[ALSA - driver 0000952]: System freeze at end of MIDI playback

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A NOTE has been added to this issue.
======================================================================
<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=952> 
======================================================================
Reported By:                skunk
Assigned To:                
======================================================================
Project:                    ALSA - driver
Issue ID:                   952
Category:                   PCI - emu10k1
Reproducibility:            random
Severity:                   crash
Priority:                   normal
Status:                     new
Distribution:               Debian testing
Kernel Version:             2.6.8-2-k7
======================================================================
Date Submitted:             03-01-2005 06:28 CET
Last Modified:              06-08-2006 09:28 CEST
======================================================================
Summary:                    System freeze at end of MIDI playback
Description: 
Hardware: Sound Blaster Live! Value
Software: sfxload (for patch loading) and drvmidi (playback)

I often play a list of MIDI files. On a number of occasions---either at
the end of a MIDI song, or when I hit STOP---the computer has frozen hard.
The recurrence is rare enough to make this more an annoyance than a
showstopper, but then, I haven't been too keen on ferreting out this bug.

I am reporting this against ALSA from the 2.6.8 kernel, as that is what
I'm using now (Debian official package) but the same problem arose with
alsa-driver 1.0.8 (as compiled by me) on 2.4.29.

I could probably rig up something to start/stop MIDI playback repeatedly,
with a debug-compiled driver, but is there any way to get useful debugging
output when the bug takes the whole system down?
======================================================================

----------------------------------------------------------------------
 rlrevell - 06-07-06 19:50 
----------------------------------------------------------------------
Possibly in /var/log/kernel or /var/log/kern.log or whatever the hell your
distro calls the kernel log.  But if the bug kills the machine it's likely
that the panic does not make it to any log.

If you can't trigger the bug from a text console, try doing something in X
that would cause the bug, then switch quickly to a text console - you may
be able to see an Oops that way.

----------------------------------------------------------------------
 skunk - 06-08-06 09:28 
----------------------------------------------------------------------
A kernel panic message---good idea :-)

    http://www.iskunk.org/tmp/alsa-kernel-panic.jpg (1.1 MB)

(I tried to upload this here, but the PHP threw an "out of memory"
error...)

Issue History
Date Modified  Username       Field                    Change              
======================================================================
03-01-05 06:28 skunk          New Issue                                    
03-01-05 06:28 skunk          Distribution              => Debian testing  
03-01-05 06:28 skunk          Kernel Version            => 2.6.8-2-k7      
09-19-05 10:10 jdthood        Note Added: 0006287                          
09-19-05 10:19 skunk          Note Added: 0006290                          
04-23-06 07:57 skunk          Note Added: 0009441                          
06-07-06 18:09 pen            Note Added: 0010085                          
06-07-06 18:09 pen            Issue Monitored: pen                         
06-07-06 18:23 rlrevell       Note Added: 0010086                          
06-07-06 19:45 pen            Note Added: 0010087                          
06-07-06 19:50 rlrevell       Note Added: 0010088                          
06-08-06 09:28 skunk          Note Added: 0010109                          
======================================================================




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