On Tue, 26 Aug 2008 10:18:56 -0700
"ext Steve Sakoman" <[EMAIL PROTECTED]> wrote:

> > Sounds indeed strange. Can you track is the pcm_file->substream
> > getting zeroed somewhere after it is set in snd_pcm_open_file? Like
> > printing both address of pcm_file and pcm_file->substream.
> 
> I don't believe that it is the SNDRV_PCM_IOCTL_START that writes a
> null in substream, so it is likely something in alsa-lib :-(
> 
One thing came to my mind that does your kernel and user space (E)ABI
match? I rememeber that there were some strange IOCTL related errors
with ALSA mixers if the kernel was compiled with CONFIG_EABI and
CONFIG_OABI_COMPAT but Debian was using legacy ABI.

> It isn't confidence inspiring to see comments like /* AB: FIXME!!!
> This is definitely nonsense */ in snd_pcm_info (the function where it
> finally crashes)
> 
Heh, that's true.


Jarkko
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