[Bug 278195] daemon is exiting without informing that it failed to execute

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=278195

            Bug ID: 278195
           Summary: daemon is exiting without informing that it failed to
                    execute
           Product: Base System
           Version: 13.3-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: bin
          Assignee: bugs@FreeBSD.org
          Reporter: skenizen@gmail.com

When launching a daemon in the jail (as a specified user) /usr/sbin/daemon was
exiting with return code 0 and not outputting anything in the syslogs.

This happened on a jail I've erroneously upgraded from FreeBSD 13.2-RELEASE to
FreeBSD 13.3-RELEASE on a system host with 13.2-RELEASE.

I've seen other users mentioning similar issues on TrueNAS forums pinpointing
to kqueuex() being the culprit for ABI incompatibility
(https://www.truenas.com/community/threads/warning-dont-upgrade-your-truenas-core-jails-to-freebsd-13-3-just-yet.117018).

Although my bug report is not about this, but more about the lack of
information on the user that something wrong happened. I'd expect at minimum a
different return code than 0 (and preferably an explicit error in the log too).

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