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SubjectRe: How to go about debuging a system lockup?
On 16/11/06, Lennart Sorensen <lsorense@csclub.uwaterloo.ca> wrote:
> On Thu, Nov 16, 2006 at 09:49:06PM +0100, Jesper Juhl wrote:
...
> > - You could also try kdb (http://oss.sgi.com/projects/kdb/) or kgdb
> > (http://kgdb.linsyssoft.com/). That might help you pinpoint the
> > failure.
>
> Can I run that remotely somehow? I never really looked at kdb or kgdb
> before.
>
Yes you can. kgdb is run on a separate machine from the one you are debugging.

> > - If you have (or can identify) an older, working, kernel version and
> > you are confident that you can reproduce the problem reliably, then
> > doing a git bisection search starting with your newest "known good"
> > and oldest "known bad" kernel versions, should help you pinpoint the
> > commit causing the breakage.
>
> I don't know of a good version yet. I so far don't know if there ever
> was one. This could even be a bug in the PCI hardware, or the way the
> BIOS on this system on a board configured the PCI controller. Maybe I
> should go back and try a 2.4 kernel.
>
Or just try a few random older 2.6 kernels like 2.6.14, 2.6.9,
2.6.whatever (of course it needs to be a version that git knows
about).


--
Jesper Juhl <jesper.juhl@gmail.com>
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