On Wed, Dec 26, 2007 at 07:56:42PM +0100, Jarek Poplawski wrote:
...

[PATCH 3/3] (for testing only)
---

diff -Nurp linux-2.6.23.12-/net/sched/sch_api.c 
linux-2.6.23.12+/net/sched/sch_api.c
--- linux-2.6.23.12-/net/sched/sch_api.c        2007-12-21 22:26:15.000000000 
+0100
+++ linux-2.6.23.12+/net/sched/sch_api.c        2007-12-26 13:35:46.000000000 
+0100
@@ -514,8 +514,11 @@ qdisc_create(struct net_device *dev, u32
                                 * a ops->reset() here? The qdisc was never
                                 * in action so it shouldn't be necessary.
                                 */
-                               if (ops->destroy)
+                               if (ops->destroy) {
+                                       qdisc_lock_tree(dev);
                                        ops->destroy(sch);
+                                       qdisc_unlock_tree(dev);
+                               }
                                goto err_out3;
                        }
                }
--
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