Messages in this thread | | | From | KOSAKI Motohiro <> | Date | Mon, 20 Jun 2011 20:23:28 +0900 | Subject | Re: [RFC 2/5 v4] procfs: add hidepid= and gid= mount options |
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2011/6/20 James Morris <jmorris@namei.org>: > On Mon, 20 Jun 2011, Vasiliy Kulikov wrote: > >> > Can you provide evidence that this is a useful feature? e.g. examples of >> > exploits / techniques which would be _usefully_ hampered or blocked. >> >> First, most of these files are usefull in sense of statistics gathering >> and debugging. There is no reason to provide this information to the >> world. >> >> Second, yes, it blocks one source of information used in timing attacks, >> just use reading the counters as more or less precise time measurement >> when actual timing measurements are not precise enough. > > Can you provide concrete examples?
Vasiliy,
I'm now stand aside James. I mean, if we don't understand your usecase clearly. we can't gurantee to don't break the feature in the future. So, we strongly hope to understand it.
Moreover, _now_ I haven't understand your concrete usecase, and then _I_ can't review and be convinced your code. Please please avoid one line answer as far as possible, please provide us more information. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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