#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: [ 5117.370000] br-lan: port
1(eth0) entered forwarding state
Fri Nov 6 21:51:59 2015 kern.info kernel: [ 5121.020000] eth0: tx timeout
Fri Nov 6 21:51:59 2015 kern.info kernel: [ 5121.020000] eth0: link down
Fri Nov 6 21:51:59 2015 kern.info kernel: [ 5121.020000] 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: [ 5121.360000] eth0: link up
(1000Mbps/Full duplex)
Fri Nov 6 21:51:59 2015 kern.info kernel: [ 5121.360000] br-lan: port
1(eth0) entered forwarding state
Fri Nov 6 21:51:59 2015 kern.info kernel: [ 5121.370000] 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: [ 5123.370000] br-lan: port
1(eth0) entered forwarding state
Fri Nov 6 21:52:05 2015 kern.info kernel: [ 5127.020000] eth0: tx timeout
Fri Nov 6 21:52:05 2015 kern.info kernel: [ 5127.020000] eth0: link down
Fri Nov 6 21:52:05 2015 kern.info kernel: [ 5127.020000] 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: [ 5127.360000] eth0: link up
(1000Mbps/Full duplex)
Fri Nov 6 21:52:05 2015 kern.info kernel: [ 5127.360000] br-lan: port
1(eth0) entered forwarding state
Fri Nov 6 21:52:05 2015 kern.info kernel: [ 5127.370000] 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: [ 5129.370000] br-lan: port
1(eth0) entered forwarding state
Fri Nov 6 21:52:07 2015 kern.info kernel: [ 5129.580000] eth0: link down
Fri Nov 6 21:52:07 2015 kern.info kernel: [ 5129.580000] 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: [ 5132.500000] eth0: link up
(1000Mbps/Full duplex)
Fri Nov 6 21:52:10 2015 kern.info kernel: [ 5132.500000] br-lan: port
1(eth0) entered forwarding state
Fri Nov 6 21:52:10 2015 kern.info kernel: [ 5132.510000] 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: [ 5115.020000] ------------[
cut here ]------------
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.020000] 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: [ 5115.030000] NETDEV WATCHDOG:
eth0 (ag71xx): transmit queue 0 timed out
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.030000] 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: [
5115.160000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.18.23 #1
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.170000] Stack : 00000000
00000000 00000000 00000000 803b4292 00000032 00000000 8025056c
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.170000] 00000001
000000de 80308100 8035e6e3 00000000 803b34d0 8035ea18 000000de
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.170000] 803b3918
00000001 00000004 800a35cc 00000003 800803bc 00000137 000000de
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.170000] 8030b6f8
80359c6c 00000000 00000000 00000000 00000000 00000000 00000000
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.170000] 00000000
00000000 00000000 00000000 00000000 00000000 00000000 00000000
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.170000] ...
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.200000] Call Trace:
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.200000] [<80070fe0>]
show_stack+0x50/0x84
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.210000] [<800804c4>]
warn_slowpath_common+0x84/0xb4
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.210000] [<80080520>]
warn_slowpath_fmt+0x2c/0x38
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.220000] [<8025056c>]
dev_watchdog+0x1d8/0x25c
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.220000] [<800ab068>]
call_timer_fn.isra.38+0x24/0x84
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.230000] [<800ab880>]
run_timer_softirq+0x1bc/0x1f8
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.230000] [<800829c4>]
__do_softirq+0xf8/0x230
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.240000] [<80082d30>]
irq_exit+0x54/0x70
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.240000] [<80060830>]
ret_from_irq+0x0/0x4
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.250000] [<80060a80>]
__r4k_wait+0x20/0x40
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.250000] [<8009f564>]
cpu_startup_entry+0xf0/0x13c
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.260000] [<80377b5c>]
start_kernel+0x42c/0x444
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.260000]
Fri Nov 6 21:51:53 2015 kern.warn kernel: [ 5115.260000] ---[ end trace
3b5eef35d2354a9a ]---
}}}
--
Ticket URL: <https://dev.openwrt.org/ticket/18616#comment:9>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
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