[ALSA - driver 0000167]: alsamixer crashes system when snd-ioctl32 is loaded

[bugtrack@alsa-project.org]

A NOTE has been added to this issue.
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<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=167> 
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Reported By:                bons78
Assigned To:                
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Project:                    ALSA - driver
Issue ID:                   167
Category:                   SPARC - cs4231
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     new
Distribution:               debian/unstable
Kernel Version:             linux-2.6.4+
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Date Submitted:             03-30-2004 00:02 CEST
Last Modified:              11-21-2004 21:26 CET
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Summary:                    alsamixer crashes system when snd-ioctl32 is loaded
Description: 
alsamixer crashes system hard when snd-ioctl32 is loaded.
System still responds to some sysrq commands (sync remount boot show) -
sysrq (term killall) has no effect.
There's no chance to do any other keyboard input. No logs, no traps, no
oops. Machine still responds to ping,(even port 22 stays open) but login
via ssh is not possible. 

alsamixer, of course, is useless without the ioctl32 wrapper loaded - but
does not crash the system then.
So I suspect a problem in the ioctl32 wrapper.



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----------------------------------------------------------------------
 sjoerd - 11-21-04 17:44 
----------------------------------------------------------------------
A friend of mine just tried both my patches on his blade 100. The cvs patch
against 2.6.10-rc2 did indeed freeze his machine. Linux 2.6.9 with the
patch that was on the sparclinux list worked fine.. So either i forgot to
forward port something or something else was broken..

On a side note, his sound didn't have any distorsions. So the bad quality
i'm hearing is the alsa driver for my card and not the 32 bit emulation
layer

----------------------------------------------------------------------
 eradicator - 11-21-04 21:26 
----------------------------------------------------------------------
ok, good point about the code testing on different archs, and you're right
about the speedup being minimal... I'm just alays nervous about changing
something for other architectures when I can't test it...  I still want to
leave in the #ifdef stuff around the indirect code as we didn't really
"fix" that so much as forced it to return an error...

I'll try out 2.6.9 with your list patch and compare to see what's going
wrong...

Also, I'm not familiar with "__attribute__((packed));"  What does that do,
and why was that removed from the ends of the structs?

Issue History
Date Modified  Username       Field                    Change              
======================================================================
03-30-04 00:02 bons78         New Issue                                    
03-30-04 00:02 bons78         Distribution              => debian/unstable 
03-30-04 00:02 bons78         Kernel Version            => linux-2.6.4+    
04-13-04 19:41 tiwai          Note Added: 0000795                          
07-04-04 22:32 weeve          Note Added: 0001381                          
07-05-04 08:09 eradicator     Issue Monitored: eradicator                    
11-19-04 05:45 weeve          Note Added: 0002474                          
11-19-04 05:46 weeve          Issue Monitored: weeve                       
11-19-04 05:55 rlrevell       Note Added: 0002475                          
11-20-04 10:23 eradicator     Note Added: 0002478                          
11-20-04 11:14 eradicator     Note Added: 0002479                          
11-20-04 16:36 sjoerd         File Added: sparc-alsa-cvs.patch                  
 
11-20-04 16:36 sjoerd         Note Added: 0002480                          
11-20-04 18:15 sjoerd         Issue Monitored: sjoerd                      
11-21-04 03:05 eradicator     Note Added: 0002482                          
11-21-04 11:34 eradicator     File Added: alsa-driver-1.0.7.ioctl32.patch       
            
11-21-04 11:39 eradicator     Note Added: 0002485                          
11-21-04 11:49 eradicator     File Added: alsa-driver-1.0.7.ioctl32.patch       
            
11-21-04 11:50 eradicator     Note Added: 0002486                          
11-21-04 11:57 eradicator     Note Added: 0002487                          
11-21-04 12:54 sjoerd         Note Added: 0002488                          
11-21-04 17:44 sjoerd         Note Added: 0002489                          
11-21-04 21:26 eradicator     Note Added: 0002490                          
======================================================================




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