From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: Re: sky2 tx watchdog timeout with 1Gb speed Date: Mon, 21 Nov 2011 16:05:43 -0800 Message-ID: <20111121160543.2ae9c04c@nehalam.linuxnetplumber.net> References: <20111120232118.GA29748@ntm.wq.cz> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org To: Milan Kocian Return-path: Received: from mail.vyatta.com ([76.74.103.46]:33284 "EHLO mail.vyatta.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752633Ab1KVAFv (ORCPT ); Mon, 21 Nov 2011 19:05:51 -0500 In-Reply-To: <20111120232118.GA29748@ntm.wq.cz> Sender: netdev-owner@vger.kernel.org List-ID: On Mon, 21 Nov 2011 00:21:18 +0100 Milan Kocian wrote: > hi all, > > I switched my home pc from 100Mb/s to 1000Mb/s and I see > this warning below. > > The original kernel was 2.6.39.4 then I tested 3.1.1 with the same > result. (self compiled 32bit vanilla). The workaround is to force 10/100 speed > on my new switch (hp). > > lspci: > > 03:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8056 PCI-E Gigabit Ethernet Controller (rev 13) > Subsystem: Giga-byte Technology Device e000 > Flags: bus master, fast devsel, latency 0, IRQ 45 > Memory at f5000000 (64-bit, non-prefetchable) [size=16K] > I/O ports at 9000 [size=256] > [virtual] Expansion ROM at 80300000 [disabled] [size=128K] > Capabilities: [48] Power Management version 3 > Capabilities: [50] Vital Product Data > Capabilities: [5c] MSI: Enable+ Count=1/1 Maskable- 64bit+ > Capabilities: [e0] Express Legacy Endpoint, MSI 00 > Capabilities: [100] Advanced Error Reporting > Kernel driver in use: sky2 > > > Nov 20 21:32:54 milu kernel: sky2 0000:03:00.0: eth0: Link is up at 1000 Mbps, full duplex, flow control both > Nov 20 21:35:29 milu kernel: ------------[ cut here ]------------ > Nov 20 21:35:29 milu kernel: WARNING: at net/sched/sch_generic.c:255 dev_watchdog+0x1fa/0x206() > Nov 20 21:35:29 milu kernel: Hardware name: 965GM-S2 > Nov 20 21:35:29 milu kernel: NETDEV WATCHDOG: eth0 (sky2): transmit queue 0 timed out > Nov 20 21:35:29 milu kernel: Modules linked in: parport_pc parport fuse nfsd ipv6 nfs lockd auth_rpcgss nfs_acl sunrpc usbhid snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_intel8x0 sg snd_ac97_codec sr_mod ac97_bus cdrom sky2 snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss intel_agp snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd bitrev i2c_i801 crc32 intel_gtt uhci_hcd i2c_core ehci_hcd soundcore usbcore agpgart evdev snd_page_alloc > Nov 20 21:35:29 milu kernel: Pid: 0, comm: swapper Not tainted 3.1.1 #2 > Nov 20 21:35:29 milu kernel: Call Trace: > Nov 20 21:35:29 milu kernel: [] ? warn_slowpath_common+0x6c/0x94 > Nov 20 21:35:29 milu kernel: [] ? dev_watchdog+0x1fa/0x206 > Nov 20 21:35:29 milu kernel: [] ? dev_watchdog+0x1fa/0x206 > Nov 20 21:35:29 milu kernel: [] ? warn_slowpath_fmt+0x33/0x37 > Nov 20 21:35:29 milu kernel: [] ? dev_watchdog+0x1fa/0x206 > Nov 20 21:35:29 milu kernel: [] ? qdisc_reset+0x2d/0x2d > Nov 20 21:35:29 milu kernel: [] ? run_timer_softirq+0xc6/0x1c4 > Nov 20 21:35:29 milu kernel: [] ? run_rebalance_domains+0x148/0x169 > Nov 20 21:35:29 milu kernel: [] ? __do_softirq+0x6e/0xea > Nov 20 21:35:29 milu kernel: [] ? remote_softirq_receive+0x11/0x11 > Nov 20 21:35:29 milu kernel: [] ? irq_exit+0x5b/0x67 > Nov 20 21:35:29 milu kernel: [] ? smp_apic_timer_interrupt+0x51/0x81 > Nov 20 21:35:29 milu kernel: [] ? apic_timer_interrupt+0x2a/0x30 > Nov 20 21:35:29 milu kernel: [] ? asus_hides_smbus_hostbridge+0xcb/0x249 > Nov 20 21:35:29 milu kernel: [] ? mwait_idle+0x41/0x51 > Nov 20 21:35:29 milu kernel: [] ? cpu_idle+0x74/0x84 > Nov 20 21:35:29 milu kernel: [] ? start_kernel+0x28a/0x28f > Nov 20 21:35:29 milu kernel: [] ? loglevel+0x2b/0x2b > Nov 20 21:35:29 milu kernel: ---[ end trace ef84175f674c7842 ]--- > Nov 20 21:35:29 milu kernel: sky2 0000:03:00.0: eth0: tx timeout > Nov 20 21:35:29 milu kernel: sky2 0000:03:00.0: eth0: transmit ring 52 .. 30 report=52 done=52 > Nov 20 21:35:32 milu kernel: sky2 0000:03:00.0: eth0: Link is up at 1000 Mbps, full duplex, flow control both > Nov 20 21:37:13 milu kernel: sky2 0000:03:00.0: eth0: tx timeout > Nov 20 21:37:13 milu kernel: sky2 0000:03:00.0: eth0: transmit ring 37 .. 15 report=37 done=37 > Nov 20 21:37:16 milu kernel: sky2 0000:03:00.0: eth0: Link is up at 1000 Mbps, full duplex, flow control both > > Any suggestion ? As I said its home machine so I can test what you want :-). I haven't seen this, is it under heavy or light traffic. Are you running something that might cause device to miss interrupts?