Corpus for openat$null:

Coverage	Program
3867	openat-perf_event_open-getsockopt$inet6_buf-syz_io_uring_submit-memfd_create-lseek-mmap-perf_event_open-openat$sr-ioctl$F2FS_IOC_START_VOLATILE_WRITE-mmap-ioctl$BTRFS_IOC_SCRUB-ioctl$BTRFS_IOC_QUOTA_RESCAN-openat$null-ioctl$FIGETBSZ-ioctl$CDROMSETSPINDOWN-sendmsg$nl_generic-mmap
2191	socket$inet6_udplite-setsockopt$inet6_mreq-perf_event_open-syz_io_uring_setup-mmap-socket$inet6_icmp_raw-openat$null-syz_io_uring_submit-syz_open_dev$vcsa-sendmmsg$sock-mmap$IORING_OFF_SQ_RING-mmap$IORING_OFF_CQ_RING-io_uring_enter-ioctl$EXT4_IOC_GET_ES_CACHE