[Qemu-devel] [Bug 532733] Re: apt/dpkg in qemu-system-arm hangs if a big task is installed

[Ricardo Salveti]

I'm now implementing the support for creating a rootstock rootfs without
requiring root, and I also got stuck at a segmentation fault, just after
executing the debootstrap' second stage.

I'm running the qemu-system-arm from qemu-kvm-extras 0.12.4+noroms-
0ubuntu4, at maverick.

My qemu command line:
qemu-system-arm -M versatilepb -cpu cortex-a8 -kernel qemu-vmlinuz -no-reboot 
-nographic -drive file=qemu-armel-rootstock.img,aio=native,cache=none -m 256 
-append 'console=ttyAMA0,115200n8 root=/dev/sda rw mem=256M init=/bin/installer'
Uncompressing 
Linux.................................................................................................................................................................................................
 done, booting the kernel.
[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
...
...
I: Configuring initramfs-tools...
I: Base system installed successfully.
I: Starting basic services in VM
[  912.758337] udev: starting version 151
Adding `local diversion of /usr/sbin/invoke-rc.d to 
/usr/sbin/invoke-rc.d.rootstock'
[  913.623614] eth0: link up
Internet Systems Consortium DHCP Client V3.1.3
Copyright 2004-2009 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/eth0/52:54:00:12:34:56
Sending on   LPF/eth0/52:54:00:12:34:56
Sending on   Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 7
DHCPOFFER of 10.0.2.15 from 10.0.2.2
DHCPREQUEST of 10.0.2.15 on eth0 to 255.255.255.255 port 67
DHCPACK of 10.0.2.15 from 10.0.2.2
bound to 10.0.2.15 -- renewal in 34170 seconds.
Generating locales...
  en_GB.UTF-8... done
Segmentation fault (core dumped)

[436282.681876] qemu-system-arm[4435]: segfault at ffffffffcd7797cc ip
ffffffffcd7797cc sp 00007fffa42e3070 error 14

For testing and debugging purposes, I'm also uploading the rootstock
image to my server (if you want to test, wait at least 2 hours and make
sure to check the md5).

Image:
 * rootfs: http://rsalveti.net/pub/ubuntu/rootstock/qemu-armel-rootstock.img 
(md5 356b497edddec08ff19f2ef545b4e207)
 * kernel: 
http://ports.ubuntu.com/ubuntu-ports/dists/lucid/main/installer-armel/current/images/versatile/netboot/vmlinuz

Going to get some sleep now but tomorrow will try qemu with gdb and also
with the current upstream version.

-- 
apt/dpkg in qemu-system-arm hangs if a big task is installed
https://bugs.launchpad.net/bugs/532733
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Status in QEMU: Invalid
Status in “qemu-kvm” package in Ubuntu: Incomplete
Status in “qemu-kvm” source package in Lucid: Incomplete

Bug description:
Binary package hint: qemu-kvm

running rootstock and installing ubuntu-netbook^ makes the VM hang in 
"unpacking iso-codes" this is reproducable every time in rootstock as well as 
in a standard qemu-system-arm vm that contains a minimal ubuntu with running 
apt-get install ubuntu-netbook