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Date: Mon, 26 Jul 2010 17:07:32 +0100
From: Anton Shterenlikht <mexas@bristol.ac.uk>
To: Anton Shterenlikht <mexas@bristol.ac.uk>
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Cc: freebsd-current@freebsd.org
Subject: Re: amd64 panic snd_hda - hdac_get_capabilities: Invalid corb size
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On Mon, Jul 26, 2010 at 02:24:52PM +0100, Anton Shterenlikht wrote:
> On amd64 r210496 I get this panic when booting a kernel
> with snd_hda(4). I haven't used this driver before, so
> can't say if this is a regression.
> 
> (copied by hand)
> 
> hdac0: <ATI SB600 High Definition Audion Controller> irq 16 at device 20.2 on pci0
> hdac0: HDA Driver Revision: 20100226_0142
> hdac0: [ITHREAD]
> hdac0: hdac_get_capabilities: Invalid corb size (0)
> device_attach: hdac0 attach returned 6
> Slab at 0xffffff000261eb18, freei 3 = 0
> panic: Duplicate free of item 0xffffff0002661c00 from zone 0xffffff00b7f9a500(1024)
> 
> cpuid = 0
> KDB: enter: panic
> [ thread pid 0 tid 100000 ]
> Stopped at kdb_enter+0x3d: movq      $0,0x74f360(%rip)
> db>bt
> 
> (very long output.. ending in)
> 
> mi_startup() at mi_startup_0x59
> btext() at btext+0x2c

I moved back as far as r204000, still the same panic.

Please advise

many thanks
anton

-- 
Anton Shterenlikht
Room 2.6, Queen's Building
Mech Eng Dept
Bristol University
University Walk, Bristol BS8 1TR, UK
Tel: +44 (0)117 331 5944
Fax: +44 (0)117 929 4423