Yes, except that you're not allowed to tell anyone else what patches Red Hat have applied to the kernel they gave you. So for example, if you encountered a problem with part of the kernel and managed to convince one of the upstream maintainers of that part of the kernel to help you diagnose it, you wouldn't be allowed to tell him or her what changes Red Hat had made that may affect his or her code. That could be an issue.
Red Hat's new policy essentially makes it impossible for third parties to help RHEL customers with any kernel problems they encounter, should Red Hat fail to deal with them itself.
Posted Mar 8, 2011 12:05 UTC (Tue) by anselm (subscriber, #2796)
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Red Hat can't prevent you (or anybody) from running diff against a (small number of) file(s) from the vanilla vs. RHEL kernel sources (from the SRPM). This is infeasible for all of the kernel, but if a problem can be localised to an individual driver or other manageable subsystem, this may be all that is needed for a third party to figure out what changes Red Hat has made to that particular part of the kernel.