Re: gdb for kernel debugging

["lk" <linux_kernel@xxxxxxxxx>]

the image vmlinuz is in  compressed form ..
it can't be directly used for debugging with gdb...
instead go for vmlinux ..
it'll be in ur usr/src/linux-*/
as we have enabled debugging in the config...
we'll get a huge vmlinux...

start gdb as >>
gdb /linux-*/vmlinux  /proc/kcore

regards
lk

----- Original Message ----- 
From: "Vasu S" <vasu.ss@xxxxxxxxx>
To: <kernelnewbies@xxxxxxxxxxxx>
Sent: Thursday, May 05, 2005 7:23 AM
Subject: gdb for kernel debugging


> Hi all,
>
> I am trying to use gdb for debugging kernel. My intention is just to
> go thru different kernel data structures.
> I am getting the following error.
>
> #gdb /boot/vmlinuz-2.6.5-1-debug.358 /proc/kcore
> GNU gdb Red Hat Linux (6.0post-0.20040223.19rh)
> Copyright 2004 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you
are
> welcome to change it and/or distribute copies of it under certain
conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for
details.
> This GDB was configured as
> "i386-redhat-linux-gnu"..."/boot/vmlinuz-2.6.5-1-debug.358": not in
> executable format: File format not recognized
>  /proc/kcore: Operation not permitted.
> (gdb) q
>
> ----------
> I have compiled the kernel with  CONFIG_DEBUG_INFO set to y.  Even
> googling the error didnt help.
> Please tell me what could be the problem.  Am I missing something?
>
> Thanks for paying attention.
> Vasu
>
> --
> Kernelnewbies: Help each other learn about the Linux kernel.
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>
>



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