On Tue, 2 Oct 2012, Kees Cook wrote:

> In the paranoid case of sysctl kernel.kptr_restrict=2, mask the kernel
> virtual addresses in /proc/vmallocinfo too.
> 
> Reported-by: Brad Spengler <[email protected]>
> Signed-off-by: Kees Cook <[email protected]>

/proc/vmallocinfo is S_IRUSR, not S_IRUGO, so exactly what are you trying 
to protect?
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