FreeBSD-stable-14-amd64-test - Build #831 - Still Unstable

FreeBSD-stable-14-amd64-test - Build #831 (134a275eea7a2edf34b4b98cf6f382d7a3618597) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-stable-14-amd64-test/831/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-stable-14-amd64-test/831/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-stable-14-amd64-test/831/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)

01f650cb8d034f1de4616d173fbfd62c85636b42 by christos:
sound: Merge ac97 and ac97_patch

03241eb78078a9cd319ec50822762d926d14bc30 by christos:
sound: Remove dead code from pcm/

732bb2807dc8dcc13822e6511e1703cce26a27cd by christos:
sound: Remove unused code from pcm/g711.h

1b4b19841cbdf537ef723b38eb22f21493c0174d by christos:
sound: Dissolve pcm/intpcm.h

2c17a7d8f65d99f9f24a369236aa163eaaab63e1 by christos:
sound: Merge pcm/matrix_map.h with pcm/matrix.h

63979e82e54d195055573ae9078c768f74689a1e by christos:
sound: Fix mis-sorted CHN_F_BITS line

134a275eea7a2edf34b4b98cf6f382d7a3618597 by christos:
sound: Do not access cv_waiters



The failed test cases:

5 tests failed.
FAILED:  sys.kern.sigsys.sigsys_test_off

Error Message:
/usr/src/tests/sys/kern/sigsys.c:70: sysctlbyname(name, &oldval, &oldlen, NULL, 0) == 0 not met

FAILED:  sys.kern.sigsys.sigsys_test_on

Error Message:
/usr/src/tests/sys/kern/sigsys.c:70: sysctlbyname(name, &oldval, &oldlen, NULL, 0) == 0 not met

FAILED:  usr.bin.grep.grep_test.recurse_symlink

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

FAILED:  sys.netmap.ctrl-api-test.main

Error Message:
Returned non-success exit status 255

FAILED:  sys.netlink.test_netlink_message_writer.py.__test_cases_list__

Error Message:
Test program did not exit cleanly