commit 7534432dcc3c654a8671b6b0cdffd1dbdbc73074

[Paul Menage]

On Thu, Jan 22, 2009 at 3:07 PM, Paul Menage <menage at google.com> wrote:
>> mount -t cgroup -o freezer,ns none /cgroup
>
> This command should have failed with EBUSY, since freezer is already
> part of an existing hierarchy. So I think it's a red herring in this
> problem.

But in fact taking out this line does stop the crash. So it's a bug in
the error handling when you try to mount a hierarchy with a subsystem
that's already busy elsewhere.

Paul