Corpus for fstat:

Coverage	Program
1525	add_key$keyring-add_key$user-perf_event_open-syz_open_procfs-fstat
873	prctl$PR_SET_SYSCALL_USER_DISPATCH_ON-getpid-pidfd_open-fstat
770	openat$pidfd-fstat
462	syz_open_procfs-fstat
436	ptrace-wait4-syz_open_procfs-fstat
435	creat-close_range-fstat
130	memfd_create-ioctl$FS_IOC_SETFLAGS-fstat
129	seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-socket$inet6_icmp_raw-fstat
121	openat$vga_arbiter-fstat