[PARPORT] Problems with mo drive FUJITSU DYNAMO 640 SD on parport

From: Stefan Allers (Stefan.Allers@gmx.de)
Date: Thu Jun 14 2001 - 07:23:02 EDT

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    Hi,

    I have problems with my mo drive FUJITSU DYNAMO 640 SD which is
    connected to the parport via a Shuttle-Technology adapter (modules are
    ppscsi and epst). When I load the module (modprobe epst) everything
    seems to be ok (see log). I can mount the device without problems
    (mount /dev/sda1 /media/mo). I also can list the contents of the media
    (ls -al /media/mo) but if I want to access a file (cat /media/mo/file) it
    always ends in a segmentation fault (see log).

    However when I do the following there is no segmentation fault:

    mkdir /mo
    cat </dev/sda1 >/mo.image
    mount /mo.image /mo -loop

    This takes a while but works.

    Is there anybody who can help me?

    Stefan Allers

    Other information:

    CPU: Pentium-II 300 MHZ
    Kernel 2.4.4 (SuSE)

    modprobe epst:
    ==============
    Jun 14 11:10:37 linux kernel: ppSCSI 0.92 (0.92) installed
    Jun 14 11:10:37 linux kernel: epst.0: epst 0.92 (0.92), Shuttle EPST at
    0x378 mode 2 (PS/2) dly 1 nice 0 sg 16
    Jun 14 11:10:37 linux kernel: Vendor: FUJITSU Model: M2513EL
    Rev: 0020
    Jun 14 11:10:37 linux kernel: Type: Direct-Access
    ANSI SCSI revision: 02
    Jun 14 11:10:37 linux kernel: Detected scsi removable disk sda at scsi0,
    channel 0, id 2, lun 0
    Jun 14 11:10:37 linux kernel: SCSI device sda: 310352 2048-byte hdwr sectors
    (636 MB)
    Jun 14 11:10:37 linux kernel: sda: Write Protect is off

    mount message:
    ==============
    Jun 14 11:14:50 linux kernel: MSDOS: Hardware sector size is 2048

    kernel log after access to mounted drive:
    =========================================
    Jun 14 11:14:58 linux kernel: Unable to handle kernel NULL pointer
    dereference at virtual address 00000000
    Jun 14 11:14:58 linux kernel: printing eip:
    Jun 14 11:14:58 linux kernel: 00000000
    Jun 14 11:14:58 linux kernel: *pde = 00000000
    Jun 14 11:14:58 linux kernel: Oops: 0000
    Jun 14 11:14:58 linux kernel: CPU: 0
    Jun 14 11:14:58 linux kernel: EIP: 0010:[<00000000>]
    Jun 14 11:14:58 linux kernel: EFLAGS: 00010286
    Jun 14 11:14:58 linux kernel: eax: 00000000 ebx: cd0ce3e0 ecx: 00000400
     edx: cd0ce400
    Jun 14 11:14:58 linux kernel: esi: bfffea08 edi: 00000000 ebp: 00000400
     esp: cd4b9f80
    Jun 14 11:14:58 linux kernel: ds: 0018 es: 0018 ss: 0018
    Jun 14 11:14:58 linux kernel: Process konqueror (pid: 910,
    stackpage=cd4b9000)
    Jun 14 11:14:58 linux kernel: Stack: d499b71d cd0ce3e0 bfffea08 00000400
    cd0ce400 cd0ce3e0 ffffffea c012ad67
    Jun 14 11:14:58 linux kernel: cd0ce3e0 bfffea08 00000400 cd0ce400
    cd4b8000 bfffea08 403ac128 bfffee0c
    Jun 14 11:14:58 linux kernel: c0106b4b 0000000e bfffea08 00000400
    bfffea08 403ac128 bfffee0c 00000003
    Jun 14 11:14:58 linux kernel: Call Trace: [<d499b71d>] [sys_read+143/196]
    [system_call+51/56]
    Jun 14 11:14:58 linux kernel:
    Jun 14 11:14:58 linux kernel: Code: Bad EIP value. 

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