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From: "Erik Moe" <emoe@cox.net>
To: "Don Lewis" <truckman@FreeBSD.org>
Date: Thu, 29 Jan 2004 01:04:15 -0600
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cc: freebsd-current@FreeBSD.org
cc: jhb@FreeBSD.org
Subject: RE: 5.2-RELEASE panic in turnstile_wait
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My loader.conf looks like this...

hw.pci.allow_unsupported_io_range="1"
hw.ata.atapi_dma="1"

hw.snd.pcm0.vchans=4
hw.snd.maxautovchans=4

> -----Original Message-----
> From: Don Lewis [mailto:truckman@FreeBSD.org]
> Sent: Thursday, January 29, 2004 12:56 AM
> To: emoe@cox.net
> Cc: jhb@FreeBSD.org; freebsd-current@FreeBSD.org
> Subject: Re: 5.2-RELEASE panic in turnstile_wait
> 
> 
> On 29 Jan, Erik Moe wrote:
> > Humm....  crashing the stack for fun and profit....
> > 
> > 
> > (kgdb) frame 7
> > #7  0xc0546015 in _mtx_lock_sleep (m=0xc69e0aa8, opts=0,
> >     file=0xc06f3a10 "/usr/src/sys/kern/kern_exit.c", line=453)
> >     at /usr/src/sys/kern/kern_mutex.c:476
> > 476			turnstile_wait(ts, &m->mtx_object, mtx_owner(m));
> > (kgdb) p *m
> > $1 = {mtx_object = {lo_class = 0x0, lo_name = 0x0, lo_type = 0x0,
> >     lo_flags = 0, lo_list = {tqe_next = 0x0, tqe_prev = 0x0},
> >     lo_witness = 0x0}, mtx_lock = 0, mtx_recurse = 0}
> 
> Hmn, lots of zeros.  Would you happen to be using audio hardware with
> vchans?
> 
>