Re: NetBSD 6.0 BETA kernel crash on amd64 (triggered by hdaudioctl)

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Sun, Mar 11, 2012 at 03:28:01PM +0100, Peter Bex wrote:
> Hi all,
> 
> Yesterday I built a GENERIC amd64 kernel from the netbsd-6 branch.
> So far it runs perfectly, except for one glitch.  When I run hdaudioctl
> to set a new config, I get a kernel crash, even if that config is the
> same as is already active.  This is on a MacBook(4,1) from 2008.
> The following commands reliably reproduce the crash:
> 
> $ hdaudioctl get 0x00 0x01 > foo
> $ hdaudioctl set 0x00 0x01 foo
> 
> Unfortunately, there are two problems that prevent me from investigating
> this deeper: the kernel crashdump that savecore puts on my disk can't
> be opened with gdb (it says "invalid address" when I run
> "target kvm netbsd.0.core") and my keyboard is unresponsive
> under ddb.
> 
> With some help I did manage to get some information from the crash by
> setting ddb.commandonenter=bt and manually transcribing the screen
> while it was writing the kernel dump.  Here it is:
> [...]

please send-pr this

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--