Corpus for fcntl$dupfd:

Coverage	Program
2731	syz_mount_image$ext4-syz_mount_image$nfs4-mkdirat-perf_event_open-rename-getxattr-creat-socket$inet-setsockopt$inet_mreqn-fcntl$dupfd-fallocate
2453	perf_event_open-socket$inet6_udp-setsockopt$inet6_udp_int-ioctl$ifreq_SIOCGIFINDEX_wireguard-ioctl$sock_ipv6_tunnel_SIOCDELPRL-connect$inet6-sendmsg$inet-connect$inet6-fcntl$dupfd-sendmsg$inet6-socket$inet6_udplite-ioctl$sock_ipv6_tunnel_SIOCADDPRL-syz_io_uring_setup-ioctl$BTRFS_IOC_GET_SUBVOL_INFO-creat-ioctl$BTRFS_IOC_GET_SUBVOL_ROOTREF-ioctl$BTRFS_IOC_GET_SUBVOL_ROOTREF
2322	perf_event_open-socket$inet6_udp-setsockopt$inet6_udp_int-connect$inet6-sendmsg$inet-connect$inet6-fcntl$dupfd-sendmsg$inet6-ioctl$sock_ipv6_tunnel_SIOCADDPRL-ioctl$CDROMREADTOCENTRY-syz_io_uring_setup-ioctl$sock_SIOCGIFINDEX-syz_io_uring_complete-creat-ioctl$BTRFS_IOC_GET_SUBVOL_INFO-ioctl$BTRFS_IOC_INO_LOOKUP_USER-ioctl$BTRFS_IOC_GET_SUBVOL_ROOTREF-ioctl$BTRFS_IOC_GET_SUBVOL_ROOTREF
2058	perf_event_open-socket$inet6_udp-perf_event_open-syz_io_uring_submit-setsockopt$inet6_udp_int-connect$inet6-sendmsg$inet-fcntl$dupfd-sendmsg$inet6-readv-syz_open_procfs-syz_mount_image$ext4-mount$9p_unix-mkdir-connect$inet6
931	openat-perf_event_open-ioctl$LOOP_SET_FD-perf_event_open-creat-dup2-getpgrp-accept4$unix-tgkill-fcntl$dupfd-syz_open_procfs-writev-openat-fcntl$F_SET_RW_HINT-perf_event_open-timerfd_create-socket$packet-fremovexattr
214	perf_event_open-socket$netlink-fcntl$dupfd-sendmsg$nl_generic-getsockopt$sock_timeval
113	openat$sndseq-openat$tun-fcntl$dupfd
112	perf_event_open-socket$inet_tcp-listen-setsockopt$inet_tcp_int-openat$incfs-ioctl$sock_inet_tcp_SIOCOUTQ-fcntl$dupfd-openat$snapshot-socket$netlink-syz_genetlink_get_family_id$tipc-socket$nl_generic-sendmsg$NL80211_CMD_SET_REG-socket$nl_generic-socket$nl_generic-syz_genetlink_get_family_id$nl80211-ioctl$sock_SIOCGIFINDEX_80211-sendmsg$TIPC_CMD_SHOW_STATS-sendmsg$TIPC_CMD_SET_NODE_ADDR-sendmsg$NL80211_CMD_SET_NOACK_MAP
87	prlimit64-socket$unix-perf_event_open-socket$netlink-fcntl$dupfd
72	ioctl$F2FS_IOC_WRITE_CHECKPOINT-writev-recvmsg$unix-perf_event_open-syz_mount_image$ext4-mount-write$P9_RREADLINK-openat$procfs-ioctl$FITRIM-umount2-ioctl$sock_bt_hci-unlinkat-socket$inet_udplite-fcntl$dupfd