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From: Takashi Iwai <tiwai@suse.de>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Linux Kernel list <linux-kernel@vger.kernel.org>
Subject: Re: [BUG] 2.6.10-rc3 snd-powermac crash
Date: Mon, 20 Dec 2004 17:21:36 +0100	[thread overview]
Message-ID: <s5hr7lluei7.wl@alsa2.suse.de> (raw)
In-Reply-To: <1103391238.5775.0.camel@gaston>

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

  reply	other threads:[~2004-12-20 16:21 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-12-18 17:07 [BUG] 2.6.10-rc3 snd-powermac crash Benjamin Herrenschmidt
2004-12-18 17:33 ` Benjamin Herrenschmidt
2004-12-20 16:21   ` Takashi Iwai [this message]
2004-12-20 16:36     ` Benjamin Herrenschmidt
2004-12-20 16:55     ` Benjamin Herrenschmidt
2004-12-20 18:30       ` Takashi Iwai
2004-12-21  6:43       ` marvin24
2004-12-21  7:53 ` Soeren Sonnenburg
2004-12-31 15:23   ` Andreas Schwab
2005-01-05 20:06     ` Soeren Sonnenburg
2005-01-07 12:00     ` Takashi Iwai
2005-01-07 13:00       ` Soeren Sonnenburg
2005-01-07 13:30       ` Andreas Schwab

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