On Sat, 31 Oct 2015, Chris J Arges wrote:

> Makes sense to me. Is there a reason why the sysfs entries are visible
> to non-root users?

Well, kptr_restrict applies only to values printed using '%pK'. So if the 
sysfs handler is using other printk() format string to print the pointer, 
it'll be leaked out (and should eventually be fixed).

Thanks,

-- 
Jiri Kosina
SUSE Labs

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