FreeBSD-stable-15-amd64-test - Build #1128 - Still Unstable

FreeBSD-stable-15-amd64-test - Build #1128 (c52f99acee2a65b8e58b9cc50a00130eb238f909) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-stable-15-amd64-test/1128/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-stable-15-amd64-test/1128/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-stable-15-amd64-test/1128/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)

61412c0ff5cc69103a1e24ceaa387d4a2e150c40 by kib:
amd64 cpufunc.h: add WRMSRNS helpers

54cb4bf00b82f4a9cafb9942089aa00bfcca06f0 by kib:
amd64: gate WRMSRNS immediate form on compiler support

ca7aa1c162c1c47ea149558bf46281c9b566ceca by kib:
amd64: add md thread flags word

77a99f36ba4f86e667070cc79afce9ab771ec641 by kib:
amd64: handle #AC in kernel mode

b4a9afdf70e3bb688db207462e2416758fbf6d19 by kib:
amd64: calculate if hardware supports disabling splitlocks

6d6a82416b88183036577b824068a26919797791 by kib:
amd64: support for tracking per-thread 'disable splitlocks' state

d95433ec84b973c7e6ab819bbf4fb5bbcb829d2a by kib:
amd64: add userspace control for disabling splitlocks

0dce4f2a39dcdc30c3176720a4f86c69b9a1d707 by kib:
amd64: cache MSR_MEMORY_CTL in pcpu

c52f99acee2a65b8e58b9cc50a00130eb238f909 by kib:
amd64: use WRMSRNS immediate form to update splitlock control, when



The failed test cases:

2 tests failed.
FAILED:  sys.netpfil.pf.divert-to.in_dn_in_div_in_out_div_out_dn_out

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

FAILED:  lib.libexecinfo.sigtramp_test.test_backtrace_sigtramp

Error Message:
/usr/src/lib/libexecinfo/tests/sigtramp_test.c:30: n > 1 not met