From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: igb and bnx2: "NETDEV WATCHDOG: transmit queue timed out" when skb has huge linear buffer Date: Wed, 5 Feb 2014 20:43:46 +0000 Message-ID: <52F2A282.5040502@citrix.com> References: <52EAA31B.1090606@schaman.hu> <1391114048.4804.2.camel@LTIRV-MCHAN1.corp.ad.broadcom.com> <52EBA51E.808@citrix.com> <1391543271.4804.44.camel@LTIRV-MCHAN1.corp.ad.broadcom.com> <52F29DDC.7010908@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: linux-kernel@vger.kernel.org, Carolyn, Tushar, e1000-devel@lists.sourceforge.net, Bruce Allan , Jesse Brandeburg , "David S. Miller" , John Ronciak , "netdev@vger.kernel.org" , "xen-devel@lists.xenproject.org" To: Zoltan Kiss , Michael Chan Return-path: In-Reply-To: <52F29DDC.7010908@citrix.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: e1000-devel-bounces@lists.sourceforge.net List-Id: netdev.vger.kernel.org On 05/02/2014 20:23, Zoltan Kiss wrote: > On 04/02/14 19:47, Michael Chan wrote: >> On Fri, 2014-01-31 at 14:29 +0100, Zoltan Kiss wrote: >>> [ 5417.275472] WARNING: at net/sched/sch_generic.c:255 >>> dev_watchdog+0x156/0x1f0() >>> [ 5417.275474] NETDEV WATCHDOG: eth1 (bnx2): transmit queue 2 timed out >> >> The dump shows an internal IRQ pending on MSIX vector 2 which matches >> the the queue number that is timing out. I don't know what happened to >> the MSIX and why the driver is not seeing it. Do you see an IRQ error >> message from the kernel a few seconds before the tx timeout message? > > I haven't seen any IRQ related error message. Note, this is on Xen > 4.3.1. Now I have new results with a reworked version of the patch, > unfortunately it still has this issue. Here is a bnx2 dump, lspci > output and some Xen debug output (MSI and interrupt bindings, I have > more if needed). You need debug-keys 'Q' as well to map between the PCI devices and Xen IRQs ~Andrew ------------------------------------------------------------------------------ Managing the Performance of Cloud-Based Applications Take advantage of what the Cloud has to offer - Avoid Common Pitfalls. Read the Whitepaper. http://pubads.g.doubleclick.net/gampad/clk?id=121051231&iu=/4140/ostg.clktrk _______________________________________________ E1000-devel mailing list E1000-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/e1000-devel To learn more about Intel® Ethernet, visit http://communities.intel.com/community/wired