amd64 panic snd_hda - hdac_get_capabilities: Invalid corb size (0)

[Gavin Atkinson]

On Mon, 2010-07-26 at 14:24 +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)

Can you give us this output please?  At least the "panic()" line and the
next six or so lines?

Thanks,

Gavin

-- 
Gavin Atkinson
FreeBSD committer and bugmeister