On Fri, 25 Jan 2019, Ravi Bangoria wrote: > I'm seeing a system crash while running perf_fuzzer with upstream kernel > on an Intel machine. I hit the crash twice (out of which I don't have log > of first crash so don't know if the reason is same for both the crashes). > I've attached my .config with the mail. > type = PERF_TYPE_HARDWARE;
> ======== > > And, I'm running fuzzer in a loop with *root*. (Let me know if running > as root is harmful ;-) ). There's a known issue related to Intel BTS events that you can trigger with the perf_fuzzer, even as a normal user. I reported it a few months ago but I don't think it ever got resolved. The traces you get look similar to some that you posted. It's hard to track down as it doesn't seem to be a simple issue, but rather it looks like the BTS event handling is stomping over memory it shouldn't somehow. Vince
