panic in AcpiExReleaseMutex

[Moore, Robert]

It would appear that a GPE is taken, for the EC device, thus invoking EcGpeQueryHandler. In what context is _Q20 or _Q09 executed?

This might be an important question: What is the thread_id of this initial thread?



>-----Original Message-----
>From: Andriy Gapon [mailto:avg at icyb.net.ua]
>Sent: Friday, December 04, 2009 12:50 PM
>To: Moore, Robert
>Cc: freebsd-acpi at freebsd.org; Tarick
>Subject: Re: panic in AcpiExReleaseMutex
>
>on 04/12/2009 20:45 Moore, Robert said the following:
>> Yes, you are correct. I did not have the code in front of me at the time.
>>
>> When AcpiExReleaseMutex is called, apparently the mutex is in fact held,
>> otherwise the function would have aborted immediately.
>>
>> When the mutex is held, the Thread->AcquiredMutexList is expected to hold
>(at
>> the minimum) the mutex object being released. Something is very wrong if
>this
>> list is NULL when releasing the mutex.
>>
>> Just to make sure: All of this is happening in the same thread?
>
>Yes, this happens when there is only the initial thread running on BSP, no
>other
>threads are started yet.
>
>
>--
>Andriy Gapon