Corpus for openat$null:

Coverage	Program
2602	perf_event_open-socket$netlink-dup2-dup-openat$loop_ctrl-ioctl$LOOP_CTL_REMOVE-ioctl$LOOP_CTL_REMOVE-syz_io_uring_setup-openat$null-io_uring_register$IORING_REGISTER_PERSONALITY-socket$inet-socket$inet_icmp_raw-openat
669	openat$null