FreeBSD-main-amd64-test - Build #24937 - Still Unstable

FreeBSD-main-amd64-test - Build #24937 (d7847a8d351436a4654bd2c746bc9c04401160ee) - Still Unstable

Build information: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24937/
Full change log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24937/changes
Full build log: https://ci.FreeBSD.org/job/FreeBSD-main-amd64-test/24937/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)

f7dbbbd1762f8f74d5a585230c56eca92e4fdb8b by brooks:
libsys: don't expose sigwait wrapper

ef5fddd3440cc726db2acb85ca55fdc9c996ea64 by brooks:
libsys: make __libsys_interposing static

d7847a8d351436a4654bd2c746bc9c04401160ee by brooks:
lib{c,sys}: return wrapped syscall APIs to libc



The failed test cases:

1 tests failed.
FAILED:  cddl.usr.sbin.zfsd.zfsd_unittest.main

Error Message:
Received signal 6