Xen hypervisor panic - Xen BUG at trace.c:254

Solution Unverified - Updated -

Issue

The Xen hypervisor crashes with a footprint similar to the following example:

(XEN) Xen call trace:
(XEN)    [<ffff828c80119e32>] trace+0x42/0x390
(XEN)    [<ffff828c80117538>] schedule+0x148/0x270
(XEN)    [<ffff828c80117f60>] do_softirq+0x70/0x80
(XEN)    [<ffff828c80130b0c>] idle_loop+0x3c/0x50
(XEN)
(XEN)
(XEN) ****************************************
(XEN) Panic on CPU 10:
(XEN) Xen BUG at trace.c:254
(XEN) ****************************************

Environment

  • Red Hat Enterprise Linux (RHEL) up to 5.9
  • Xen hypervisor 3.1.2-308.8.2.el5, dom0 kernel 2.6.18-308.8.2.el5xen
  • xenmon.py performance monitoring utility

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