Corpus for wait4:

Coverage	Program
2593	perf_event_open-getegid-msgget$private-msgctl$IPC_SET-msgsnd-msgsnd-msgctl$IPC_RMID-getresgid-signalfd4-sendmsg$TIPC_CMD_GET_NODES-fork-ptrace-wait4
593	fork-ptrace-wait4
103	perf_event_open-wait4
101	perf_event_open-wait4
79	gettid-wait4
74	getpid-wait4
42	prctl$PR_SET_SYSCALL_USER_DISPATCH_ON-wait4
12	wait4