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[Qemu-devel] [Bug 957622] Re: kvm -kernel with grub multiboot kernel dum


From: Serge Hallyn
Subject: [Qemu-devel] [Bug 957622] Re: kvm -kernel with grub multiboot kernel dumps core or exits
Date: Tue, 20 Mar 2012 15:09:08 -0000

Thanks, Scott, the patch worked for me so I'll push it.

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https://bugs.launchpad.net/bugs/957622

Title:
  kvm -kernel with grub multiboot kernel dumps core or exits

Status in QEMU:
  Confirmed
Status in “qemu-kvm” package in Ubuntu:
  Fix Released

Bug description:
  I attempted to use kvm -kernel with a grub multiboot image,
  specifically grub-maverick-20100729.img at [1].  That file was built
  using [2]

  $ 
url="http://bazaar.launchpad.net/~ubuntu-on-ec2/vmbuilder/automated-ec2-builds/download/head:/grubmaverick20100729-20100729071944-bevge631maio9jpl-2/grub-maverick-20100729.img";
  $ wget $url -O grub-maverick-20100729.img
  $ qemu-img create -f qcow2 disk.img 1G
  $ kvm -curses -kernel grub-maverick-20100729.img -drive 
file=disk.img,if=virtio

  This process works fine on oneiric and you will see a curses
  interface, and some output of grub looking for a image to boot.

  On my laptop (with kvm support), I saw:

  $ kvm -curses -kernel grub-maverick-20100729.img -drive 
file=disk.img,if=virtio;
  fread() failed
  $ echo $?
  1

  On a kvm guest (via openstack instance), it crashed differently:
  $ kvm -curses -kernel grub-maverick-20100729.img -drive 
file=disk.img,if=virtio
  Could not access KVM kernel module: No such file or directory
  failed to initialize KVM: No such file or directory
  Back to tcg accelerator.

  GLib-ERROR **: /build/buildd/glib2.0-2.31.20/./glib/gmem.c:165: failed to 
allocate 4293918720 bytes
  Trace/breakpoint trap (core dumped)

  Just for a test, I tried loading kvm-amd, got nested kvm
  virtualization, but the instance fails the same way.

  --
  [1] 
http://bazaar.launchpad.net/~ubuntu-on-ec2/vmbuilder/automated-ec2-builds/files/head:/loaders/
  [2] 
http://bazaar.launchpad.net/~ubuntu-on-ec2/vmbuilder/automated-ec2-builds/view/head:/mk-image-mb-loader

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: kvm (not installed)
  ProcVersionSignature: User Name 3.2.0-18.29-virtual 3.2.9
  Uname: Linux 3.2.0-18-virtual x86_64
  ApportVersion: 1.94.1-0ubuntu2
  Architecture: amd64
  CurrentDmesg:
   [27230.320857] init: qemu-kvm pre-start process (8659) terminated with 
status 1
   [27230.361904] init: qemu-kvm post-stop process (8664) terminated with 
status 1
   [27249.426836] kvm[9021] trap int3 ip:7f44c2bbc13b sp:7fff447e1120 error:0
   [27263.380598] kvm[9283] trap int3 ip:7f3fba9f713b sp:7fff8b55d1a0 error:0
  Date: Sat Mar 17 01:48:13 2012
  Ec2AMI: ami-00000000
  Ec2AMIManifest: FIXME
  Ec2AvailabilityZone: nova
  Ec2InstanceType: m1.small
  Ec2Kernel: unavailable
  Ec2Ramdisk: unavailable
  KvmCmdLine: Error: command ['ps', '-C', 'kvm', '-F'] failed with exit code 1: 
UID        PID  PPID  C    SZ   RSS PSR STIME TTY          TIME CMD
  Lsusb:
   Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd
  MachineType: Bochs Bochs
  ProcEnviron:
   TERM=screen
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-18-virtual 
root=LABEL=cloudimg-rootfs ro console=ttyS0
  ProcModules:
   acpiphp 24231 0 - Live 0x0000000000000000
   floppy 70365 0 - Live 0x0000000000000000
   psmouse 87603 0 - Live 0x0000000000000000
   serio_raw 13211 0 - Live 0x0000000000000000
   virtio_balloon 13108 0 - Live 0x0000000000000000
  SourcePackage: qemu-kvm
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/01/2007
  dmi.bios.vendor: Bochs
  dmi.bios.version: Bochs
  dmi.chassis.type: 1
  dmi.chassis.vendor: Bochs
  dmi.modalias: 
dmi:bvnBochs:bvrBochs:bd01/01/2007:svnBochs:pnBochs:pvr:cvnBochs:ct1:cvr:
  dmi.product.name: Bochs
  dmi.sys.vendor: Bochs

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