Comment 63 for bug 1304001

Problem also without hvm:

Kernels:

Linux version 3.13.0-27-generic (buildd@akateko) (gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) ) #50-Ubuntu SMP Thu May 15 18:06:16 UTC 2014 (Ubuntu 3.13.0-27.50-generic 3.13.11)

Linux version 3.13.0-35-generic (buildd@panlong) (gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) ) #62-Ubuntu SMP Fri Aug 15 01:58:42 UTC 2014 (Ubuntu 3.13.0-35.62-generic 3.13.11.6)

CPU:
2x AMD Opteron(tm) Processor 4226