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From: Christian Borntraeger <linux@borntraeger.net>
To: <andre@linux-ide.org>, <linux-kernel@vger.kernel.org>
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Date: Sat, 19 Oct 2002 20:41:45 +0100
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Subject: PROBLEM: ide-related kernel panic in 2.4.19 and 2.4.20-pre11
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PROBLEM: ide-related kernel panic in 2.4.19 and 2.4.20-pre11

Trying to read a copy-protected audio CD (I think Cactus Data Shield 200) with
readcd I get a reproduceable kernel panic in 2.4.19 and 2.4.20-pre11.
As I can reproduce the bug feel free to ask me any further question, if possible
cc me. (Otherwise it will take a little longer)
The information I gathered is below.
some more files (system.map etc) are on 
http://www.cborntraeger.de/linux/panic.tgz

cheers

Christian
 
-------------------------------------------------
I send the panic through ksymoops:
-------------------------------------------------

ksymoops 2.4.5 on i686 2.4.20-pre11.  Options used
     -V (default)
     -k ksyms (specified)
     -l modules (specified)
     -o /lib/modules/2.4.20-pre11/ (default)
     -m System.map (specified)

Warning (compare_maps): ksyms_base symbol __io_virt_debug_R__ver___io_virt_debug not found in System.map.  Ignoring ksyms_base entry
Unable to handle Kernel Null pointer dereference at virtual address 00000018
f08968f8
CPU 0
EFLAGS: 00010286
eax: ee88e1c4 ebx: c0322f24 ecx: ebedcb64 edx: 0000005a
esi: 00000000 edi: 00000040 ebp: c02a9e74 esp: c02a9e50
00000000 c01da5dc 000003e8 00000046 00000082 ee88e1c4 00000000 c0322f24
00000040 c02a9eac c01da999 c0322f24 00000000 00000000 00000000 000001f4
c02a9ec0 00000000 c0322da4 00000001 c0322f24 c18f218c c0322da4 c02a9ed0
Call Trace: [<c01da5dc>] [<c01dab78>] [<c01dae54>] [<c01dad60>] [<c0124ba3>] 
            [<c012432d>] [<c0120c0f>] [<c0120b26>] [<c0120957>] [<c010a74d>]
            [<c010cc18>] [<c01070c3>] [<c01145e6>] [<c0114530>] [<c0107132>]
            [<c0105000>]
Code: 8b 56 18 c7 45 ec 00 00 00 00 89 70 04 8b 7e 0c 8b 46 1c c7
Using defaults from ksymoops -t elf32-i386 -a i386


>>eax; ee88e1c4 <_end+2e55d100/304e7fbc>
>>ebx; c0322f24 <ide_hwifs+4c4/20a8>
>>ecx; ebedcb64 <_end+2bbabaa0/304e7fbc>
>>ebp; c02a9e74 <init_task_union+1e74/2000>
>>esp; c02a9e50 <init_task_union+1e50/2000>

Trace; c01da5dc <ide_wait_stat+bc/120>
Trace; c01dab78 <ide_do_request+c8/1b0>
Trace; c01dae54 <ide_timer_expiry+f4/1c0>
Trace; c01dad60 <ide_timer_expiry+0/1c0>
Trace; c0124ba3 <run_timer_list+f3/160>
Trace; c012432d <update_wall_time+d/40>
Trace; c0120c0f <bh_action+1f/40>
Trace; c0120b26 <tasklet_hi_action+46/70>
Trace; c0120957 <do_softirq+97/a0>
Trace; c010a74d <do_IRQ+bd/f0>
Trace; c010cc18 <call_do_IRQ+5/d>
Trace; c01070c3 <default_idle+23/30>
Trace; c01145e6 <apm_cpu_idle+b6/150>
Trace; c0114530 <apm_cpu_idle+0/150>
Trace; c0107132 <cpu_idle+42/60>
Trace; c0105000 <_stext+0/0>

Code;  00000000 Before first symbol
00000000 <_EIP>:
Code;  00000000 Before first symbol
   0:   8b 56 18                  mov    0x18(%esi),%edx
Code;  00000003 Before first symbol
   3:   c7 45 ec 00 00 00 00      movl   $0x0,0xffffffec(%ebp)
Code;  0000000a Before first symbol
   a:   89 70 04                  mov    %esi,0x4(%eax)
Code;  0000000d Before first symbol
   d:   8b 7e 0c                  mov    0xc(%esi),%edi
Code;  00000010 Before first symbol
  10:   8b 46 1c                  mov    0x1c(%esi),%eax
Code;  00000013 Before first symbol
  13:   c7 00 00 00 00 00         movl   $0x0,(%eax)

Kernel Panic, Aiee..

1 warning issued.  Results may not be reliable.
---------------------------------------------------
/proc/modules:
---------------------------------------------------

usbmouse                2264   0 (unused)
keybdev                 2080   0 (unused)
mousedev                4244   1
hid                    19300   0 (unused)
input                   3584   0 [usbmouse keybdev mousedev hid]
ide-scsi                8816   0
scsi_mod               56276   1 [ide-scsi]
ide-cd                 30148   0
cdrom                  28608   0 [ide-cd]
usb-uhci               23020   0 (unused)
usbcore                60960   1 [usbmouse hid usb-uhci]
rtc                     6940   0 (autoclean)

-----------------------------------------------
ver-linux
----------------------------------------------- 
Linux cubus.mynet 2.4.20-pre11 #3 Sat Oct 19 18:50:52 BST 2002 i686 unknown unknown GNU/Linux
 
Gnu C                  3.2
Gnu make               3.79.1
util-linux             2.11u
mount                  2.11u
modutils               2.4.19
e2fsprogs              1.27ea
reiserfsprogs          3.6.3
PPP                    2.4.1
Linux C Library        2.2.5
Dynamic linker (ldd)   2.2.5
Procps                 2.0.7
Net-tools              1.60
Console-tools          0.2.3
Sh-utils               2.0.15
Modules Loaded         usbmouse keybdev mousedev hid input ide-scsi scsi_mod ide-cd cdrom usb-uhci usbcore rtc

-------------------------------------------------
/proc/scsi/scsi
-------------------------------------------------
Attached devices: 
Host: scsi0 Channel: 00 Id: 00 Lun: 00
  Vendor: SONY     Model: CD-RW  CRX140E   Rev: 1.0p
  Type:   CD-ROM                           ANSI SCSI revision: 02

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