Date: Tue, 4 Dec 2012 09:50:00 +0100 From: Stefan Farfeleder <stefanf@FreeBSD.org> To: Andriy Gapon <avg@FreeBSD.org> Cc: freebsd-acpi@FreeBSD.org Subject: Re: ACPI panic Message-ID: <20121204085000.GA1445@mole.fafoe.narf.at> In-Reply-To: <50B7D717.4030402@FreeBSD.org> References: <20121125140008.GA1497@mole.fafoe.narf.at> <50B244A1.1040800@FreeBSD.org> <20121126091101.GA1469@mole.fafoe.narf.at> <50B33693.2060000@FreeBSD.org> <20121126093704.GB1469@mole.fafoe.narf.at> <50B34484.1090807@FreeBSD.org> <20121126104737.GC1469@mole.fafoe.narf.at> <50B34EEA.4000209@FreeBSD.org> <20121129084627.GA1450@mole.fafoe.narf.at> <50B7D717.4030402@FreeBSD.org>
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On Thu, Nov 29, 2012 at 11:43:51PM +0200, Andriy Gapon wrote:
> Hmmm...
> Another bug-catching patch before I start questioning my ability to understand
> the code.
>
> index 59ecf21..1687c75b 100644
> --- a/sys/contrib/dev/acpica/components/utilities/utcache.c
> +++ b/sys/contrib/dev/acpica/components/utilities/utcache.c
> @@ -238,6 +238,8 @@ AcpiOsReleaseObject (
>
> else
> {
> + if (AcpiGbl_MutexInfo[ACPI_MTX_CACHES].ThreadId == AcpiOsGetThreadId ())
> + panic("ACPI_MTX_CACHES acquired recursively");
> Status = AcpiUtAcquireMutex (ACPI_MTX_CACHES);
> if (ACPI_FAILURE (Status))
> {
> @@ -311,6 +313,8 @@ AcpiOsAcquireObject (
> return (NULL);
> }
>
> + if (AcpiGbl_MutexInfo[ACPI_MTX_CACHES].ThreadId == AcpiOsGetThreadId ())
> + panic("ACPI_MTX_CACHES acquired recursively");
> Status = AcpiUtAcquireMutex (ACPI_MTX_CACHES);
> if (ACPI_FAILURE (Status))
> {
These checks have not triggered additional panics. I still get the cycle
one.
Stefan
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