[alsa-devel] OOPS: Vmaster not freed on reconfig
tiwai at suse.de
Tue Nov 8 17:48:06 CET 2011
At Tue, 08 Nov 2011 17:36:02 +0100,
Takashi Iwai wrote:
> At Tue, 08 Nov 2011 17:16:56 +0100,
> David Henningsson wrote:
> > Hi,
> > I'm playing around with the reconfig functions of snd-hda-codec and got
> > an OOPS in slave_put. I tried to research this, and I think I've nailed
> > down the problem: the vmaster is not freed on reconfig (presumably, it
> > should be fixed in hda_codec.c:snd_hda_ctls_clear).
> Hmm, I don't figure out how it happens.
> The vmaster is added to the list via snd_hda_add_vmaster() by calling
> > I'm a little unsure of whether the best thing is to just add it to
> > codec.mixers, keep them in a separate array, or something else. What do
> > you think?
> > (It's on 3.0, it's a sigmatel/IDT, and I've got the screen captured by a
> > camera if anyone is interested.)
> Yes, it'd be interesting. If the bug is easily reproducible, you can
> capture the oops text by netconsole, too.
Also, please give alsa-info.sh output (or equivalent) that triggers
the problem. I'll try to debug with hda-emu at first.
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