marionnet-dev team mailing list archive

[Luca Saiu <1165066@xxxxxxxxxxxxxxxxxx>]

Hello.  Thanks a lot for your bug report.

> the VM kernel crash when a user execute the following command :
> /sbin/ip link show dev eth0
>
> The kernel used is 3.0.8 with the marionnet patch.

Could you please confirm that an unpatched kernel (same version, without
ghostification support) doesn't crash in the same case?

> An odd behaviour : If the VM kernel is executed under root (directly the
> uml kernel, without marionnet) it works ; if the VM kernel is executed
> under another user, it crash.

Interesting, indeed.  Can you see what happens with gdb?  Otherwise,
Jean-Vincent: can you reproduce it?  (We might need to compile the kernel
with debugging symbols, using the -g option.)  If so, I can try
debugging it myself.

Thanks,

-- 
Luca Saiu
Home page:   http://ageinghacker.net
GNU epsilon: http://www.gnu.org/software/epsilon
Marionnet:   http://marionnet.org

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https://bugs.launchpad.net/bugs/1165066

Title:
  kernel crash

Status in Marionnet - A virtual network laboratory:
  New

Bug description:
  
  the VM kernel crash when a user execute the following command :
  /sbin/ip link show dev eth0

  The kernel used is 3.0.8 with the marionnet patch.

  An odd behaviour : If the VM kernel is executed under root (directly
  the uml kernel, without marionnet) it works ; if the VM kernel is
  executed under another user, it crash.

  This command "/sbin/ip link show dev eth0" is used by the ifup script when there it try to setup a vlan interface.
  For example if /etc/network/interfaces is :

  iface eth0 inet static
  address 10.10.10.1
  netmask 255.255.255.0

  iface eth0.100 inet static
  address 10.10.20.1
  netmask 255.255.255.0

  when the command "ifup eth0.100" is executed the kernel crash.

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