Reg crash utility installation

Reg crash utility installation

[SATHISH.J]

Hi,
I installed crash2.6 on my machine. 
When I give the command "crash" from the prompt it says "no debugging
symbols found in /boot/vmlinux2.2.14-12". Why does this message show.

Thanks in advance,

Regs,
sathish

Re: Reg crash utility installation

[Patrick O'Rourke]

SATHISH.J wrote:

> I installed crash2.6 on my machine. 
> When I give the command "crash" from the prompt it says "no debugging
> symbols found in /boot/vmlinux2.2.14-12". Why does this message show.


crash relies on debug info and so it needs access to an uncompressed
vmlinux file which was built using -g.  The following URL offers more
info:

	http://oss.missioncriticallinux.com/projects/crash/usage.php

Pat

-- 
Patrick O'Rourke
orourke@missioncriticallinux.com

Re: Reg kdb utility

[SATHISH.J]

Hi,

I tried to use kdb on my 2.2.14-12 kernel. I was able to compile the file 
/usr/src/linux/arch/i386/kdb/modules/kdbm_vm.c and could get the object
file. When I tried to insert it as a module it givesd the following error
message:

./kdbm_vm.o: kernel-module version mismatch
        ./kdbm_vm.o was compiled for kernel version .2.14-12
        while this kernel is version 2.2.14-12.



Please tell me why this message comes.

Thanks in advance,

Regards,
satish.j

Re: Reg kdb utility

[Balbir Singh]

You need to compile with the correct  kernel headers using the include
path feature -I <path to new headers>

Balbir



On Tue, 3 Jul 2001, SATHISH.J wrote:

|Hi,
|
|I tried to use kdb on my 2.2.14-12 kernel. I was able to compile the file 
|/usr/src/linux/arch/i386/kdb/modules/kdbm_vm.c and could get the object
|file. When I tried to insert it as a module it givesd the following error
|message:
|
|./kdbm_vm.o: kernel-module version mismatch
|        ./kdbm_vm.o was compiled for kernel version .2.14-12
|        while this kernel is version 2.2.14-12.
|
|
|
|Please tell me why this message comes.
|
|Thanks in advance,
|
|Regards,
|satish.j
|
|
|
|
|
|
|
|
|-
|To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
|the body of a message to majordomo@vger.kernel.org
|More majordomo info at  http://vger.kernel.org/majordomo-info.html
|Please read the FAQ at  http://www.tux.org/lkml/
|

Reg char device driver on linux

[SATHISH.J]

Hi,
Sorry for bothering you.

I am trying to learn about linux character device drivers. I was going
through videodev.c. Can someone tell me which all are the devices that
come under video devices and also the ".c" files. Can someone tell me
which driver is the simplest under /usr/src/linux/drivers/char so that I,
as a beginner can understand the driver concept better.

Thanks in advance,
Warm regards,
sathish.j

Reg:flow of system call in linux

[SATHISH.J]

Hi,
Can someone tell me about the flow of system call for eg. from open
wrapper routine to sys_open() function or atleast please suggest me a
book/website
where I can get this info.

Thanks in advance,
sathish.j

Re: Reg:flow of system call in linux

[Alan Cox]

> Can someone tell me about the flow of system call for eg. from open
> wrapper routine to sys_open() function or atleast please suggest me a
> book/website
> where I can get this info.

Userspace open() calls into glibc code
glibc does architecture dependant magic to make a syscall
The kernel syscall code does architecture dependant magic 
The kernel calls sys_open


In the x86 case the magic is basically

Load arguments into the right registers
int 0x80

then the kernel code in arch/i386/kernel/entry.S

Reg System.map file

[SATHISH.J]

Hi,
Does the System.map file contain only the addresses of kernel functions
present at the boot time. What I mean is, suppose I insert a new driver
into the kernel, Is there any way to show its addresses in the System.map
file? Please help me out with this.

Thanks in advance,
Warm regards,
sathish

Re: Reg System.map file

[Keith Owens]

On Mon, 13 Aug 2001 10:52:42 +0530 (IST), 
"SATHISH.J" <sathish.j@tatainfotech.com> wrote:
>Does the System.map file contain only the addresses of kernel functions
>present at the boot time. What I mean is, suppose I insert a new driver
>into the kernel, Is there any way to show its addresses in the System.map
>file? Please help me out with this.

System.map contains addresses of all the external symbols in vmlinux.
It does not contain the address of module symbols because they vary.
If you want a combined map that contains both kernel and module
symbols, use ksymoops -s.  That works best when you save the module
data after each module load and unload.

  man ksymoops
  man insmod, section KSYMOOPS SUPPORT IN MODUTILS.

Reg core dump of KDE-2

[SATHISH.J]

Hi,
I have  installed kde-2 on my linux machine(2.2.14-12 kernel). When
I give startx it goes to KDE screen. When I click on any one of the
applications for eg:-a new terminal or word application, it gives a core
dump and comes out of KDE. Please tell me the reasons for this and a
probable solution so that I need not reinstall the OS.

Thanks in advance,
Warm regards,
sathish.j

Re: Reg core dump of KDE-2

[Ignacio Vazquez-Abrams]

On Tue, 21 Aug 2001, SATHISH.J wrote:

> Hi,
> I have  installed kde-2 on my linux machine(2.2.14-12 kernel). When
> I give startx it goes to KDE screen. When I click on any one of the
> applications for eg:-a new terminal or word application, it gives a core
> dump and comes out of KDE. Please tell me the reasons for this and a
> probable solution so that I need not reinstall the OS.
>
> Thanks in advance,
> Warm regards,
> sathish.j

This mailing list has nothing to do with KDE. You should probably check KDE's
website (http://www.kde.org/) for an e-mail address there that can help you.

-- 
Ignacio Vazquez-Abrams  <ignacio@openservices.net>

command source code

[SATHISH.J]

Hi,
Can someone tell me where I can find the source code for commands. It
would be of great use for me.
Thanks in advance,
Warm regards,
sathish.j

RE: Reg System.map file

[Nitin Dhingra]

Check /proc/ksyms, you will find the addresses of your 
as well as kernel's exported functions.......

Regards,
Nitin

On Mon, 13 Aug 2001 10:52:42 +0530 (IST), 
"SATHISH.J" <sathish.j@tatainfotech.com> wrote:
>Does the System.map file contain only the addresses of kernel functions
>present at the boot time. What I mean is, suppose I insert a new driver
>into the kernel, Is there any way to show its addresses in the System.map
>file? Please help me out with this.