Re: [Crash-utility] crash enhancements proposal

On Fri, May 05, 2006 at 09:34:39AM +0200, Michael Holzheu wrote: > 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? Thanks, I got it now. But IMHO this functionality more looks like part of

crash dumping mechanism than crash analysis tool. In anycase it should be useful.