From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: [Bug #15704] [r8169] WARNING: at net/sched/sch_generic.c Date: Mon, 26 Jul 2010 16:34:33 +0200 Message-ID: <1280154873.2899.390.camel@edumazet-laptop> References: <20100726131629.GA4398@swordfish.minsk.epam.com> Mime-Version: 1.0 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:subject:from:to:cc :in-reply-to:references:content-type:date:message-id:mime-version :x-mailer:content-transfer-encoding; bh=pjI/+HJYpzFJbIBX3CATAiXGY1nzfYn7hBgn+ywLEFg=; b=lYu+T2Kyy55WVEieXoDwG4hDxHSge/Ip8mt99+Xaa10WZYcprUDQx40nM7tySMBs6E foEzwql/faUDRJm0D5uov24GSzARhulrY2fAkTC/5lCRXxy3MVHB6Ro0n9v9oHY/TqFF L2wsUcYTCNP4AassU6jcvpCn2mmC0uEz2V+TA= In-Reply-To: <20100726131629.GA4398@swordfish.minsk.epam.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="utf-8" To: Sergey Senozhatsky Cc: "Rafael J. Wysocki" , Linux Kernel Mailing List , Kernel Testers List , Maciej Rutecki , netdev Le lundi 26 juillet 2010 =C3=A0 16:16 +0300, Sergey Senozhatsky a =C3=A9= crit : > On (07/23/10 14:15), Rafael J. Wysocki wrote: > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=3D15704 > > Subject : [r8169] WARNING: at net/sched/sch_generic.c > > Submitter : Sergey Senozhatsky > > Date : 2010-03-31 10:21 (115 days old) > > Message-ID : <20100331102142.GA3294@swordfish.minsk.epam.com> > > References : http://marc.info/?l=3Dlinux-kernel&m=3D127003090406108= &w=3D2 > >=20 > >=20 >=20 > Hello, > Sorry for the dealy - I've been away. > So, the bad news are that this is probably the last time I can test t= his bug. This laptop will > no longer be available. Sorry. >=20 >=20 > [ 2599.495508] pktgen 2.73: Packet Generator for packet performance t= esting. > [ 2630.016019] ------------[ cut here ]------------ > [ 2630.016031] WARNING: at net/sched/sch_generic.c:258 dev_watchdog+0= xc1/0x129() > [ 2630.016035] Hardware name: F3JC =20 > [ 2630.016038] NETDEV WATCHDOG: eth0 (r8169): transmit queue 0 timed = out > [ 2630.016041] Modules linked in: pktgen ipv6 arc4 ecb iwl3945 snd_hw= dep iwlcore snd_seq_dummy snd_hda_codec_si3054 snd_hda_codec_realtek sn= d_seq_oss snd_seq_midi_event snd_seq snd_seq_device mac80211 snd_pcm_os= s snd_mixer_oss asus_laptop > snd_hda_intel sparse_keymap sdhci_pci sdhci mmc_core led_class cfg802= 11 snd_hda_codec snd_pcm snd_timer snd_page_alloc snd rng_core soundcor= e usb_storage sg psmouse evdev i2c_i801 serio_raw r8169 mii uhci_hcd eh= ci_hcd sd_mod sr_mod usbcore > cdrom ata_piix > [ 2630.016114] Pid: 4282, comm: kpktgend_0 Not tainted 2.6.35-rc6-dbg= -git1-00136-g459ab2a-dirty #75 > [ 2630.016118] Call Trace: > [ 2630.016125] [] warn_slowpath_common+0x65/0x7a > [ 2630.016131] [] ? dev_watchdog+0xc1/0x129 > [ 2630.016136] [] warn_slowpath_fmt+0x26/0x2a > [ 2630.016142] [] dev_watchdog+0xc1/0x129 > [ 2630.016149] [] ? run_timer_softirq+0x136/0x22b > [ 2630.016154] [] run_timer_softirq+0x18f/0x22b > [ 2630.016160] [] ? run_timer_softirq+0x136/0x22b > [ 2630.016165] [] ? dev_watchdog+0x0/0x129 > [ 2630.016171] [] __do_softirq+0x88/0x10c > [ 2630.016177] [] do_softirq+0x2f/0x47 > [ 2630.016182] [] irq_exit+0x38/0x75 > [ 2630.016187] [] smp_apic_timer_interrupt+0x5f/0x6d > [ 2630.016195] [] ? pktgen_xmit+0xda2/0xe6f [pktgen] > [ 2630.016202] [] apic_timer_interrupt+0x36/0x3c > [ 2630.016208] [] ? pktgen_xmit+0xda2/0xe6f [pktgen] > [ 2630.016214] [] ? pktgen_xmit+0xda2/0xe6f [pktgen] > [ 2630.016220] [] ? __kfifo_peek_n+0x13/0x2b > [ 2630.016226] [] ? _local_bh_enable_ip+0x9d/0xb3 > [ 2630.016231] [] local_bh_enable_ip+0x8/0xa > [ 2630.016236] [] _raw_spin_unlock_bh+0x2f/0x32 > [ 2630.016242] [] pktgen_xmit+0xda2/0xe6f [pktgen] > [ 2630.016253] [] ? rtl8169_start_xmit+0x0/0x307 [r8169] > [ 2630.016261] [] ? plist_add+0x85/0x87 > [ 2630.016267] [] ? pktgen_thread_worker+0x96/0x5c3 [pktge= n] > [ 2630.016273] [] ? get_parent_ip+0xb/0x31 > [ 2630.016279] [] ? sub_preempt_count+0x7c/0x89 > [ 2630.016285] [] pktgen_thread_worker+0x170/0x5c3 [pktgen= ] > [ 2630.016290] [] ? schedule+0x535/0x545 > [ 2630.016296] [] ? autoremove_wake_function+0x0/0x2f > [ 2630.016301] [] ? autoremove_wake_function+0x0/0x2f > [ 2630.016307] [] ? pktgen_thread_worker+0x0/0x5c3 [pktgen= ] > [ 2630.016313] [] kthread+0x6a/0x6f > [ 2630.016318] [] ? kthread+0x0/0x6f > [ 2630.016324] [] kernel_thread_helper+0x6/0x10 > [ 2630.016328] ---[ end trace 0bdadff7f249bd0d ]--- > [ 2630.032549] r8169 0000:02:00.0: eth0: link up >=20 >=20 > Sergey r8169 driver misses a netif_carrier_off() call somewhere, probably when adapter is reset Sergey, do you run a pktgen only test (sending packets, and not receiving packets during the test), or a mixed workload ? r8169 is known to reset if the RX ring buffer is stressed too much.