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Date:      Fri, 1 Sep 2000 16:31:23 -0500
From:      "Jacques A. Vidrine" <n@nectar.com>
To:        freebsd-multimedia@freebsd.org
Subject:   [panic: no feed] FreeBSD 4.1-STABLE and Creative SB AWE64
Message-ID:  <20000901163123.B19985@hamlet.nectar.com>

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I just decided to try the ohphone port, and have run into a reproducable
panic.   This is 4.1-STABLE built from sources CVSup'd August 24.

 sbc1: <Creative SB AWE64> at port 0x220-0x22f,0x330-0x331,0x388-0x38b irq 5 drq 1,5 on isa0
 sbc1: setting card to irq 5, drq 1, 5
 pcm0: <SB DSP 4.16> on sbc1

To reproduce:

% sox -t ossdsp -w -s /dev/dsp foo.wav
panic: no feed
Debugger("panic")
Stopped at Debugger+0x34: movb $0, in_Debugger.390

Debugger(c02d37e3) at Debugger+0x34
panic(c02fbe3f, c115d29c, c115d200, cd578edc, 0) at panic+0x70
chn_rdfeed2nd(c115d200, cd578edc) at chn_rdfeed2nd+0x6f
chn_read(c115d200, cd578edc, cd578edc, cd571c40, c115d200) at chn_read+0x67
dsp_read
snd_read
spec_read
ufsspec_read                  and so forth
vfs_vnoperatespec
vn_read
dofileread
read
syscall
Xint0x80_syscall

Unfortunately I didn't have the symbols for this kernel laying around.  
I'll get a kgdb trace in a day or two when I have time to crash again :-)

sox and ohphone are the only two applications with which I tried 
recording... both cause the panic.

Cheers,
-- 
Jacques Vidrine / n@nectar.com / jvidrine@verio.net / nectar@FreeBSD.org


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