[cip-dev] Features backports

[agustin.benito@codethink.co.uk (Agustin Benito Bethencourt)]

Hi,

as you probably know, the more features we backport, the higher will be 
the maintenance cost overtime so as a strategy, we need to be very 
conservative.

I sent a mail some days ago about the features backported already by 
Linaro for their LSK (Linaro Stable Kernel) for your evaluation. I bring 
today some potential backports related with security features and 
hardware support that has been identified by Ben H.

* UBSAN support:
<https://git.kernel.org/linus/c6d308534aef6c99904bf5862066360ae067abc4>

* Increased user-space ASLR range for ARM:
<https://lwn.net/Articles/667790/>

* Page poisoning on free:
<https://git.kernel.org/linus/8823b1dbc05fab1a8bec275eeae4709257c2661d>,
<https://git.kernel.org/linus/1414c7f4f7d72d138fff35f00151d15749b5beda>

* SLAB/SLUB freelist randomisation

* Hardened usercopy

* Do Members use SLUB? if not, we should take a look at KASAN support 
for SLAB

* drm/tilcdc update? (many bug fixes post-4.4)

* AM33xx RTC support:

<https://git.kernel.org/linus/461932dfb54ebaf7da438fd8b769a01ce97a9360>,
<https://git.kernel.org/linus/b5a553c08bec14a058501df3fa6eb39f63f00a98>


Best Regards
-- 
Agustin Benito Bethencourt
Principal Consultant - FOSS at Codethink
agustin.benito at codethink.co.uk