FreeBSD-main-amd64-test - Build #29315 - Still Unstable

FreeBSD-main-amd64-test - Build #29315 (81a67bfebc60055bbf19ce6e39537fb5f53eeee5) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/29315/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/29315/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/29315/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)

f2366851616083f923e8101363802678a03dc0b9 by des:
kern/sched: Hide scheduler selection from C++

7e9e72bee359437b9f78c6a4056ef0a90337f341 by markj:
mtw: fix zero-length queue array that can corrupt struct mtw_softc

81a67bfebc60055bbf19ce6e39537fb5f53eeee5 by markj:
rsu: add a runtime TX buffer bound check for a kernel buffer overflow



The failed test cases:

3 tests failed.
FAILED:  sys.posixshm.posixshm_test.accounting

Error Message:
/usr/src/tests/sys/posixshm/posixshm_test.c:1192: st.st_blksize * st.st_blocks == (blkcnt_t)shm_sz not met

FAILED:  lib.libarchive.functional_test.test_read_filter_lz4_raw_skip

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

FAILED:  sys.netpfil.common.rdr.ipfnat_local_redirect

Error Message:
Redirect failed