Corpus for wait4:

Coverage	Program
3293	perf_event_open-shmget$private-shmget-shmget-shmctl$IPC_RMID-shmget$private-shmctl$IPC_RMID-shmctl$SHM_UNLOCK-shmctl$IPC_STAT-shmctl$SHM_UNLOCK-shmat-fork-ptrace-ptrace$cont-wait4
3091	perf_event_open-shmget$private-shmget-shmctl$SHM_STAT-shmctl$SHM_UNLOCK-shmctl$IPC_STAT-fork-ptrace-wait4-syz_open_procfs
644	msgctl$MSG_INFO-perf_event_open-timer_create-fork-openat2-fork-ptrace-wait4
603	shmctl$IPC_RMID-shmctl$SHM_STAT-shmctl$SHM_LOCK-fork-shmctl$SHM_UNLOCK-ptrace$setopts-fork-ptrace-wait4-sched_setaffinity-getpgrp-tgkill-ioctl$TIOCGSID-ptrace
581	openat$pidfd-openat$full-pidfd_getfd-fork-ptrace-ptrace$cont-wait4-sendmsg$nl_generic
577	seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-wait4
445	syz_io_uring_submit-perf_event_open-perf_event_open-syz_io_uring_submit-openat-fork-ptrace-ptrace$cont-wait4-syz_open_procfs-pread64-setsockopt$inet6_opts
107	fork-wait4
74	gettid-seccomp$SECCOMP_SET_MODE_STRICT-wait4
56	wait4
36	wait4