2.6.5 oops on reboot from snd_mpu401_uart

From: Meelis Roos
Date: Mon Apr 19 2004 - 04:58:07 EST

Beginning with 2.6.5-rc1 I had an oops with panic on reboot on one
specific computer. Since I couldn't capture it, I ignored it for some
time but it's still present in yesterdays 2.6.6-rc1+BK snapshot. So I
took a snapshot of the oops with digital camera and it is available at
http://www.cs.ut.ee/~mroos/sound-oops.jpg for some time.

It only happens when I have used PCM sound after boot. Just booting the
machine up, logging into KDE (it restores mixer settings), playing TV
with tvtime (also uses mixer) and rebooting shows no problem. As soon as
I play one file with sound using mplayer, the reboot hangs with this
oops & panic.

I am using alsa drivers with snd_ens1371 (primary card, tested with
mplayer) and snd_via82xx (secondary card) drivers. snd_pcm_oss and
snd_mixer_oss are also loaded. snd_via82xx depends on snd_mpu401_uart so
this is also loaded. I don use midi uart, at least not knowingly.

/proc/asound/cards:
0 [AudioPCI ]: ENS1371 - Ensoniq AudioPCI
Ensoniq AudioPCI ENS1371 at 0xe000, irq 11
1 [rev50 ]: VIA686A - VIA 82C686A/B rev50
VIA 82C686A/B rev50 at 0xcc00, irq 10
2 [Bt878 ]: Bt87x - Brooktree Bt878
Brooktree Bt878 at 0xd9003000, irq 11

/proc/asound/devices:
0: [0- 0]: ctl
8: [0- 0]: raw midi
17: [0- 1]: digital audio playback
16: [0- 0]: digital audio playback
24: [0- 0]: digital audio capture
1: : sequencer
33: : timer
32: [1- 0]: ctl
40: [1- 0]: raw midi
48: [1- 0]: digital audio playback
56: [1- 0]: digital audio capture
64: [2- 0]: ctl
89: [2- 1]: digital audio capture
88: [2- 0]: digital audio capture

lsmod:
Module Size Used by
nls_iso8859_1 4096 0
nls_cp437 5760 0
binfmt_misc 10056 1
snd_seq_midi_event 7680 0
snd_seq 50320 1 snd_seq_midi_event
md5 4224 1
ipv6 238560 18
ipt_MASQUERADE 3840 1
iptable_nat 23916 2 ipt_MASQUERADE
ipt_REJECT 6656 2
ipt_LOG 6528 1
ipt_state 2048 17
ip_conntrack 34432 3 ipt_MASQUERADE,iptable_nat,ipt_state
iptable_filter 2880 1
ip_tables 17536 6 ipt_MASQUERADE,iptable_nat,ipt_REJECT,ipt_LOG,ipt_state,iptable_filter
cls_u32 7748 4
sch_sfq 5504 2
sch_cbq 17152 1
usb_storage 64320 0
btaudio 17040 0
es1371 35328 0
via82cxxx_audio 28808 0
uart401 11652 1 via82cxxx_audio
sound 80108 2 via82cxxx_audio,uart401
ac97_codec 17484 2 es1371,via82cxxx_audio
snd_bt87x 13380 0
uhci_hcd 30032 0
usbcore 102428 4 usb_storage,uhci_hcd
vfat 14976 0
fat 44480 1 vfat
md 45896 0
dm_mod 41696 0
parport_pc 38016 1
lp 10244 0
parport 39368 2 parport_pc,lp
snd_pcm_oss 50852 0
snd_mixer_oss 18496 1 snd_pcm_oss
snd_via82xx 24128 0
snd_mpu401_uart 7488 1 snd_via82xx
snd_ens1371 22116 0
snd_rawmidi 24032 2 snd_mpu401_uart,snd_ens1371
snd_seq_device 8072 2 snd_seq,snd_rawmidi
snd_pcm 93092 4 snd_bt87x,snd_pcm_oss,snd_via82xx,snd_ens1371
snd_page_alloc 11012 3 snd_bt87x,snd_via82xx,snd_pcm
snd_timer 24388 2 snd_seq,snd_pcm
snd_ac97_codec 59268 2 snd_via82xx,snd_ens1371
snd 52452 13 snd_seq_midi_event,snd_seq,snd_bt87x,snd_pcm_oss,snd_mixer_oss,snd_via82xx,snd_mpu401_uart,snd_ens1371,snd_rawmidi,snd_seq_device,snd_pcm,snd_timer,snd_ac97_codec
sd_mod 21120 0
scsi_mod 119628 2 usb_storage,sd_mod
mga 101744 30
ide_cd 40964 1
cdrom 37920 1 ide_cd
floppy 58452 0
tuner 17804 0
tvaudio 21580 0
msp3400 22932 0
bttv 147500 0
video_buf 20420 1 bttv
v4l2_common 6208 1 bttv
btcx_risc 4808 1 bttv
videodev 9536 1 bttv
soundcore 9696 6 btaudio,es1371,via82cxxx_audio,sound,snd,bttv
8139too 23936 0
mii 4928 1 8139too


lspci output:
0000:00:00.0 Host bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133] (rev 02)
Flags: bus master, medium devsel, latency 0
Memory at d0000000 (32-bit, prefetchable)
Capabilities: <available only to root>

0000:00:01.0 PCI bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133 AGP] (prog-if 00 [Normal decode])
Flags: bus master, 66MHz, medium devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
Memory behind bridge: d6000000-d8ffffff
Prefetchable memory behind bridge: d4000000-d5ffffff
Capabilities: <available only to root>

0000:00:07.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South] (rev 40)
Subsystem: VIA Technologies, Inc. VT82C686/A PCI to ISA Bridge
Flags: bus master, stepping, medium devsel, latency 0
Capabilities: <available only to root>

0000:00:07.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C/VT8235 PIPC Bus Master IDE (rev 06) (prog-if 8a [Master SecP PriP])
Flags: bus master, medium devsel, latency 32
I/O ports at c000 [size=16]
Capabilities: <available only to root>

0000:00:07.2 USB Controller: VIA Technologies, Inc. VT6202 [USB 2.0 controller] (rev 16) (prog-if 00 [UHCI])
Subsystem: VIA Technologies, Inc. (Wrong ID) USB Controller
Flags: bus master, medium devsel, latency 32, IRQ 9
I/O ports at c400 [size=32]
Capabilities: <available only to root>

0000:00:07.3 USB Controller: VIA Technologies, Inc. VT6202 [USB 2.0 controller] (rev 16) (prog-if 00 [UHCI])
Subsystem: VIA Technologies, Inc. (Wrong ID) USB Controller
Flags: bus master, medium devsel, latency 32, IRQ 9
I/O ports at c800 [size=32]
Capabilities: <available only to root>

0000:00:07.4 Host bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 40)
Flags: medium devsel, IRQ 11
Capabilities: <available only to root>

0000:00:07.5 Multimedia audio controller: VIA Technologies, Inc. VT82C686 AC97 Audio Controller (rev 50)
Subsystem: Micro-Star International Co., Ltd.: Unknown device 3300
Flags: medium devsel, IRQ 10
I/O ports at cc00
I/O ports at d000 [size=4]
I/O ports at d400 [size=4]
Capabilities: <available only to root>

0000:00:09.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
Subsystem: Realtek Semiconductor Co., Ltd. RT8139
Flags: bus master, medium devsel, latency 32, IRQ 11
I/O ports at d800
Memory at d9000000 (32-bit, non-prefetchable) [size=256]
Capabilities: <available only to root>

0000:00:0a.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
Subsystem: Realtek Semiconductor Co., Ltd. RT8139
Flags: bus master, medium devsel, latency 32, IRQ 10
I/O ports at dc00
Memory at d9001000 (32-bit, non-prefetchable) [size=256]
Capabilities: <available only to root>

0000:00:0c.0 Multimedia audio controller: Ensoniq ES1371 [AudioPCI-97] (rev 08)
Subsystem: Ensoniq Creative Sound Blaster AudioPCI64V, AudioPCI128
Flags: bus master, slow devsel, latency 32, IRQ 11
I/O ports at e000
Capabilities: <available only to root>

0000:00:0d.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 02)
Subsystem: Hauppauge computer works Inc. WinTV Series
Flags: bus master, medium devsel, latency 32, IRQ 11
Memory at d9002000 (32-bit, prefetchable)

0000:00:0d.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 02)
Subsystem: Hauppauge computer works Inc. WinTV Series
Flags: bus master, medium devsel, latency 32, IRQ 11
Memory at d9003000 (32-bit, prefetchable)

0000:01:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G400 AGP (rev 05) (prog-if 00 [VGA])
Subsystem: Matrox Graphics, Inc. Millennium G400 MAX/Dual Head 32Mb
Flags: bus master, medium devsel, latency 64, IRQ 9
Memory at d4000000 (32-bit, prefetchable)
Memory at d6000000 (32-bit, non-prefetchable) [size=16K]
Memory at d7000000 (32-bit, non-prefetchable) [size=8M]
Capabilities: <available only to root>

interrupts:
CPU0
0: 49645510 XT-PIC timer
1: 3117 XT-PIC i8042
2: 0 XT-PIC cascade
8: 7374022 XT-PIC rtc
9: 4213172 XT-PIC uhci_hcd, uhci_hcd, mga@PCI:1:0:0
10: 753060 XT-PIC VIA686A, eth1
11: 525873 XT-PIC acpi, bttv0, Ensoniq AudioPCI, Bt87x audio, eth0
12: 800358 XT-PIC i8042
14: 185088 XT-PIC ide0
15: 445660 XT-PIC ide1
NMI: 0
LOC: 49641573
ERR: 120317
MIS: 0


--
Meelis Roos (mroos@xxxxxxxx)

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