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Description of problem: Kernel crashes when multiple instances of a program register memory and send it to other instances on the same machine. Version-Release number of selected component (if applicable): kernel-2.6.38.6-26.rc1.fc15.x86_64 How reproducible: Always Steps to Reproduce: I can probably attach a binary that reproduces the problem if anyone is interested in configuring a test machine. Actual results: Kernel crash
I believe this will be fixed in 2.6.38.8-35; in the meantime you can work around it with "iommu=soft" if you don't need the isolation/security provided by the iommu.
kernel-2.6.38.8-35.fc15 has been submitted as an update for Fedora 15. https://admin.fedoraproject.org/updates/kernel-2.6.38.8-35.fc15
Package kernel-2.6.38.8-35.fc15: * should fix your issue, * was pushed to the Fedora 15 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing kernel-2.6.38.8-35.fc15' as soon as you are able to, then reboot. Please go to the following url: https://admin.fedoraproject.org/updates/kernel-2.6.38.8-35.fc15 then log in and leave karma (feedback).
kernel-2.6.38.8-35.fc15 has been pushed to the Fedora 15 stable repository. If problems still persist, please make note of it in this bug report.