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Date: Sun, 5 Feb 2012 14:29:46 -0800
From: "Justin P. Mattock" <justinmattock@gmail.com>
To: Larry Finger <Larry.Finger@lwfinger.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: WARNING: at net/sched/sch_generic.c:256
 dev_watchdog+0x1f2/0x200()
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On Sun, 05 Feb 2012 16:19:17 -0600
Larry Finger <Larry.Finger@lwfinger.net> wrote:

> On 02/05/2012 03:40 PM, Justin P. Mattock wrote:
> >
> > this showed up as I woke the machine up from suspend. machine is connected
> > I just see networkmanager constantly spinning trying to connect then telling me
> > the wired network is not connected(even though its just wireless that I have).
> >
> >
> > [ 1584.693284] wlan0: authenticate with 00:1e:2a:62:6b:1e (try 1)
> > [ 1584.695279] wlan0: authenticated
> > [ 1584.699289] wlan0: associate with 00:1e:2a:62:6b:1e (try 1)
> > [ 1584.703037] wlan0: RX AssocResp from 00:1e:2a:62:6b:1e (capab=0x31 status=0 aid=5)
> > [ 1584.703043] wlan0: associated
> > [ 1584.703054] wlan0: moving STA 00:1e:2a:62:6b:1e to state 1
> > [ 1584.703058] wlan0: moving STA 00:1e:2a:62:6b:1e to state 2
> > [ 1584.722127] wlan0: moving STA 00:1e:2a:62:6b:1e to state 3
> > [ 2270.546555] ------------[ cut here ]------------
> > [ 2270.546572] WARNING: at net/sched/sch_generic.c:256 dev_watchdog+0x1f2/0x200()
> > [ 2270.546576] Hardware name: 0914
> > [ 2270.546580] NETDEV WATCHDOG: eth0 (r8169): transmit queue 0 timed out
> > [ 2270.546584] Modules linked in: parport_pc ppdev ipt_REJECT ipt_LOG xt_limit xt_tcpudp dm_crypt joydev xt_addrtype arc4 ath9k snd_hda_codec_hdmi snd_hda_codec_conexant mac80211 snd_hda_intel snd_hda_codec snd_hwdep snd_pcm xt_state snd_seq_midi snd_rawmidi nf_conntrack_netbios_ns snd_seq_midi_event nf_conntrack_broadcast snd_seq nf_nat_ftp nf_nat ath9k_common ath9k_hw nf_conntrack_ipv4 nf_defrag_ipv4 uvcvideo ath snd_timer snd_seq_device snd nf_conntrack_ftp videobuf2_core cfg80211 nf_conntrack iptable_filter mei(C) ip_tables intel_ips ideapad_laptop sparse_keymap psmouse lp parport soundcore snd_page_alloc videodev videobuf2_vmalloc x_tables wmi serio_raw videobuf2_memops i915 drm_kms_helper r8169 drm i2c_algo_bit usbhid hid video
> > [ 2270.546701] Pid: 0, comm: swapper/1 Tainted: G         C   3.3.0-rc2-00172-g23783f8 #1
> > [ 2270.546705] Call Trace:
> > [ 2270.546716]  [<c1042d02>] warn_slowpath_common+0x72/0xa0
> > [ 2270.546724]  [<c14d59d2>] ? dev_watchdog+0x1f2/0x200
> > [ 2270.546730]  [<c14d59d2>] ? dev_watchdog+0x1f2/0x200
> > [ 2270.546735]  [<c1042dd3>] warn_slowpath_fmt+0x33/0x40
> > [ 2270.546742]  [<c14d59d2>] dev_watchdog+0x1f2/0x200
> > [ 2270.546760]  [<c1053c52>] run_timer_softirq+0x132/0x520
> > [ 2270.546766]  [<c1053bd8>] ? run_timer_softirq+0xb8/0x520
> > [ 2270.546774]  [<c10d0f5c>] ? __rcu_process_callbacks+0x4c/0x3c0
> > [ 2270.546780]  [<c14d57e0>] ? pfifo_fast_init+0x60/0x60
> > [ 2270.546789]  [<c104ace7>] __do_softirq+0x97/0x340
> > [ 2270.546796]  [<c104ac50>] ? __tasklet_hi_schedule_first+0x120/0x120
> > [ 2270.546799]<IRQ>   [<c104b236>] ? irq_exit+0x86/0xb0
> > [ 2270.546813]  [<c158fef9>] ? smp_apic_timer_interrupt+0x59/0x88
> > [ 2270.546822]  [<c12c1028>] ? trace_hardirqs_off_thunk+0xc/0x14
> > [ 2270.546828]  [<c1588662>] ? apic_timer_interrupt+0x36/0x3c
> > [ 2270.546836]  [<c10a007b>] ? print_kernel_ident+0x4b/0x50
> > [ 2270.546844]  [<c1308987>] ? intel_idle+0xd7/0x130
> > [ 2270.546853]  [<c14773f0>] ? cpuidle_idle_call+0xb0/0x500
> > [ 2270.546859]  [<c10a48f4>] ? trace_hardirqs_on_caller+0xf4/0x180
> > [ 2270.546868]  [<c1014a85>] ? cpu_idle+0xa5/0xf0
> > [ 2270.546874]  [<c1579545>] ? start_secondary+0x21c/0x222
> > [ 2270.546879] ---[ end trace 22be394e4d8a72e0 ]---
> > [ 2270.617566] r8169 0000:06:00.0: eth0: link up693284] wlan0: authenticate with 00:1e:2a:62:6b:1e (try 1)
> > [ 1584.695279] wlan0: authenticated
> > [ 1584.699289] wlan0: associate with 00:1e:2a:62:6b:1e (try 1)
> > [ 1584.703037] wlan0: RX AssocResp from 00:1e:2a:62:6b:1e (capab=0x31 status=0 aid=5)
> > [ 1584.703043] wlan0: associated
> > [ 1584.703054] wlan0: moving STA 00:1e:2a:62:6b:1e to state 1
> > [ 1584.703058] wlan0: moving STA 00:1e:2a:62:6b:1e to state 2
> > [ 1584.722127] wlan0: moving STA 00:1e:2a:62:6b:1e to state 3
> > [ 2270.546555] ------------[ cut here ]------------
> > [ 2270.546572] WARNING: at net/sched/sch_generic.c:256 dev_watchdog+0x1f2/0x200()
> > [ 2270.546576] Hardware name: 0914
> > [ 2270.546580] NETDEV WATCHDOG: eth0 (r8169): transmit queue 0 timed out
> > [ 2270.546584] Modules linked in: parport_pc ppdev ipt_REJECT ipt_LOG xt_limit xt_tcpudp dm_crypt joydev xt_addrtype arc4 ath9k snd_hda_codec_hdmi snd_hda_codec_conexant mac80211 snd_hda_intel snd_hda_codec snd_hwdep snd_pcm xt_state snd_seq_midi snd_rawmidi nf_conntrack_netbios_ns snd_seq_midi_event nf_conntrack_broadcast snd_seq nf_nat_ftp nf_nat ath9k_common ath9k_hw nf_conntrack_ipv4 nf_defrag_ipv4 uvcvideo ath snd_timer snd_seq_device snd nf_conntrack_ftp videobuf2_core cfg80211 nf_conntrack iptable_filter mei(C) ip_tables intel_ips ideapad_laptop sparse_keymap psmouse lp parport soundcore snd_page_alloc videodev videobuf2_vmalloc x_tables wmi serio_raw videobuf2_memops i915 drm_kms_helper r8169 drm i2c_algo_bit usbhid hid video
> > [ 2270.546701] Pid: 0, comm: swapper/1 Tainted: G         C   3.3.0-rc2-00172-g23783f8 #1
> > [ 2270.546705] Call Trace:
> > [ 2270.546716]  [<c1042d02>] warn_slowpath_common+0x72/0xa0
> > [ 2270.546724]  [<c14d59d2>] ? dev_watchdog+0x1f2/0x200
> > [ 2270.546730]  [<c14d59d2>] ? dev_watchdog+0x1f2/0x200
> > [ 2270.546735]  [<c1042dd3>] warn_slowpath_fmt+0x33/0x40
> > [ 2270.546742]  [<c14d59d2>] dev_watchdog+0x1f2/0x200
> > [ 2270.546760]  [<c1053c52>] run_timer_softirq+0x132/0x520
> > [ 2270.546766]  [<c1053bd8>] ? run_timer_softirq+0xb8/0x520
> > [ 2270.546774]  [<c10d0f5c>] ? __rcu_process_callbacks+0x4c/0x3c0
> > [ 2270.546780]  [<c14d57e0>] ? pfifo_fast_init+0x60/0x60
> > [ 2270.546789]  [<c104ace7>] __do_softirq+0x97/0x340
> > [ 2270.546796]  [<c104ac50>] ? __tasklet_hi_schedule_first+0x120/0x120
> > [ 2270.546799]<IRQ>   [<c104b236>] ? irq_exit+0x86/0xb0
> > [ 2270.546813]  [<c158fef9>] ? smp_apic_timer_interrupt+0x59/0x88
> > [ 2270.546822]  [<c12c1028>] ? trace_hardirqs_off_thunk+0xc/0x14
> > [ 2270.546828]  [<c1588662>] ? apic_timer_interrupt+0x36/0x3c
> > [ 2270.546836]  [<c10a007b>] ? print_kernel_ident+0x4b/0x50
> > [ 2270.546844]  [<c1308987>] ? intel_idle+0xd7/0x130
> > [ 2270.546853]  [<c14773f0>] ? cpuidle_idle_call+0xb0/0x500
> > [ 2270.546859]  [<c10a48f4>] ? trace_hardirqs_on_caller+0xf4/0x180
> > [ 2270.546868]  [<c1014a85>] ? cpu_idle+0xa5/0xf0
> > [ 2270.546874]  [<c1579545>] ? start_secondary+0x21c/0x222
> > [ 2270.546879] ---[ end trace 22be394e4d8a72e0 ]---
> > [ 2270.617566] r8169 0000:06:00.0: eth0: link up
> >
> > full dmesg is here..:
> > http://fpaste.org/007p/
> 
> The error clearly comes from r8169, not from ath9k. If you unload r8169 before 
> suspending, does this still happen? My suspicion is that NM is getting confused.
> 
> Larry
> 
> P.S. Unless it happens with just the ath9k active, this ML is likely not the 
> correct one.
as a quick test I unloaded r8169 and did not see this message, but I also added it in and suspended
and no warning message as well. I will keep an eye out for this and see if I can reproduce this.
(if so a bisect should not take to long) as for lists I can go and remove linux-wireless

-- 
Justin P. Mattock <justinmattock@gmail.com>
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