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SubjectRe: perf: fuzzer causes stack going in wrong direction warnings
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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