Comment 10 for bug 130075

Your actually fighting two issues here.

The "to many iterations" part is harmless and can be ignored, it has nothing to do with why the system crashes.

Your system is crashing because an IRQ gets disabled, when an IRQ get disabled, that means anything using it stops talking with the kernel, if thats your harddisk controler, the machine isn't going to last long before it dies.

Disable SMP to fix the problem...

Now SMP is not the true problem here, but when you disable SMP, you remove things like MSI/MSI-X and APIC, IOAPIC and other SMP related features thats *known* to be broken on many motherboards. The reason I don't say to disable the sub SMP features, is because SMP on those same motherboards might be just as broken without MSI/MSI-X and IO-APIC enabled, and can still crash.

Bottom line is Many Cheap Motherboard + SMP = crap. (Especially Nvidia based ones, but I don't have information that points the finger at the nvidia chipset being broken, it's according to the limited information I have the motherboard vendors that has implemented the Nvidia chipset badly and broken it)