From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Hutchings Subject: Re: ixgbe: RTNL assertion failed Date: Sat, 4 May 2013 02:54:06 +0100 Message-ID: <20130504015406.GP2619@decadent.org.uk> References: <20130503120907.4f13d41b@nehalam.linuxnetplumber.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Stephen Hemminger , "Kirsher, Jeffrey T" , "netdev@vger.kernel.org" To: "Skidmore, Donald C" Return-path: Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:35311 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932306Ab3EDByN (ORCPT ); Fri, 3 May 2013 21:54:13 -0400 Content-Disposition: inline In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: On Fri, May 03, 2013 at 11:17:39PM +0000, Skidmore, Donald C wrote: > > -----Original Message----- > > From: netdev-owner@vger.kernel.org [mailto:netdev- > > owner@vger.kernel.org] On Behalf Of Stephen Hemminger > > Sent: Friday, May 03, 2013 12:09 PM > > To: Kirsher, Jeffrey T > > Cc: netdev@vger.kernel.org > > Subject: ixgbe: RTNL assertion failed > > > > Running 3.9 kernel, ixgbe is splatting on resume from suspend. > > > > [26430.213254] ixgbe 0000:01:00.0: setting latency timer to 64 [26430.213257] > > RTNL: assertion failed at /build/buildd-linux_3.2.41-2-amd64-Wvc92F/linux- > > 3.2.41/net/core/dev.c (1758) [26430.213259] Pid: 7839, comm: kworker/u:1 > > Not tainted 3.2.0-4-amd64 #1 Debian 3.2.41-2 [26430.213261] Call Trace: [...] > I'm having a little problem finding a path were we call netif_set_real_num_tx_queues without holding RTNL in net-next. While looking over the stack dump one of our engineers noticed the text "Not tainted 3.2.0-4-amd64 #1 Debian 3.2.41-2 ". Could this mean I'm looking over the wrong source? It would make me feel better as I'm not seeing anything as is. :) Indeed, this is not 3.9. The version of ixgbe in this Debian kernel has bql support backported, but is otherwise the same as in 3.2.41. I assume that this bug has been fixed some time between 3.2 and 3.9, but no-one requested that the fix be included in stable branches. Please can you identify the fix? Ben. -- Ben Hutchings We get into the habit of living before acquiring the habit of thinking. - Albert Camus