+++ Jiri Kosina [01/11/15 10:07 +0100]:
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).
Hm, I think the func.n solution might be a good temporary fix for now.
Even if we do go with func@addr and use the '%pK' format specifier we
will run into the same problem at kptr_restrict == 2.
Jessica
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