Corpus for fchmod:

Coverage	Program
2214	perf_event_open-openat-fsetxattr$system_posix_acl-fchmod
804	memfd_create-fchmod
711	close_range-openat-fchmod
578	socket$unix-perf_event_open-openat$sysfs-stat-setresuid-statx-fchown-bind$unix-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-mq_open-mq_notify-clock_gettime-mq_timedsend-fchmod-socket$inet6-bind$inet6
256	socket$nl_xfrm-fchmod
171	memfd_create-fchmod
148	openat$selinux_attr-fchmod
146	openat$tcp_congestion-fchmod
16	perf_event_open-fchmod