Public bug reported:

I'm running 2.6.24-18-xen and dmesg shows this error message

  BUG: unable to handle kernel paging request at virtual address
00100100

as soon some load or I/O is generated.

Even a simple kernel-upgrade (to version 2.6.24-19-xen) locks up the
dom0. Currently running domU are not affected, but most of the time a
login to the dom0 via ssh is no longer possible.

I've attached the full dmesg output and lspci information.

I found a few other similar kernel bugs with a notice to try kernel
2.6.27 of intrepid, but I couldn't find a xen-version of that (only
linux-image-2.6.27-2-generic / -server / -virtual).

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

-- 
xen kernel & I/O - dmesg: BUG: unable to handle kernel paging request at 
virtual address 00100100
https://bugs.launchpad.net/bugs/269000
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