Corpus for mknod$loop:

Coverage	Program
4673	syz_mount_image$iso9660-mount-mknod$loop
2294	mknod$loop-openat$dir-creat-syz_open_dev$evdev
1932	mknod$loop-openat-write$binfmt_elf64
1922	mknod$loop-removexattr
1832	iopl-iopl-prctl$PR_SET_SYSCALL_USER_DISPATCH_ON-iopl-mknod$loop
1823	mknod$loop-acct-openat$dir