# [OmniOS-discuss] Panic when starting installer as KVM guest

Dan McDonald danmcd at omniti.com
Sat Sep 20 02:51:46 UTC 2014

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    On Sep 19, 2014, at 10:25 PM, David Khacherian <dmkhacherian at csupomona.edu> wrote:

    > I've been trying to get the OmniOS installer working under kvm with qemu, and I'm always presented with the same kernel panic at the same place after the Oracle copyright notice, after which the installer restarts itself:
    >
    > SunOS Release 5.11 Version omnios-b281e50 64-bit
    > Copyright (c) 1983, 2010, Oracle and/or its affiliates. All rights reserved.
    > panic[cpu0]/thread=fffffffffbc2fac0
    >
    > I've tried both the LTS and current stable installers, and they give the same results. I've tried disabling ACPI and HPET, varying the amount of RAM and VCPUs, etc..., to no avail.
    > Here's the exact line I'm using to invoke qemu:
    >
    > qemu-system-x86_64 -enable-kvm -vga std -m 2048 -cdrom OmniOS_Text_r151010u.iso -boot order=d omnios.img
    >
    > Output of 'qemu -version':
    >
    > QEMU emulator version 2.1.0, Copyright (c) 2003-2008 Fabrice Bellard
    >
    > And if it helps, the KVM host is Gentoo, with a hardened 3.15.8 kernel. The use-flags I used when building qemu can be found here: http://pastebin.com/hDTUgU4r
    >
    > Omitting "-enable-kvm" lets the virtual machine run as expected, albeit at a crawl.
    >
    > I suspect that there may be a bug at work here, and I'd greatly appreciate any suggestions on how to proceed. Thanks for your time.

    You're seeing this with the boot iso, right?

    Next time, when presented the opportunity, press ESC and get to the grub menu.  When you get there, press 'e' for edit, then edit the line with "unix" toward the end.  After "..../unix" and before any other flags, insert "-k".

    You will boot with kmdb, and when it panics, you will enter the kernel debugger, where you can show this list the panic stack with mdb's "$c" command.

    Please share that stack with the list.

    THanks,
    Dan

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