Re: Kernel OOP with alsaplayer driver

[Takashi Iwai <tiwai@suse.de>]

Hi,

At Tue, 20 Aug 2002 13:06:44 +0200,
Andy Lo-A-Foe wrote:
> 
> Hi,
> 
> We've been experiencing kernel OOPSes with the alsaplayer alsa-final
> output plugin. The problems appeared in the 0.9.0rc3 release and
> forward. The same code works fine on 0.9.0rc1. The OOP is triggered at
> close time (snd_pcm_close()) and only then. This behaviour was
> duplicated on at least 2 systems with different soundcards, each time
> with alsaplayer 0.99.71 and alsa 0.9.0rc3 ...
> 
> I just noticed that the OOPS doesn't happen if I call snd_pcm_drain() just
> before snd_pcm_close(). It makes sense, but the OOPS should never happen
> right?
 
could you check via strace which ioctl triggers this?
strangely i cannot reproduce this on my machine.

i guess it's the same problem reported by Benny, the data is
transferred even after hw_free call (in snd_pcm_close).


thanks,

Takashi


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