From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eyal perry Subject: ip6_udp_tunnel fails to load Date: Tue, 23 Sep 2014 18:21:17 +0300 Message-ID: <54218FED.4080102@dev.mellanox.co.il> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, Or Gerlitz , Amir Vadai To: Andy Zhou Return-path: Received: from mail-we0-f178.google.com ([74.125.82.178]:33940 "EHLO mail-we0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756056AbaIWPVU (ORCPT ); Tue, 23 Sep 2014 11:21:20 -0400 Received: by mail-we0-f178.google.com with SMTP id t60so4813121wes.37 for ; Tue, 23 Sep 2014 08:21:19 -0700 (PDT) Sender: netdev-owner@vger.kernel.org List-ID: Hello Andy, Lately I've start to observe a phenomena where the mlx4_en driver couldn't load on my system as a result of an 'Unknown symbol in module'. [ 1277.458715] ip6_udp_tunnel: Unknown symbol ip6_local_out (err 0) [ 1277.486810] ip6_udp_tunnel: Unknown symbol __put_net (err 0) Apparently, the mlx4_en driver is depend on the vxlan driver, which depends on the ip6_udp_tunnel module which fails to load. 1. I've bisected this issue down to the following commit: fd38441 udp_tunnel: Seperate ipv6 functions into its own file. 2. on a different host with a different .config, the module is loads cleanly. 3. my sources are based on net-next commit 6d967f8 udp_tunnel: Only build ip6_udp_tunnel.c when IPV6 is selected I'll send you both of the .config files in a private message. This issue is making any driver which is depend on vxlan/ip6_udp_tunnel unusable, please take a look and fix Best Regards, Eyal.