FreeBSD-main-amd64-test - Build #29386 - Still Unstable

FreeBSD-main-amd64-test - Build #29386 (420428718da769ea72d3f18ed8eba7c3d998b1c8) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/29386/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/29386/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/29386/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)

0cc6c442964d6294b796537522d9e462656bf16f by kib:
condvars(9): add cv_wait_sig_unlock()

a15c71254afa25ce008334d63fb6feecd68605f8 by kib:
condvar.9: document cv_wait_sig_unblock(9)

9bd3fe5712217ef8ae4cebba8be82c45be0c72e6 by kib:
tty: add tty_wait_proctree(9)

824f934bf9d5fcb34dd6c97d650a26823158abf1 by kib:
tty: make tty_wait_background() aware of proctree_lock ownership

420428718da769ea72d3f18ed8eba7c3d998b1c8 by kib:
tty: gracefully handle proctree_lock locking



The failed test cases:

4 tests failed.
FAILED:  sys.kern.procdesc.pdopenpid_capmode

Error Message:
/usr/src/tests/sys/kern/procdesc.c:393: Expected errno 94, got 3, in pdopenpid(grandchild, 0) < 0

FAILED:  sys.netlink.netlink_socket.overflow

Error Message:
/usr/src/tests/sys/netlink/netlink_socket.c:146: send(fd, &hdr, sizeof(hdr), 0) == sizeof(hdr) 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