Messages in this thread | | | Date | Fri, 27 May 2011 14:37:14 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [RFC][PATCH] Randomize kernel base address on boot |
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On 05/27/2011 11:05 AM, Linus Torvalds wrote: > > You can load the kernel at the same virtual address we always load it, > and/or perhaps shift it up by just small amounts (ie "single pages" > rather than "ten bits worth of pages") > > And then rely on the fact that you mixed up symbols in other ways. >
OK, here is a bat-shit-crazy idea... an all-module kernel where nothing except init code is prelinked at all.
If we could modularize the core code we could have init code load the modules at all kinds of random addresses; they wouldn't even need to be contiguous in memory, and since we'd have full access to the memory layout at that point, we can randomize the **** out of *everything*.
-hpa
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