Re: [patch 04/09] x86_64: avoid SMP boot up race

[Chris Wright]

* Horms (horms@xxxxxxxxxxxx) wrote:
> I'm wondering if anyone could comment on if this could
> be conceived as a security bug. My initial instinct was
> yes, but on further considertation I can't conceive
> a way it could be exploited, well not by anyone
> who couldn't DoS the box in any number of other ways,
> including shutting it down.

That code is run early during boot up when bringing online a cpu.
If you can control this, you own the box.
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