Comment 4 for bug 293235

Yup. The systemtap package currently included with Intrepid isn't compatible with the 2.6.27 kernel, due to the on_each_cpu change, and of course Intrepid does use a 2.6.27 kernel! There's little point in packaging a systemtap that's incompatible with the kernel you ship; everyone who tries to use systemtap on Intrepid is going to run into this.

Who maintains this systemtap package for Ubuntu; can you please either update to a newer upstream package if applicable, or patch in the obvious change?