[Bug 590201] Re: OpenSolaris (previously working) no longer boots: kernel panics early

[Ed Hynan]

OK Serge, I've tried that kernel and it didn't help except
maybe with a dmesg line that looks new (I might have
just missed it).

1) With my long kvm invocation, I got the OSol kernel
panic output shown in the .png attachment to an
earlier message; but, also this line dmesg:

  [  210.924821] kvm: 2594: cpu0 unhandled rdmsr: 0xc0011023

2) With the short commandline you posted a few days ago
the OSol kernel doesn't panic but attempts a BSDish dump, and
no dump device is configured so it just stops. I will attach a
.png of the visible last lines of that.  In this case the dmesg
line is not "unhandled rdmsr", but instead:

  [  580.689021] kvm: emulating exchange as write

Something looks interesting: in 1) kvm says "unhandled rdmsr",
and in 2) the kernel call trace shows a few symbols with
'wrmsr' (see attached .png). Error regarding a model specific
register? I don't have experience at this low level so I am
only hoping there's a clue here.

-Ed


** Attachment added: "screenshot of tail of OSol kernel dump"
   https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/590201/+attachment/1879687/+files/osolcallstack.png

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https://bugs.launchpad.net/bugs/590201

Title:
  OpenSolaris (previously working) no longer boots: kernel panics early