[openib-general] Re: IPoIB oops when removing ib_ipoib module

[Roland Dreier]

    Hal> With the latest OpenIB svn, I got the following oops when
    Hal> attempting to remove the ib_ipoib module on x86 with 2.6.15.

Hmm, I can't understand what's going on here, nor can I reproduce it.
Can you try to get it to happen with the patch below applied?

Thanks,
  Roland

Index: infiniband/ulp/ipoib/ipoib_main.c
===================================================================
--- infiniband/ulp/ipoib/ipoib_main.c	(revision 5911)
+++ infiniband/ulp/ipoib/ipoib_main.c	(working copy)
@@ -814,6 +814,8 @@ void ipoib_neigh_free(struct ipoib_neigh
 		if (nn->neighbour->ops == neigh->neighbour->ops)
 			goto found;
 
+	BUG_ON(!neigh->neighbour);
+	BUG_ON(!neigh->neighbour->ops);
 	neigh->neighbour->ops->destructor = NULL;
 found:
 	spin_unlock(&ipoib_all_neigh_list_lock);