Corpus for write$P9_RMKNOD:

Coverage	Program
2704	openat-recvmsg$unix-mount-fallocate-write$P9_RMKNOD-perf_event_open-creat-ioctl$FS_IOC_GETFSMAP-syz_init_net_socket$nl_generic-openat-syz_genetlink_get_family_id$netlbl_mgmt-socket$packet-syz_io_uring_setup-fcntl$lock-ioctl$BTRFS_IOC_FS_INFO