Re: perf: perf_fuzzer quickly locks up on 4.15-rc7

[Peter Zijlstra]

On Thu, Jan 11, 2018 at 03:40:44PM -0500, Vince Weaver wrote:
> On Thu, 11 Jan 2018, Vince Weaver wrote:
> 
> > Not sure if this info helps, but if I make perf_fuzzer *not* create AUX 
> > mmap() buffers, I'm unable to reproduce the hangs both on core2 and 
> > haswell.
> 
> Confirmed, I can crash the system without the fuzzer, just by doing
> 
> 	perf record --per-thread -e intel_bts// /bin/ls
> 
> on my haswell system.

It makes my IVB very ill, starts spewing RCU stall warnings, but is
otherwise very unresponsive.

Awesome... I'll prod at it when my brain works again.