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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
    anything?


    thanks,

    Takashi
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