pkeys on POWER: Access rights not reset on execve

[Florian Weimer]

On 05/19/2018 03:19 AM, Ram Pai wrote:

>> New AMR value (PID 112291, before execl): 0x0c00000000000000
>> AMR (PID 112291): 0x0c00000000000000

The issue is here.  The second line is after the execl (printed from the 
start of main), and the AMR value is not reset to zero.

>> Allocated key (PID 112291): 2
>>
>> I think this is a real bug and needs to be fixed even if the
>> defaults are kept as-is (see the other thread).
> 
> The issue you may be talking about here is that  --
> 
> "when you set the AMR register to 0xffffffffffffffff, it
> just sets it to 0x0c00000000000000."
> 
> To me it looks like, exec/fork are not related to the issue.
> Or are they also somehow connected to the issue?

Yes, this is the other issue.  It is not really important here.

Thanks,
Florian