NMI watchdog fails to increment the NMI counter in /proc/interrupts

[chandrashekar shastri]

NMI watchdog fails to increment the NMI counter in /proc/interrupts

Kernel Version: 3.10.0-rc5+

Libvirt Version: 1.0.6

Qemu Version: 1.5.50

Steps to reproduce the issue:

1. Booted the VM with :
qemu-system-x86_64 VM1.qcow2 -enable-kvm -watchdog i6300esb -watchdog-action reset -smp 2 -m 2000

2. Edit the /boot/grub/grub/grub.conf with "nmi_watchdog = 1" before the initrd image.

3. Restart the guests, the NMI counter in /proc/interrupts was 0

4. Installed the watchdog rpm and ran chkconfig watchdog on

5. Restart the guest, even then the NMI counter did not increment

6. Changed the /boot/grub/grub/grub.conf with "nmi_watchdog = 1" to /boot/grub/grub/grub.conf with "nmi_watchdog = 2"
and restarted the guest. Even then NMI conuter did not increment (The NMI counter was showing 0 all the time for all the above steps).

[Serge Hallyn (serge-hallyn)]

Has this ever worked for you in previous versions?

I've been trying upstream v1.0, v1.2, and the saucy package (all with a precise guest) and a bunch of -machine options, but I can't get the NMI interrupts to go up.

[chandrashekar shastri (cshastri)]

I tried with QEMU PC emulator version 0.12.1 (qemu-kvm-0.12.1.2) and I was able to reproduce the issue [ NMI counter didn't increment].

[Greg Inozemtsev (ginozemtsev)]

This looks the same as https://bugzilla.redhat.com/show_bug.cgi?id=1335720