Fatal trap 12 pcm / devfs related?

[Mathew Kanner]

On Jan 24, Michael McGoldrick wrote:
> (kgdb) l *0xc051be9a
> 0xc051be9a is in dsp_clone (/usr/src/sys/dev/sound/pcm/dsp.c:1096).
> 1091            if (unit == -1 || unit >= devclass_get_maxunit(pcm_devclass))
> 1092                    return;
> 1093
> 1094            pcm_dev = devclass_get_softc(pcm_devclass, unit);
> 1095
> 1096            SLIST_FOREACH(pcm_chan, &pcm_dev->channels, link) {
> 1097
> 1098                    switch(devtype) {
> 1099                            case SND_DEV_DSP:
> 1100                                    pdev = pcm_chan->dsp_devt;
> (kgdb) 

	Hello Michael,
	I'm not exactly sure why this is happening and I'm not really
in a place to do debugging, but could you try sticking a

	if (pcm_dev == NULL)
		return;

	at line 1095 and try again.

	Thanks,
	--Mat
	
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