Re: [RFC 03/16] kgr: initial code

[Jiri Kosina]

On Tue, 20 May 2014, Jiri Slaby wrote:

> Yes, this is a problem I was thinking of in another context yesterday.
> Patching ->read or any other file_openrations which hold state over
> user<->kernel switches may be a potential threat like above. The same as
> in other implementations of live patching IMO. I put that on a TODO
> checklist for creating patches. This has to be investigated manually
> when creating a patch.

Another thing that has to be handled very carefully is patching functions 
which are using self-modifying code (static keys), to make sure that the 
logic is not switched in the new function.

-- 
Jiri Kosina
SUSE Labs
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