Re: perf: bug in rdpmc/mmap accounting after exec

[Vince Weaver]

On Wed, 2 Aug 2017, Peter Zijlstra wrote:

> On Wed, Jul 26, 2017 at 03:39:01PM -0400, Vince Weaver wrote:
> > In fact, current->mm->context.perf_rdpmc_allowed goes negative which seems
> > like it shouldn't happen?

>
> Good find that...
> 
> The below seems to fix that for me.

yes, I can confirm that with this patch all of the various PAPI and 
perf_event_tests pass on my test system.

Thanks,

Vince