The waitpid() request issued by /usr/sbin/init to wait for the shell with pathname <shell-pathname> to execute the initialization script returned control to /usr/sbin/init at <date/time> because the shell was stopped by a signal with signal number <sig> (hexadecimal).
/usr/sbin/init sends SIGTERM to terminate the shell process group, which includes the shell process and any processes created by the shell to execute the initialization script. Then /usr/sbin/init exits with status 12 (hexadecimal). The system continues.
Investigate why the shell process received the stop signal.
Contact your system programmer.