In base/mmap.jl, the system call ccall(:mmap ...) can yield a pointer p that looks like a negative number but is okay. Then the julia function fails incorrectly with strerror giving an error message of "Success" ! According to the linux man page, mmap returns a pointer to -1 if something goes wrong.
I ran into the problem on Fedora 17 on a 32 bit machine. I fixed it by changing base/mmap.jl
if convert(Int,p) < 1
error("Memory mapping failed", strerror())
if convert(Int,p) == -1
error("Memory mapping failed ", strerror())
Have I missed something here?
Thanks for the bug report and fix! I've just pushed this to master. I gave you credit for it, using --author, but in the future don't hesitate to generate a pull request. That way, when it's merged your contributions will automatically be acknowledged.