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    Subject2.4.19: oops in ide-scsi
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    Date
    [1.] One line summary of the problem:    

    Reading on /dev/cdrom crashes the kernel.

    [2.] Full description of the problem/report:

    When dd'ing from /dev/cdrom (managed) by ide-scsi, the kernel
    reboots. Ooops was caught by kmsgdump.

    [3.] Keywords (i.e., modules, networking, kernel):

    ide-scsi cdrom ide oops

    [4.] Kernel version (from /proc/version):

    Linux version 2.4.19 (root@ceramic) (gcc version 2.95.4 20011002 (Debian prerelease)) #1 SMP Wed Aug 14 17:42:02 PDT 2002

    [5.] Output of Oops.. message (if applicable) with symbolic information
    resolved (see Documentation/oops-tracing.txt)

    ksymoops 2.4.5 on i686 2.4.19. Options used
    -V (default)
    -k /proc/ksyms (default)
    -l /proc/modules (default)
    -o /lib/modules/2.4.19/ (default)
    -m /boot/System.map-2.4.19 (default)

    Warning: You did not tell me where to find symbol information. I will
    assume that the log matches the kernel and modules that are running
    right now and I'll use the default options above for symbol resolution.
    If the current kernel and/or modules do not match the log, you can get
    more accurate output by telling me the kernel version and where to find
    map, modules, ksyms etc. ksymoops -h explains the options.

    <1>Unable to handle kernel paging request at virtual address f6e8db63
    <6>c68204e0
    <1>*pde = 00000000
    <6>Oops: 0002
    <6>CPU: 0
    <6>EIP: 0010:[<c68204e0>] Not tainted
    Using defaults from ksymoops -t elf32-i386 -a i386
    <6>EFLAGS: 00013202
    <6>eax: 00000051 ebx: c089c000 ecx: c0305744 edx: 00000177
    <6>esi: c11c3ac0 edi: f6e8db4b ebp: c03058d4 esp: c02a3f04
    <6>ds: 0018 es: 0018 ss: 0018
    <6>Process swapper (pid: 0, stackpage=c02a3000)
    <6>Stack: c03058d4 c11fcd60 00003282 c0305744 00003002 c0305851 c01b002c c03058d4
    <6> c117aa40 04000001 00000000 0000000f c682046c c010a394 0000000f c11fcd60
    <6> c02a3f84 c02e7640 c02bc9e0 0000000f c02a3f7c c010a586 0000000f c02a3f84
    <6>Call Trace: [<c01b002c>] [<c682046c>] [<c010a394>] [<c010a586>] [<c010caf8>]
    <6> [<c0106c7c>] [<c68c8415>] [<c68c830c>] [<c0106c50>] [<c0106ce2>] [<c0105000>]
    <6> [<c010504f>]
    <6>Code: ff 47 18 8b 85 f0 00 00 00 8b 40 04 50 6a 01 e8 24 fd ff ff


    >>EIP; c68204e0 <[ide-scsi]idescsi_pc_intr+74/23c> <=====

    >>ebx; c089c000 <_end+587294/64ed294>
    >>ecx; c0305744 <ide_hwifs+364/21e8>
    >>esi; c11c3ac0 <_end+eaed54/64ed294>
    >>edi; f6e8db4b <END_OF_CODE+30541cac/????>
    >>ebp; c03058d4 <ide_hwifs+4f4/21e8>
    >>esp; c02a3f04 <init_task_union+1f04/2000>

    Trace; c01b002c <ide_intr+f8/164>
    Trace; c682046c <[ide-scsi]idescsi_pc_intr+0/23c>
    Trace; c010a394 <handle_IRQ_event+50/7c>
    Trace; c010a586 <do_IRQ+a6/ec>
    Trace; c010caf8 <call_do_IRQ+5/d>
    Trace; c0106c7c <default_idle+2c/34>
    Trace; c68c8415 <[apm]apm_cpu_idle+109/13c>
    Trace; c68c830c <[apm]apm_cpu_idle+0/13c>
    Trace; c0106c50 <default_idle+0/34>
    Trace; c0106ce2 <cpu_idle+3e/54>
    Trace; c0105000 <_stext+0/0>
    Trace; c010504f <rest_init+4f/50>

    Code; c68204e0 <[ide-scsi]idescsi_pc_intr+74/23c>
    00000000 <_EIP>:
    Code; c68204e0 <[ide-scsi]idescsi_pc_intr+74/23c> <=====
    0: ff 47 18 incl 0x18(%edi) <=====
    Code; c68204e3 <[ide-scsi]idescsi_pc_intr+77/23c>
    3: 8b 85 f0 00 00 00 mov 0xf0(%ebp),%eax
    Code; c68204e9 <[ide-scsi]idescsi_pc_intr+7d/23c>
    9: 8b 40 04 mov 0x4(%eax),%eax
    Code; c68204ec <[ide-scsi]idescsi_pc_intr+80/23c>
    c: 50 push %eax
    Code; c68204ed <[ide-scsi]idescsi_pc_intr+81/23c>
    d: 6a 01 push $0x1
    Code; c68204ef <[ide-scsi]idescsi_pc_intr+83/23c>
    f: e8 24 fd ff ff call fffffd38 <_EIP+0xfffffd38> c6820218 <[ide-scsi]idescsi_end_request+0/254>

    <6> <0>Kernel panic: Aiee, killing interrupt handler!
    1+0 records in
    1+0 records out

    1 warning issued. Results may not be reliable.

    [6.] A small shell script or example program which triggers the
    problem (if possible)

    dd bs=1k count=650000 < /dev/cdrom > /dev/null

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

    Debian GNU/Linux 3.0

    If some fields are empty or look unusual you may have an old version.
    Compare to the current minimal requirements in Documentation/Changes.

    Linux electrolyt 2.4.19 #1 SMP Wed Aug 14 17:42:02 PDT 2002 i686 unknown

    Gnu C 2.95.4
    Gnu make 3.79.1
    util-linux 2.11n
    mount 2.11n
    modutils 2.4.15
    e2fsprogs 1.27
    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 2.0.11
    Modules Loaded microcode mousedev input usb-uhci usbcore lvm-mod apm opl3 sb sb_lib uart401 isa-pnp sound soundcore nfsd nfs lockd sunrpc vfat msdos fat isofs sg sr_mod cdrom ide-scsi loop floppy 3c59x af_packet

    [7.2.] Processor information (from /proc/cpuinfo):

    processor : 0
    vendor_id : GenuineIntel
    cpu family : 6
    model : 5
    model name : Celeron (Covington)
    stepping : 0
    cpu MHz : 267.275
    cache size : 32 KB
    fdiv_bug : no
    hlt_bug : no
    f00f_bug : no
    coma_bug : no
    fpu : yes
    fpu_exception : yes
    cpuid level : 2
    wp : yes
    flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 mmx fxsr
    bogomips : 532.48

    [7.3.] Module information (from /proc/modules):

    microcode 3744 0 (autoclean)
    mousedev 3904 1
    input 3232 0 [mousedev]
    usb-uhci 21860 0 (unused)
    usbcore 56544 1 [usb-uhci]
    lvm-mod 61152 9
    apm 9536 1
    opl3 11080 0 (unused)
    sb 7392 0 (unused)
    sb_lib 33184 0 [sb]
    uart401 6112 0 [sb_lib]
    isa-pnp 27580 0 [sb]
    sound 54124 0 [opl3 sb_lib uart401]
    soundcore 3460 5 [sb_lib sound]
    nfsd 66336 8
    nfs 73564 5
    lockd 47104 1 [nfsd nfs]
    sunrpc 61428 1 [nfsd nfs lockd]
    vfat 9276 0 (unused)
    msdos 4796 0 (unused)
    fat 29656 0 [vfat msdos]
    isofs 17376 0 (unused)
    sg 25252 0 (unused)
    sr_mod 11576 0 (unused)
    cdrom 28672 0 [sr_mod]
    ide-scsi 7520 0
    loop 8560 0
    floppy 45952 0
    3c59x 25544 1
    af_packet 13128 0 (unused)

    [7.4.] Loaded driver and hardware information (/proc/ioports, /proc/iomem)

    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
    0213-0213 : isapnp read
    0220-022f : soundblaster
    02f8-02ff : serial(set)
    0330-0333 : MPU-401 UART
    0376-0376 : ide1
    03c0-03df : vga+
    03f6-03f6 : ide0
    03f8-03ff : serial(set)
    0a79-0a79 : isapnp write
    0cf8-0cff : PCI conf1
    4000-403f : Intel Corp. 82371AB/EB/MB PIIX4 ACPI
    5000-501f : Intel Corp. 82371AB/EB/MB PIIX4 ACPI
    6400-641f : Intel Corp. 82371AB/EB/MB PIIX4 USB
    6400-641f : usb-uhci
    6800-687f : 3Com Corporation 3c905C-TX/TX-M [Tornado]
    6800-687f : 00:09.0
    e000-efff : PCI Bus #01
    f000-f00f : Intel Corp. 82371AB/EB/MB PIIX4 IDE
    f000-f007 : ide0
    f008-f00f : ide1

    00000000-0009fbff : System RAM
    0009fc00-0009ffff : reserved
    000a0000-000bffff : Video RAM area
    000c0000-000c7fff : Video ROM
    000c8000-000c87ff : Extension ROM
    000f0000-000fffff : System ROM
    00100000-05ffffff : System RAM
    00100000-0022ba21 : Kernel code
    0022ba22-002a02bf : Kernel data
    a8000000-afffffff : PCI Bus #01
    d8000000-dfffffff : PCI Bus #01
    e0000000-e3ffffff : Intel Corp. 440LX/EX - 82443LX/EX Host bridge
    e4000000-e7ffffff : S3 Inc. ViRGE/DX or /GX
    e8000000-e800007f : 3Com Corporation 3c905C-TX/TX-M [Tornado]
    ffff0000-ffffffff : reserved

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

    00:00.0 Host bridge: Intel Corp. 440LX/EX - 82443LX/EX 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 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 Corp. 440LX/EX - 82443LX/EX 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: 0000e000-0000efff
    Memory behind bridge: d8000000-dfffffff
    Prefetchable memory behind bridge: a8000000-afffffff
    BridgeCtl: Parity+ SERR+ NoISA- VGA- MAbort- >Reset- FastB2B-

    00:07.0 ISA bridge: Intel Corp. 82371AB PIIX4 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: Intel Corp. 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 Corp. 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 11
    Region 4: I/O ports at 6400 [size=32]

    00:07.3 Bridge: Intel Corp. 82371AB PIIX4 ACPI (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-
    Interrupt: pin ? routed to IRQ 9

    00:09.0 Ethernet controller: 3Com Corporation 3c905C-TX [Fast Etherlink] (rev 74)
    Subsystem: 3Com Corporation 3C905C-TX Fast Etherlink for PC Management NIC
    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 (2500ns min, 2500ns max), cache line size 08
    Interrupt: pin A routed to IRQ 10
    Region 0: I/O ports at 6800 [size=128]
    Region 1: Memory at e8000000 (32-bit, non-prefetchable) [size=128]
    Expansion ROM at <unassigned> [disabled] [size=128K]
    Capabilities: [dc] Power Management version 2
    Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0+,D1+,D2+,D3hot+,D3cold-)
    Status: D0 PME-Enable- DSel=0 DScale=2 PME-

    00:0b.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-
    Latency: 64 (1000ns min, 63750ns max)
    Interrupt: pin A routed to IRQ 11
    Region 0: Memory at e4000000 (32-bit, non-prefetchable) [size=64M]
    Expansion ROM at <unassigned> [disabled] [size=64K]

    [7.6.] SCSI information (from /proc/scsi/scsi)

    Attached devices:
    Host: scsi0 Channel: 00 Id: 00 Lun: 00
    Vendor: Model: ATAPI CDROM Rev: 1.20
    Type: CD-ROM ANSI SCSI revision: 0

    [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):

    N/A

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

    Vanilla 2.4.19 plus kmsgdump patches.
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