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Description of problem: Any attempt to execute a 32bit compiled application on an x86_64 Fedora 9 xen guest fails, both Fedora-supplied applications and 3rd party applications. Crashes with "cannot execute binary file", strace dumps "write(3, "strace: exec: Exec format error\n", 32strace: exec: Exec format error) = 32" very quickly. Version-Release number of selected component (if applicable): Running Fedora 9 guest on RHEL 5.2 host, both x86_64 and fully patched, Fedora 9 guest with kernel 2.6.25.3-1.fc9.x86_64.xen. How reproducible: 100% reproducible. Happens every time. Problem not visible on identical x86_64 bit installation on desktop machine, problem also not visible on Fedora 8 or 7 x86_64 guest installations. Steps to Reproduce: 1. On 64bit host, try executing for instance /usr/bin/mbchk from grub-0.97-33.fc9.x86_64 - but any 32bit application will do. Actual results: It crashes. Expected results: It doesn't crash. :) Additional info: The only difference between the xen guest and a normal installation should be the kernel, so I suspect there's a parameter in there not set?
IA 32 emulation wasn't supported on kernel-xen 2.6.25.3-1.fc9.x86_64.xen. It was added on kernel-xen-2.6-2.6.25.3-2.fc9. *** This bug has been marked as a duplicate of 437358 ***