Why Defunct Processes Are Created in Linux?

The reason a user may see such entries in the operating system's process table, is simply because the parent process has not read the status of the process. Orphaned defunct processes are eventually inherited by the system init process and will be removed eventually.

Why defunct processes are created?

Child processes remain in the process table as defunct processes because many programs are designed to create child processes and then perform various tasks after the child terminates, including restarting the child process.

What is defunct Linux?

What Is a Zombie Process. Zombie processes in Linux are sometimes also referred to as defunct or dead processes. They're processes that have completed their execution, but their entries are not removed from the process table.