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Date: Wed, 05 Sep 2012 05:36:00 -0000
Message-ID: <CAK1A=4xJLSJ_Rg+Qdx+HL4GW4zBs4a9pgG-L16Qr+Kz10Qo2jg@mail.gmail.com>
Subject: Re: how to get kernel global data dynamically ?
From: oza Pawandeep <oza.pawandeep@gmail.com>
To: John Smith <horserivers@gmail.com>
Cc: gdb@sourceware.org
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there is a utility called 'crash utility' from redhat
which is capable of debugging live linux kernel space; of course you
can not set breakpoints/watchpoints, but certainly you should be able
to query all kernel symbols.

Regards,
Oza.

On Wed, Sep 5, 2012 at 7:24 AM, John Smith <horserivers@gmail.com> wrote:
> hi,
>
>       I  got  a  segment  fault  when  debug  a  process ,  so  I
> disassemble the code  which   cause  the  fault  ,  and  find  the
> instruction  which  fires  the  fault ,
>
>      this  instruction  is  xlat  ds:(%bx)    , as  you  know , this
> is a  protect-mode  addressing ,so  I  need  to  know  the  base
> address  responding to   this  ds  descript ,
>
>      then  I  could calculate  the  linear  address and  catch  its
> memory data .
>
>
>    but , as you know too , gdb can not tell you the    base address
> responding to   this  ds  descript ,  is anyone have some solutions
> here ?
>
>
> thanks!