FreeBSD-main-amd64-test - Build #23216 - Still Unstable

FreeBSD-main-amd64-test - Build #23216 (c16c4ea6d399332d4a023df6e423be61fdb875a5) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/23216/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/23216/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/23216/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)

c6b3f47fedd3f94f74cc4f7c40761b1d0e777f17 by jhb:
libpmc: Use LIB_CXX instead of explicit LDADD to link a C++ library.

2ecbbcc7cabdc0147e54ffa90c90efcc33afadd8 by andrew:
arm64: extend ESR/SPSR registers to 64b

f4036a92346e9f7c70a9db88352f172e198e3402 by andrew:
arm64: add fault address to trapframe

4a06b28a15ad2e33cc2b8c16ce2b946a517d758a by andrew:
Add compat support for struct reg on arm64

1c1f31a5e517ebb940c752c3468b03cdc687c5c7 by andrew:
Remove unused registes from the arm pcb

ea3061526e9ce5d3b65932c1d3e4437abd556d65 by andrew:
Bump __FreeBSD_version for changing spsr on arm64

6a4f5fdd19d6de8612998eb7c62273fd8b8c3908 by andrew:
Mark the arm64 PSR register fields with UL

c16c4ea6d399332d4a023df6e423be61fdb875a5 by mjg:
vfs cache: return ENOTDIR for not_a_dir/{.,..} lookups



The failed test cases:

3 tests failed.
FAILED:  sys.netinet6.test_ip6_output.py.TestIP6Output::test_output6_pktinfo[iponly1]

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

FAILED:  sys.kern.ktls_test.ktls_listening_socket

Error Message:
/usr/src/tests/sys/kern/ktls_test.c:2804: bind(s, (struct sockaddr *)&sin, sizeof(sin)) == 0 not met

FAILED:  sys.netpfil.pf.route_to.icmp_nat

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