Corpus for fcntl$dupfd:

Coverage	Program
7553	perf_event_open-socket$inet6_udp-setsockopt$inet6_udp_int-connect$inet6-openat$sr-syz_open_dev$loop-ioctl$LOOP_SET_FD-ioctl$PERF_EVENT_IOC_QUERY_BPF-sendmsg$inet-fcntl$dupfd-sendmsg$inet6-write-syz_open_procfs-syz_open_procfs-syz_mount_image$ext4-syz_mount_image$tmpfs-mkdir-umount2-unshare-mount$bind
2725	perf_event_open-socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-preadv-fcntl$setown-ioctl$PERF_EVENT_IOC_REFRESH-socket$inet6_icmp_raw-socket$inet6_udp-connect$inet6-syz_open_dev$mouse-dup2-fsetxattr$security_selinux-sendmsg$inet-connect$inet6-fcntl$dupfd-sendmsg$inet6
204	perf_event_open-syz_io_uring_setup-eventfd-io_uring_register$IORING_REGISTER_EVENTFD_ASYNC-io_uring_register$IORING_UNREGISTER_EVENTFD-fcntl$dupfd-ioctl$BTRFS_IOC_GET_SUBVOL_INFO-ioctl$RTC_SET_TIME
131	openat$ttyS3-socket$inet_udplite-fcntl$dupfd
116	perf_event_open-ioctl$TIOCGSID-fcntl$dupfd-perf_event_open-ioctl$PIO_UNIMAPCLR-openat$sndtimer-openat$zero-mmap-perf_event_open-mmap-fsconfig$FSCONFIG_CMD_CREATE