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SubjectPROBLEM: aic7xxx SCSI system hangs
Summary : aic7xxx SCSI system hangs 

Full description : After doing cdrecord -toc with an audio CD (CDDA) on my
Plextor drive (PX 32TS), the [scsi_eh_0] proccess remains in uninterruptible
state. All proccesses which will use the SCSI subsystem (e.g. cdrecord,
mkisofs) will be in uninterruptible state too - which renders the SCSI system
unusable until the next reboot. The SCSI system crashes only with my CD-ROM
here. My Plextor PXW1210S does not hang. Reading the TOC with cdda2wav works
here. Somebody told me something similar happens with Plextor PX40 and
cdda2wav. Others reported hangs and didn't tell me anything about their SCSI
system. (I'm coding a cd recording UI frontend and received some bug
reports). The problems remain if I don't use my software but call the
commands from the shell. I think it is a kernel problem. Userspace bugs
(cdrecord,mkisofs?) should not hang the SCSI subsystem anyway.

Keywords : SCSI , cdrecord, mkisofs, aic7xxx

Kernel version : Linux version 2.4.11-pre5-xfs (root@PowerBox.MysticWorld.de)
(gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release / Mandrake Linux
8.1)) #1 Mon Okt 8 13:38:15 CEST 2001

I also tried stable and non-XFS kernels and the problem remains

Shell command : cdrecord -toc dev=x,y,z (with a CDDA in the drive)

My environment : AMD Athlon 900 Mhz
512 MB RAM
2 IDE hard drives
Plextor PX-32TS (the one which makes problems)
Plextor PX-W1210S
Adaptec 2940U2W SCSI controller (both CD drives attached)
nVidia Geforce 2 GFX (using XFree86 drivers)
ALSA sound system (0.5.10) with a SB Live!
------------------------------------- ver_linux ---------------------------
Gnu C 2.96
Gnu make 3.79.1
binutils 2.11.90.0.8
util-linux 2.11h
mount 2.11h
modutils 2.4.10
e2fsprogs 1.24a
PPP 2.4.1
Linux C Library 2.2.4
Dynamic linker (ldd) 2.2.4
Procps 2.0.7
Net-tools 1.60
Console-tools 0.2.3
Sh-utils 2.0.11
----------------------------------------------------------------------------

------------------------------------- cpuinfo -------------------------------
processor : 0
vendor_id : AuthenticAMD
cpu family : 6
model : 4
model name : AMD Athlon(tm) Processor
stepping : 2
cpu MHz : 908.977
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36
mmx fxsr syscall mmxext 3dnowext 3dnow
bogomips : 1808.79
------------------------------------------------------------------------------
----------------------------------- modules ----------------------------------
ppp_deflate 44576 1 (autoclean)
bsd_comp 4928 0 (autoclean)
ppp_async 8032 1 (autoclean)
ppp_generic 22504 3 (autoclean) [ppp_deflate bsd_comp ppp_async]
slhc 6436 1 (autoclean) [ppp_generic]
ipt_LOG 4288 3 (autoclean)
ip6table_filter 2816 0 (autoclean) (unused)
ip6_tables 13920 1 [ip6table_filter]
iptable_filter 2720 0 (autoclean) (unused)
ipt_state 1536 2
ipt_MASQUERADE 2304 1
iptable_nat 19380 0 [ipt_MASQUERADE]
ip_conntrack 22860 2 [ipt_state ipt_MASQUERADE iptable_nat]
ip_tables 13312 7 [ipt_LOG iptable_filter ipt_state
ipt_MASQUERADE iptable_nat]
nfs 87420 1 (autoclean)
snd-synth-emu10k1 5568 0 (autoclean) (unused)
snd-synth-emux 31680 0 (autoclean) [snd-synth-emu10k1]
snd-seq-midi-emul 6384 0 (autoclean) [snd-synth-emux]
snd-seq-virmidi 10400 0 (autoclean) [snd-synth-emux]
snd-seq-midi 4640 0 (autoclean) (unused)
snd-seq-oss 33152 0 (unused)
snd-seq-midi-event 5552 0 [snd-seq-virmidi snd-seq-midi snd-seq-oss]
snd-seq 53040 0 [snd-synth-emux snd-seq-virmidi snd-seq-midi
snd-seq-oss snd-seq-midi-event]
snd-pcm-oss 21312 0 (unused)
snd-pcm-plugin 21552 0 [snd-pcm-oss]
snd-mixer-oss 6432 0 [snd-pcm-oss]
snd-card-emu10k1 3552 0
snd-emu10k1 28608 0 [snd-synth-emu10k1 snd-card-emu10k1]
snd-ac97-codec 29472 0 [snd-emu10k1]
snd-mixer 35368 0 [snd-mixer-oss snd-emu10k1 snd-ac97-codec]
snd-pcm 42880 0 [snd-pcm-oss snd-pcm-plugin snd-emu10k1]
snd-timer 11904 0 [snd-seq snd-pcm]
snd-rawmidi 14624 0 [snd-seq-midi snd-emu10k1]
snd-emux-mem 3744 0 [snd-synth-emux snd-emu10k1]
snd-seq-device 5808 0 [snd-synth-emu10k1 snd-synth-emux
snd-seq-midi snd-seq-oss snd-seq snd-card-emu10k1 snd-rawmidi]
snd 49152 1 [snd-synth-emux snd-seq-virmidi snd-seq-midi
snd-seq-oss snd-seq-midi-event snd-seq snd-pcm-oss snd-pcm-plugin
snd-mixer-oss snd-card-emu10k1 snd-emu10k1 snd-ac97-codec snd-mixer snd-pcm
snd-timer snd-rawmidi snd-emux-mem snd-seq-device]
soundcore 6692 9 [snd]
nfsd 79168 8 (autoclean)
lockd 58528 1 (autoclean) [nfs nfsd]
sunrpc 77140 1 (autoclean) [nfs nfsd lockd]
lp 6400 0
parport_pc 23812 1
parport 35680 1 [lp parport_pc]
ipv6 150240 -1 (autoclean)
usb-ohci 20992 0 (unused)
usbcore 62496 1 [usb-ohci]
tulip 42080 1 (autoclean)
sr_mod 15768 0 (autoclean) (unused)
md 50624 0 (unused)
tuner 6020 1 (autoclean)
tvaudio 10464 0 (autoclean) (unused)
msp3400 16176 1 (autoclean)
bttv 80960 0 (unused)
videodev 8128 3 [bttv]
i2c-algo-bit 8492 1 [bttv]
i2c-core 18400 0 [tuner tvaudio msp3400 bttv i2c-algo-bit]
v4l2-common 8672 0 [bttv]
xfs 530904 4
aic7xxx 112172 0 (unused)
sd_mod 10456 0 (unused)
scsi_mod 83916 3 [sr_mod aic7xxx sd_mod]
xfs_support 9508 0 [xfs]
pagebuf 24896 4 [xfs xfs_support]
-----------------------------------------------------------------------------
------------------------------------ ioports --------------------------------
0000-001f : dma1
0020-003f : pic1
0040-005f : timer
0060-006f : keyboard
0070-007f : rtc
0080-008f : dma page reg
00a0-00bf : pic2
00c0-00df : dma2
00f0-00ff : fpu
0170-0177 : ide1
01f0-01f7 : ide0
02f8-02ff : serial(auto)
0376-0376 : ide1
0378-037a : parport0
037b-037f : parport0
03c0-03df : vga+
03f6-03f6 : ide0
03f8-03ff : serial(auto)
0778-077a : parport0
0cf8-0cff : PCI conf1
b000-bfff : PCI Bus #01
d200-d203 : Advanced Micro Devices [AMD] AMD-751 [Irongate] System Controller
d400-d41f : Creative Labs SB Live! EMU10k1
d400-d41f : EMU10K1
d600-d6ff : Lite-On Communications Inc LNE100TX
d600-d6ff : tulip
d800-d803 : Elsa AG QuickStep 1000
da00-da7f : Elsa AG QuickStep 1000
dc00-dcff : Adaptec AHA-2940U2/W
de00-de07 : Creative Labs SB Live!
f000-f00f : Advanced Micro Devices [AMD] AMD-756 [Viper] IDE
f000-f007 : ide0
f008-f00f : ide1
------------------------------------------------------------------------------

--------------------------------------- iomem --------------------------------
00000000-0009fbff : System RAM
0009fc00-0009ffff : reserved
000a0000-000bffff : Video RAM area
000c0000-000c7fff : Video ROM
000cb800-000d7fff : Extension ROM
000f0000-000fffff : System ROM
00100000-1ffeffff : System RAM
00100000-001ffeeb : Kernel code
001ffeec-002cb227 : Kernel data
1fff0000-1fff7fff : ACPI Tables
1fff8000-1fffffff : ACPI Non-volatile Storage
d5c00000-e5cfffff : PCI Bus #01
d8000000-dfffffff : nVidia Corporation NV11 (GeForce2 MX)
e8000000-ebffffff : Advanced Micro Devices [AMD] AMD-751 [Irongate] System
Controller
eddfe000-eddfefff : Advanced Micro Devices [AMD] AMD-751 [Irongate] System
Controller
eddff000-eddfffff : Brooktree Corporation Bt848 TV with DMA push
eddff000-eddfffff : bttv0
ede00000-efefffff : PCI Bus #01
ee000000-eeffffff : nVidia Corporation NV11 (GeForce2 MX)
efffd000-efffdfff : Advanced Micro Devices [AMD] AMD-756 [Viper] USB
efffd000-efffdfff : usb-ohci
efffee00-efffeeff : Lite-On Communications Inc LNE100TX
efffee00-efffeeff : tulip
efffef80-efffefff : Elsa AG QuickStep 1000
effff000-efffffff : Adaptec AHA-2940U2/W
effff000-efffffff : aic7xxx
ffff0000-ffffffff : reserved
-------------------------------------------------------------------------------

-------------------------------------- lspci --------------------------------
00:00.0 Host bridge: Advanced Micro Devices [AMD] AMD-751 [Irongate] System
Controller (rev 25)
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort+ >SERR- <PERR-
Latency: 120
Region 0: Memory at e8000000 (32-bit, prefetchable) [size=64M]
Region 1: Memory at eddfe000 (32-bit, prefetchable) [size=4K]
Region 2: I/O ports at d200 [disabled] [size=4]
Capabilities: [a0] AGP version 1.0
Status: RQ=15 SBA+ 64bit- FW- Rate=x1,x2
Command: RQ=0 SBA- AGP+ 64bit- FW- Rate=x1

00:01.0 PCI bridge: Advanced Micro Devices [AMD] AMD-751 [Irongate] AGP
Bridge (rev 01) (prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
Status: Cap- 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 120
Bus: primary=00, secondary=01, subordinate=01, sec-latency=32
I/O behind bridge: 0000b000-0000bfff
Memory behind bridge: ede00000-efefffff
Prefetchable memory behind bridge: d5c00000-e5cfffff
BridgeCtl: Parity- SERR+ NoISA- VGA+ MAbort- >Reset- FastB2B-

00:07.0 ISA bridge: Advanced Micro Devices [AMD] AMD-756 [Viper] ISA (rev 01)
Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 0

00:07.1 IDE interface: Advanced Micro Devices [AMD] AMD-756 [Viper] IDE (rev
07) (prog-if 8a [Master SecP PriP])
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 32
Region 4: I/O ports at f000 [size=16]

00:07.3 Bridge: Advanced Micro Devices [AMD] AMD-756 [Viper] ACPI (rev 03)
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-

00:07.4 USB Controller: Advanced Micro Devices [AMD] AMD-756 [Viper] USB (rev
06) (prog-if 10 [OHCI])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 16 (20000ns max), cache line size 08
Interrupt: pin D routed to IRQ 10
Region 0: Memory at efffd000 (32-bit, non-prefetchable) [size=4K]

00:08.0 Multimedia audio controller: Creative Labs SB Live! EMU10000 (rev 04)
Subsystem: Creative Labs CT4620 SBLive!
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 64 (500ns min, 5000ns max)
Interrupt: pin A routed to IRQ 9
Region 0: I/O ports at d400 [size=32]
Capabilities: [dc] Power Management version 1
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:08.1 Input device controller: Creative Labs SB Live! (rev 01)
Subsystem: Creative Labs Gameport Joystick
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 64
Region 0: I/O ports at de00 [size=8]
Capabilities: [dc] Power Management version 1
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:09.0 Multimedia video controller: Brooktree Corporation Bt848 TV with DMA
push (rev 12)
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 64 (4000ns min, 10000ns max)
Interrupt: pin A routed to IRQ 11
Region 0: Memory at eddff000 (32-bit, prefetchable) [size=4K]

00:0a.0 Ethernet controller: Lite-On Communications Inc LNE100TX (rev 20)
Subsystem: Netgear FA310TX
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 64
Interrupt: pin A routed to IRQ 5
Region 0: I/O ports at d600 [size=256]
Region 1: Memory at efffee00 (32-bit, non-prefetchable) [size=256]
Expansion ROM at eff80000 [disabled] [size=256K]

00:0b.0 SCSI storage controller: Adaptec AHA-2940U2/W
Subsystem: Adaptec: Unknown device a180
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 64 (9750ns min, 6250ns max)
Interrupt: pin A routed to IRQ 10
BIST result: 00
Region 0: I/O ports at dc00 [disabled] [size=256]
Region 1: Memory at effff000 (64-bit, non-prefetchable) [size=4K]
Expansion ROM at effc0000 [disabled] [size=128K]
Capabilities: [dc] Power Management version 1
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:0c.0 Network controller: Elsa AG QuickStep 1000 (rev 01)
Subsystem: Elsa AG QuickStep 1000
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Interrupt: pin A routed to IRQ 9
Region 0: Memory at efffef80 (32-bit, non-prefetchable) [size=128]
Region 1: I/O ports at da00 [size=128]
Region 3: I/O ports at d800 [size=4]

01:05.0 VGA compatible controller: nVidia Corporation NV11 (rev a1) (prog-if
00 [VGA])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 64 (1250ns min, 250ns max)
Interrupt: pin A routed to IRQ 11
Region 0: Memory at ee000000 (32-bit, non-prefetchable) [size=16M]
Region 1: Memory at d8000000 (32-bit, prefetchable) [size=128M]
Expansion ROM at efef0000 [disabled] [size=64K]
Capabilities: [60] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [44] AGP version 2.0
Status: RQ=31 SBA- 64bit- FW+ Rate=x1,x2
Command: RQ=0 SBA- AGP- 64bit- FW- Rate=<none>

--------------------------------------------------------------------------------
----------------------------------- scsi -------------------------------------
Attached devices:
Host: scsi0 Channel: 00 Id: 02 Lun: 00
Vendor: PLEXTOR Model: CD-ROM PX-32TS Rev: 1.02
Type: CD-ROM ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 03 Lun: 00
Vendor: PLEXTOR Model: CD-R PX-W1210S Rev: 1.03
Type: CD-ROM ANSI SCSI revision: 02
--------------------------------------------------------------------------------


Alexander Feigl
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