Re: CVS commit: src/sys/dev

[Ryo ONODERA <ryo_on%yk.rim.or.jp@localhost>]

Hi,

After this commit, audio playback causes kernel panic.
The following is kernel panic message from LOCKDEBUG kernel
(manually rewritten).


Mutex error: mutex_vector_exit,717: exiting unheld spin mutex

lock address : 0xfffffe810fc11010 type:	    	           spin
ininialized  : 0xffffffff80733860
shared holds :                  0 exclusive:	              0
shares wanted:			0 exclusive:	              0
current cpu  :			0 last held:	              2
current lwp  : 0xfffffe821eae1000 last held: 000000000000000000
last locked  : 0xffffffff8072440b unlocked*: 0xffffffff808ca55d
owner field  : 0x0000000000000700 wait/spin:                0/1

panic: LOCKDEBUG: Mutex error: mutex_vector_exit,717: exiting unheld spin mutex
fatal breakpoint trap in supervisor mode
trap type 1 code 0 rip ffffffff80215365 cs 8 rflags 246 cr2 7e01df80e010 ilevel 8 rsp fffffe8110371c40
curlwp 0xfffffe821eae1000 pid 41.2 lowest kstack 0xfffffe811036f2c0
Stopped in pid 41.2 (pulseaudio) at netbsd:breakpoint:0x5: leave
db{0}>



From: "Nathanial Sloss" <nat%netbsd.org@localhost>, Date: Fri, 24 Feb 2017 09:49:49 +0000

> Module Name:	src
> Committed By:	nat
> Date:		Fri Feb 24 09:49:49 UTC 2017
> 
> Modified Files:
> 	src/sys/dev: audio.c
> 
> Log Message:
> Simplify locking.  Hold intr lock only when dealing with sc_pr (mix ring)
> or virtual channel 0 (hardware).
> 
> 
> To generate a diff of this commit:
> cvs rdiff -u -r1.309 -r1.310 src/sys/dev/audio.c
> 
> Please note that diffs are not public domain; they are subject to the
> copyright notices on the relevant files.
> 

--
Ryo ONODERA // ryo_on%yk.rim.or.jp@localhost
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