es1938 kernel panic - buffer overrun on recording

es1938 kernel panic - buffer overrun on recording

[Kacper Wysocki]

Hi,
I'm running linux 2.6.16.5 and have a esssolo1 soundcard built into my
IBM Thinkpad 240. Anytime I try to record from the soundcard I get the
following message on the console:

kernel panic - not syncing: Buffer above 16M boundry

This is reproducible with for example 'sound-recorder foo.wav' or any
other program that reads from the soundcard.

I would be happy to debug it further, but I would need some pointers
as to what to do, as I couldn't find a debug mode for the alsa es1938
kernel driver.

Regards,
 -Kacper

Re: es1938 kernel panic - buffer overrun on recording

[Lee Revell]

On Tue, 2006-06-06 at 17:01 -0400, Kacper Wysocki wrote:
> Hi,
> I'm running linux 2.6.16.5 and have a esssolo1 soundcard built into my
> IBM Thinkpad 240. Anytime I try to record from the soundcard I get the
> following message on the console:
> 
> kernel panic - not syncing: Buffer above 16M boundry
> 
> This is reproducible with for example 'sound-recorder foo.wav' or any
> other program that reads from the soundcard.
> 
> I would be happy to debug it further, but I would need some pointers
> as to what to do, as I couldn't find a debug mode for the alsa es1938
> kernel driver.

Can you post the full kernel panic output?

Lee

Re: es1938 kernel panic - buffer overrun on recording

[Kacper Wysocki]

2006/6/8, Kacper Wysocki <kacperw@gmail.com>:
> 2006/6/7, Lee Revell <rlrevell@joe-job.com>:
> > On Tue, 2006-06-06 at 17:01 -0400, Kacper Wysocki wrote:
> > > Hi,
> > > I'm running linux 2.6.16.5 and have a esssolo1 soundcard built into my
> > > IBM Thinkpad 240. Anytime I try to record from the soundcard I get the
> > > following message on the console:
> > >
> > > kernel panic - not syncing: Buffer above 16M boundry
> > >
> > > This is reproducible with for example 'sound-recorder foo.wav' or any
> > > other program that reads from the soundcard.
> > >
> > > I would be happy to debug it further, but I would need some pointers
> > > as to what to do, as I couldn't find a debug mode for the alsa es1938
> > > kernel driver.
> >
> > Can you post the full kernel panic output?
>
> That is the full panic output. I've tried getting a stack trace for
> running processes with the magic sysreq key but lacking a serial
> console setup I haven't succeeded in capturing any relevant output.
>
> I'll try 2.6.16.20 with kernel symbols, soft kernel hang detection,
> alsa debugging and verbosity compiled in next.
>
> Any other suggestions for debugging this would be appreciated.

I have now tried the 2.6.16.20 kernel as above, but still only get the
kernel panic one-liner. How do I get a full kernel panic?

 -Kacper

Re: es1938 kernel panic - buffer overrun on recording

[Takashi Iwai]

At Thu, 8 Jun 2006 12:53:09 -0400,
Kacper Wysocki wrote:
> 
> 2006/6/8, Kacper Wysocki <kacperw@gmail.com>:
> > 2006/6/7, Lee Revell <rlrevell@joe-job.com>:
> > > On Tue, 2006-06-06 at 17:01 -0400, Kacper Wysocki wrote:
> > > > Hi,
> > > > I'm running linux 2.6.16.5 and have a esssolo1 soundcard built into my
> > > > IBM Thinkpad 240. Anytime I try to record from the soundcard I get the
> > > > following message on the console:
> > > >
> > > > kernel panic - not syncing: Buffer above 16M boundry
> > > >
> > > > This is reproducible with for example 'sound-recorder foo.wav' or any
> > > > other program that reads from the soundcard.
> > > >
> > > > I would be happy to debug it further, but I would need some pointers
> > > > as to what to do, as I couldn't find a debug mode for the alsa es1938
> > > > kernel driver.
> > >
> > > Can you post the full kernel panic output?
> >
> > That is the full panic output. I've tried getting a stack trace for
> > running processes with the magic sysreq key but lacking a serial
> > console setup I haven't succeeded in capturing any relevant output.
> >
> > I'll try 2.6.16.20 with kernel symbols, soft kernel hang detection,
> > alsa debugging and verbosity compiled in next.
> >
> > Any other suggestions for debugging this would be appreciated.
> 
> I have now tried the 2.6.16.20 kernel as above, but still only get the
> kernel panic one-liner. How do I get a full kernel panic?

The error message comes from OSS essolo1 driver...


Takashi

Re: es1938 kernel panic - buffer overrun on recording

[Kacper Wysocki]

2006/6/8, Takashi Iwai <tiwai@suse.de>:
> At Thu, 8 Jun 2006 12:53:09 -0400,
> Kacper Wysocki wrote:
> >
> > 2006/6/8, Kacper Wysocki <kacperw@gmail.com>:
> > > 2006/6/7, Lee Revell <rlrevell@joe-job.com>:
> > > > On Tue, 2006-06-06 at 17:01 -0400, Kacper Wysocki wrote:
> > > > > I'm running linux 2.6.16.5 and have a esssolo1 soundcard built into my
> > > > > IBM Thinkpad 240. Anytime I try to record from the soundcard I get the
> > > > > following message on the console:
> > > > >
> > > > > kernel panic - not syncing: Buffer above 16M boundry
> > > > >
> > > > > This is reproducible with for example 'sound-recorder foo.wav' [snip]
> The error message comes from OSS essolo1 driver...

Wow. I failed to notice that my system was loading the oss driver
alongside the alsa driver. Thanks for spotting this for me. Sorry for
the noise.

-Kacper