Re: [Crash-utility] mod -S and debuginfo kernel rpm
Am Dienstag, den 21.04.2009, 09:05 -0400 schrieb Dave Anderson:
----- "Michael Holzheu" <holzheu(a)linux.vnet.ibm.com>
wrote:
> Hi,
>
> The kernel debuginfo rpms (e.g. kernel-debuginfo-xxx.s390x.rpm) > provide
> kernel modules that contain debug sections in order to access the > data
> structures with tools like crash. The kernel modules are named
"<module_name>.ko.debug".
>
> The mod -S command in crash does not recognize the ".debug" files. Is
> that by intention? What is the recommended way to load all the debug
> information?
That is by intention. The argument to the "mod" command should be
the stripped "<module_name>.ko" file. When loading that file, the
embedded link to the "<module_name>.ko.debug" file found in the
stripped "<module_name>.ko" file should be recognized and handled
internally by the embedded gdb module.
From where gets gdb this link? Is it somewhere stored in the ELF
module
file?
What I want to do is to unpack the kernel rpm and kernel debuginfo rpm
to my local directory and then load the modules with "mod -S"
In my local directory I have lib/modules/2.6.18-128.el5/ with the kernel
modules and usr/lib/debug/lib/modules/2.6.18-128.el5/ with the .debug
files.
When I use "mod -S lib/modules/2.6.18-128.el5" the debug information
seems not to be loaded.
Michael