Messages in this thread | | | Date | Wed, 10 Nov 2010 22:56:58 -0800 | From | Kees Cook <> | Subject | Re: [Security] proactive defense: using read-only memory, RO/NX modules |
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Hi Ingo,
On Wed, Nov 10, 2010 at 10:04:15AM +0100, Ingo Molnar wrote: > * Kees Cook <kees.cook@canonical.com> wrote: > > Oh, well, yes, that's a good reason. :) Where was this covered? I'd like to help > > get it reproduced and ironed out. > > Matthieu Castet seems to have dusted off those patches and submitted two of them in > this mail: > > Subject: [RFC] reworked NX protection for kernel data > > Matthieu, are you still interested in this topic? > > The original, broken patches were these -tip commits: > > 1e858c081af5: x86, mm: RO/NX protection for loadable kernel modules > 18c60ddc9eff: x86, mm: NX protection for kernel data > c226a2feba21: x86, mm: Set first MB as RW+NX > b29d530510d4: x86, mm: Correcting improper large page preservation > > I reported one of the crashes in: > > Subject: Re: [tip:x86/mm] x86, mm: Set first MB as RW+NX > > on lkml.
Thanks for looking this up!
Can we get 1e858c081af5 and 18c60ddc9eff back in, and then work forward from there?
-Kees
-- Kees Cook Ubuntu Security Team
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