On Sat, Feb 3, 2018 at 2:57 PM, Igor Stoppa [off-list ref] wrote:

quoted

quoted

On Thu, 25 Jan 2018, Matthew Wilcox wrote:

quoted

quoted

quoted

It's worth having a discussion about whether we want the pmalloc API
or whether we want a slab-based API.

I'd love to have some feedback specifically about the API.

I have also some idea about userspace and how to extend the pmalloc
concept to it:

http://www.openwall.com/lists/kernel-hardening/2018/01/30/20

I'll be AFK intermittently for about 2 weeks, so i might not be able to
reply immediately, but from my perspective this would be just the
beginning of a broader hardening of both kernel and userspace that I'd
like to pursue.

--
igor

Regarding the notion of validated protected memory, is there a method
by which the resulting checksum could be used in a lookup
table/function to resolve the location of the protected data?
Effectively a hash table of protected allocations, with a benefit of
dedup since any data matching the same key would be the same data
(multiple identical cred structs being pushed around). Should leave
the resolver address/csum in recent memory to check against, right?

-- 
Boris Lukashev
Systems Architect
Semper Victus
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