Inconsistent memory consumption reported during profiling

Summary

See !4585 (comment 341910)

Steps to reproduce

Run https://github.com/l29ah/hyborg --verbose --dry-run create --progress foo::bar /usr/src/linux/* +RTS -M500M -hC -l -L500 -N

Expected behavior

The profile detailing total memory consumption (it terminates at 500MB), not just 50MB.

Environment

• GHC version used: ghc-9.2.0.20210520

Optional:

• Operating System: GNU/Linux
• System Architecture: amd64