I think this is an annoying comment to here, but it means there’s an an instruction it doesn’t know how to process. In SE mode the error handling is very unhelpful in telling you what that instruction actually is. I’m almost certain in this case your compilation is including some ISA extension we don’t support. I’d strongly advise trying to use FS mode as you’ll get better error handling there.
In addition, i’d strongly recommend using the stdlib to do this kind of work. An example of using SPEC 2017 in FS mode with the stdlib can be found here: configs/example/gem5_library/x86-spec-cpu2017-benchmarks.py. The scripts you are using are deprecated and will be removed in a future release of gem5.
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