Re: [RFC][PATCH 0/3] variuos perf fixes

[Peter Zijlstra]

On Sun, Sep 13, 2015 at 07:10:56PM -0400, Vince Weaver wrote:
> On Thu, 10 Sep 2015, Peter Zijlstra wrote:
> 
> > Vince reported some fail here:
> > 
> >   lkml.kernel.org/r/alpine.DEB.2.20.1509021227380.32729@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> > 
> > These patches are the result of me trying to fix it.
> > 
> > Compile tested only, I'll try them after a sleep..
> 
> Sorry for the delay testing, your e-mails continue being sent to SPAM by 
> gmail for some reason.
> 
> I patched up a 4.3-rc1 system with the patches, and pretty much my 
> *entire* perf_event test suite causes kernel oopses.
> 
> This is on an AMD a10 system.
> 
> [ 1564.442224] BUG: unable to handle kernel NULL pointer dereference at 00000000000001e8

Yeah, I really should just not set out patches when I'm that tired.

What's worse, I already fixed this splat once, but forgot to copy it
over to the right machine etc..

Total fail.
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