FreeBSD-main-amd64-test - Build #25830 - Still Unstable

FreeBSD-main-amd64-test - Build #25830 (38cb1ba8637d08ce3f6b3c614f39698db153cd4d) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/25830/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/25830/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/25830/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)

b77b7aeb185d3a6c2d04aa6a69531894d4eba848 by andrew:
arm64: Fix the alt name for ZCR_EL1

14006c96214a772ba2e2f07bb4301657d8c2055a by andrew:
arm64: Fix the MRS_EXACT_IF_DIFFERENT check

4b516226dc39c6c1918cb85a254fed59570bdc4f by andrew:
arm64: Add CTR_EL0 op and CR values

938e4b131c483a05d5e5ea8f2bb44dfd1514868b by andrew:
arm64: Use the PAN msr mnemonic rather than .inst

ba1904937d9ae0539e39001467a1519b17177118 by andrew:
acpica: Extract _OSC parsing to a common file

fafb43abd0dcaf2d36ec7344f46e7e19c42be888 by andrew:
pci: Use a switch statement when reading ivars

7cafe75c8c52deffcb3e64200eb4187a52cf202d by andrew:
pci: Make generic_pcie_read_ivar non static

deb36d0c65436d16b04f99cc2a27bd0f3980a6f0 by andrew:
pci_host_generic: Support ACPI_IVAR_HANDLE

1f5c50a8617355758510675cb9412f56fed12efc by andrew:
pci_host_generic:Add pcib_request_feature on ACPI

38cb1ba8637d08ce3f6b3c614f39698db153cd4d by andrew:
conf: Add acpi_pci.c to the arm64 build



The failed test cases:

3 tests failed.
FAILED:  sys.kern.sigwait.test_wait_dequeue_sigchld_true

Error Message:
/usr/src/tests/sys/kern/sigwait.c:403: -1 != sig: sigwaitinfo() should fail, sig 20 != -1

FAILED:  sys.netinet6.frag6.frag6_03.frag6_03

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

FAILED:  sys.net.routing.test_routing_l3.py.TestIfOps::test_change_prefix_route[inet]

Error Message:
/usr/tests/sys/net/routing/test_routing_l3.py:42: AssertionError