Messages in this thread | | | From | Vince Weaver <> | Date | Fri, 4 May 2018 13:00:27 -0400 (EDT) | Subject | Re: perf: fuzzer causes stack going in wrong direction warnings |
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On Fri, 4 May 2018, Josh Poimboeuf wrote:
> Also, any tips for reproducing this locally? I cloned the perf fuzzer > github. Is it as simple as just "make" and "./run_tests.sh"?
run_tests only runs the perf_event regressiong tests.
To run the fuzzer, enter the "fuzzer" directory and either run "./fast_repro98.sh" which will run the fuzzer repeatedly, or you can instead just run ./perf_fuzzer but that sometimes eventually errors out if it manages to get stuck in a signal storm.
While running on haswell and skylake machines the WARNINGs trigger fairly quickly (within minutes usually).
You might also encounter a handful of other known kernel warnings which I've reported in the past and usually just ignore.
Vince
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