[Crash-utility] crash vs irqs

[D. Hugh Redelmeier]

I'm having a problem with the Fedora 7 kernel 2.6.21-1.3228.fc7 for
x86_64.  So I am trying to use crash-4.0-4.2 to analyze the problem.
(The version of crash in F7 won't work with this kernel.)

Since the kernel bug appears to be in irq handline, learning more
about IRQ state is important.

When I use the irq command I get this error message:
  irq: cannot determine size of irq_desc_t

Is this a bug or a known limitation of crash?