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SubjectRe: [BUG] 2.6.10-rc3 snd-powermac crash
At Sat, 18 Dec 2004 18:33:58 +0100,
Benjamin Herrenschmidt wrote:
> On Sat, 2004-12-18 at 18:07 +0100, Benjamin Herrenschmidt wrote:
> > Hi Takashi !
> >
> > I get that regulary with latest kernel when using Alsa. Can't tell if it's new
> > as I used dmasound so far, just wanted to give Alsa a try...
> It seems to be related to oss emulation I'd say ... it's triggered by
> gtkpbbuttons volume control keys, which will open/ioctl/write/close the
> device very quicky (changing volume & outputing a beep)

So, it's not reproducible when you do playback normally?
Can you get /proc/asound/card0/pcm0p/sub0/hw_params during playback?

> Maybe a race ? This is a laptop, so UP, no PREEMPT.

Well, the volume and PCM shouldn't be racy. I'd first suspect another
bug in PCM OSS emulation code...

Could you compile with CONFIG_SND_DEBUG=y and see whether it catches


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