Comment 4 for bug 1129571

Well, the first step would be to provide a reasonably tractable set of reproduce instructions (at minimum, something like "do this to set up a chroot, then in the chroot run this command and watch it SIGILL".) Also checking it still repros on 1.4.0 (just released) would be nice (though I don't think we've fixed anything in this area, it's an easy thing to try...)

However I would not be too optimistic -- Java is typically heavily threaded, and QEMU user-mode has a number of known problems with handling multithreaded guests. It's possible this will turn out to be a fairly easy fix, but it's equally possible it will just be another manifestation of problems like LP:668799.