Re: [OpenWrt-Tickets] [OpenWrt] #18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out

[OpenWrt]

#18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out
+
  Reporter:  openwrt@…  |  Owner:  developers
  Type:  defect | Status:  reopened
  Priority:  normal |  Milestone:  Chaos Calmer 15.05
 Component:  kernel |Version:  Trunk
Resolution: |   Keywords:
+

Comment (by anonymous):

 As mentioned in the first message of this thread, this also is true here:
 If I boot the device without the Ethernet cable connected and plug it
 later, the Ethernet port works perfectly and the error does not appear at
 all. My device is a TP-Link TL-WR710N v2.1

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Re: [OpenWrt-Tickets] [OpenWrt] #18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out

[OpenWrt]

#18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out
+
  Reporter:  openwrt@…  |  Owner:  developers
  Type:  defect | Status:  reopened
  Priority:  normal |  Milestone:  Chaos Calmer 15.05
 Component:  kernel |Version:  Trunk
Resolution: |   Keywords:
+
Changes (by nw@…):

 * status:  closed => reopened
 * resolution:  fixed =>


Comment:

 I have build an image from the latest git tree. I am on:
 Linux OpenWrt 4.4.14 #2 Tue Aug 9 06:01:58 UTC 2016 mips GNU/Linux
 and face the same behaviour as described above:

 [   39.057539] [ cut here ]
 [   39.060746] WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:306
 dev_watchdog+0x1dc/0x2
 [   39.069154] NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out
 [   39.075639] Modules linked in: ath9k ath9k_common pppoe ppp_async
 iptable_nat ath9k_hw a
 [   39.148741] CPU: 0 PID: 0 Comm: swapper Not tainted 4.4.14 #2
 [   39.154460] Stack : 803ba184  0001 8041 804010d8
 80400d63 8039b8b4 0
 [   39.154460]80463790 803ff3fc 0200 0010 0100 800a678c
 803a0ef8 8040
 [   39.154460]0003 803ff3fc 8039f304 803fbc2c 0100 800a4758
 0006 
 [   39.154460] 801f2b00    
  
 [   39.154460]     
  
 [   39.154460]...
 [   39.189874] Call Trace:
 [   39.192324] [<8007197c>] show_stack+0x50/0x84
 [   39.196664] [<80081580>] warn_slowpath_common+0xa0/0xd0
 [   39.201880] [<800815dc>] warn_slowpath_fmt+0x2c/0x38
 [   39.206814] [<80280418>] dev_watchdog+0x1dc/0x260
 [   39.211531] [<800af8a0>] call_timer_fn.isra.5+0x24/0x80
 [   39.216710] [<800afb1c>] run_timer_softirq+0x1ac/0x1f4
 [   39.221850] [<800839dc>] __do_softirq+0x164/0x290
 [   39.226538] [<8006a5d0>] plat_irq_dispatch+0xbc/0xf4
 [   39.231470]
 [   39.232933] ---[ end trace 1fc442cc2d86308f ]---

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Re: [OpenWrt-Tickets] [OpenWrt] #18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out

[OpenWrt]

#18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out
+
  Reporter:  openwrt@…  |  Owner:  developers
  Type:  defect | Status:  closed
  Priority:  normal |  Milestone:  Chaos Calmer 15.05
 Component:  kernel |Version:  Trunk
Resolution:  fixed  |   Keywords:
+
Changes (by nbd):

 * status:  reopened => closed
 * resolution:   => fixed


Comment:

 fixed in r47892, r47895

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Re: [OpenWrt-Tickets] [OpenWrt] #18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out

[OpenWrt]

#18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out
+
  Reporter:  openwrt@…  |  Owner:  developers
  Type:  defect | Status:  reopened
  Priority:  normal |  Milestone:  Chaos Calmer 15.05
 Component:  kernel |Version:  Trunk
Resolution: |   Keywords:
+

Comment (by psyke83):

 The original bug was probably different, but the issue experienced by
 uysiquebien should definitely be fixed, yes. There was a flaw in the
 driver: when the tx queue became full, it stopped the transmit queue, but
 neglected to subsequently wake the queue, causing tx timeouts until the
 interface was brought down and back up.

 The fix should affect all SOCs using the ar71xx drivers, so a lot of open
 bug reports mentioning  "tx timeout" or "transmit queue 0 timed out"
 should be solved by this (some of them 4+ years old).

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Re: [OpenWrt-Tickets] [OpenWrt] #18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out

[OpenWrt]

#18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out
+
  Reporter:  openwrt@…  |  Owner:  developers
  Type:  defect | Status:  reopened
  Priority:  normal |  Milestone:  Chaos Calmer 15.05
 Component:  kernel |Version:  Trunk
Resolution: |   Keywords:
+

Comment (by anonymous):

 Could this be the same as #18922?

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Re: [OpenWrt-Tickets] [OpenWrt] #18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out

[OpenWrt]

#18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out
+
  Reporter:  openwrt@…  |  Owner:  developers
  Type:  defect | Status:  reopened
  Priority:  normal |  Milestone:  Chaos Calmer 15.05
 Component:  kernel |Version:  Trunk
Resolution: |   Keywords:
+
Changes (by uysiquebien):

 * status:  closed => reopened
 * resolution:  fixed =>


Comment:

 This happens randomly on my TL-WR741ND which runs r47335. I can either
 reboot or log in from a wireless host and do "ifconfig eth0 down; ifconfig
 eth0 up" to be able to use my ethernet ports again.

 The following lines are repeated forever:

 {{{
 Fri Nov  6 21:51:55 2015 kern.info kernel: [ 5117.37] br-lan: port
 1(eth0) entered forwarding state
 Fri Nov  6 21:51:59 2015 kern.info kernel: [ 5121.02] eth0: tx timeout
 Fri Nov  6 21:51:59 2015 kern.info kernel: [ 5121.02] eth0: link down
 Fri Nov  6 21:51:59 2015 kern.info kernel: [ 5121.02] br-lan: port
 1(eth0) entered disabled state
 Fri Nov  6 21:51:59 2015 daemon.notice netifd: Network device 'eth0' link
 is down
 Fri Nov  6 21:51:59 2015 kern.info kernel: [ 5121.36] eth0: link up
 (1000Mbps/Full duplex)
 Fri Nov  6 21:51:59 2015 kern.info kernel: [ 5121.36] br-lan: port
 1(eth0) entered forwarding state
 Fri Nov  6 21:51:59 2015 kern.info kernel: [ 5121.37] br-lan: port
 1(eth0) entered forwarding state
 Fri Nov  6 21:51:59 2015 daemon.notice netifd: Network device 'eth0' link
 is up
 Fri Nov  6 21:52:01 2015 kern.info kernel: [ 5123.37] br-lan: port
 1(eth0) entered forwarding state
 Fri Nov  6 21:52:05 2015 kern.info kernel: [ 5127.02] eth0: tx timeout
 Fri Nov  6 21:52:05 2015 kern.info kernel: [ 5127.02] eth0: link down
 Fri Nov  6 21:52:05 2015 kern.info kernel: [ 5127.02] br-lan: port
 1(eth0) entered disabled state
 Fri Nov  6 21:52:05 2015 daemon.notice netifd: Network device 'eth0' link
 is down
 Fri Nov  6 21:52:05 2015 kern.info kernel: [ 5127.36] eth0: link up
 (1000Mbps/Full duplex)
 Fri Nov  6 21:52:05 2015 kern.info kernel: [ 5127.36] br-lan: port
 1(eth0) entered forwarding state
 Fri Nov  6 21:52:05 2015 kern.info kernel: [ 5127.37] br-lan: port
 1(eth0) entered forwarding state
 Fri Nov  6 21:52:05 2015 daemon.notice netifd: Network device 'eth0' link
 is up
 Fri Nov  6 21:52:07 2015 kern.info kernel: [ 5129.37] br-lan: port
 1(eth0) entered forwarding state
 Fri Nov  6 21:52:07 2015 kern.info kernel: [ 5129.58] eth0: link down
 Fri Nov  6 21:52:07 2015 kern.info kernel: [ 5129.58] br-lan: port
 1(eth0) entered disabled state
 Fri Nov  6 21:52:07 2015 daemon.notice netifd: Network device 'eth0' link
 is down
 Fri Nov  6 21:52:10 2015 kern.info kernel: [ 5132.50] eth0: link up
 (1000Mbps/Full duplex)
 Fri Nov  6 21:52:10 2015 kern.info kernel: [ 5132.50] br-lan: port
 1(eth0) entered forwarding state
 Fri Nov  6 21:52:10 2015 kern.info kernel: [ 5132.51] br-lan: port
 1(eth0) entered forwarding state
 Fri Nov  6 21:52:10 2015 daemon.notice netifd: Network device 'eth0' link
 is up
 }}}

 And the same warning:

 {{{
 Fri Nov  6 21:51:53 2015 kern.warn kernel: [ 5115.02] [
 cut here ]
 Fri Nov  6 21:51:53 2015 kern.warn kernel: [ 5115.02] WARNING: CPU: 0
 PID: 0 at net/sched/sch_generic.c:311 dev_watchdog+0x1d8/0x25c()
 Fri Nov  6 21:51:53 2015 kern.info kernel: [ 5115.03] NETDEV WATCHDOG:
 eth0 (ag71xx): transmit queue 0 timed out
 Fri Nov  6 21:51:53 2015 kern.warn kernel: [ 5115.03] Modules linked
 in: imq ath9k ath9k_common pppoe ppp_async iptable_nat ath9k_hw ath pptp
 pppox ppp_mppe ppp_generic nf_nat_ipv4 nf_conntrack_ipv4 mac80211
 ipt_REJECT ipt_MASQUERADE ebtable_nat ebtable_filter ebtable_broute
 cfg80211 xt_time xt_tcpudp xt_tcpmss xt_string xt_statistic xt_state
 xt_recent xt_quota xt_pkttype xt_physdev xt_owner xt_nat xt_multiport
 xt_mark xt_mac xt_limit xt_length xt_iprange xt_id xt_hl xt_helper xt_ecn
 xt_dscp xt_conntraFri Nov  6 21:51:53 2015 kern.warn kernel: [
 5115.16] CPU: 0 PID: 0 Comm: swapper Not tainted 3.18.23 #1
 Fri Nov  6 21:51:53 2015 kern.warn kernel: [ 5115.17] Stack : 
    803b4292 0032  8025056c
 Fri Nov  6 21:51:53 2015 kern.warn kernel: [ 5115.17] 0001
 00de 80308100 8035e6e3  803b34d0 8035ea18 00de
 Fri Nov  6 21:51:53 2015 kern.warn kernel: [ 5115.17] 803b3918
 0001 0004 800a35cc 0003 800803bc 0137 00de
 Fri Nov  6 21:51:53 2015 kern.warn kernel: [ 5115.17] 8030b6f8
 80359c6c      
 Fri Nov  6 21:51:53 2015 kern.warn kernel: [ 5115.17] 
       
 Fri Nov  6 21:51:53 2015 kern.warn kernel: [ 5115.17] ...
 Fri 

Re: [OpenWrt-Tickets] [OpenWrt] #18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out

[OpenWrt]

#18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out
+--
  Reporter:  openwrt@…  |  Owner:  developers
  Type:  defect | Status:  new
  Priority:  normal |  Milestone:  Chaos Calmer (trunk)
 Component:  kernel |Version:  Trunk
Resolution: |   Keywords:
+--

Comment (by openwrt@…):

 Hi ndb,

 r43776 works great :)

 Thank you very much!

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Re: [OpenWrt-Tickets] [OpenWrt] #18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out

[OpenWrt]

#18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out
+--
  Reporter:  openwrt@…  |  Owner:  developers
  Type:  defect | Status:  closed
  Priority:  normal |  Milestone:  Chaos Calmer (trunk)
 Component:  kernel |Version:  Trunk
Resolution:  fixed  |   Keywords:
+--
Changes (by nbd):

 * status:  new = closed
 * resolution:   = fixed


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Re: [OpenWrt-Tickets] [OpenWrt] #18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out

[OpenWrt]

#18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out
+--
  Reporter:  openwrt@…  |  Owner:  developers
  Type:  defect | Status:  new
  Priority:  normal |  Milestone:  Chaos Calmer (trunk)
 Component:  kernel |Version:  Trunk
Resolution: |   Keywords:
+--

Comment (by nbd):

 please try r43776

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Re: [OpenWrt-Tickets] [OpenWrt] #18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out

[OpenWrt]

#18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out
+--
  Reporter:  openwrt@…  |  Owner:  developers
  Type:  defect | Status:  new
  Priority:  normal |  Milestone:  Chaos Calmer (trunk)
 Component:  kernel |Version:  Trunk
Resolution: |   Keywords:
+--

Comment (by anonymous):

 The Ubiquiti NanoBeam M5 300 (NBE-M5-300) is also affected.

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Re: [OpenWrt-Tickets] [OpenWrt] #18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out

[OpenWrt]

#18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out
+--
  Reporter:  openwrt@…  |  Owner:  developers
  Type:  defect | Status:  new
  Priority:  normal |  Milestone:  Chaos Calmer (trunk)
 Component:  kernel |Version:  Trunk
Resolution: |   Keywords:
+--

Comment (by openwrt@…):

 Hi ndb,

 I've just tried with r43757. The behaviour is the same (no link on
 Ethernet port) but now I don't see the NETDEV message in the kernel boot
 log (see attached file).

 Thank you very much,

 Roger

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Re: [OpenWrt-Tickets] [OpenWrt] #18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out

[OpenWrt]

#18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out
+--
  Reporter:  openwrt@…  |  Owner:  developers
  Type:  defect | Status:  new
  Priority:  normal |  Milestone:  Chaos Calmer (trunk)
 Component:  kernel |Version:  Trunk
Resolution: |   Keywords:
+--

Comment (by nbd):

 please try r43757 - make sure you clean your kernel tree after updating.

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Re: [OpenWrt-Tickets] [OpenWrt] #18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out

[OpenWrt]

#18616: NETDEV WATCHDOG: eth0 (ag71xx): transmit queue 0 timed out
+--
  Reporter:  openwrt@…  |  Owner:  developers
  Type:  defect | Status:  new
  Priority:  normal |  Milestone:  Chaos Calmer (trunk)
 Component:  kernel |Version:  Trunk
Resolution: |   Keywords:
+--

Comment (by nbd):

 please post a full kernel boot log

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