Failing tests on deb9/ubuntu_18_04 (T2363a/b)

Unexpected failures:
   /builds/ghc/ghc/tmp/ghctest-bzqrob0c/test   spaces/testsuite/tests/bytecode/T24634/T24634a.run  T24634a [bad exit code (2)] (normal)
   /builds/ghc/ghc/tmp/ghctest-bzqrob0c/test   spaces/testsuite/tests/bytecode/T24634/T24634b.run  T24634b [bad exit code (2)] (normal)

error message:

/usr/bin/ld.gold: error: /tmp/ghc161992_0/ghc_11.o: requires dynamic R_X86_64_PC32 reloc against 'say_hello' which may overflow at runtime; recompile with -fPIC
collect2: error: ld returned 1 exit status
<no location info>: error:
    `gcc' failed in phase `Linker'. (Exit code: 1)

Job: https://gitlab.haskell.org/ghc/ghc/-/jobs/1966411

Reproduce with

./ghc-docker-jobs.sh nightly-x86_64-linux-ubuntu18_04-validate aaab3d10675eb0090ac60dc81e524231ff706019
... enter docker container
./run_script

Introduced by 821d0a9a

cc @torsten.schmits