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    SubjectRe: Undo aic7xxx changes (now rc7+aic20030603)
    On Tue, 10 Jun 2003 09:51:34 -0400 (EDT)
    Zwane Mwaikambo <zwane@linuxpower.ca> wrote:

    > > Reading around the whole interrupt stuff I came across a very simple idea which
    > > I am going to test right now. See you in some hours ;-)
    >
    > Cool

    Hoho, how about this one:

    ksymoops 2.4.8 on i686 2.4.21-rc7-aic. Options used
    -V (default)
    -k /proc/ksyms (default)
    -l /proc/modules (default)
    -o /lib/modules/2.4.21-rc7-aic/ (default)
    -m /boot/System.map-2.4.21-rc7-aic (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.

    Jun 10 17:50:53 admin kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000b2c
    Jun 10 17:50:53 admin kernel: c0221c37
    Jun 10 17:50:53 admin kernel: *pde = 00000000
    Jun 10 17:50:53 admin kernel: Oops: 0000
    Jun 10 17:50:53 admin kernel: CPU: 0
    Jun 10 17:50:53 admin kernel: EIP: 0010:[st_do_scsi+295/384] Not tainted
    Jun 10 17:50:53 admin kernel: EIP: 0010:[<c0221c37>] Not tainted
    Using defaults from ksymoops -t elf32-i386 -a i386
    Jun 10 17:50:53 admin kernel: EFLAGS: 00010246
    Jun 10 17:50:53 admin kernel: eax: 00000000 ebx: 00000001 ecx: 00000000 edx: c34a0424
    Jun 10 17:50:53 admin kernel: esi: f5f2c180 edi: 00000b00 ebp: 00008090 esp: dead5edc
    Jun 10 17:50:53 admin kernel: ds: 0018 es: 0018 ss: 0018
    Jun 10 17:50:53 admin kernel: Process tar (pid: 4004, stackpage=dead5000)
    Jun 10 17:50:53 admin kernel: Stack: f5f2c180 00000000 c0090000 00008000 c0221a10 00015f90 00000000 dead5f7c
    Jun 10 17:50:53 admin kernel: c34a0400 00000001 00008000 c0223abd 00000000 c34a0400 dead5f40 00008000
    Jun 10 17:50:53 admin kernel: 00000002 00015f90 00000000 00000001 00000000 00000000 c34a04c0 c34a0450
    Jun 10 17:50:53 admin kernel: Call Trace: [st_sleep_done+0/256] [read_tape+269/1024] [scsi_finish_command+152/208] [st_read+1015/1152] [sys_read+155/384]
    Jun 10 17:50:53 admin kernel: Call Trace: [<c0221a10>] [<c0223abd>] [<c01ede38>] [<c02241a7>] [<c0141c0b>]
    Jun 10 17:50:53 admin kernel: [<c010782f>]
    Jun 10 17:50:53 admin kernel: Code: 8b 5f 2c 89 74 24 04 89 3c 24 e8 ea fb ff ff 89 43 1c eb a5


    >>EIP; c0221c37 <st_do_scsi+127/180> <=====

    >>edx; c34a0424 <_end+310e0e4/38547d20>
    >>esi; f5f2c180 <_end+35b99e40/38547d20>
    >>esp; dead5edc <_end+1e743b9c/38547d20>

    Trace; c0221a10 <st_sleep_done+0/100>
    Trace; c0223abd <read_tape+10d/400>
    Trace; c01ede38 <scsi_finish_command+98/d0>
    Trace; c02241a7 <st_read+3f7/480>
    Trace; c0141c0b <sys_read+9b/180>
    Trace; c010782f <system_call+33/38>

    Code; c0221c37 <st_do_scsi+127/180>
    00000000 <_EIP>:
    Code; c0221c37 <st_do_scsi+127/180> <=====
    0: 8b 5f 2c mov 0x2c(%edi),%ebx <=====
    Code; c0221c3a <st_do_scsi+12a/180>
    3: 89 74 24 04 mov %esi,0x4(%esp,1)
    Code; c0221c3e <st_do_scsi+12e/180>
    7: 89 3c 24 mov %edi,(%esp,1)
    Code; c0221c41 <st_do_scsi+131/180>
    a: e8 ea fb ff ff call fffffbf9 <_EIP+0xfffffbf9>
    Code; c0221c46 <st_do_scsi+136/180>
    f: 89 43 1c mov %eax,0x1c(%ebx)
    Code; c0221c49 <st_do_scsi+139/180>
    12: eb a5 jmp ffffffb9 <_EIP+0xffffffb9>


    1 warning issued. Results may not be reliable.

    Anybody able to comment on that?

    Regards,
    Stephan

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