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SubjectRe: [PATCH] msr v3 available
On Thu, 28 Jan 1999, Albert D. Cahalan wrote:
> Richard Gooch writes:
>
> > Hi, all. Version 3 of my msr patch is now available from:
> ...
> > - Included patch which adds an ioctl() on /proc/<pid>/mem for
> > translating virtual to physical addresses
>
> As you've been told before, this is a security hole.

> This gets very serious when Linux allows a limited number of
> locked pages for each normal user.

The obvious fix is to only make this information available
to root, or install a sysctl switch where you can choose
whether your users have the capability or not.

The facility itself is important enough to not implement.
Page colouring _does_ make a difference so we need to work
on that for 2.3. In order to do that, we will need this
measuring tool...

Rik -- If a Microsoft product fails, who do you sue?
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| Linux Memory Management site: http://humbolt.geo.uu.nl/Linux-MM/ |
| Nederlandse Linux documentatie: http://www.nl.linux.org/ |
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