Red Hat Bugzilla – Bug 853506
Xen crashes on AMD processor
Last modified: 2013-02-12 04:59:00 EST
Description of problem: I just did a fresh install of Fedora 16 on a computer with an AMD processor. I tried to boot with Linux in Xen Dom0, but Xen crashes. Downgrading to xen-4.1.1-8.fc16.x86_64 fixed the problem. Version-Release number of selected component (if applicable): xen-4.1.3-1.fc16.x86_64 kernel-3.4.9-2.fc16.x86_64 I also tried Fedora 17's kernel-3.5.2-3.fc17.x86_64 with the same affect How reproducible: Every time Steps to Reproduce: 1. Install Fedora 16 2. Install Xen 3. Boot Linux in Xen Dom0 Actual results: Xen says, Panic on CPU 0: Xen BUG at pci_amd_iommu.c:33 Expected results: Xen should boot Additional info: The processor is an AMD Athlon 64 X2 Dual Core Processor 3800.
It looks like a known xen crash, see http://lists.xen.org/archives/html/xen-devel/2012-08/msg01454.html and http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=684661 Could you supply the information they request there (ie. full serial boot log with iommu=debug boot option)?
The Xen packages at http://koji.fedoraproject.org/koji/taskinfo?taskID=4694272 boot fine (after I updated some packages to their Fedora 17 counterparts).
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Closing WONTFIX for f16, sounds like this was fixed in F17
(In reply to comment #4) > Closing WONTFIX for f16, sounds like this was fixed in F17 Or F18. The build referred to above was a preview build of xen-4.2.1 but F17 is sticking to xen-4.1.x for released builds. F18 has xen-4.2.x .