On Fri, 2016-01-15 at 15:33 +0100, Hannes Frederic Sowa wrote:
> It was seen that defective configurations of openvswitch could overwrite
> the STACK_END_MAGIC and cause a hard crash of the kernel because of too
> many recursions within ovs.
...
> +
> + preempt_disable();
> + level = __this_cpu_inc_return(exec_actions_level);
> + if (level > ovs_recursion_limit) {
if (unlikely(level > ovs_recursion_limit)) {
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