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SubjectPROBLEM: isofs crash on 2.4.0-test11-pre7 [1.] MAINTAINERS: ISO FILESYSTEM
[2.]  Full description of the problem/report:
using gnome-terminal, the default alias ls='/bin/ls $LS_OPTIONS'
#mount /mnt/cdrom
#cd /mnt/cdrom
#ls
Segmentation fault
#ls
<gnome-terminal freez>
root@darkstar:~# umount /mnt/cdrom
umount: /mnt/cdrom: device is busy
root@darkstar:~# umount -f /mnt/cdrom
umount2: Device or resource busy
umount: /mnt/cdrom: device is busy
#ps ax
...
361 ? D 0:00 /bin/ls --color=auto -F -b -T 0
...
#kill -9 361
#ps ax
...
361 ? D 0:00 /bin/ls --color=auto -F -b -T 0
...
CDROM is now unusable...

[3.] Keywords (i.e., modules, networking, kernel):
Module: isofs
Networking: ppp dialup
Kernel: 2.4.0-test11-pre7

[4.] Kernel version (from /proc/version):
t77@darkstar:~$ cat /proc/version
Linux version 2.4.0-test11 (t77@darkstar) (gcc version egcs-2.91.66
19990314/Linux (egcs-1.1.2 release)) #1 Sat Nov 18 16:23:40 EST 2000

[5.] Output of Oops.. message
ksymoops 2.3.5 on i686 2.4.0-test11. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.0-test11/ (default)
-m /boot/System.map (specified)

Unable to handle kernel paging request at virtual address dfdfdfc4
c486d5a7
*pde = 00000000
Oops: 0000
CPU: 0
EIP: 0010:[<c486d5a7>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010202
eax: dfdfdf00 ebx: c2976960 ecx: c1ddb800 edx: c23f5c00
esi: c1ddb800 edi: c1ddb821 ebp: c233fba0 esp: c15b9eb0
ds: 0018 es: 0018 ss: 0018
Process ls (pid: 229, stackpage=c15b9000)
Stack: c2976960 c486a2bf c1ddb800 c2976960 c27f8000 c10a9df0 c1b3d140
c2976960
c1b3d140 00000001 c01e1818 00000022 00000022 00000000 0b976960
00000800
22994000 c486a3dd c2976960 c1b3d140 c27f8000 c27f8400 fffffff4
c1b3d140
Call Trace: [<c486a2bf>] [<c486a3dd>] [<c013502b>] [<c0135788>]
[<c0134dc7>] [<c0135d90>] [<c0132a26>]
[<c0108daf>]
Code: 8b 90 c4 00 00 00 80 b8 b4 00 00 00 00 74 1e 68 00 10 00 00

>>EIP; c486d5a7 <[isofs]get_joliet_filename+13/87> <=====
Trace; c486a2bf <[isofs]__module_using_checksums+bd/19e>
Trace; c486a3dd <[isofs]isofs_lookup+3d/88>
Trace; c013502b <real_lookup+4f/bc>
Trace; c0135788 <path_walk+5b4/810>
Trace; c0134dc7 <getname+5b/9c>
Trace; c0135d90 <__user_walk+3c/58>
Trace; c0132a26 <sys_newlstat+16/70>
Trace; c0108daf <system_call+33/38>
Code; c486d5a7 <[isofs]get_joliet_filename+13/87>
00000000 <_EIP>:
Code; c486d5a7 <[isofs]get_joliet_filename+13/87> <=====
0: 8b 90 c4 00 00 00 movl 0xc4(%eax),%edx <=====
Code; c486d5ad <[isofs]get_joliet_filename+19/87>
6: 80 b8 b4 00 00 00 00 cmpb $0x0,0xb4(%eax)
Code; c486d5b4 <[isofs]get_joliet_filename+20/87>
d: 74 1e je 2d <_EIP+0x2d> c486d5d4
<[isofs]get_joliet_filename+40/87>
Code; c486d5b6 <[isofs]get_joliet_filename+22/87>
f: 68 00 10 00 00 pushl $0x1000

[6.] A small shell script or example program which triggers the problem
(if possible)
none...


[7.] Environment
[7.1.] Software (add the output of the ver_linux script here)

t77@darkstar:~$ ver_linux
-- Versions installed: (if some fields are empty or looks
-- unusual then possibly you have very old versions)
Linux darkstar 2.4.0-test11 #1 Sat Nov 18 16:23:40 EST 2000 i686 unknown
Kernel modules found
Gnu C egcs-2.91.66
Binutils 2.9.1.0.25
Linux C Library ..
Dynamic Linker (ld.so) 1.9.9
ls: /usr/lib/libg++.so: No such file or directory
Procps 2.0.6
Mount 2.10l
Net-tools (2000-05-21)
Kbd 0.99
Sh-utils 2.0
Sh-utils gJC
Sh-utils
Sh-utils Inc.
Sh-utils NO
Sh-utils PURPOSE.


[7.2.] Processor information (from /proc/cpuinfo):
t77@darkstar:~$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 3
model name : Pentium II (Klamath)
stepping : 4
cpu MHz : 233.000866
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
features : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov mmx
bogomips : 466.94

[7.3.] Module information (from /proc/modules):
t77@darkstar:~$ cat /proc/modules
nls_cp950 98432 1 (autoclean)
sr_mod 12000 1 (autoclean)
cdrom 27360 0 (autoclean) [sr_mod]
isofs 18384 1 (autoclean)
ppp_deflate 40672 1 (autoclean)
bsd_comp 4160 0 (autoclean)
ipchains 31392 0 (unused)
ide-scsi 7984 1
scsi_mod 56640 2 [sr_mod ide-scsi]
emu10k1 45184 0
soundcore 3888 4 [emu10k1]
ppp_async 6512 1
ppp_generic 13056 2 [ppp_deflate bsd_comp ppp_async]
slhc 4688 1 [ppp_generic]

[7.4.] Loaded driver and hardware information (/proc/ioports,
/proc/iomem)
t77@darkstar:~$ 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
02f8-02ff : serial(auto)
0376-0376 : ide1
03c0-03df : vga+
03f6-03f6 : ide0
03f8-03ff : serial(auto)
0cf8-0cff : PCI conf1
4000-403f : Intel Corporation 82371AB PIIX4 ACPI
5000-501f : Intel Corporation 82371AB PIIX4 ACPI
c000-cfff : PCI Bus #01
d000-dfff : PCI Bus #02
d000-d0ff : Advanced System Products, Inc ABP940-U / ABP960-U
e000-e01f : Intel Corporation 82371AB PIIX4 USB
e400-e41f : Creative Labs SB Live! EMU10000
e400-e41f : EMU10K1
e800-e807 : Creative Labs SB Live!
f000-f00f : Intel Corporation 82371AB PIIX4 IDE
f000-f007 : ide0
f008-f00f : ide1
t77@darkstar:~$ cat /proc/iomem
00000000-0009fbff : System RAM
0009fc00-0009ffff : reserved
000a0000-000bffff : Video RAM area
000c0000-000c7fff : Video ROM
000cc000-000cefff : Extension ROM
000f0000-000fffff : System ROM
00100000-03feffff : System RAM
00100000-001de747 : Kernel code
001de748-001eebbf : Kernel data
03ff0000-03ff2fff : ACPI Non-volatile Storage
03ff3000-03ffffff : ACPI Tables
d8000000-dbffffff : Intel Corporation 440BX/ZX - 82443BX/ZX Host bridge
dc000000-ddffffff : PCI Bus #01
dc000000-dcffffff : nVidia Corporation Riva TnT 128 [NV04]
de000000-dfffffff : PCI Bus #02
df000000-df0000ff : Advanced System Products, Inc ABP940-U / ABP960-U
df001000-df001fff : Zoran Corporation ZR36057PQC Video cutting chipset
e0000000-e0ffffff : PCI Bus #01
e0000000-e0ffffff : nVidia Corporation Riva TnT 128 [NV04]
ffff0000-ffffffff : reserved

[7.5.] PCI information ('lspci -vvv' as root)
root@darkstar:~# 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: 64
Region 0: Memory at d8000000 (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
Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
I/O behind bridge: 0000c000-0000cfff
Memory behind bridge: dc000000-ddffffff
Prefetchable memory behind bridge: e0000000-e0ffffff
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

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: 64
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: 64
Interrupt: pin D routed to IRQ 10
Region 4: I/O ports at e000 [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 PCI bridge: PicoPower Technology: Unknown device 0004 (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: 64, cache line size 02
Bus: primary=00, secondary=02, subordinate=02, sec-latency=64
I/O behind bridge: 0000d000-0000dfff
Memory behind bridge: de000000-dfffffff
Prefetchable memory behind bridge: fff00000-000fffff
BridgeCtl: Parity- SERR+ NoISA+ VGA- MAbort- >Reset- FastB2B-

00:0b.0 Multimedia audio controller: Creative Labs SB Live! EMU10000
(rev 05)
Subsystem: Creative Labs CT4850 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: 64 (500ns min, 5000ns max)
Interrupt: pin A routed to IRQ 10
Region 0: I/O ports at e400 [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-

00:0b.1 Input device controller: Creative Labs SB Live! (rev 05)
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 e800 [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-

01:00.0 VGA compatible controller: nVidia Corporation Riva TnT 128
[NV04] (rev 04) (prog-if 00 [VGA])
Subsystem: Diamond Multimedia Systems Viper V550
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 dc000000 (32-bit, non-prefetchable) [size=16M]
Region 1: Memory at e0000000 (32-bit, prefetchable) [size=16M]
Expansion ROM at dd000000 [disabled] [size=64K]
Capabilities: [60] 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-
Capabilities: [44] AGP version 1.0
Status: RQ=15 SBA+ 64bit- FW- Rate=x1,x2
Command: RQ=0 SBA- AGP- 64bit- FW- Rate=<none>

02:08.0 SCSI storage controller: Advanced System Products, Inc ABP940-U
/ ABP960-U (rev 03)
Subsystem: Advanced System Products, Inc ASC1300 SCSI 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: 64 (1000ns min, 1000ns max), cache line size 08
Interrupt: pin A routed to IRQ 5
Region 0: I/O ports at d000 [size=256]
Region 1: Memory at df000000 (32-bit, non-prefetchable) [size=256]
Expansion ROM at de000000 [disabled] [size=64K]

02:09.0 Multimedia video controller: Zoran Corporation ZR36057PQC Video
cutting chipset (rev 02)
Subsystem: Iomega Corporation JPEG/TV Card
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
Latency: 64 (500ns min, 4000ns max)
Interrupt: pin A routed to IRQ 9
Region 0: Memory at df001000 (32-bit, non-prefetchable) [size=4K]

[7.6.] SCSI information (from /proc/scsi/scsi)
t77@darkstar:~$ cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: E-IDE Model: CD-ROM 48X/AKU Rev: U22
Type: CD-ROM ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 01 Lun: 00
Vendor: Traxdata Model: CDRW2260+ Rev: 3.09
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):
none...

[X.] Other notes, patches, fixes, workarounds:
-
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