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Subject: Re: Open Sound System - OSS "soundon" command causes KERNEL PANIC
 FreeBSD-11
To: Greg Quinlan <gwq_uk@yahoo.com>,
 "freebsd-current@freebsd.org" <freebsd-current@freebsd.org>
References: <160965484.1978477.1455097861791.JavaMail.yahoo.ref@mail.yahoo.com>
 <160965484.1978477.1455097861791.JavaMail.yahoo@mail.yahoo.com>
From: Hans Petter Selasky <hps@selasky.org>
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Date: Wed, 10 Feb 2016 11:07:23 +0100
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On 02/10/16 10:51, Greg Quinlan wrote:
>
>   Hi,
>
> I haven't seen a Kernel Panic like this for a long time... i.e. repeatable and due to a single command.
>
> I have compiled the port /usr/ports/audio/oss and installed it on FreeBSD11.
>
> A ran  /usr/local/sbin/ossdetect which created the file /usr/local/lib/oss/etc/installed_drivers.
>
> Contents:
> Code:oss_hdaudio #Intel High Definition Audio (CPT)
>
> When i run  /usr/local/sbin/soundon
>
> The system panics..
>
> Code:osscore.ac97_amplifier="0"
> panic: Lock (sx) module subsystem lock sx lock not locked 0 /usr/src/sys/kern/kern_module.c:219
> cpu_id = 1
> :
>

Hi,

Do you have the complete backtrace for this panic?

Do you have any modules under /boot/modules, which are not up to date?

Does the same happen with audio/oss under 10.x ?

--HPS