From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id ADE27CA9EBC for ; Thu, 24 Oct 2019 19:49:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8DDEE2166E for ; Thu, 24 Oct 2019 19:49:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2437366AbfJXTtA convert rfc822-to-8bit (ORCPT ); Thu, 24 Oct 2019 15:49:00 -0400 Received: from mga01.intel.com ([192.55.52.88]:59469 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2437273AbfJXTs7 (ORCPT ); Thu, 24 Oct 2019 15:48:59 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 24 Oct 2019 12:48:59 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,225,1569308400"; d="scan'208";a="399879464" Received: from vcostago-desk1.jf.intel.com (HELO vcostago-desk1) ([10.54.70.82]) by fmsmga006.fm.intel.com with ESMTP; 24 Oct 2019 12:48:59 -0700 From: Vinicius Costa Gomes To: Davidlohr Bueso , netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Subject: Re: WARNING: at net/sched/sch_generic.c:448 In-Reply-To: <20191024032105.xmewznsphltnrido@linux-p48b> References: <20191024032105.xmewznsphltnrido@linux-p48b> Date: Thu, 24 Oct 2019 12:50:11 -0700 Message-ID: <87mudpylcc.fsf@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 8BIT Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hi, Davidlohr Bueso writes: > Hi, > > I'm hitting the following in linux-next, and as far back as v5.2, ring any bells? > > [ 478.588144] NETDEV WATCHDOG: eth0 (igb): transmit queue 0 timed out > [ 478.601994] WARNING: CPU: 10 PID: 74 at net/sched/sch_generic.c:448 dev_watchdog+0x253/0x260 > [ 478.620613] Modules linked in: ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) ip_tables(E) x_tables(E) bpfilter(E) scsi_transport_iscsi(E) af_packet(E) iscsi_ibft(E) iscsi_boot_sysfs(E) ext4(E) intel_rapl_msr(E) intel_rapl_common(E) crc16(E) mbcache(E) jbd2(E) sb_edac(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) kvm_intel(E) kvm(E) irqbypass(E) crc32_pclmul(E) iTCO_wdt(E) ghash_clmulni_intel(E) iTCO_vendor_support(E) aesni_intel(E) crypto_simd(E) cryptd(E) glue_helper(E) ipmi_si(E) igb(E) ioatdma(E) pcspkr(E) ipmi_devintf(E) mei_me(E) lpc_ich(E) mfd_core(E) ipmi_msghandler(E) joydev(E) i2c_i801(E) mei(E) dca(E) button(E) btrfs(E) libcrc32c(E) xor(E) raid6_pq(E) hid_generic(E) usbhid(E) sd_mod(E) mgag200(E) drm_kms_helper(E) syscopyarea(E) sysfillrect(E) sysimgblt(E) fb_sys_fops(E) i2c_algo_bit(E) isci(E) ehci_pci(E) drm_vram_helper(E) ahci(E) ehci_hcd(E) libsas(E) crc32c_intel(E) ttm(E) libahci(E) scsi_transport_sas(E) drm(E) usbco re(E) > [ 478.620658] libata(E) wmi(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) > [ 478.837008] CPU: 10 PID: 74 Comm: ksoftirqd/10 Kdump: loaded Tainted: G E 5.4.0-rc4-2-default+ #2 > [ 478.859457] Hardware name: Intel Corporation LH Pass/SVRBD-ROW_P, BIOS SE5C600.86B.02.01.SP04.112220131546 11/22/2013 > [ 478.882867] RIP: 0010:dev_watchdog+0x253/0x260 Not ringing any bells, but if this timeout is happening, you should also be seeing some igb "TX Hang" warnings. Usually this warning happens when some packet is stuck (for whatever reason) in the transmission queue. Can you share more details about what you are running? specially the kind of configuration (if any) you are doing to the controller. Cheers, -- Vinicius