while (at least six months) before I need to think about 
> 6.3-R or 7.0-R
> 

The problem really is harmless, it's just a side effect of the SMPng 
work that happened in the SCSI layer for 7.0.  You can avoid it by
removing the 'aacp' driver from your kernel config.  Most people don't
need this driver anyways.

Scott