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Bug#670398: linux-image-2.6.32-5-amd64: SSH logins hang while hpet interrupts multiply on Intel Nehalem CPUs

On Fri, Apr 27, 2012 at 04:19:21AM +0100, Ben Hutchings wrote:


> So it looks like in this case at least you're seeing a bug in USB error
> recovery and not anything to do with timing using the TSC vs HPET.

Ok, a few minutes ago I got aware of another system with the given
symptoms with a SandyBridge CPU (E3-1220) and the same CallTrace.

I'm now wondering what I could do to help to debug such issue

All those Dell systems (R210 and R210 II) are equipped with DRAC
KVM cards. They expose the input of the KVM Java applet as USB
devices to the system. For at least one of the effected systems
I'm pretty sure that nobody tried to use the KVM applet while
that issue appearead but that doesn't mean anything.
External USB devices were not connected to the systems.

Kernel is linux-image-2.6.32-5-amd64  2.6.32-38


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