Corpus for fchownat:

Coverage	Program
2410	seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-syz_mount_image$tmpfs-mknodat$loop-fchownat
1230	perf_event_open-socket$unix-bind$unix-fchownat
896	syz_mount_image$ext4-fchownat
120	prctl$PR_SET_SYSCALL_USER_DISPATCH_ON-fchownat
74	fchownat
50	perf_event_open-fchownat-socket$inet6_tcp-writev-ioctl$sock_SIOCSPGRP