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Date: Mon, 7 Aug 2017 15:52:31 -0500
From: "Gustavo A. R. Silva" <>
To: Thomas Garnier <>
Cc: Kernel Hardening <>
Subject: Re: I want to help out

Hi Thomas,

On 08/07/2017 10:31 AM, Thomas Garnier wrote:
> Hey Gustavo, welcome!


> That's a lot of changes, thanks for sharing.

I'm glad to help. :)

> You can take a look at this page [1] 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.

 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

If there is already some work in progress and there are some small tasks 
pending to be completed, I'd like to help.

I might need someone to point me out to the work already in place and, 
after reading some code and asking some questions I might be able to 
take it from there.

I have to say that by no means I'm an expert in any of those areas, but 
I'm willing to learn and become a long term contributor.

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.

Thank you!
Gustavo A. R. Silva

> Thanks,
> [1]
> On Sun, Aug 6, 2017 at 9:22 PM, Gustavo A. R. Silva
> <> wrote:
>> Hello everybody,
>> I'm new in the mailing list.
>> I've been working on kernel hardening activities during the last three
>> months
>> I'd be more than happy to dedicate time and help out with any coding
>> activities you may need help with. In particular related to x86 and ARM
>> architectures (that's the hardware I have at hand).
>> Thank you
>> --
>> Gustavo A. R. Silva
>> @embeddedgus

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