FOR TIPS, gUIDES & TUTORIALS

subscribe to our Youtube

GO TO YOUTUBE

14455 questions

17168 answers

28195 comments

0 members

We are migrating to our new platform at https://community.teltonika.lt. Moving forward, you can continue discussions on this new platform. This current platform will be temporarily maintained for reference purposes.
0 votes
373 views 3 comments
by

After some time my RUT850 router just stalls, no data ist transmitted anymore. The connection ist still active (LTE) according to LEDs and admin page.

An error ist logged in sytem log:

Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.010000] ------------[ cut here ]------------
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.010000] WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:306 dev_watchdog+0x1d8/0x25c()
Tue Jun 30 10:23:41 2020 kern.info kernel: [ 5343.020000] NETDEV WATCHDOG: wwan0 (cdc_ncm): transmit queue 0 timed out
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.030000] Modules linked in: iptable_nat nf_nat_ipv4 ath9k ath9k_common pppoe ppp_async option l2tp_ppp ath9k_hw ath usb_wwan qmi_wwan pptp pppox ppp_mppe ppp_generic nf_conntrack_ipv6 nf_conntrack_ipv4 mac80211 ipt_REJECT ipt_MASQUERADE cfg80211 cdc_ncm xt_time xt_tcpudp xt_tcpmss xt_string xt_statistic xt_state xt_recent xt_quota2 xt_policy xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_id xt_hl xt_helper xt_esp xt_ecn xt_dscp xt_coova xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS xt_REDIRECT xt_LOG xt_HL xt_DSCP xt_CT xt_CLASSIFY usbserial usbnet ts_kmp ts_fsm ts_bm slhc nf_reject_ipv4 nf_nat_masquerade_ipv4 nf_nat_ftp nf_nat nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache nf_conntrack_ftp lib80211_crypt_ccmp lib80211 iptable_raw iptable_mangle iptable_filter ipt_ah ipt_ECN ip_tables crc_ccitt compat cdc_wdm cdc_acm act_connmark nf_conntrack act_skbedit act_mirred em_u32 cls_u32 cls_tcindex cls_flow cls_route cls_fw sch_hfsc sch_ingress ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_common ip6table_raw ip6table_mangle ip6table_filter Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.180000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.18.44 #1
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.180000] Stack : 00000000 00000000 00000000 00000000 803d42b2 00000032 00000000 80252634
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.180000]    00000001 803f58b8 8031a32c 80374aa3 00000000 803d34d8 80374dd8 803f58b8
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.180000]    00000200 00000001 00000004 800a3968 00000003 800807a4 00000132 803f58b8
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.180000]    8031d910 8036fc6c 00000000 00000000 00000000 00000000 00000000 00000000
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.180000]    00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.180000]    ...
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.220000] Call Trace:
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.220000] [<800713d4>] show_stack+0x50/0x84
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.220000] [<800808ac>] warn_slowpath_common+0x84/0xb4
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.230000] [<80080908>] warn_slowpath_fmt+0x2c/0x38
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.240000] [<80252634>] dev_watchdog+0x1d8/0x25c
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.240000] [<800ab41c>] call_timer_fn.isra.38+0x24/0x84
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.250000] [<800abc5c>] run_timer_softirq+0x1c0/0x200
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.250000] [<80082db4>] __do_softirq+0xf8/0x230
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.260000] [<80083118>] irq_exit+0x54/0x70
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.260000] [<80060830>] ret_from_irq+0x0/0x4
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.260000] [<8006e268>] r4k_wait_irqoff+0x18/0x20
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.270000] [<8009f904>] cpu_startup_entry+0xec/0x138
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.270000] [<80393b58>] start_kernel+0x428/0x440
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.280000]
Tue Jun 30 10:23:41 2020 kern.warn kernel: [ 5343.280000] ---[ end trace b4589365e754b658 ]---

Current Firmware Information:

Firmware version RUT850_R_00.01.04

Firmware build date 2020-05-15, 05:50:22

Kernel version 3.18.44

Bootloader version 2.0.1

STM8 firmware version 10

by anonymous

I have the same issue on a RUT240. Connection to router via Wireguard VPN keeps working. The devices connected on the LAN cannot be reached anymore in any way. The problem occurs roughly once a week, seemingly random.

Executing /etc/init.d/network reload<!--[if gte mso 10]> /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Arial",sans-serif; mso-ansi-language:EN; mso-fareast-language:#0C00;} <![endif]-->  fixes the issue, network works normal again. 

Help would be appreciated.

Kernel trace:

[13702.010000] WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:306 dev_watchdog+0x1d8/0x25c()
[13702.020000] NETDEV WATCHDOG: wwan0 (qmi_wwan): transmit queue 0 timed out
[13702.020000] Modules linked in: iptable_nat ip6table_nat nf_nat_ipv6 nf_nat_ipv4 ath9k ath9k_common pppoe ppp_async option l2tp_ppp ath9k_hw ath usb_wwan qmi_wwan pptp pppox ppp_mppe ppp_generic nf_nat_pptp nf_conntrack_pptp nf_conntrack_ipv6 nf_conntrack_ipv4 mac80211 ipt_REJECT ipt_MASQUERADE ftdi_sio ebtable_nat ebtable_filter ebtable_broute cfg80211 cdc_ncm cdc_ether xt_time xt_tcpudp xt_tcpmss xt_string xt_statistic xt_state xt_recent xt_quota2 xt_policy xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_id xt_hl xt_helper xt_esp xt_ecn xt_dscp xt_coova xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS xt_REDIRECT xt_NETMAP xt_LOG xt_HL xt_DSCP xt_CT xt_CLASSIFY wireguard usbserial usbnet ts_kmp ts_fsm ts_bm slhc nf_reject_ipv4 nf_nat_proto_gre nf_nat_masquerade_ipv4 nf_nat_ftp nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache nf_conntrack_proto_gre nf_conntrack_ftp iptable_raw iptable_mangle iptable_filter ipt_ah ipt_ECN ip_tables ebtables ebt_vlan ebt_stp ebt_snat ebt_redirect ebt_pkttype ebt_nflog ebt_mark_m ebt_mark ebt_log ebt_limit ebt_ip6 ebt_ip ebt_dnat ebt_arpreply ebt_arp ebt_among ebt_802_3 crc7 crc_itu_t crc_ccitt compat cdc_wdm cdc_acm fuse act_connmark act_skbedit act_mirred em_u32 cls_u32 cls_tcindex cls_flow cls_route cls_fw sch_hfsc sch_ingress ledtrig_usbdev sr_mod cdrom ip6t_NPT ip6t_MASQUERADE nf_nat_masquerade_ipv6 nf_nat nf_conntrack ip6t_rt ip6t_frag ip6t_hbh ip6t_eui64 ip6t_mh ip6t_ah ip6t_ipv6header ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_common ip6table_raw ip6table_mangle ip6table_filter ip6_tables x_tables msdos ip6_gre ip_gre gre ifb sit l2tp_netlink l2tp_core udp_tunnel ip6_udp_tunnel ipcomp6 xfrm6_tunnel xfrm6_mode_tunnel xfrm6_mode_transport xfrm6_mode_beet esp6 ah6 ipcomp xfrm4_tunnel xfrm4_mode_tunnel xfrm4_mode_transport xfrm4_mode_beet esp4 ah4 ip6_tunnel tunnel6 tunnel4 ip_tunnel tun af_key xfrm_user xfrm_ipcomp xfrm_algo vfat fat ntfs autofs4 nls_utf8 nls_iso8859_2 nls_iso8859_15 nls_iso8859_1 nls_cp852 nls_cp850 nls_cp437 ipv6 chainiv eseqiv crypto_wq sha512_generic sha256_generic sha1_generic krng rng md5 hmac ecb des_generic deflate zlib_inflate zlib_deflate cbc authenc arc4 crypto_blkcipher mmc_block usb_storage mmc_core ehci_platform ehci_hcd sd_mod scsi_mod gpio_button_hotplug usbcore nls_base usb_common crc16 mii aead crypto_hash
[13702.230000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.18.44 #1
[13702.240000] Stack : 00000000 00000000 00000000 00000000 803e42b2 00000032 00000000 80258d80
[13702.240000]       00000001 804058b8 803237bc 8037cba3 00000000 803e34e0 8037ced8 804058b8
[13702.240000]       00000200 00000001 00000004 800a3b1c 00000003 800807bc 00000132 804058b8
[13702.240000]       80326e3c 80377c6c 00000000 00000000 00000000 00000000 00000000 00000000
[13702.240000]       00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[13702.240000]       ...
[13702.270000] Call Trace:
[13702.270000] [<800713c8>] show_stack+0x50/0x84
[13702.280000] [<800808c4>] warn_slowpath_common+0x84/0xb4
[13702.280000] [<80080920>] warn_slowpath_fmt+0x2c/0x38
[13702.290000] [<80258d80>] dev_watchdog+0x1d8/0x25c
[13702.290000] [<800ab5e4>] call_timer_fn.isra.38+0x24/0x84
[13702.300000] [<800abe28>] run_timer_softirq+0x1c4/0x204
[13702.300000] [<80082ddc>] __do_softirq+0xf8/0x230
[13702.310000] [<80083148>] irq_exit+0x54/0x70
[13702.310000] [<80060830>] ret_from_irq+0x0/0x4
[13702.320000] [<80060a80>] __r4k_wait+0x20/0x40
[13702.320000] [<8009fab0>] cpu_startup_entry+0xf0/0x13c
[13702.320000] [<8039cb5c>] start_kernel+0x42c/0x444
[13702.330000]
[13702.330000] ---[ end trace 3bd1caedabcaed56 ]---

System information:

System
Router name RUT240
Host name Teltonika-RUT240.com
Router model Teltonika RUT240 LTE
Firmware version RUT2XX_R_00.01.14.4
Kernel version 3.18.44
Bootloader version 3.2.2
Local device time 2021-11-23, 12:56:51
Uptime 22d 1h 32m 1s(since 2021-11-01, 11:24:50)
Load average 1 min: 68%; 5 mins: 23%; 15 mins: 16%
Temperature 36° C
Used
28968 kB / 61024 kB (47%)
Cached
19244 kB / 61024 kB (31%)
Buffered
7780 kB / 61024 kB (12%)
Memory

1 Answer

0 votes
by anonymous
Hi,

could you private message me troubleshoot file?

Thank you.

EB.
by anonymous
Hi EB,

thanks for your reply. Sorry for the delay, but I didn't receive any email about your message.

The next time the error occurs (hopefully (?) today) I will send you the troubleshoot file via private message...

Ralf
by anonymous
Thank you. Looking forward into solving this issue for you.

EB.