On 02/22/2013 12:06 PM, Antonio Quartulli wrote: > Hi Sasha and thank you very much for reporting this issue. > > IIRC this is similar to a bug you already reported in the past. > This bug should be the result of a race condition batman-adv has in the > hard-interface handling code (this is why it has been triggered while removing > eth0). > > Now that the rtnl-deadlock has been solved I think we can try to further > investigate on this bug and try to find a solution..though it will not be easy > as it probably requires another lock to protect the hard-interface during this > operations. > > If you have any fix proposal feel free to contribute!
I'm confused about how batadv_orig_hash_del_if removes an interface from the hashtable. I see the hashtable is using rcu to protect it, but when we delete an entry we free it straight away by calling batadv_orig_node_del_if() and not going through kfree_rcu(). Is there a reason behind doing that, or might it be the cause of the problem we're seeing here? Thanks, Sasha -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
