Date: Fri, 04 Dec 2009 07:23:34 +0200 From: Andriy Gapon <avg@icyb.net.ua> To: "Moore, Robert" <robert.moore@intel.com> Cc: "freebsd-acpi@freebsd.org" <freebsd-acpi@freebsd.org>, Tarick <tungan@ukr.net> Subject: Re: panic in AcpiExReleaseMutex Message-ID: <4B189CD6.30906@icyb.net.ua> In-Reply-To: <4911F71203A09E4D9981D27F9D8308583E8F26CF@orsmsx503.amr.corp.intel.com> References: <4B178387.4050601@icyb.net.ua> <4911F71203A09E4D9981D27F9D8308583E8F26CF@orsmsx503.amr.corp.intel.com>
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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
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