[FS#2628] Kernel warning: eth0 (mtk_soc_eth): transmit queue 0 timed out

Tue Sep 15 02:34:47 EDT 2020

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The following task has a new comment added:

FS#2628 - Kernel warning: eth0 (mtk_soc_eth): transmit queue 0 timed out
User who did this - Maxim (Linaro1985)

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Same issue on TP-Link Archer C20 V4 since OpenWrt 19.07.4

system type             : MediaTek MT7628AN ver:1 eco:2
DISTRIB_ID='OpenWrt'
DISTRIB_RELEASE='19.07.4'
DISTRIB_REVISION='r11208-ce6496d796'
DISTRIB_TARGET='ramips/mt76x8'
DISTRIB_ARCH='mipsel_24kc'
DISTRIB_DESCRIPTION='OpenWrt 19.07.4 r11208-ce6496d796'
DISTRIB_TAINTS=''

Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.053373] ------------[ cut here ]------------
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.062545] WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:320 0x802c56b0
Tue Sep 15 08:11:57 2020 kern.info kernel: [ 3059.076526] NETDEV WATCHDOG: eth0 (mtk_soc_eth): transmit queue 0 timed out
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.090320] Modules linked in: pppoe ppp_async l2tp_ppp pptp pppox ppp_mppe ppp_generic nf_nat_pptp nf_conntrack_pptp nf_conntrack_ipv6 mt7603e mt76 mac80211 lzo lz4 iptable_nat ipt_REJECT ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_tcpmss xt_statistic xt_state xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_ecn xt_dscp xt_conntrack xt_comment xt_TCPMSS xt_REDIRECT xt_LOG xt_HL xt_FLOWOFFLOAD xt_DSCP xt_CT xt_CLASSIFY ts_fsm ts_bm slhc nf_reject_ipv4 nf_nat_tftp nf_nat_snmp_basic nf_nat_sip nf_nat_redirect nf_nat_proto_gre nf_nat_masquerade_ipv4 nf_nat_irc nf_conntrack_ipv4 nf_nat_ipv4 nf_nat_h323 nf_nat_amanda nf_nat nf_log_ipv4 nf_flow_table_hw nf_flow_table nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_tftp nf_conntrack_snmp nf_conntrack_sip nf_conntrack_rtcache nf_conntrack_proto_gre
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.230994]  nf_conntrack_irc nf_conntrack_h323 nf_conntrack_broadcast ts_kmp nf_conntrack_amanda nf_conntrack lzo_decompress lzo_compress lz4_decompress lz4_compress iptable_raw iptable_mangle iptable_filter ipt_ECN ip_tables crc_ccitt compat nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 ip_gre gre l2tp_ip6 l2tp_ip l2tp_eth l2tp_netlink l2tp_core udp_tunnel ip6_udp_tunnel ip_tunnel zram zsmalloc sha1_generic ecb crypto_acompress leds_gpio ehci_platform ehci_hcd gpio_button_hotplug usbcore nls_base usb_common aead cryptomgr crypto_null crypto_hash
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.337383] CPU: 0 PID: 0 Comm: swapper Not tainted 4.14.195 #0
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.349111] Stack : 8046fee0 80054358 80480000 8042ed7c 00000000 00000000 00000000 00000000
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.365687]         00000000 00000000 00000000 00000000 00000000 00000001 83807de0 53261622
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.382255]         83807e78 00000000 00000000 00003a88 00000038 803cea38 00000007 00000000
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.398826]         00000000 80460000 000525e7 00000000 83807dc0 00000000 00000000 80428c30
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.415397]         802c56b0 00000140 8046ff34 8046fef4 00000002 8021cfc0 00000000 805b0000
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.431981]         ...
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.436835] Call Trace:
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.436848] [] 0x80054358
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.448642] [] 0x803cea38
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.455580] [] 0x802c56b0
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.462486] [] 0x8021cfc0
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.469429] [] 0x8000aa50
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.476350] [] 0x8000aa58
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.483275] [] 0x80026480
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.490210] [] 0x802c56b0
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.497156] [] 0x80026508
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.504092] [] 0x8026de70
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.511020] [] 0x802c56b0
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.517957] [] 0x802c554c
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.524876] [] 0x8005ffcc
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.531773] [] 0x8000e0a4
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.538715] [] 0x800601a0
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.545649] [] 0x8029f198
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.552562] [] 0x803d44e8
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.559481] [] 0x8005a554
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.566419] [] 0x80055ab0
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.573345] [] 0x80005e90
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.580239]
Tue Sep 15 08:11:57 2020 kern.warn kernel: [ 3059.583176] ---[ end trace 7c22dc092efa42ba ]---
Tue Sep 15 08:11:57 2020 kern.err kernel: [ 3059.592336] mtk_soc_eth 10100000.ethernet eth0: transmit timed out
Tue Sep 15 08:11:57 2020 kern.info kernel: [ 3059.604601] mtk_soc_eth 10100000.ethernet eth0: dma_cfg:00000055
Tue Sep 15 08:11:57 2020 kern.info kernel: [ 3059.616525] mtk_soc_eth 10100000.ethernet eth0: tx_ring=0, base=02cc8000, max=1024, ctx=507, dtx=507, fdx=455, next=507
Tue Sep 15 08:11:57 2020 kern.info kernel: [ 3059.637903] mtk_soc_eth 10100000.ethernet eth0: rx_ring=0, base=02ccc000, max=1024, calc=363, drx=369

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More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=2628#comment8794

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