[Qemu-devel] [Bug 604872] Re: qemu-system-arm segfaults emulating versatile machine after running debootstrap --second-stage inside vm

[Peter Maydell]

** Changed in: qemu-linaro (Ubuntu)
       Status: Triaged => Fix Released

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https://bugs.launchpad.net/bugs/604872

Title:
  qemu-system-arm segfaults emulating versatile machine after running
  debootstrap --second-stage inside vm

Status in QEMU:
  Fix Committed
Status in “qemu-linaro” package in Ubuntu:
  Fix Released

Bug description:
  Binary package hint: qemu-kvm

  As I'm now implementing the support for creating a rootstock rootfs
  without requiring root, I need to run the deboostrap' second stage
  inside a VM, to correctly install the packages into the rootfs.

  qemu-system-arm fails right after debootstrap finish the second stage,
  giving a segmentation fault.

  Command:
  qemu-system-arm -M versatilepb -cpu cortex-a8 -kernel vmlinuz -no-reboot 
-nographic -drive file=qemu-armel-201007122016.img,aio=native,cache=none -m 256 
-append 'console=ttyAMA0,115200n8 root=/dev/sda rw mem=256M devtmpfs.mount=0 
init=/bin/installer'
  Uncompressing 
Linux.................................................................................................................................................................................................
 done, booting the kernel.
  [    0.000000] Initializing cgroup subsys cpuset
  [    0.000000] Initializing cgroup subsys cpu
  [    0.000000] Linux version 2.6.32-21-versatile (address@hidden) (gcc 
version 4.4.3 (Ubuntu 4.4.3-4ubuntu5) ) #32-Ubuntu Fri Apr 16 08:14:53 UTC 2010 
(Ubuntu 2.6.32-21.32-versatile 2.6.32.11+drm33.2)
  ...
  I: Base system installed successfully.
  I: Starting basic services in VM
  Segmentation fault (core dumped)

  [492816.197352] qemu-system-arm[16024]: segfault at ffffffffcf6ba8fc
  ip ffffffffcf6ba8fc sp 00007fffd0e68680 error 14

  Image:
   * rootfs: 
http://rsalveti.net/pub/ubuntu/rootstock/qemu-armel-201007122016.img (md5 
1d063ac8a65c798bb004cd1c4c7970c5)
   * kernel: 
http://ports.ubuntu.com/ubuntu-ports/dists/lucid/main/installer-armel/current/images/versatile/netboot/vmlinuz

  I'm able to reproduce the bug on Maverick (amd64) and Lucid (x86).

  Maverick qemu-kvm-extras: 0.12.4+noroms-0ubuntu4
  Lucid qemu-kvm-extras: 0.12.3+noroms-0ubuntu9.2

  ProblemType: Bug
  DistroRelease: Ubuntu 10.10
  Package: qemu-kvm-extras 0.12.4+noroms-0ubuntu4
  ProcVersionSignature: Ubuntu 2.6.35-6.9-generic 2.6.35-rc3
  Uname: Linux 2.6.35-6-generic x86_64
  Architecture: amd64
  Date: Mon Jul 12 18:55:35 2010
  InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427.1)
  KvmCmdLine: Error: command ['ps', '-C', 'kvm', '-F'] failed with exit code 1: 
UID        PID  PPID  C    SZ   RSS PSR STIME TTY          TIME CMD
  MachineType: LENOVO 2764CTO
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     no card
  ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.35-6-generic 
root=/dev/mapper/primary-root ro crashkernel=384M-2G:64M,2G-:128M quiet splash
  ProcEnviron:
   LANG=en_US.utf8
   SHELL=/bin/bash
  SourcePackage: qemu-kvm
  dmi.bios.date: 04/19/2010
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 7UET86WW (3.16 )
  dmi.board.name: 2764CTO
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: 
dmi:bvnLENOVO:bvr7UET86WW(3.16):bd04/19/2010:svnLENOVO:pn2764CTO:pvrThinkPadT400:rvnLENOVO:rn2764CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 2764CTO
  dmi.product.version: ThinkPad T400
  dmi.sys.vendor: LENOVO