Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755111AbaBDTrz (ORCPT ); Tue, 4 Feb 2014 14:47:55 -0500 Received: from mail-gw1-out.broadcom.com ([216.31.210.62]:21382 "EHLO mail-gw1-out.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752828AbaBDTrw (ORCPT ); Tue, 4 Feb 2014 14:47:52 -0500 X-IronPort-AV: E=Sophos;i="4.95,781,1384329600"; d="scan'208";a="13103775" Subject: Re: igb and bnx2: "NETDEV WATCHDOG: transmit queue timed out" when skb has huge linear buffer From: Michael Chan To: Zoltan Kiss CC: Zoltan Kiss , Jeff Kirsher , Jesse Brandeburg , Bruce Allan , Carolyn Wyborny , Don Skidmore , "Greg Rose" , Peter P Waskiewicz Jr , Alex Duyck , John Ronciak , Tushar Dave , Akeem G Abodunrin , "David S. Miller" , , "netdev@vger.kernel.org" , , "xen-devel@lists.xenproject.org" In-Reply-To: <52EBA51E.808@citrix.com> References: <52EAA31B.1090606@schaman.hu> <1391114048.4804.2.camel@LTIRV-MCHAN1.corp.ad.broadcom.com> <52EBA51E.808@citrix.com> Content-Type: text/plain; charset="cp1252" Date: Tue, 4 Feb 2014 11:47:51 -0800 Message-ID: <1391543271.4804.44.camel@LTIRV-MCHAN1.corp.ad.broadcom.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/