Martin Michlmayr wrote:
I was reading email in my kvm instance when suddenly it was terminated
and my whole laptop locked-up hard. I saw "unhandled vm exit:
0x80000021 vcpu_id0" and a bunch of register info that can be found at
http://www.cyrius.com/tmp/kvm.jpg
Does this give any information why kvm was terminated and my whole
machine locked-up?
I'm running 2.6.25 on x86_64 with kvm-intel and kvm version 60. The
CPU is Intel(R) Core(TM)2 Duo CPU U7600 @ 1.20GHz. The kvm instance
is a 32 bit x86 installation. Both running Debian.
It looks like host state leaked into the guest state. The register
state is consistent with a 64-bit guest, while you're running a 32-bit
guest. The guest EFER is still consistent with a 32-bit guest, which is
why you got the abort.
Presumably some guest state also leaked into the host, which is why the
host locked up.
Can you post your .config? were you running more than one guest on the
machine? were you running a debugger concurrently? anything else out
of the ordinary? do you recall the exact phase of the moon?
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
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