From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Takashi Iwai <tiwai@suse.de>
Cc: Linux Kernel list <linux-kernel@vger.kernel.org>
Subject: Re: [BUG] 2.6.10-rc3 snd-powermac crash
Date: Mon, 20 Dec 2004 17:36:36 +0100 [thread overview]
Message-ID: <1103560596.9065.10.camel@gaston> (raw)
In-Reply-To: <s5hr7lluei7.wl@alsa2.suse.de>
On Mon, 2004-12-20 at 17:21 +0100, Takashi Iwai wrote:
> 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?
No, it's not something that happens during normal playback, but
occasionally when tweaking the volume ... I suspect a fast
open/ioctl/close sequence or something like that... weird.
> > 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?
Ok.
Ben.
next prev parent reply other threads:[~2004-12-20 16:36 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
2004-12-20 16:36 ` Benjamin Herrenschmidt [this message]
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1103560596.9065.10.camel@gaston \
--to=benh@kernel.crashing.org \
--cc=linux-kernel@vger.kernel.org \
--cc=tiwai@suse.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.