Messages in this thread | | | Date | Mon, 19 Jun 2006 22:12:18 +0200 | From | Michael Opdenacker <> | Subject | Re: Option to clear allocated kernel memory before freeing it? |
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Chase, Dick, > No. Memory is cleared before being mapped to user-space. Memory > that is allocated for use by the kernel is never cleared by default. > To do so would waste valuable time for nothing gained. > > >> Unless I'm missing something, uncleared memory previously used for >> kernel allocations could later be recycled for user allocations, making >> it possible for a user program to access sensitive driver data if it's >> lucky. >> > > Wrong. You are missing a lot. > Oops, I realize I was really missing a lot! Thank you very much for leading me to the right path!
Cheers,
Michael.
-- Michael Opdenacker, Free Electrons Free Embedded Linux Training Materials on http://free-electrons.com/training (More than 1000 pages!)..
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