I can reproduce this bug on Intel Broadwell processors by running "perf top" and another cpu intensive process like "stress -c 8". Within 5 minutes, the kernel reports an unexpected NMI:
[2005170.748842] Uhhuh. NMI received for unknown reason 01 on CPU 70. [2005170.748882] Do you have a strange power saving mode enabled? [2005170.748900] Dazed and confused, but trying to continue -- Hardware CPU: Intel Xeon E5-2695 v4 RAM: 512GB DDR4 2400MHz System: Supermicro B10DRT -- Operating System Debian Release: 8.7 Architecture: amd64 (x86_64) Kernel: Linux 3.16.0-4-amd64 Init: systemd
