On Mon, Jan 08, 2018 at 03:29:42PM -0500, Vince Weaver wrote: > On Mon, 8 Jan 2018, Ingo Molnar wrote: > > > > Note that the page table isolation (PTI) feature has a number of effects on > > perf > > and on NMI handlers, so one of the things to try would be to disable PTI. > > Yes, it seems to be a KPTI issue. > > With KPTI disabled I can fuzz for a few hours, no problems. > > With KPTI enabled the perf_fuzzer on this haswell machine will lock up > within minutes.
I'll go take a look...
