FreeBSD-main-amd64-test - Build #24796 - Still Unstable

FreeBSD-main-amd64-test - Build #24796 (d9c0e2e16660ecbe33e780821e95508a1d7870b1) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24796/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24796/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24796/console

Status explanation:
"Unstable" - some tests are suspected being broken by the following changes
"Still Unstable" - the failing test cases have not been fixed by these
                   following changes and this is a notification to note that
                   these changes have not been fully tested by the CI system

Change summaries:
(Those commits are likely but not certainly responsible)

d9c0e2e16660ecbe33e780821e95508a1d7870b1 by dim:
Revert "Build clang and other llvm executables as PIE"



The failed test cases:

4 tests failed.
FAILED:  sys.netinet6.test_ip6_output.py.TestIP6OutputMulticast::test_output6_multicast[ff08]

Error Message:
/usr/local/lib/python3.9/multiprocessing/connection.py:383: EOFError

FAILED:  sys.netpfil.common.dummynet.pf_queue

Error Message:
We failed prioritisation 1 times

FAILED:  sys.kern.fdgrowtable_test.oldtables_shared_via_threads

Error Message:
Test case body timed out

FAILED:  bin.ls.ls_tests.v_flag

Error Message:
atf-check failed; see the output of the test for details