Re: Option to clear allocated kernel memory before freeing it?

[Michael Opdenacker <michael-lists@free-electrons.com>]

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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