[backtrace] (snd_solo) mtx_lock_sleep: recursed on non-recursive mutex

[Ariff Abdullah]

On Thu, 1 Dec 2005 03:54:28 +0200
Ion-Mihai Tetcu <itetcu at people.tecnik93.com> wrote:
> On Wed, 30 Nov 2005 22:00:18 +0100
> Alexander Leidinger <Alexander at Leidinger.net> wrote:
> 
> > On Wed, 30 Nov 2005 21:41:01 +0200
> > Ion-Mihai Tetcu <itetcu at people.tecnik93.com> wrote:
> > 
> > > Hi,
> > > 
> > > 
> > > In my quest to find an other sound card that works with skype, I
> > > salvaged an ESS Solo-1 (ES1938S H209). Trying to play anything
> > > through it results from "pcm channel dead" to hard freezes and
> > > ,the last time I got the panic bellow. Any chance to make it
> > > work or should I keep searching ?
> > > 
> > > 
> > > FreeBSD it.buh.tecnik93.com 6.0-STABLE FreeBSD 6.0-STABLE #4:
> > > Wed Nov 16 15:38:12 EET 2005
> > > 
> > > Unread portion of the kernel message buffer:
> > > panic: _mtx_lock_sleep: recursed on non-recursive mutex pcm0
> > > @
> > > /usr/src/sys/modules/sound/sound/../../../dev/sound/pcm/sound.c
> > > :381
> > 
> > Try the appropriate patch from http://people.freebsd.org/~ariff/
> > and report back please.
> 
> Script started on Thu Dec  1 02:57:31 2005
> ESC[7mroot at it> ESC[0;31m/rootESC[0m [2:57:31] ESC[1;36m0ESC[0m      
>                                  ESC[80`ESC[27m ESC[1m
>                                  ESC[0;31m#ESC[
> 0m ESC[m mpg123 -a /dev/audio0.0  ~itetcu/Media/mp3/Leonard\
> Cohen/Leonard\ Cohen\ -\^M Greatest\ Hits/01\ -\ Suzanne\ .mp3?
> Greatest\ Hits/01\ -\ Suzanne\ .mp3^M High Performance MPEG
> 1.0/2.0/2.5 Audio Player for Layer 1, 2 and 3. Version 0.59r
> (1999/Jun/15). Written and copyrights by Michael Hipp. Uses code
> from various people. See 'README' for more! THIS SOFTWARE COMES WITH
> ABSOLUTELY NO WARRANTY! USE AT YOUR OWN RISK! /dev/dsp: Operation
> not supported by device /dev/dsp: Operation not supported by device
> /dev/dsp: Operation not supported by device
> audio: Operation not supported by device
> ESC[7mroot at it> ESC[0;31m/rootESC[0m [2:57:35] ESC[1;36m1ESC[0m      
>                                  ESC[80`ESC[27m ESC[1m
>                                  ESC[0;31m#ESC[
>
At least there is a known LOR during dsp_open() - dsp.c which can lead
to this panic. I'm currently (painstakingly) working on it. In the
meantime, try not to use "/dev/{audio|dsp}0.0". Instead, use
/dev/audio or /dev/dsp without device/channel unit numbering.

The state of sound driver locking still in its infancy, but a bit
better with those patch, hopefully.


--
Ariff Abdullah
MyBSD

http://www.MyBSD.org.my (IPv6/IPv4)
http://staff.MyBSD.org.my (IPv6/IPv4)
http://tomoyo.MyBSD.org.my (IPv6/IPv4)