Re: How to go about debuging a system lockup?

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On 16/11/06, Lennart Sorensen <[email protected]> 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 <[email protected]>
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