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    SubjectOops with 2.2.13pre17 and ide-scsi
    I was switching between ide-cd and ide-scsi when this happened.
    Previously I was running cdrecord which I killed with Control-C.
    First part of the kernel log:


    scsi0 : SCSI host adapter emulation for IDE ATAPI devices
    scsi : 1 host.
    Vendor: MATSHITA Model: CD-R CW-7582 Rev: 1.05
    Type: CD-ROM ANSI SCSI revision: 02
    Vendor: MATSHITA Model: CD-R CW-7582 Rev: 1.05
    Type: CD-ROM ANSI SCSI revision: 02
    Vendor: MATSHITA Model: CD-R CW-7582 Rev: 1.05
    Type: CD-ROM ANSI SCSI revision: 02
    Vendor: MATSHITA Model: CD-R CW-7582 Rev: 1.05
    Type: CD-ROM ANSI SCSI revision: 02
    Vendor: MATSHITA Model: CD-R CW-7582 Rev: 1.05
    Type: CD-ROM ANSI SCSI revision: 02
    Vendor: MATSHITA Model: CD-R CW-7582 Rev: 1.05
    Type: CD-ROM ANSI SCSI revision: 02
    Vendor: MATSHITA Model: CD-R CW-7582 Rev: 1.05
    Type: CD-ROM ANSI SCSI revision: 02
    Vendor: MATSHITA Model: CD-R CW-7582 Rev: 1.05
    Type: CD-ROM ANSI SCSI revision: 02
    SCSI device not inactive - rq_status=1, target=0, pid=122937, state=4099, owner=258.
    Device busy???
    hdd: cleanup_module() called while still busy
    Unable to handle kernel paging request at virtual address c886799c
    current->tss.cr3 = 04f58000, %cr3 = 04f58000
    *pde = 07c9c063
    *pte = 00000000
    Oops: 0000
    ...

    Here is the output from ksymoops:


    ksymoops 0.7c on i586 2.2.13pre17. Options used
    -V (default)
    -k /proc/ksyms (default)
    -l /proc/modules (default)
    -o /lib/modules/2.2.13pre17/ (default)
    -m /boot/System.map-2.2.13pre17 (specified)

    Warning (compare_ksyms_lsmod): module 3c59x is in lsmod but not in ksyms, probably no symbols exported
    Warning (compare_ksyms_lsmod): module isofs is in lsmod but not in ksyms, probably no symbols exported
    Unable to handle kernel paging request at virtual address c886799c
    current->tss.cr3 = 04f58000, %cr3 = 04f58000
    *pde = 07c9c063
    Oops: 0000
    CPU: 0
    EIP: 0010:[<c0172dba>]
    Using defaults from ksymoops -t elf32-i386 -a i386
    EFLAGS: 00010297
    eax: c5243f64 ebx: c01f8cf0 ecx: c01f8c64 edx: c8867980
    esi: c5b74660 edi: c5243f64 ebp: c5243fbc esp: c5243efc
    ds: 0018 es: 0018 ss: 0018
    Process mount (pid: 17124, process nr: 52, stackpage=c5243000)
    Stack: c01f8cf0 c019ffad c5241640 c0ed000f 00000000 c01dd960 00000000 40013000
    c4f58400 c01292a1 c5b74660 c5243f64 00001000 c7004e40 c5242000 c0ed000f
    0805b598 c173f7a0 400e1884 00000000 c5b74660 c5243f64 00000000 c3fa3a00
    Call Trace: [<c019ffad>] [<c01292a1>] [<c886440c>] [<c01092b8>]
    Code: 8b 42 1c ff d0 83 c4 10 89 f6 5b 5e 83 c4 14 c3 89 f6 83 ec

    >>EIP; c0172dba <ide_open+e2/f4> <=====
    Trace; c019ffad <tvecs+272d/3300>
    Trace; c01292a1 <sys_mount+1e5/2cc>
    Trace; c886440c <[scsi_mod]scsi_mlqueue_remove_lock+5c0c/d520>
    Trace; c01092b8 <system_call+34/38>
    Code; c0172dba <ide_open+e2/f4>
    00000000 <_EIP>:
    Code; c0172dba <ide_open+e2/f4> <=====
    0: 8b 42 1c movl 0x1c(%edx),%eax <=====
    Code; c0172dbd <ide_open+e5/f4>
    3: ff d0 call *%eax
    Code; c0172dbf <ide_open+e7/f4>
    5: 83 c4 10 addl $0x10,%esp
    Code; c0172dc2 <ide_open+ea/f4>
    8: 89 f6 movl %esi,%esi
    Code; c0172dc4 <ide_open+ec/f4>
    a: 5b popl %ebx
    Code; c0172dc5 <ide_open+ed/f4>
    b: 5e popl %esi
    Code; c0172dc6 <ide_open+ee/f4>
    c: 83 c4 14 addl $0x14,%esp
    Code; c0172dc9 <ide_open+f1/f4>
    f: c3 ret
    Code; c0172dca <ide_open+f2/f4>
    10: 89 f6 movl %esi,%esi
    Code; c0172dcc <ide_release+0/58>
    12: 83 ec 00 subl $0x0,%esp

    Unable to handle kernel paging request at virtual address c886799c
    current->tss.cr3 = 04f58000, %cr3 = 04f58000
    *pde = 07c9c063
    Oops: 0000
    CPU: 0
    EIP: 0010:[<c0172dba>]
    EFLAGS: 00010293
    eax: c3249240 ebx: c01f8cf0 ecx: c01f8c64 edx: c8867980
    esi: c5b74660 edi: c5b74660 ebp: c3fa3a00 esp: c5243f0c
    ds: 0018 es: 0018 ss: 0018
    Process cdeject (pid: 17127, process nr: 52, stackpage=c5243000)
    Stack: c01f8cf0 c019ffad 00000000 c3249240 c4f58400 c012c321 c5b74660 00000004
    00000001 c0125a03 c5b74660 c3249240 08048dc0 bffffb58 c3249240 c3fa3a00
    c5b74660 000080a4 00000003 08048dc0 bffffb58 c012492c c5b74660 c3249240
    Call Trace: [<c019ffad>] [<c012c321>] [<c0125a03>] [<c012492c>] [<c0124885>] [<c0124b1b>] [<c0124b02>]
    [<c01093bd>] [<c01092b8>]
    Code: 8b 42 1c ff d0 83 c4 10 89 f6 5b 5e 83 c4 14 c3 89 f6 83 ec

    >>EIP; c0172dba <ide_open+e2/f4> <=====
    Trace; c019ffad <tvecs+272d/3300>
    Trace; c012c321 <open_namei+1d5/308>
    Trace; c0125a03 <blkdev_open+3b/4c>
    Trace; c012492c <filp_open+b8/108>
    Trace; c0124885 <filp_open+11/108>
    Trace; c0124b1b <sys_open+3f/a0>
    Trace; c0124b02 <sys_open+26/a0>
    Trace; c01093bd <error_code+2d/34>
    Trace; c01092b8 <system_call+34/38>
    Code; c0172dba <ide_open+e2/f4>
    00000000 <_EIP>:
    Code; c0172dba <ide_open+e2/f4> <=====
    0: 8b 42 1c movl 0x1c(%edx),%eax <=====
    Code; c0172dbd <ide_open+e5/f4>
    3: ff d0 call *%eax
    Code; c0172dbf <ide_open+e7/f4>
    5: 83 c4 10 addl $0x10,%esp
    Code; c0172dc2 <ide_open+ea/f4>
    8: 89 f6 movl %esi,%esi
    Code; c0172dc4 <ide_open+ec/f4>
    a: 5b popl %ebx
    Code; c0172dc5 <ide_open+ed/f4>
    b: 5e popl %esi
    Code; c0172dc6 <ide_open+ee/f4>
    c: 83 c4 14 addl $0x14,%esp
    Code; c0172dc9 <ide_open+f1/f4>
    f: c3 ret
    Code; c0172dca <ide_open+f2/f4>
    10: 89 f6 movl %esi,%esi
    Code; c0172dcc <ide_release+0/58>
    12: 83 ec 00 subl $0x0,%esp


    2 warnings issued. Results may not be reliable.

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