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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