pkeys on POWER: Access rights not reset on execve

[Florian Weimer]

On 06/11/2018 10:08 PM, Ram Pai wrote:
> Ok. try this patch. This patch is on top of the 5 patches that I had
> sent last week i.e  "[PATCH  0/5] powerpc/pkeys: fixes to pkeys"
> 
> The following is a draft patch though to check if it meets your
> expectations.
> 
> commit fe53b5fe2dcb3139ea27ade3ae7cbbe43c4af3be
> Author: Ram Pai<linuxram at us.ibm.com>
> Date:   Mon Jun 11 14:57:34 2018 -0500
> 
>      powerpc/pkeys: Deny read/write/execute by default

With this patch, my existing misc/tst-pkey test in glibc passes.  The 
in-tree version still has some incorrect assumptions on implementation 
behavior, but those are test bugs.  The kernel behavior with your patch 
look good to me.  Thanks.

Florian