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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
