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

On 07/27/10 18:09, Anton Shterenlikht wrote:
> On Tue, Jul 27, 2010 at 05:37:49PM +1000, Lawrence Stewart wrote:
>> On 07/27/10 02:07, Anton Shterenlikht wrote:
>>> 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
>>
>> I get this same panic on my Toshiba Portege R600 laptop when I boot it
>> into Windows and then reboot it into FreeBSD. My guess is that the
>> Windows drivers leave the hardware in a state which the FreeBSD code
>> doesn't know how to deal with. I don't run Windows often so haven't hit
>> this panic in a while, but the trick that always worked for me was to go
>> into the BIOS and "Reset to defaults", then boot into FreeBSD.
> 
> no, that doesn't help, still the same panic
> 
> Also, I've only FBSD installed on this laptop (HP Compaq 6715s),
> no other OS.

hmm I'll have to try the patch and see if it resolves the issue for me.
I guess in my case resetting the BIOS was causing a different code path
to be taken and thus the panic never triggered. Good to here it's
resovled for you though.

Cheers,
Lawrence