FreeBSD-main-amd64-test - Build #23332 - Still Unstable

FreeBSD-main-amd64-test - Build #23332 (c3c5e6c3e6c459839efa5184e67928c25384d246) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/23332/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/23332/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/23332/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)

dc1c5138c3255cc9004a3842001ed6c5db8f4ea3 by zlei:
powerpc: Use the existing CTLFLAG_RDTUN and CTLFLAG_RWTUN flag

69cb72b8728ba605d6cc8758480eca3fc6fd2ed6 by zlei:
cam iosched: Use the existing CTLFLAG_RDTUN and CTLFLAG_RWTUN flag

5ff8018108278d06e024676c539e9f60f8189e83 by zlei:
ice(4): Use the existing CTLFLAG_RWTUN flag definition

8bd9afe9e1821368f4bb0d39c8c6703bf5007fd1 by zlei:
bxe(4): Use CTLFLAG_RDTUN flag definition

deac4c7f0753841de8da4d7f37d7e49620b3bbb4 by zlei:
iicbus(4): Use the existing CTLFLAG_RWTUN flag definition

c3c5e6c3e6c459839efa5184e67928c25384d246 by zlei:
tarfs: Use the existing CTLFLAG_RWTUN flag definition



The failed test cases:

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

Error Message:
/usr/src/tests/sys/kern/sigwait.c:405: -1 != sig: sigwaitinfo() should fail, sig 20 != -1

FAILED:  sys.netinet6.fibs6.fibs6_ifroutes1_success

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