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Date:      Thu, 14 Sep 2000 06:39:56 +0900
From:      FUJISHIMA Satsuki <toreishi@m08.alpha-net.ne.jp>
To:        freebsd-multimedia@freebsd.org
Subject:   Re: [panic: no feed] FreeBSD 4.1-STABLE and Creative SB AWE64
Message-ID:  <86ya0w3r9v.wl@cheerful.com>
In-Reply-To: In your message of "Sat, 2 Sep 2000 13:55:24 -0500" <20000902135523.A581@hamlet.nectar.com>
References:  <20000901163123.B19985@hamlet.nectar.com> <20000902135523.A581@hamlet.nectar.com>

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Hi,

I can reproduce quite similar panic on 5.0-CURRENT. built with
tag=PRE_SMPNG.

pcm0: <AudioPCI ES1370> port 0xee80-0xeebf irq 11 at device 13.0 on pci0
sbc0: <Creative SB AWE64> at port 0x220-0x22f,0x330-0x331,0x388-0x38b irq 5 drq 1,5 on isa0
sbc0: setting card to irq 5, drq 1, 5
pcm1: <SB DSP 4.16> on sbc0

$ sox -t ossdsp -w -s /dev/dsp1 foo.wav
and panics randomly. -w can be replaced with -b or something.

The same command but recording from /dev/dsp0(AudioPCI) have done
flawlessly.

(kgdb) where
#0  dumpsys () at ../../kern/kern_shutdown.c:461
#1  0xc017b490 in boot (howto=256) at ../../kern/kern_shutdown.c:302
#2  0xc017b83d in panic (fmt=0xc02a4a7f "no feed")
    at ../../kern/kern_shutdown.c:550
#3  0xc015761c in chn_rdfeed2nd (c=0xc15b8200, buf=0xce80dee8)
    at ../../dev/sound/pcm/channel.c:634
#4  0xc0157783 in chn_read (c=0xc15b8200, buf=0xce80dee8)
    at ../../dev/sound/pcm/channel.c:740
#5  0xc015889e in dsp_read (d=0xc1617800, chan=0, buf=0xce80dee8, flag=4521984)
    at ../../dev/sound/pcm/dsp.c:181
#6  0xc015aecb in sndread (i_dev=0xc1616780, buf=0xce80dee8, flag=4521984)
    at ../../dev/sound/pcm/sound.c:474
#7  0xc01b7ce4 in spec_read (ap=0xce80de7c)
    at ../../miscfs/specfs/spec_vnops.c:261
#8  0xc0245480 in ufsspec_read (ap=0xce80de7c)
    at ../../ufs/ufs/ufs_vnops.c:1802
#9  0xc02459a5 in ufs_vnoperatespec (ap=0xce80de7c)
    at ../../ufs/ufs/ufs_vnops.c:2281
#10 0xc01b2b6c in vn_read (fp=0xc182cc80, uio=0xce80dee8, cred=0xc16e2800, 
    flags=0, p=0xce7b8260) at vnode_if.h:334
#11 0xc018d40b in dofileread (p=0xce7b8260, fp=0xc182cc80, fd=3, 
    buf=0x28147f83, nbyte=1, offset=-1, flags=0) at ../../sys/file.h:141
#12 0xc018d2ea in read (p=0xce7b8260, uap=0xce80df80)
    at ../../kern/sys_generic.c:110
#13 0xc0285399 in syscall2 (frame={tf_fs = 47, tf_es = 47, tf_ds = 47, 
      tf_edi = 134856771, tf_esi = 672431936, tf_ebp = 1981, 
      tf_isp = -830414892, tf_ebx = 672356492, tf_edx = 672432003, tf_ecx = 0, 
      tf_eax = 3, tf_trapno = 12, tf_err = 2, tf_eip = 672310484, tf_cs = 31, 
      tf_eflags = 659, tf_esp = -1077938296, tf_ss = 47})
    at ../../i386/i386/trap.c:1150
#14 0xc0279915 in Xint0x80_syscall ()
Cannot access memory at address 0x7bd.
(kgdb)

-- 
FUJISHIMA Satsuki


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