On Friday 03 October 2008 04:43:00 Larry Finger wrote:
> Christian Lamparter wrote:
> Oct 2 17:22:52 larrylap kernel: BUG: unable to handle kernel NULL
> pointer dereference at 0000000000000000
[...]
> [...] Tainted: GM
> Note, the "tainted" flag is false. No closed-source drivers have been
> loaded.
>
more about the flags can be found in Documentation/oops-tracing.txt:
1: 'G' if all modules loaded have a GPL or compatible license, 'P' if
any proprietary module has been loaded. Modules without a
MODULE_LICENSE or with a MODULE_LICENSE that is not recognised by
insmod as GPL compatible are assumed to be proprietary.
[...]
5: 'M' if any processor has reported a Machine Check Exception,
' ' if no Machine Check Exceptions have occurred.
so:
- the "G" flag is perfectly OK! (P would be the "closed-source" drivers)
- however, the "M"(CE) flag is worryingly. The question is, if p54 causes it, or not?
As far as I know, when a MCE gets logged a short message should pop up
in the kernel's log and next you'll need extra tools like mcelog to see what's
going wrong.
Regards,
Chr
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