Re: [PATCH net v3] ovs: limit ovs recursions in ovs_execute_actions to not corrupt stack
From: Hannes Frederic Sowa <hidden>
Date: 2016-01-15 16:51:42
On 15.01.2016 17:45, Eric Dumazet wrote:
On Fri, 2016-01-15 at 15:33 +0100, Hannes Frederic Sowa wrote:quoted
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....quoted
+ + preempt_disable(); + level = __this_cpu_inc_return(exec_actions_level); + if (level > ovs_recursion_limit) {if (unlikely(level > ovs_recursion_limit)) {
Thanks, I added it! Bye, Hannes _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev