Re: [Crash-utility] crash enhancements proposal
crash-utility-bounces(a)redhat.com wrote on 05/05/2006 09:06:55 AM:
> For lcrash (lkcdutils) we have a patch, which provides
> functionality to create an elf core dump out of a
> system crash dump. This core dump can
> then be processed with gdb. We already have code to
> include swap devices and files.
>
> Maybe that is also one option, which should be considered
> here.
If I am not wrong you meant, that "lcrash" is able to show user space
stack
backtrace because the dump includes data from swap devices &
files?
Just wondering if you have used "crash" in the same manner?
There exist a patch for an older version of lcrash which implements
the following functionality:
* read in swap files, when you start lcrash. Something like:
> lcrash System.map dump Kerntypes swap1 swap2 ....
The
swapfiles have to be saved of course at boot time
after a system crash.
* implement a core command in lcrash:
> core <process ID of process XY>
This writes an elf
core file for process XY to disk.
After you have the core file, you can use gdb
to analyze the userspace problem:
gdb XY core
Any more questions?
Michael