intel_gpu_abrt: 9: Bad substitution

Hi!

I was looking for a way to kill a GPU process (there was a segfault in the driver and I see my test name show up in the intel-gpu-top list with pid 0) and found the intel_gpu_abrt, which looked like the thing I needed judging by the name.
I tried using it, but no matter what I do I get "Bad substitution". Is this the right tool? If so, how do I use it? If not, is there anything else?