[bug] stack protector panics on v4.10-rc1+

[Benjamin Herrenschmidt]

On Thu, 2017-01-26 at 18:05 +1100, Benjamin Herrenschmidt wrote:
> On Wed, 2017-01-25 at 09:24 +0530, Balbir Singh wrote:
> > That makes sense. We then wait for the right gcc version? I guess
> > we
> > also
> > push for per-task gaurd value as opposed to a global one?
> 
> I'm thinking per-cpu will be easier as r13 is readily available as
> PACA.

Actually it has to be per-task ... so we'll have to put it in the PACA
and context switch the value in there.

Cheers,
Ben.