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    Subject[OOPS] with ns558 and usb-ohci
    I can reproducibly cause a kernel oops on linux-2.4.0-test6.  First, I
    modprobe usb-ohci; this works fine, and detects my USB controller.
    Then, I modprobe for ns558; this causes insmod to fail with an
    "Operation not permitted" error. After this, attempting to rmmod
    usb-ohci causes rmmod to segfault, and the attached kernel oops to
    appear in /var/log/messages. I am unsure if any other module
    combinations cause this. This bug has been around since at least

    Steven Walter

    My grandfather invented Cliff's Notes. It all started back in 1912...
    well, to make a long story short...
    -- Stephen Wright
    ksymoops 2.3.4 on i586 2.4.0-test6. Options used
    -V (default)
    -k /proc/ksyms (default)
    -l /proc/modules (default)
    -o /lib/modules/2.4.0-test6/ (default)
    -m /boot/ (specified)

    Warning (compare_ksyms_lsmod): module usb-ohci is in lsmod but not in ksyms, probably no symbols exported
    Unable to handle kernel paging request at virtual address c482a844
    *pde = 03d9f063
    Oops: 0002
    CPU: 0
    EIP: 0010:[pci_unregister_driver+11/76]
    EFLAGS: 00010282
    eax: c482a840 ebx: c4823000 ecx: c020f148 edx: c021e8d0
    esi: c4826940 edi: 00000000 ebp: bfffeb34 esp: c0859f88
    ds: 0018 es: 0018 ss: 0018
    Process rmmod (pid: 2139, stackpage=c0859000)
    Stack: c4823000 c4823000 c482619e c4826940 c011a00b c4823000 fffffff0 c07f9000
    c01194d8 c4823000 00000000 c0858000 08055d6c 00000001 c010a493 bffffc9b
    00000028 00000006 08055d6c 00000001 bfffeb34 00000081 0000002b 0000002b
    Call Trace: [<c4823000>] [<c4823000>] [<c482619e>] [<c4826940>] [free_module+27/156] [<c4823000>] [sys_delete_module+260/436]
    [<c4823000>] [system_call+51/64]
    Code: 89 50 04 89 02 8b 1d c8 e8 21 c0 81 fb c8 e8 21 c0 74 29 8d
    Using defaults from ksymoops -t elf32-i386 -a i386

    Trace; c4823000 <[usbcore]__kstrtab_usb_bulk_msg+1c73/6c73>
    Trace; c4823000 <[usbcore]__kstrtab_usb_bulk_msg+1c73/6c73>
    Trace; c482619e <[usbcore]__kstrtab_usb_bulk_msg+4e11/6c73>
    Trace; c4826940 <[usbcore]__kstrtab_usb_bulk_msg+55b3/6c73>
    Trace; c4823000 <[usbcore]__kstrtab_usb_bulk_msg+1c73/6c73>
    Code; 00000000 Before first symbol
    00000000 <_EIP>:
    Code; 00000000 Before first symbol
    0: 89 50 04 mov %edx,0x4(%eax)
    Code; 00000003 Before first symbol
    3: 89 02 mov %eax,(%edx)
    Code; 00000005 Before first symbol
    5: 8b 1d c8 e8 21 c0 mov 0xc021e8c8,%ebx
    Code; 0000000b Before first symbol
    b: 81 fb c8 e8 21 c0 cmp $0xc021e8c8,%ebx
    Code; 00000011 Before first symbol
    11: 74 29 je 3c <_EIP+0x3c> 0000003c Before first symbol
    Code; 00000013 Before first symbol
    13: 8d 00 lea (%eax),%eax

    1 warning issued. Results may not be reliable.
    [unhandled content-type:application/pgp-signature]
     \ /
      Last update: 2005-03-22 13:58    [W:0.020 / U:1.368 seconds]
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