Date: Mon, 7 Aug 2017 14:42:23 -0700 From: Kees Cook <keescook@...omium.org> To: "Gustavo A. R. Silva" <gustavo@...eddedor.com> Cc: Thomas Garnier <thgarnie@...gle.com>, Kernel Hardening <kernel-hardening@...ts.openwall.com> Subject: Re: I want to help out Welcome to the list! On Mon, Aug 7, 2017 at 1:52 PM, Gustavo A. R. Silva <gustavo@...eddedor.com> wrote: > On 08/07/2017 10:31 AM, Thomas Garnier wrote: >> You can take a look at this page  to get an idea on things to do. >> You can also look at the difference patches coming and going on the >> mailing list to see if anything interest you. >> >> Anything in particular you wanted to prototype? >> > > I'm interested in mitigation efforts towards control flow infection, as > function pointer poisoning for both .init_array (I know there is some > ongoing work here) and .fini_array. I'd be curious to hear more about this work. > From the TODO list I think the following tasks are interesting: > > * Split thread_info off of kernel stack. > * Move kernel stack to vmap area. > * Implement kernel relocation and KASLR for ARM All three of these are needed on 32-bit arm. The last is a tricky one, since kernel relocation is needed before KASLR can happen on ARM. > If there is already some work in progress and there are some small tasks > pending to be completed, I'd like to help. More testing on arm64 VMAP_STACK would be great, if you have hardware available. > Recently, I've been using Coccinelle to constify structures, and fixing a > variety of Coverity issues (API usage errors, NULL pointer dereferences, > control flow and code maintainability issues, etc..). I'm also using > Coccinelle to identify lock/unlock issues. This is good work to be getting done too! -Kees -- Kees Cook Pixel Security
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