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

[Loïc Minier]

Ok; the commit you point at is in the current qemu-linaro package

Fix released in Ubuntu is when we upload a fixed source package to the
Ubuntu development release

The usual way to close Ubuntu bugs fixed with an upload is via the
debian/changelog, when Launchpad processes the .changes file with the
list of fixed bugs, it marks these fix released

If we need to track status in stable releases of Ubuntu, we use "Target
to series" to flag the ones where we need a different bug state

** 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