Corpus for fchown:

Coverage	Program
2970	seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-perf_event_open-perf_event_open-socket$inet6_udp-fchown-getpgid-fork-kcmp
2685	seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-fadvise64-fsetxattr$security_selinux-ioctl$SECCOMP_IOCTL_NOTIF_ADDFD-creat-creat-fadvise64-socket$inet6_tcp-bind$inet6-connect$inet6-shutdown-socket$nl_route-getresgid-ioctl$AUTOFS_DEV_IOCTL_REQUESTER-fchown
2541	creat-write-openat$dir-sendfile-fchown
2144	perf_event_open-syz_mount_image$tmpfs-mount$bind-fchown
1209	perf_event_open-pipe2-socket$inet6_tcp-fchown
1175	socket$inet6_udp-perf_event_open-fchown
1025	prctl$PR_SET_SYSCALL_USER_DISPATCH_ON-socketpair$nbd-fchown
843	perf_event_open-syz_open_procfs-socket$nl_route-sendmsg$netlink-process_madvise-syz_open_procfs-fstat-fchown
539	socket$nl_xfrm-newfstatat-setuid-getsockopt$sock_cred-fchown
451	perf_event_open-socket$inet6_tcp-fchown
434	perf_event_open-socket$nl_sock_diag-fchown
360	openat$nvram-fchown
228	syz_open_procfs-fchown
215	syz_open_procfs-newfstatat-setresuid-fchown
197	syz_mount_image$vfat-newfstatat-setresuid-fchown