Corpus for dup:

Coverage	Program
2262	ioctl$TCSETSF2-ioctl$TCSETSF2-syz_open_pts-openat$tun-ioctl$TUNSETQUEUE-openat$tun-socket$inet-syz_open_pts-perf_event_open-dup3-dup3-dup
1740	perf_event_open-perf_event_open-getpgrp-pidfd_open-dup-setns
1189	perf_event_open-socketpair$unix-sendmsg$unix-dup-recvmmsg-openat-perf_event_open
639	perf_event_open-sendfile-socket$netlink-fcntl$dupfd-dup-openat
580	seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-dup
67	perf_event_open-prlimit64-dup