YOSHIFUJI Hideaki wrote:
> In article <[EMAIL PROTECTED]> (at Tue, 7 Mar 2006 11:26:13 +0100), Ingo 
> Oeser <[EMAIL PROTECTED]> says:
> 
> > What about sth. like this simple defensive patch instead 
> > (against Linux 2.6.16-rc4)?
> 
> I disagree again. Sorry.

Fine with me. 

If somebody changes the struct rtable, he'll get a nice Oops 
while testing ipv6 and the problem won't last long.

So now I fully understand, why you keep rejecting this change :-)

Thanks for your patience with us. Maybe a comment would be helpful,
since this is "obviously not obvious".

Would you mind queueing a patch nearly citing your first comment like this?

--- net/ipv6/addrconf.c~        2006-02-17 23:23:45.000000000 +0100
+++ net/ipv6/addrconf.c 2006-03-07 12:54:41.000000000 +0100
@@ -713,6 +713,13 @@
                                rt->rt6i_flags |= RTF_EXPIRES;
                        }
                }
+        /*
+         * We don't mind rt being NULL, 
+         * because (void *)&rt->u.dst is equal to (void *)rt,
+         * and dst_release() checks its argument.
+         *
+         * If this assumption changes, we'll notice that quickly.
+         */
                dst_release(&rt->u.dst);
        }
 

Regards

Ingo Oeser
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