Corpus for fcntl$dupfd:

Coverage	Program
1798	ioctl$BTRFS_IOC_GET_SUBVOL_ROOTREF-perf_event_open-openat$sr-ioctl$FIGETBSZ-ioctl$SG_IO-ioctl$SCSI_IOCTL_STOP_UNIT-openat$vcs-kcmp-stat-setreuid-ioctl$SG_IO-creat-getsockopt$sock_cred-getsockopt$sock_cred-fcntl$dupfd-socket$netlink-fcntl$dupfd-dup3
757	socket$netlink-fcntl$dupfd-sendmsg$nl_generic
173	syz_init_net_socket$bt_sco-fcntl$dupfd-setsockopt$inet_IP_IPSEC_POLICY
114	perf_event_open-add_key$keyring-add_key$keyring-syz_io_uring_submit-write$binfmt_script-add_key$keyring-syz_io_uring_submit-keyctl$KEYCTL_MOVE-keyctl$KEYCTL_MOVE-add_key$fscrypt_v1-keyctl$reject-syz_io_uring_submit-syz_io_uring_submit-add_key$keyring-keyctl$restrict_keyring-syz_open_dev$tty20-fcntl$dupfd-keyctl$restrict_keyring
111	openat$hwrng-syz_init_net_socket$802154_raw-fcntl$dupfd