On Wed, Jan 11, 2012 at 10:25:50AM +0100, Hans Schillstrom wrote: > Hello > I got this the first time using conntrack -L when there is a lot of traffic. > It doesn't result in any thing bad yet. > > Is this a know thing ? No, you have been the first to spot this. > or should I dig into it.. > > I'm running the latest and greatest conntrack / netfilter tools and libs. > > =============================== > [ INFO: suspicious RCU usage. ] > ------------------------------- > /home/hans/evip.git/kvm/net-next.git/include/net/netfilter/nf_conntrack_l3proto.h:92 suspicious rcu_dereference_check() usage! We were using rcu in the table dumping time ago, but we had to replace rcu by spinlocks. ctnetlink_dump_tuples is used in both RCU context and spinlock context, this seems to be the problem. it seems I didn't enable RCU read lock verification in my kernels. I'll do it to catch up this sort of problems. thanks for the report. -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
