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SubjectKernel 2.4-test12-pre4 BUG - scsi (?)
Date
[1.] One line summary of the problem:	 
During burning of CD onto SCSI driver (using cdrecord) crashes. during
the burn (10% or so) it crashes with "Unable to handle kernel null pointer"

[2.] Full description of the problem/report:
During burning of CD onto SCSI driver (using cdrecord) crashes. during
the burn (10% or so) it crashes with "Unable to handle kernel null pointer" and
dumps a whole lot of things to the screen (flags of some sort, eg "eax=..")

[3.] Keywords (i.e., modules, networking, kernel):
scsi, cd record, null pointer

[4.] Kernel version (from /proc/version):
Linux version 2.4.0-test12 (root@crazney) (gcc version 2.95.3 19991030
(prerelease)) #5 Tue Dec 5 10:55:46 EST 2000

[7.] Environment
console??

[7.1.] Software (add the output of the ver_linux script here)
Cdrecord 1.8.1 (i686-pc-linux-gnu) Copyright (C) 1995-2000 Jörg
Schilling

$ sh ver_linux
-- Versions installed: (if some fields are empty or look
-- unusual then possibly you have very old versions)
Linux crazney 2.4.0-test12 #5 Tue Dec 5 10:55:46 EST 2000 i686 unknown
Kernel modules 2.3.17
Gnu C 2.95.3
Gnu Make 3.79
Binutils 2.9.5.0.31
Linux C Library 2.1.3
Dynamic linker ldd (GNU libc) 2.1.3
Procps 2.0.6
Mount 2.10h
Net-tools 1.55
Console-tools 0.2.3
Sh-utils 2.0
Modules Loaded NVdriver 8139too emu10k1


[7.2.] Processor information (from /proc/cpuinfo):
$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 8
model name : Pentium III (Coppermine)
stepping : 3
cpu MHz : 701.606
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 3
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat
pse36 mmx fxsr sse
bogomips : 1399.19

[7.3.] Module information (from /proc/modules):
$ cat /proc/modules
NVdriver 530416 17 (autoclean)
8139too 15296 1 (autoclean)
emu10k1 42960 0


[7.4.] Loaded driver and hardware information (/proc/ioports, /proc/iomem)
$ cat /proc/ioports
0000-001f : dma1
0020-003f : pic1
0040-005f : timer
0060-006f : keyboard
0080-008f : dma page reg
00a0-00bf : pic2
00c0-00df : dma2
00f0-00ff : fpu
0170-0177 : ide1
01f0-01f7 : ide0
0376-0376 : ide1
03c0-03df : vga+
03f6-03f6 : ide0
0cf8-0cff : PCI conf1
4000-403f : Intel Corporation 82371AB PIIX4 ACPI
5000-501f : Intel Corporation 82371AB PIIX4 ACPI
c000-c01f : Intel Corporation 82371AB PIIX4 USB
c400-c4ff : Symbios Logic Inc. (formerly NCR) 53c810
c400-c47f : ncr53c8xx
c800-c81f : Creative Labs SB Live! EMU10000
c800-c81f : EMU10K1
cc00-cc07 : Creative Labs SB Live!
d000-d0ff : Accton Technology Corporation SMC2-1211TX
d000-d0ff : eth0
d400-d407 : Triones Technologies, Inc. HPT366
d400-d407 : ide2
d800-d803 : Triones Technologies, Inc. HPT366
d802-d802 : ide2
dc00-dcff : Triones Technologies, Inc. HPT366
dc00-dc07 : ide2
dc10-dcff : HPT366
e000-e007 : Triones Technologies, Inc. HPT366 (#2)
e400-e403 : Triones Technologies, Inc. HPT366 (#2)
e800-e8ff : Triones Technologies, Inc. HPT366 (#2)
e800-e807 : ide3
e810-e8ff : HPT366
f000-f00f : Intel Corporation 82371AB PIIX4 IDE
f000-f007 : ide0
f008-f00f : ide1


$ cat /proc/iomem
00000000-0009efff : System RAM
000a0000-000bffff : Video RAM area
000c0000-000c7fff : Video ROM
000d0000-000d17ff : Extension ROM
000f0000-000fffff : System ROM
00100000-09ffffff : System RAM
00100000-00257e2f : Kernel code
00257e30-0026cee3 : Kernel data
d8000000-dfffffff : PCI Bus #01
d8000000-dfffffff : nVidia Corporation NV15 (Geforce2 GTS)
e0000000-e3ffffff : Intel Corporation 440BX/ZX - 82443BX/ZX Host bridge
e4000000-e7ffffff : S3 Inc. ViRGE/DX or /GX
e8000000-e9ffffff : PCI Bus #01
e8000000-e8ffffff : nVidia Corporation NV15 (Geforce2 GTS)
ec000000-ec0000ff : Accton Technology Corporation SMC2-1211TX
ec000000-ec0000ff : eth0
ec001000-ec0010ff : Symbios Logic Inc. (formerly NCR) 53c810

[7.5.] PCI information ('lspci -vvv' as root)
See end of email (look down!)

[7.6.] SCSI information (from /proc/scsi/scsi)
$ cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 01 Lun: 00
Vendor: MATSHITA Model: CD-R CW-7502 Rev: 4.17
Type: CD-ROM ANSI SCSI revision: 02

[7.7.] Other information that might be relevant to the problem
(please look in /proc and include all information that you
think to be relevant):

scsi card is a Symbios Logic Inc. (formerly NCR) 53c810 compiled INTO
the kernle (statically linked).
other scsi stuff in the kernel is:

*SCSI support [Y]
*SCSI CD-ROM support [Y]
2 max drives as modules
*SCSI generic support [Y]
---- Low level
<*> NCR53C8XX SCSI support
(4) default tagged command queue depth
(32) maximum number of queued commands
(20) synchronous transfers frequency in MHz
--------------------
output of "cdrecord -scanbus":
# cdrecord -scanbus
Cdrecord 1.8.1 (i686-pc-linux-gnu) Copyright (C) 1995-2000 Jörg Schilling
Using libscg version 'schily-0.1'
scsibus0:
0,0,0 0) *
0,1,0 1) 'MATSHITA' 'CD-R CW-7502 ' '4.17' Removable CD-ROM
0,2,0 2) *
0,3,0 3) *
0,4,0 4) *
0,5,0 5) *
0,6,0 6) *
0,7,0 7) *
-----------------------

I havent burned any cd's since 2.4-test5, so i dont know when this problem was
introduced.

-----------------------------
[7.5.] PCI information ('lspci -vvv' as root)

# lspci -vvv
00:00.0 Host bridge: Intel Corporation 440BX/ZX - 82443BX/ZX Host bridge (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-
Latency: 32 set
Region 0: Memory at e0000000 (32-bit, prefetchable) [size=64M]
Capabilities: [a0] AGP version 1.0
Status: RQ=31 SBA+ 64bit- FW- Rate=x1,x2
Command: RQ=0 SBA- AGP- 64bit- FW- Rate=<none>

00:01.0 PCI bridge: Intel Corporation 440BX/ZX - 82443BX/ZX AGP bridge (rev 03)
(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: 64 set
Bus: primary=00, secondary=01, subordinate=01, sec-latency=32
I/O behind bridge: 0000f000-00000fff
Memory behind bridge: e8000000-e9ffffff
Prefetchable memory behind bridge: d8000000-dfffffff
BridgeCtl: Parity- SERR- NoISA- VGA+ MAbort- >Reset- FastB2B+

00:07.0 ISA bridge: Intel Corporation 82371AB PIIX4 ISA (rev 02)
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 set

00:07.1 IDE interface: Intel Corporation 82371AB PIIX4 IDE (rev 01) (prog-if 80
[Master])
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 set
Region 4: I/O ports at f000 [size=16]

00:07.2 USB Controller: Intel Corporation 82371AB PIIX4 USB (rev 01) (prog-if
00 [UHCI])
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 set
Interrupt: pin D routed to IRQ 11
Region 4: I/O ports at c000 [size=32]

00:07.3 Bridge: Intel Corporation 82371AB PIIX4 ACPI (rev 02)
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-

00:09.0 VGA compatible controller: S3 Inc. ViRGE/DX or /GX (rev 01) (prog-if 00
[VGA])
Subsystem: S3 Inc. ViRGE/DX
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 4
Region 0: Memory at e4000000 (32-bit, non-prefetchable) [disabled]
[size=64M]
Expansion ROM at ea000000 [disabled] [size=64K]

00:0b.0 SCSI storage controller: Symbios Logic Inc. (formerly NCR) 53c810 (rev
23)
Subsystem: Symbios Logic Inc. (formerly NCR) 8100S
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: 8 min, 64 max, 32 set, cache line size 08
Interrupt: pin A routed to IRQ 11
Region 0: I/O ports at c400 [size=256]
Region 1: Memory at ec001000 (32-bit, non-prefetchable) [size=256]
Capabilities: [40] Power Management version 1
Flags: PMEClk- AuxPwr- DSI- D1- D2- PME-
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:0d.0 Multimedia audio controller: Creative Labs SB Live! EMU10000 (rev 08)
Subsystem: Creative Labs CT4832 SBLive! Value
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: 2 min, 20 max, 32 set
Interrupt: pin A routed to IRQ 3
Region 0: I/O ports at c800 [size=32]
Capabilities: [dc] Power Management version 1
Flags: PMEClk- AuxPwr- DSI- D1+ D2+ PME-
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:0d.1 Input device controller: Creative Labs SB Live! (rev 08)
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: 32 set
Region 0: I/O ports at cc00 [size=8]
Capabilities: [dc] Power Management version 1
Flags: PMEClk- AuxPwr- DSI- D1+ D2+ PME-
Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:0f.0 Ethernet controller: Accton Technology Corporation SMC2-1211TX (rev 10)
Subsystem: Accton Technology Corporation EN-1207D Fast Ethernet Adapter
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 min, 64 max, 32 set
Interrupt: pin A routed to IRQ 4
Region 0: I/O ports at d000 [size=256]
Region 1: Memory at ec000000 (32-bit, non-prefetchable) [size=256]
Capabilities: [50] Power Management version 2
Flags: PMEClk- AuxPwr- DSI- D1+ D2+ PME+
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [60] Vital Product Data

00:13.0 Unknown mass storage controller: Triones Technologies, Inc. HPT366 (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: 8 min, 8 max, 248 set, cache line size 08
Interrupt: pin A routed to IRQ 3
Region 0: I/O ports at d400 [size=8]
Region 1: I/O ports at d800 [size=4]
Region 4: I/O ports at dc00 [size=256]
Expansion ROM at eb000000 [disabled] [size=128K]

00:13.1 Unknown mass storage controller: Triones Technologies, Inc. HPT366 (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: 8 min, 8 max, 248 set, cache line size 08
Interrupt: pin B routed to IRQ 3
Region 0: I/O ports at e000 [size=8]
Region 1: I/O ports at e400 [size=4]
Region 4: I/O ports at e800 [size=256]

01:00.0 VGA compatible controller: nVidia Corporation NV15 (Geforce2 GTS) (rev
a3) (prog-if 00 [VGA])
Subsystem: Asustek Computer, Inc.: Unknown device 400e
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: 5 min, 1 max, 248 set
Interrupt: pin A routed to IRQ 10
Region 0: Memory at e8000000 (32-bit, non-prefetchable) [size=16M]
Region 1: Memory at d8000000 (32-bit, prefetchable) [size=128M]
Expansion ROM at <unassigned> [disabled] [size=64K]
Capabilities: [60] Power Management version 1
Flags: PMEClk- AuxPwr- DSI- D1- D2- PME-
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>
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