[PATCH 1/3] powerpc/mm: Don't alias user region to other regions below PAGE_OFFSET

[Paul Mackerras]

On Fri, Sep 02, 2016 at 05:52:16PM +0530, Aneesh Kumar K.V wrote:
> 
> Hi Paul,
> 
> Really nice catch. Was this found by code analysis or do we have any
> reported issue around this ?

I found it by code analysis.

I haven't been able to find any really bad consequence, beyond leaking
some information about kernel memory.  Can you find any worse
consequence?

Paul.