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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?
    +-------------------------------------------------------------------+
    | Linux Memory Management site: http://humbolt.geo.uu.nl/Linux-MM/ |
    | Nederlandse Linux documentatie: http://www.nl.linux.org/ |
    +-------------------------------------------------------------------+


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