docker-slim-sensor and traced executable never finish running on armhf

[ralight]

Expected Behavior

When I run docker-slim build ... on an armhf host (Raspberry Pi in this case)... it works :)

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Actual Behavior

I see that docker-slim-sensor and the executable being traced take up a large percentage of CPU time, and never finish executing. In my example one of the first processes to run is openssl rand 32 which takes about 3ms on my Pi when running normally. I killed it after about 5 hours of high cpu use when running under docker slim.

I've tested the binaries for 1.30.0 and they are fine, the problem is present in 1.32.0. I didn't test 1.31.0 because there weren't binaries available.

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Steps to Reproduce the Problem

This small image demonstrates the problem for me:

docker-slim build ralight/slimtest:latest --show-blogs --show-clogs --http-probe=false

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Specifications

• Platform: Raspbian GNU/Linux 10 (buster) on a Raspberry Pi 4.