FreeBSD-main-amd64-test - Build #20093 - Still Unstable

FreeBSD-main-amd64-test - Build #20093 (31b35400cf77e788fec3d1c9fe590cdbb3544fd4) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/20093/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/20093/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/20093/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)

bfd451210e5972c1f2ec5200b6ca6ca70a9f24ae by markj:
imgact_elf: Disable the stack gap for now

20d425842a4f80f9efc1de3f7a3b043435fe4b39 by dim:
Remove set-but-unused variable from s_sincosl.c

8b9fe05a49d7cd8079e3364f75fd48b2f53bf696 by emaste:
README.md: correct GPL expansion

e28767f0e17550d8ed030cff0918202e5de101ab by kib:
Thread creation privilege for realtime group

aaaa5a2e68e256101c9737c30ad142f1c3f05131 by imp:
loader: narrow the scope of gfx frame buffer wrt tg supported kernels

91d462192db0dc33dbc4ca38f2b24d74c5ea2987 by imp:
loader: move all gfx_fb.c stubs to common/gfx_fb_stub.c

574763f1a7dac0594d2d913b4b6afc2f96a71f49 by imp:
rtsold: Note network interfaces changing index when removed/inserted

b4fba31b633d258e70b161fd807ec86ae96f2bdc by imp:
Remove references to PCMCIA

31b35400cf77e788fec3d1c9fe590cdbb3544fd4 by imp:
pccard: Remove more of the PC Card infrastructure



The failed test cases:

6 tests failed.
FAILED:  lib.libnv.nvlist_send_recv_test.nvlist_send_recv__send_many_fds__dgram

Error Message:
/usr/src/lib/libnv/tests/nvlist_send_recv_test.c:457: nvl != NULL not met

FAILED:  sys.posixshm.posixshm_test.largepage_mprotect

Error Message:
/usr/src/tests/sys/posixshm/posixshm_test.c:1669: mmap(2097152 bytes) failed; error=28

FAILED:  sys.netpfil.pf.pfsync.defer

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

FAILED:  sys.netpfil.pf.forward.v6

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

FAILED:  sys.netpfil.pf.set_tos.v6

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

FAILED:  sys.netpfil.pf.killstate.v6

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