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Date: Fri, 04 Dec 2009 07:23:34 +0200
From: Andriy Gapon <avg@icyb.net.ua>
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To: "Moore, Robert" <robert.moore@intel.com>
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Cc: "freebsd-acpi@freebsd.org" <freebsd-acpi@freebsd.org>,
	Tarick <tungan@ukr.net>
Subject: Re: panic in AcpiExReleaseMutex
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on 04/12/2009 06:57 Moore, Robert said the following:
>> I am somewhat suspicious of recursive use of \_SB.PCI0.LPC0.EC0.MUT1
> 
> It is OK for AML code to acquire a mutex multiple times, so I don't think that is the problem.
> 
>>    PreviousSyncLevel =
>>        WalkState->Thread->AcquiredMutexList->Mutex.OriginalSyncLevel;
> 
> Multiple pointers here, do you know which one is null?
> 

It must be AcquiredMutexList, because WalkState->Thread is checked for NULL a
few lines above.


-- 
Andriy Gapon