[SOLVED] Debugging kernel, How ?

[Raady Here]

Hi,

If I was given a crashed or hanged up kernel , I want to analyse what had happened ?

How to start debugging the kernel ? Is there any link related so that I can understand better or any one can send steps and procedure to debug a kernel.

Regards,
Raady.

 

[kam1787]

you should get a memory dump...................the rest is art and skill and hard work

 

[lollobrigido]

As first think, you should understand what crash your kernel. Is it a vanilla one? Are you writing a module?
Before tol debug a kernel isfundemental to know what is the issue.
Try dmesg and or syslog.
To debug kernel is very difficults and is impossible to be described as a linear sequence of steps.

Lollo

 

[Raady Here]

As first think, you should understand what crash your kernel. Is it a vanilla one? Are you writing a module?
Before tol debug a kernel isfundemental to know what is the issue.
Try dmesg and or syslog.
To debug kernel is very difficults and is impossible to be described as a linear sequence of steps.

Lollo

My teacher had given me a crashed kernel zimage and asked me to debug.
I want to know where to start it ?

I have seen some in searching it could be done using backtrace / ltrace/strace. But I couldn't find any documentation regarding that , using how and debug.
I want to know any links which has steps to follow.

Regards,
Raady.

 

[lollobrigido]

What do you mean with 'crashed kernel zimage'... a core dump?
If you have yes ,you have a snapshot of the crash situation and you can debug it by gdb, too. I hope for you that the kernel has bee compiled with debug options enabled

Lollo

 

[Raady Here]

what are the step to follow to debug using gdb ?

 

[Raady Here]

Here is a book I googled it. It explains wellView attachment www.dedoimedo.com-crash-book.pdf

 

[campbeelld]

As first think, you should understand what crash your kernel. Is it a vanilla one? Are you writing a module?
Before tol debug a kernel isfundemental to know what is the issue.
Try dmesg and or syslog.
To debug kernel is very difficults and is impossible to be described as a linear sequence of steps.



**broken link removed**
**broken link removed**