Other symptoms I noticed - when the kernel is in this state (when I collected the apport-collect a few min ago, then was in the process of rebooting back to 3.12 kernel):
'virsh destroy' errored out with "device or resource busy" on a sigkill: root# virsh destroy centos-nessus error: Failed to destroy domain centos-nessus error: Failed to terminate process 3170 with SIGKILL: Device or resource busy and a 'ps axl' hung for several minutes; when it completed here's the next line it was hanging on: 6 109 3170 1 20 0 13198936 5996384 exit Dl ? 341:47 qemu-system-x86_64 -enable-kvm -name centos-nessus -S -machine pc-1.0,accel=kvm,usb=off -cpu SandyBridge,+pdpe1gb,+osxsave,+dca, and the process exited shortly thereafter. There weren't any messages in dmesg from this. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1332409 Title: [Supermicro X9DR3-F] Virtual machines hang in kernel 3.13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1332409/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
