Communication issues with parent-child processes

[kimiwanano]

The following error occurs during the execution of AFL:

[-] PROGRAM ABORT: read: Unable to request new process from fork Server (OOM?)
Location: run_target (), the afl - fuzz. C: 2530

So I print the return value of read() res = 0, which means nothing is read. When I check the write(), it does write the child id of the new fork correctly. What would cause afl-fuzz to return a value of 0?

[17ssDP]

I meet the same problem, do you have solved it?