FreeBSD-main-amd64-test - Build #24663 - Still Unstable

FreeBSD-main-amd64-test - Build #24663 (c8328f1a7b6ea59951e2ea2c1a9a4aa10020c8c5) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24663/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24663/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24663/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)

5df041c4bbf70d549b055f332630925295ad5aaf by kevans:
bhyveload(8): document some SECURITY CONSIDERATIONS

848a8bf3f40d91bda0ae3ab67f22ed693f25f9c4 by markj:
fb: Check for errors from copyin()

d07acc58d8987e8e1205f4a82b77e847ea2d60d3 by markj:
systm: Relax __result_use_check annotations

8e1a7e29b6cc276a2763e61b5f61afebd4570bba by markj:
sanitizers: Avoid building genassym.c and genoffset.c with sanitizers

55e2a7d3ea21728f0a5ea712350f521507f3cfb0 by rew:
pmap_pinit(9): sweep references to pmap_pinit2()

bc1eea0c0b0ad0a39b5b22b89341b4af1f0cd21f by rew:
pmap_init(9): sweep references to pmap_init2()

82f2275b73e556580b155ea9bbf7f7e364458fa1 by jhb:
cd9660: Add support for mask,dirmask,uid,gid options

246e0457d93071ffd901c78e3ee7badc5f51bd4c by jhb:
mixer.8: Add terse example for increasing volume

03d04bf49492fc70366e6d78194336a4122282a2 by jhb:
Stop using expressions in _Alignof()

60b2e2d3ee82b1aa58bdca2697ea3dd25b903102 by brooks:
libc: stop exposing __fcntl_compat

c8328f1a7b6ea59951e2ea2c1a9a4aa10020c8c5 by rew:
pmap_init(9): drop MLINKS reference



The failed test cases:

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

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

FAILED:  sys.kern.shutdown_dgram.unblock

Error Message:
Test case body timed out

FAILED:  sys.kern.unix_passfd_dgram.send_and_shutdown

Error Message:
/usr/src/tests/sys/kern/unix_passfd_test.c:431: openfiles() == nfiles - 1 not met