"panic: HYPERVISOR_mmu_update failed" during shutdown

[bad%bsd.de@localhost (Christoph Badura)]

Hi,

I just got the following shutting down a netbsd-5 Xen3 domu.
Dom0 is netbsd-5/i386, too. i.e. no PAE.
Xen is xenkernel3-3.1.4nb3.

xpq_flush_queue: 1 entries
0x0000000076cfabf8: 0x000000004510a007
panic: HYPERVISOR_mmu_update failed

Begin traceback...
uvm_fault(0xcbbf94fc, 0, 1) -> 0xe
fatal page fault in supervisor mode
trap type 6 code 0 eip c0397021 cs 9 eflags 10246 cr2 1 ilevel 6
panic: trap
Faulted in mid-traceback; aborting...
dump to dev 142,1 not possible
rebooting...

--chris