[lxc-users] kernel crash when starting an unprivileged container

[Tomasz Chmielewski]

On 2015-06-03 15:01, Tomasz Chmielewski wrote:
> I'm trying to start an unprivileged container on Ubuntu 14.04;
> unfortunately, the kernel crashes.
> 
> # lxc-create -t download -n test-container
(...)
> # lxc-start -n test-container -F
> 
> Kernel crashes at this point.
> 
> It does not crash if I start the container as privileged.
> 
> - kernel used is 4.0.4-040004-generic from
> http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.0.4-wily/

The issue was a bit weird:

- I've updated the kernel to 4.1-rc6, no longer crashing

- still, the container was not starting on 4.1-rc6

- it turned out that "lxc-create -t download ..." created the container 
with all files being 0-bytes for some reason (so, 0-byte /sbin/init and 
all other files being 0-byte)

- "exec file format" (0-byte /sbin/init) was causing 4.0.4 kernel crash?


Anyway, problem solved.


-- 
Tomasz Chmielewski
http://wpkg.org