UML Linux - vmlinux.o Error 1 - final close failed: Input/output error

I'm trying to install UML linux. Kernel is 2.6.28.

I link to Linux files so that I have a read-only copy that I can revert back to.

I then run the commands:

make defconfig ARCH=um  # works
make ARCH=um            # errors out at the very end:
final开发者_开发知识库 close failed: Input/output error
make: *** [vmlinux.o] Error 1

Because of this error, my binary vmlinux never gets created so I can't run my own UML Linux. Any ideas?

Does this fix the problem?

Otherwise, more information is needed. Host's architecture, distribution, and versions of tools (GCC, binutils, Make, shell, ...).