Re: oops in ioapic_write_entry

From: Ingo Molnar
Date: Wed Aug 04 2010 - 05:27:24 EST

* Yinghai Lu <yinghai@xxxxxxxxxx> wrote:

> On 08/03/2010 02:38 PM, Eric W. Biederman wrote:
> >
> > A clean solution would be to scrub the input from the MP table before
> > we attempt to use of it, instead of scrubbing the data as we use in
> > code paths like pin_2_irq. Just touching pin_2_irq is certainly an
> > incomplete solution because you have not resolved if the pins should
> > be edge or level triggered, and what polarity we should be sampling
> > them at.
> >
> > Until I see a plausible scenario where not handling buggy MP tables
> > exactly as we have done in the past I don't see hacks like you
> > are proposing making much sense at all.
> ok, how about this one?
> it will try to add entries to mp_irqs[] with some checking.

Yep, more sanity testing of BIOS data is welcome.

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