Regular kernel faults, maybe due to dnsmasq

Installing and Using OpenWrt
1

Hi
I run v19.07.6 with dnsmasq 2.80-16.3 (due to CVE) but have faced this issue since v19.07.1. Regularly, when I connect any of two recent laptops by wifi or ethernet, I loose connection to my Xiaomi R3G v1 and have to reboot it.

I now use an external syslog server, and as you can see, there is a first kernel fault at 8:14:57. The router continues to work but in a degraded way (part of logs are incorrectly timestamped), then a second and definitive kernel fault happens at 8:16:58, after which nothing gets logged beyond 8:17:09.

Any idea of what it could be, and how to investigate it?

Click to see syslog 

08:14:29 wrt dnsmasq-dhcp[17353]: DHCPDISCOVER(br-lan) 10.4.0.128 00:0e:c6:88:06:64
08:14:29 wrt dnsmasq-dhcp[17353]: DHCPOFFER(br-lan) 10.4.0.128 00:0e:c6:88:06:64
08:14:29 wrt dnsmasq-dhcp[17353]: DHCPREQUEST(br-lan) 10.4.0.128 00:0e:c6:88:06:64
08:14:29 wrt dnsmasq-dhcp[17353]: DHCPACK(br-lan) 10.4.0.128 00:0e:c6:88:06:64 RedBook
08:14:57 wrt kernel: [144102.238084] CPU 3 Unable to handle kernel paging request at virtual address 101c4044, epc == 8006bfac, ra == 8006bf20
08:14:57 wrt kernel: [144102.248859] Oops[#1]:
08:14:57 wrt kernel: [144102.251231] CPU: 3 PID: 21773 Comm: kworker/3:0 Not tainted 4.14.215 #0
08:14:57 wrt kernel: [144102.257949] Workqueue: events_power_efficient 0x8f0dccac [nf_flow_table@8f0dc000+0x3370]
08:14:57 wrt kernel: [144102.266104] task: 8d7ce600 task.stack: 8d4ae000
08:14:57 wrt kernel: [144102.270716] $ 0   : 00000000 00000001 00000024 8fc18d00
08:14:57 wrt kernel: [144102.276034] $ 4   : 00000006 00100000 00db78eb 00db78eb
08:14:57 wrt kernel: [144102.281353] $ 8   : 0000ffff ffff0000 00000002 fffffffe
08:14:57 wrt kernel: [144102.286671] $12   : 80553530 00000040 ffffffff 06640000
08:14:57 wrt kernel: [144102.291994] $16   : 8f18267c 81241320 8054c1e8 00100000
08:14:57 wrt kernel: [144102.297312] $20   : 101c4044 8f18261c 80550000 8056dba0
08:14:57 wrt kernel: [144102.302623] $24   : 00000000 00000000
08:14:57 wrt kernel: [144102.307957] $28   : 8d4ae000 8d4afdc8 8f0e0000 8006bf20
08:14:57 wrt kernel: [144102.313279] Hi    : 00000133
08:14:57 wrt kernel: [144102.316229] Lo    : 33333380
08:14:57 wrt kernel: [144102.319197] epc   : 8006bfac 0x8006bfac
08:14:57 wrt kernel: [144102.323109] ra    : 8006bf20 0x8006bf20
08:14:57 wrt kernel: [144102.327010] Status: 11007c03#011KERNEL EXL IE
08:14:57 wrt kernel: [144102.331298] Cause : c080000c (ExcCode 03)
08:14:57 wrt kernel: [144102.335384] BadVA : 101c4044
08:14:57 wrt kernel: [144102.338348] PrId  : 0001992f (MIPS 1004Kc)
08:14:57 wrt kernel: [144102.342516] Modules linked in: pppoe ppp_async pppox ppp_generic nf_conntrack_ipv6 mt76x2e mt76x2_common mt76x02_lib mt7603e mt76 mac80211 iptable_nat ipt_REJECT ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark xt_mac xt_limit xt_conntrack xt_comment xt_TCPMSS xt_REDIRECT xt_LOG xt_FLOWOFFLOAD xt_CT wireguard slhc nf_reject_ipv4 nf_nat_redirect nf_nat_masquerade_ipv4 nf_conntrack_ipv4 nf_nat_ipv4 nf_nat nf_log_ipv4 nf_flow_table_hw nf_flow_table nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache nf_conntrack iptable_mangle iptable_filter ip_tables crc_ccitt compat ledtrig_usbport nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 ip6_udp_tunnel udp_tunnel vfat fat nls_utf8 nls_iso8859_1 nls_cp437 usb_storage sd_mod
08:14:57 wrt kernel: [144102.413190]  scsi_mod leds_gpio xhci_plat_hcd xhci_pci xhci_mtk xhci_hcd gpio_button_hotplug usbcore nls_base usb_common
08:14:57 wrt kernel: [144102.424181] Process kworker/3:0 (pid: 21773, threadinfo=8d4ae000, task=8d7ce600, tls=00000000)
08:14:57 wrt kernel: [144102.432861] Stack : 00020081 00000000 8fecdb80 00000007 8f182100 00000007 8d482000 8f373700
08:14:57 wrt kernel: [144102.441329]         8f18267c 0000005f 8e9e9b78 8f0dc994 805aada0 8054c1e8 81240da0 00000000
08:14:57 wrt kernel: [144102.449784]         81240da0 80550000 8e9e9b80 8f373700 000000bd 00000100 00000200 8d482000
08:14:57 wrt kernel: [144102.458247]         0000005f 00000001 8e9e9be0 8eb45580 81240a20 81243c00 00000000 00000000
08:14:57 wrt kernel: [144102.466689]         000000c0 fffffffe 80550000 8f0dccc4 81240a20 81243800 00000000 8f0df360
08:14:57 wrt kernel: [144102.475137]         ...
08:14:57 wrt kernel: [144102.477704] Call Trace:
08:14:57 wrt kernel: [144102.477790] [<8f0dc994>] 0x8f0dc994 [nf_flow_table@8f0dc000+0x3370]
08:14:57 wrt kernel: [144102.486696] [<8f0dccc4>] 0x8f0dccc4 [nf_flow_table@8f0dc000+0x3370]
08:14:57 wrt kernel: [144102.493064] [<80046014>] 0x80046014
08:14:57 wrt kernel: [144102.496652] [<8004650c>] 0x8004650c
08:14:57 wrt kernel: [144102.500229] [<80067ad0>] 0x80067ad0
08:14:57 wrt kernel: [144102.503806] [<800461bc>] 0x800461bc
08:14:57 wrt kernel: [144102.507364] [<8004c108>] 0x8004c108
08:14:57 wrt kernel: [144102.510946] [<8004bfd8>] 0x8004bfd8
08:14:57 wrt kernel: [144102.514512] [<8004bfd8>] 0x8004bfd8
08:14:57 wrt kernel: [144102.518071] [<8004bfd8>] 0x8004bfd8
08:14:57 wrt kernel: [144102.521627] [<80006f78>] 0x80006f78
08:14:57 wrt kernel: [144102.525188]
01:00:13 wrt logread[1004]: Logread connected to 10.4.0.2:514
01:00:13 wrt ucitrack: Setting up /etc/config/fstab reload trigger for non-procd /etc/init.d/fstab
01:00:13 wrt netifd: wan (1563): udhcpc: started, v1.30.1
01:00:13 wrt ucitrack: Setting up /etc/config/system reload trigger for non-procd /etc/init.d/led
01:00:13 wrt ucitrack: Setting up /etc/config/system reload dependency on /etc/config/luci_statistics
01:00:13 wrt firewall: Reloading firewall due to ifup of lan (br-lan)
01:00:13 wrt ucitrack: Setting up /etc/config/system reload dependency on /etc/config/dhcp
01:00:15 wrt logread[1004]: Logread connected to 10.4.0.2:514
01:00:15 wrt dropbear[1933]: Failed listening on '22': Error listening: Address not available
01:00:15 wrt dropbear[1933]: Not backgrounding
01:00:15 wrt procd: - init complete -
01:00:15 wrt mac80211: Failed command: iw phy phy0 set antenna 0xffffffff 0xffffffff
01:00:16 wrt firewall: Reloading firewall due to ifup of vpn (vpn)
01:00:16 wrt hostapd: Configuration file: /var/run/hostapd-phy1.conf
01:00:16 wrt hostapd: Configuration file: /var/run/hostapd-phy0.conf
01:00:16 wrt kernel: [   27.208842] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready
01:00:16 wrt kernel: [   27.226738] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
01:00:16 wrt kernel: [   27.240994] br-lan: port 2(wlan0) entered blocking state
01:00:16 wrt kernel: [   27.246564] br-lan: port 2(wlan0) entered disabled state
01:00:16 wrt kernel: [   27.253598] device wlan0 entered promiscuous mode
01:00:16 wrt kernel: [   27.258750] br-lan: port 2(wlan0) entered blocking state
01:00:16 wrt kernel: [   27.264172] br-lan: port 2(wlan0) entered forwarding state
01:00:16 wrt kernel: [   27.271491] br-lan: port 3(wlan1) entered blocking state
01:00:16 wrt kernel: [   27.276963] br-lan: port 3(wlan1) entered disabled state
01:00:16 wrt kernel: [   27.283180] device wlan1 entered promiscuous mode
01:00:16 wrt hostapd: wlan0: interface state UNINITIALIZED->COUNTRY_UPDATE
01:00:17 wrt hostapd: Using interface wlan0 with hwaddr 34:ce:00:64:e5:45 and ssid "wifi2"
01:00:17 wrt hostapd: wlan1: interface state UNINITIALIZED->COUNTRY_UPDATE
01:00:17 wrt hostapd: wlan1: interface state COUNTRY_UPDATE->HT_SCAN
01:00:17 wrt kernel: [   27.479888] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
01:00:17 wrt kernel: [   27.509279] IPv6: ADDRCONF(NETDEV_UP): wlan0-1: link is not ready
01:00:17 wrt hostapd: Using interface wlan0-1 with hwaddr 36:ce:00:64:e5:45 and ssid "guest_nomap"
08:15:40 wrt kernel: [   28.003188] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0-1: link becomes ready
08:15:40 wrt hostapd: Using interface wlan1 with hwaddr 34:ce:00:64:e5:46 and ssid "wifi1"
08:15:40 wrt kernel: [   28.036674] IPv6: ADDRCONF(NETDEV_UP): wlan0-2: link is not ready
08:15:40 wrt hostapd: Using interface wlan0-2 with hwaddr 32:ce:00:64:e5:45 and ssid "wifirestri"
08:15:40 wrt kernel: [   28.200894] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0-2: link becomes ready
08:15:40 wrt hostapd: wlan0: interface state COUNTRY_UPDATE->ENABLED
08:15:40 wrt hostapd: wlan0: AP-ENABLED
08:15:41 wrt firewall: Reloading firewall due to ifup of wan (eth0.2)
08:15:41 wrt kernel: [   28.623531] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
08:15:41 wrt kernel: [   28.630315] br-lan: port 3(wlan1) entered blocking state
08:15:41 wrt kernel: [   28.635761] br-lan: port 3(wlan1) entered forwarding state
08:15:41 wrt hostapd: wlan1: interface state HT_SCAN->ENABLED
08:15:41 wrt hostapd: wlan1: AP-ENABLED
08:15:41 wrt netifd: Network device 'wlan0' link is up
08:15:41 wrt netifd: Network device 'wlan0-1' link is up
08:15:41 wrt netifd: Interface 'guest' is enabled
08:15:41 wrt netifd: Interface 'guest' is setting up now
08:15:41 wrt netifd: Interface 'guest' is now up
08:15:41 wrt netifd: Interface 'guest' has link connectivity
08:15:41 wrt netifd: Network device 'wlan0-2' link is up
08:15:41 wrt netifd: Interface 'restri' is enabled
08:15:41 wrt netifd: Interface 'restri' is setting up now
08:15:41 wrt netifd: Interface 'restri' is now up
08:15:41 wrt netifd: Interface 'restri' has link connectivity
08:15:41 wrt hostapd: wlan0-2: STA 3c:84:6a:6b:3d:c2 IEEE 802.11: authenticated
08:15:41 wrt hostapd: wlan0-2: STA 3c:84:6a:6b:3d:c2 IEEE 802.11: associated (aid 1)
08:15:41 wrt netifd: Network device 'wlan1' link is up
08:15:42 wrt hostapd: wlan0-2: AP-STA-CONNECTED 3c:84:6a:6b:3d:c2
08:15:42 wrt hostapd: wlan0-2: STA 3c:84:6a:6b:3d:c2 RADIUS: starting accounting session 11B2A594B59F7C84
08:15:42 wrt hostapd: wlan0-2: STA 3c:84:6a:6b:3d:c2 WPA: pairwise key handshake completed (RSN)
08:15:42 wrt hostapd: wlan0-2: STA 1c:3b:f3:8d:23:56 IEEE 802.11: authenticated
08:15:42 wrt hostapd: wlan0-2: STA 1c:3b:f3:8d:23:56 IEEE 802.11: associated (aid 2)
08:15:42 wrt hostapd: wlan0-2: AP-STA-CONNECTED 1c:3b:f3:8d:23:56
08:15:42 wrt hostapd: wlan0-2: STA 1c:3b:f3:8d:23:56 RADIUS: starting accounting session 0A4E0893679D922C
08:15:42 wrt hostapd: wlan0-2: STA 1c:3b:f3:8d:23:56 WPA: pairwise key handshake completed (RSN)
08:15:42 wrt firewall: Reloading firewall due to ifup of guest (wlan0-1)
08:15:43 wrt hostapd: wlan0-2: STA 50:ec:50:13:b6:fe IEEE 802.11: authenticated
08:15:43 wrt hostapd: wlan0-2: STA 50:ec:50:13:b6:fe IEEE 802.11: associated (aid 3)
08:15:43 wrt hostapd: wlan0-2: AP-STA-CONNECTED 50:ec:50:13:b6:fe
08:15:43 wrt hostapd: wlan0-2: STA 50:ec:50:13:b6:fe RADIUS: starting accounting session A25A48A100E66742
08:15:43 wrt hostapd: wlan0-2: STA 50:ec:50:13:b6:fe WPA: pairwise key handshake completed (RSN)
08:15:43 wrt ddns-scripts[2579]: myddns_ipv4_homelio: PID '2579' started at 2021-02-08 08:15
08:15:43 wrt ddns-scripts[2580]: myddns_ipv4_site1: PID '2580' started at 2021-02-08 08:15
08:15:44 wrt firewall: Reloading firewall due to ifup of restri (wlan0-2)
08:15:46 wrt dnsmasq[1109]: exiting on receipt of SIGTERM
08:15:46 wrt dnsmasq[3315]: started, version 2.80 cachesize 150
08:15:46 wrt dnsmasq[3315]: compile time options: IPv6 GNU-getopt no-DBus no-i18n no-IDN DHCP no-DHCPv6 no-Lua TFTP no-conntrack no-ipset no-auth no-nettlehash no-DNSSEC no-ID loop-detect inotify dumpfile
08:15:46 wrt dnsmasq-dhcp[3315]: DHCP, IP range 10.4.0.100 -- 10.4.0.249, lease time 12h
08:15:46 wrt dnsmasq[3315]: using local addresses only for domain test
08:15:46 wrt dnsmasq[3315]: using local addresses only for domain onion
08:15:46 wrt dnsmasq[3315]: using local addresses only for domain localhost
08:15:46 wrt dnsmasq[3315]: using local addresses only for domain local
08:15:46 wrt dnsmasq[3315]: using local addresses only for domain invalid
08:15:46 wrt dnsmasq[3315]: using local addresses only for domain bind
08:15:46 wrt dnsmasq[3315]: using nameserver 1.1.1.0#53
08:15:46 wrt dnsmasq[3315]: using nameserver 1.1.1.1#53
08:15:46 wrt dnsmasq[3315]: using local addresses only for domain mydomain
08:15:46 wrt dnsmasq[3315]: reading /tmp/resolv.conf.auto
08:15:46 wrt dnsmasq[3315]: using local addresses only for domain test
08:15:46 wrt dnsmasq[3315]: using local addresses only for domain onion
08:15:46 wrt dnsmasq[3315]: using local addresses only for domain localhost
08:15:46 wrt dnsmasq[3315]: using local addresses only for domain local
08:15:46 wrt dnsmasq[3315]: using local addresses only for domain invalid
08:15:46 wrt dnsmasq[3315]: using local addresses only for domain bind
08:15:46 wrt dnsmasq[3315]: using nameserver 1.1.1.0#53
08:15:46 wrt dnsmasq[3315]: using nameserver 1.1.1.1#53
08:15:46 wrt dnsmasq[3315]: using local addresses only for domain mydomain
08:15:46 wrt dnsmasq[3315]: using nameserver 192.168.1.1#53
08:15:46 wrt dnsmasq[3315]: read /etc/hosts - 4 addresses
08:15:46 wrt dnsmasq[3315]: read /tmp/hosts/dhcp.cfg01411c - 23 addresses
08:15:46 wrt dnsmasq[3315]: read /etc/hosts - 4 addresses
08:15:46 wrt dnsmasq[3315]: read /tmp/hosts/dhcp.cfg01411c - 23 addresses
08:15:46 wrt hostapd: wlan0: STA 08:c5:e1:aa:d5:14 IEEE 802.11: authenticated
08:15:46 wrt dnsmasq-dhcp[3315]: no address range available for DHCP request via wlan0-2
08:15:46 wrt hostapd: wlan0: STA 08:c5:e1:aa:d5:14 IEEE 802.11: associated (aid 1)
08:15:46 wrt hostapd: wlan0: AP-STA-CONNECTED 08:c5:e1:aa:d5:14
08:15:46 wrt hostapd: wlan0: STA 08:c5:e1:aa:d5:14 RADIUS: starting accounting session C5AA98A7246C394E
08:15:46 wrt hostapd: wlan0: STA 08:c5:e1:aa:d5:14 WPA: pairwise key handshake completed (RSN)
08:15:46 wrt dnsmasq-dhcp[3315]: no address range available for DHCP request via wlan0-2
08:15:46 wrt dnsmasq-dhcp[3315]: DHCPREQUEST(br-lan) 10.4.0.139 08:c5:e1:aa:d5:14
08:15:46 wrt dnsmasq-dhcp[3315]: DHCPACK(br-lan) 10.4.0.139 08:c5:e1:aa:d5:14 S7lio
08:15:48 wrt dnsmasq-dhcp[3315]: no address range available for DHCP request via wlan0-2
08:15:48 wrt dnsmasq-dhcp[3315]: no address range available for DHCP request via wlan0-2
08:15:50 wrt dnsmasq-dhcp[3315]: no address range available for DHCP request via wlan0-2
08:15:54 wrt dnsmasq-dhcp[3315]: no address range available for DHCP request via wlan0-2
08:15:54 wrt dnsmasq-dhcp[3315]: no address range available for DHCP request via wlan0-2
08:15:56 wrt hostapd: wlan0-1: STA 2c:c5:46:fc:b2:02 IEEE 802.11: authenticated
08:15:56 wrt hostapd: wlan0-1: STA 2c:c5:46:fc:b2:02 IEEE 802.11: associated (aid 1)
08:16:02 wrt adblock-4.0.7[1242]: download of 'malwaredomains' failed, Resolving mirror.cedia.org.ec... failed
08:16:02 wrt adblock-4.0.7[1242]: download of 'reg_fr' failed, failed Resolving easylist-downloads.adblockplus.org... failed
08:16:02 wrt adblock-4.0.7[1242]: download of 'yoyo' failed
08:16:23 wrt crond[1374]: time disparity of 436 minutes detected
08:16:58 wrt kernel: [  102.732018] INFO: rcu_sched self-detected stall on CPU
08:16:58 wrt kernel: [  102.737195] #0112-...: (5999 ticks this GP) idle=822/2/0 softirq=2901/2901 fqs=105
08:16:58 wrt kernel: [  102.744558] #011 (t=6001 jiffies g=709 c=708 q=810)
08:16:58 wrt kernel: [  102.749186] rcu_sched kthread starved for 5786 jiffies! g709 c708 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1
08:16:58 wrt kernel: [  102.752011] INFO: rcu_sched detected stalls on CPUs/tasks:
08:16:58 wrt kernel: [  102.759063] rcu_sched       R
08:16:58 wrt kernel: [  102.759093] #0112-...: (5999 ticks this GP) idle=822/2/0 softirq=2901/2901 fqs=105
08:16:58 wrt kernel: [  102.764539]   running task
08:16:58 wrt kernel: [  102.767493]
08:16:58 wrt kernel: [  102.774859]     0     8      2 0x00100000
08:16:58 wrt kernel: [  102.777896] (detected by 1, t=6004 jiffies, g=709, c=708, q=810)
08:16:58 wrt kernel: [  102.779456] Stack :
08:16:58 wrt kernel: [  102.783457] Sending NMI from CPU 1 to CPUs 2:
08:16:58 wrt kernel: [  102.789423]  00000000 8fc3aca0 8fc57e38 8fc57e38 8fc57e38 80550000 81215380 00000000
08:16:58 wrt kernel: [  102.803580]         00000003 80088714 ffff9c51 81215380 8fc57e38 80550000 81215380 00000000
08:16:58 wrt kernel: [  102.811936]         00000003 8054c1e8 80554610 804a0478 8fc57e38 80550000 80550000 00000000
08:16:58 wrt kernel: [  102.820295]         00000003 804a3c90 80550000 00000000 8fc57ebc 800682b8 81241420 00000001
08:16:58 wrt kernel: [  102.828655]         00000200 00000000 ffff9c51 800887c0 8fc3aca0 04800000 80554500 00000000
08:16:58 wrt kernel: [  102.837015]         ...
08:16:58 wrt kernel: [  102.839465] Call Trace:
08:16:58 wrt kernel: [  102.839549] [<80088714>] 0x80088714
08:16:58 wrt kernel: [  102.845483] [<804a0478>] 0x804a0478
08:16:58 wrt kernel: [  102.848975] [<804a3c90>] 0x804a3c90
08:16:58 wrt kernel: [  102.852473] [<800682b8>] 0x800682b8
08:16:58 wrt kernel: [  102.855959] [<800887c0>] 0x800887c0
08:16:58 wrt kernel: [  102.859453] [<80084ce4>] 0x80084ce4
08:16:58 wrt kernel: [  102.862955] [<80080000>] 0x80080000
08:16:58 wrt kernel: [  102.866439] [<80081d2c>] 0x80081d2c
08:16:58 wrt kernel: [  102.869954] [<80084784>] 0x80084784
08:16:58 wrt kernel: [  102.873440] [<8004c108>] 0x8004c108
08:16:58 wrt kernel: [  102.876923] [<8004bfd8>] 0x8004bfd8
08:16:58 wrt kernel: [  102.880421] [<8004bfd8>] 0x8004bfd8
08:16:58 wrt kernel: [  102.883922] [<8004bfd8>] 0x8004bfd8
08:16:58 wrt kernel: [  102.887405] [<80006f78>] 0x80006f78
08:16:58 wrt kernel: [  102.890901]
08:16:58 wrt kernel: [  105.522058] INFO: rcu_sched detected expedited stalls on CPUs/tasks: { 2-... } 6205 jiffies s: 101 root: 0x4/.
08:16:58 wrt kernel: [  105.532109] blocking rcu_node structures:
08:16:58 wrt kernel: [  105.536109] Task dump for CPU 2:
08:16:58 wrt kernel: [  105.539322] swapper/2       R  running task        0     0      1 0x00100004
08:16:58 wrt kernel: [  105.546419] Stack : bfbf8000 00000000 00000000 80008e34 0000143f 00000000 8fc5e000 8fc5fee8
08:16:58 wrt kernel: [  105.554796]         00000000 8006896c 11007c03 0000000a 66666669 8054c0c8 50800400 80008e50
08:16:58 wrt kernel: [  105.563165]         bfbf8000 00000000 00000000 804a0800 00000085 00000000 00000000 00000001
08:16:58 wrt kernel: [  105.571514]         00000001 80068be8 00000001 00000001 bfbf8000 00000000 00000005 800140b4
08:16:58 wrt kernel: [  105.579881]         00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
08:16:58 wrt kernel: [  105.588248]         ...
08:16:58 wrt kernel: [  105.590690] Call Trace:
08:16:58 wrt kernel: [  105.590709] [<80008e34>] 0x80008e34
08:16:58 wrt kernel: [  105.596770] [<8006896c>] 0x8006896c
08:16:58 wrt kernel: [  105.600248] [<80008e50>] 0x80008e50
08:16:58 wrt kernel: [  105.603751] [<804a0800>] 0x804a0800
08:16:58 wrt kernel: [  105.607227] [<80068be8>] 0x80068be8
08:16:58 wrt kernel: [  105.610767] [<800140b4>] 0x800140b4
08:16:58 wrt kernel: [  105.614280]
08:17:07 wrt kernel: [  115.042037] ------------[ cut here ]------------
08:17:07 wrt kernel: [  115.046699] WARNING: CPU: 3 PID: 0 at net/sched/sch_generic.c:320 0x8038d690
08:17:07 wrt kernel: [  115.053746] NETDEV WATCHDOG: eth0 (mtk_soc_eth): transmit queue 0 timed out
08:17:07 wrt kernel: [  115.060673] Modules linked in: pppoe ppp_async pppox ppp_generic nf_conntrack_ipv6 mt76x2e mt76x2_common mt76x02_lib mt7603e mt76 mac80211 iptable_nat ipt_REJECT ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark xt_mac xt_limit xt_conntrack xt_comment xt_TCPMSS xt_REDIRECT xt_LOG xt_FLOWOFFLOAD xt_CT wireguard slhc nf_reject_ipv4 nf_nat_redirect nf_nat_masquerade_ipv4 nf_conntrack_ipv4 nf_nat_ipv4 nf_nat nf_log_ipv4 nf_flow_table_hw nf_flow_table nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache nf_conntrack iptable_mangle iptable_filter ip_tables crc_ccitt compat ledtrig_usbport nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 ip6_udp_tunnel udp_tunnel vfat fat nls_utf8 nls_iso8859_1 nls_cp437 usb_storage sd_mod
08:17:07 wrt kernel: [  115.131320]  scsi_mod leds_gpio xhci_plat_hcd xhci_pci xhci_mtk xhci_hcd gpio_button_hotplug usbcore nls_base usb_common
08:17:07 wrt kernel: [  115.142231] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 4.14.215 #0
08:17:07 wrt kernel: [  115.148298] Stack : 00000000 00000000 00000000 8ffd6740 00000000 00000000 00000000 00000000
08:17:07 wrt kernel: [  115.156646]         00000000 00000000 00000000 00000000 00000000 00000001 8fc0fd60 1cc28237
08:17:07 wrt kernel: [  115.164993]         8fc0fdf8 00000000 00000000 00006fe0 00000038 8049e0f8 00000007 00000000
08:17:07 wrt kernel: [  115.173341]         00000000 80550000 00022b97 00000000 8fc0fd40 00000000 00000000 8050d534
08:17:07 wrt kernel: [  115.181689]         8038d690 00000140 00000003 8ffd6740 00000000 802ae4f0 0000000c 806b000c
08:17:07 wrt kernel: [  115.190037]         ...
08:17:07 wrt kernel: [  115.192477] Call Trace:
08:17:07 wrt kernel: [  115.192533] [<8049e0f8>] 0x8049e0f8
08:17:07 wrt kernel: [  115.198442] [<8038d690>] 0x8038d690
08:17:07 wrt kernel: [  115.201917] [<802ae4f0>] 0x802ae4f0
08:17:07 wrt kernel: [  115.205402] [<8000c1a0>] 0x8000c1a0
08:17:07 wrt kernel: [  115.208877] [<8000c1a8>] 0x8000c1a8
08:17:07 wrt kernel: [  115.212352] [<80486f44>] 0x80486f44
08:17:07 wrt kernel: [  115.215825] [<80071d10>] 0x80071d10
08:17:07 wrt kernel: [  115.219311] [<8002e798>] 0x8002e798
08:17:07 wrt kernel: [  115.222791] [<8038d690>] 0x8038d690
08:17:07 wrt kernel: [  115.226281] [<8002e820>] 0x8002e820
08:17:07 wrt kernel: [  115.229767] [<8f250104>] 0x8f250104 [mt76x02_lib@8f250000+0x9700]
08:17:07 wrt kernel: [  115.235833] [<800552c8>] 0x800552c8
08:17:07 wrt kernel: [  115.239322] [<8038d690>] 0x8038d690
08:17:07 wrt kernel: [  115.242808] [<8038d4e4>] 0x8038d4e4
08:17:07 wrt kernel: [  115.246283] [<80088858>] 0x80088858
08:17:07 wrt kernel: [  115.249769] [<80088b14>] 0x80088b14
08:17:07 wrt kernel: [  115.253249] [<800793b8>] 0x800793b8
08:17:07 wrt kernel: [  115.256732] [<804a4ef8>] 0x804a4ef8
08:17:07 wrt kernel: [  115.260213] [<80033164>] 0x80033164
08:17:07 wrt kernel: [  115.263688] [<8025b760>] 0x8025b760
08:17:07 wrt kernel: [  115.267170] [<80007488>] 0x80007488
08:17:07 wrt kernel: [  115.270645]
08:17:07 wrt kernel: [  115.272218] ---[ end trace 2801d9d058435b90 ]---
08:17:07 wrt kernel: [  115.276828] mtk_soc_eth 1e100000.ethernet eth0: transmit timed out
08:17:07 wrt kernel: [  115.283002] mtk_soc_eth 1e100000.ethernet eth0: dma_cfg:80000065
08:17:07 wrt kernel: [  115.288995] mtk_soc_eth 1e100000.ethernet eth0: tx_ring=0, base=0ebb0000, max=0, ctx=2635, dtx=2635, fdx=2590, next=2635
08:17:07 wrt kernel: [  115.299837] mtk_soc_eth 1e100000.ethernet eth0: rx_ring=0, base=0df50000, max=0, calc=777, drx=909
08:17:09 wrt kernel: [  115.938991] NMI backtrace for cpu 2
08:17:09 wrt kernel: [  115.939012] rcu_sched kthread starved for 7105 jiffies! g709 c708 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1
08:17:09 wrt kernel: [  115.939028] rcu_sched       R
08:17:09 wrt kernel: [  115.942505] CPU: 2 PID: 0 Comm: swapper/2 Tainted: G        W       4.14.215 #0
08:17:09 wrt kernel: [  115.952360]   running task
08:17:09 wrt kernel: [  115.955310] Stack :
08:17:09 wrt kernel: [  115.962584]     0     8      2 0x00100000
08:17:09 wrt kernel: [  115.965612]  00000000
08:17:09 wrt kernel: [  115.967694] Stack :
08:17:09 wrt kernel: [  115.971677]  00000000
08:17:09 wrt kernel: [  115.973935]  00000000
08:17:09 wrt kernel: [  115.976018]  00000000
08:17:09 wrt kernel: [  115.978272]  8fc3aca0
08:17:09 wrt kernel: [  115.980525]  80550000
08:17:09 wrt kernel: [  115.982782]  8fc57e38
08:17:09 wrt kernel: [  115.985035]  00000000
08:17:09 wrt kernel: [  115.987291]  8fc57e38
08:17:09 wrt kernel: [  115.989545]  00000000
08:17:09 wrt kernel: [  115.991799]  8fc57e38
08:17:09 wrt kernel: [  115.994056]  00000000
08:17:09 wrt kernel: [  115.996312]  80550000
08:17:09 wrt kernel: [  115.998564]  00000000
08:17:09 wrt kernel: [  116.000819]  81215380
08:17:09 wrt kernel: [  116.005329]  00000000
08:17:09 wrt kernel: [  116.007578]
08:17:09 wrt kernel: [  116.009838]  00000000
08:17:09 wrt kernel: [  116.011917]
08:17:09 wrt kernel: [  116.011925]  00000000
08:17:09 wrt kernel: [  116.014182]  00000003
08:17:09 wrt kernel: [  116.016264]  00000000
08:17:09 wrt kernel: [  116.018518]  80088714
08:17:09 wrt kernel: [  116.020771]  00000000
08:17:09 wrt kernel: [  116.023029]  ffff9c51
08:17:09 wrt kernel: [  116.025283]  00000000
08:17:09 wrt kernel: [  116.027537]  81215380
08:17:09 wrt kernel: [  116.029790]  00000001
08:17:09 wrt kernel: [  116.032047]  8fc57e38
08:17:09 wrt kernel: [  116.034301]  8fc0d6b8
08:17:09 wrt kernel: [  116.036556]  80550000
08:17:09 wrt kernel: [  116.038808]  1cc28237
08:17:09 wrt kernel: [  116.041063]  81215380
08:17:09 wrt kernel: [  116.045575]  00000000
08:17:09 wrt kernel: [  116.047823]
08:17:09 wrt kernel: [  116.050084]  8fc0d750
08:17:09 wrt kernel: [  116.052162]
08:17:09 wrt kernel: [  116.052167]  00000000 00000000
08:17:09 wrt kernel: [  116.054433]  00000003
08:17:09 wrt kernel: [  116.056515]  00000124
08:17:09 wrt kernel: [  116.059546]  8054c1e8
08:17:09 wrt kernel: [  116.061802]  00000038
08:17:09 wrt kernel: [  116.064058]  80554610
08:17:09 wrt kernel: [  116.066312]  8049e0f8
08:17:09 wrt kernel: [  116.068568]  804a0478
08:17:09 wrt kernel: [  116.070822]  20202020
08:17:09 wrt kernel: [  116.073079]  8fc57e38
08:17:09 wrt kernel: [  116.075333]  52202020
08:17:09 wrt kernel: [  116.077589]  80550000
08:17:09 wrt kernel: [  116.082100]  80550000
08:17:09 wrt kernel: [  116.084348]
08:17:09 wrt kernel: [  116.084356]  00000000
08:17:09 wrt kernel: [  116.086610]  8fc0d504
08:17:09 wrt kernel: [  116.090946]  80550000
08:17:09 wrt kernel: [  116.093196]
08:17:09 wrt kernel: [  116.093201]  000e5414 00000000
08:17:09 wrt kernel: [  116.095467]  00000003
08:17:09 wrt kernel: [  116.097542]  8fc0d698 00000000
08:17:09 wrt kernel: [  116.100582]  804a3c90
08:17:09 wrt kernel: [  116.102840]  00000000
08:17:09 wrt kernel: [  116.105872]  80550000
08:17:09 wrt kernel: [  116.108124]  00000002
08:17:09 wrt kernel: [  116.110379]  00000000
08:17:09 wrt kernel: [  116.114891]  8fc57ebc
08:17:09 wrt kernel: [  116.117139]
08:17:09 wrt kernel: [  116.117147]  800682b8
08:17:09 wrt kernel: [  116.119400]  80554500
08:17:09 wrt kernel: [  116.121482]  81241420
08:17:09 wrt kernel: [  116.123739]  8054c0cc
08:17:09 wrt kernel: [  116.125992]  00000001
08:17:09 wrt kernel: [  116.128245]  000000e0
08:17:09 wrt kernel: [  116.132755]  80550000
08:17:09 wrt kernel: [  116.135006]
08:17:09 wrt kernel: [  116.135010]  00000000 802ae4f0
08:17:09 wrt kernel: [  116.137273]  00000200
08:17:09 wrt kernel: [  116.139348]  00000008 806b0008
08:17:09 wrt kernel: [  116.142391]  00000000
08:17:09 wrt kernel: [  116.144645]
08:17:09 wrt kernel: [  116.147678]  ffff9c51
08:17:09 wrt kernel: [  116.149925]  ...
08:17:09 wrt kernel: [  116.152017]  800887c0
08:17:09 wrt kernel: [  116.154271] Call Trace:
08:17:09 wrt kernel: [  116.156098]  8fc3aca0
08:17:09 wrt kernel: [  116.158401] [<8049e0f8>] 0x8049e0f8
08:17:09 wrt kernel: [  116.160778]  04800000
08:17:09 wrt kernel: [  116.163041] [<802ae4f0>] 0x802ae4f0
08:17:09 wrt kernel: [  116.166501]  80554500
08:17:09 wrt kernel: [  116.168768] [<8000c1a0>] 0x8000c1a0
08:17:09 wrt kernel: [  116.172226]  00000000
08:17:09 wrt kernel: [  116.174486] [<8000c1a8>] 0x8000c1a8
08:17:09 wrt kernel: [  116.177948]
08:17:09 wrt kernel: [  116.180207] [<80486f44>] 0x80486f44
08:17:09 wrt kernel: [  116.183668]  ...
08:17:09 wrt kernel: [  116.185755] [<80072ce4>] 0x80072ce4
08:17:09 wrt kernel: [  116.191040] [<8048df64>] 0x8048df64
08:17:09 wrt kernel: [  116.194505] Call Trace:
08:17:09 wrt kernel: [  116.197970] [<80008f30>] 0x80008f30
08:17:09 wrt kernel: [  116.198003] [<80088714>] 0x80088714
08:17:09 wrt kernel: [  116.200411] [<80008f30>] 0x80008f30
08:17:09 wrt kernel: [  116.203881] [<804a0478>] 0x804a0478
08:17:09 wrt kernel: [  116.207339] [<8048e050>] 0x8048e050
08:17:09 wrt kernel: [  116.210808] [<804a3c90>] 0x804a3c90
08:17:09 wrt kernel: [  116.214269] [<804a49f4>] 0x804a49f4
08:17:09 wrt kernel: [  116.217738] [<800682b8>] 0x800682b8
08:17:09 wrt kernel: [  116.221195] [<80051850>] 0x80051850
08:17:09 wrt kernel: [  116.224663] [<800887c0>] 0x800887c0
08:17:09 wrt kernel: [  116.228126] [<80086678>] 0x80086678
08:17:09 wrt kernel: [  116.231597] [<80084ce4>] 0x80084ce4
08:17:09 wrt kernel: [  116.235059] [<8008658c>] 0x8008658c
08:17:09 wrt kernel: [  116.238535] [<80080000>] 0x80080000
08:17:09 wrt kernel: [  116.241986] [<80085ac8>] 0x80085ac8
08:17:09 wrt kernel: [  116.245455] [<80081d2c>] 0x80081d2c
08:17:09 wrt kernel: [  116.248929] [<80089238>] 0x80089238
08:17:09 wrt kernel: [  116.252413] [<80084784>] 0x80084784
08:17:09 wrt kernel: [  116.255850] [<8009a288>] 0x8009a288
08:17:09 wrt kernel: [  116.259315] [<8004c108>] 0x8004c108
08:17:09 wrt kernel: [  116.262780] [<8025c250>] 0x8025c250
08:17:09 wrt kernel: [  116.266256] [<8004bfd8>] 0x8004bfd8
08:17:09 wrt kernel: [  116.269722] [<80332ab4>] 0x80332ab4
08:17:09 wrt kernel: [  116.273198] [<8004bfd8>] 0x8004bfd8
08:17:09 wrt kernel: [  116.276659] [<80077f64>] 0x80077f64
08:17:09 wrt kernel: [  116.280131] [<8004bfd8>] 0x8004bfd8
08:17:09 wrt kernel: [  116.283591] [<800793b8>] 0x800793b8
08:17:09 wrt kernel: [  116.287057] [<80006f78>] 0x80006f78
08:17:09 wrt kernel: [  116.290519] [<80078360>] 0x80078360
08:17:09 wrt kernel: [  116.293996]
08:17:09 wrt kernel: [  116.297454] [<80073670>] 0x80073670
08:17:09 wrt kernel: [  116.305855] [<8025c038>] 0x8025c038
08:17:09 wrt kernel: [  116.309328] [<8025bee4>] 0x8025bee4
08:17:09 wrt kernel: [  116.312807] [<8025c0a4>] 0x8025c0a4
08:17:09 wrt kernel: [  116.316277] [<80073670>] 0x80073670
08:17:09 wrt kernel: [  116.319752] [<803a7ae8>] 0x803a7ae8
08:17:09 wrt kernel: [  116.323231] [<804a4dbc>] 0x804a4dbc
08:17:09 wrt kernel: [  116.326705] [<8031c0e0>] 0x8031c0e0
08:17:09 wrt kernel: [  116.330173] [<8025b760>] 0x8025b760
08:17:09 wrt kernel: [  116.333658] [<80007488>] 0x80007488
08:17:09 wrt kernel: [  116.337131] [<803a7b94>] 0x803a7b94
08:17:09 wrt kernel: [  116.340628] [<8006bf20>] 0x8006bf20
08:17:09 wrt kernel: [  116.344099] [<8006bfbc>] 0x8006bfbc
08:17:09 wrt kernel: [  116.347600] [<8e825a6c>] 0x8e825a6c [nf_flow_table@8e824000+0x3370]
08:17:09 wrt kernel: [  116.353857] [<8e812870>] 0x8e812870 [xt_FLOWOFFLOAD@8e812000+0xc10]
08:17:09 wrt kernel: [  116.360102] [<803f1ec0>] 0x803f1ec0
08:17:09 wrt kernel: [  116.363601] [<8f0a561c>] 0x8f0a561c [ip_tables@8f0a4000+0x2b30]
08:17:09 wrt kernel: [  116.369548] [<803a0fb8>] 0x803a0fb8
08:17:09 wrt kernel: [  116.373040] [<803aabd8>] 0x803aabd8
08:17:09 wrt kernel: [  116.376530] [<803aa770>] 0x803aa770
08:17:09 wrt kernel: [  116.380009] [<803a9a28>] 0x803a9a28
08:17:09 wrt kernel: [  116.383487] [<803a8f90>] 0x803a8f90
08:17:09 wrt kernel: [  116.386961] [<80362b7c>] 0x80362b7c
08:17:09 wrt kernel: [  116.390455] [<803652a0>] 0x803652a0
08:17:09 wrt kernel: [  116.393936] [<8046ede0>] 0x8046ede0
08:17:09 wrt kernel: [  116.397428] [<8046f32c>] 0x8046f32c
08:17:09 wrt kernel: [  116.400913] [<8046f778>] 0x8046f778
08:17:09 wrt kernel: [  116.404399] [<8046f39c>] 0x8046f39c
08:17:09 wrt kernel: [  116.407871] [<8036286c>] 0x8036286c
08:17:09 wrt kernel: [  116.411339] [<80011860>] 0x80011860
08:17:09 wrt kernel: [  116.414821] [<80362e58>] 0x80362e58
08:17:09 wrt kernel: [  116.418296] [<80365738>] 0x80365738
08:17:09 wrt kernel: [  116.421764] [<800785a0>] 0x800785a0
08:17:09 wrt kernel: [  116.425250] [<804a4ef8>] 0x804a4ef8
08:17:09 wrt kernel: [  116.428723] [<80033164>] 0x80033164
08:17:09 wrt kernel: [  116.432194] [<8025b760>] 0x8025b760
08:17:09 wrt kernel: [  116.435670] [<80007488>] 0x80007488
\```

</p>
</details>
2

highly unlikely anything to do with dnsmasq... your log indicates it has something to do with stalls and cpu numbers...

  • perhaps you should explain in more detail anything you are running that is non-default ( radius?, sw/hw offloading?, irqbalance?, packet-steering?, etc. etc. )
  • when was the last known good version... and did you run the same combination of software then?
2 Likes
3

Indeed, I wrote "maybe due to dnsmasq" as the issue systematically arises when I plug one of the laptop in the network. But you're right that's only a light guess.

The extras that run on the router are:

  • hardware offloading (MT7621)
  • adblock (with 80k rules)
  • wireguard (daemon launched but no active connection for days)
  • there are 3 wifi networks on 2.4GHz (one guest which only access the WAN, one restricted only reachable from the LAN), 1 on 5.8GHz, all in WPA3 with hostapd-openssl
  • a few misc packets: usb/vfat mounting but not used ; ddns-scripts ; email with fdm and mstmp but not used from what I see when the crash arose.

The 4 CPUs on the router are most of the time below 25%. Free memory exceeds 180MB.

1 Like
4

somethings for you to investigate...

  • disable hardware offloading
  • check the bug tracker ( flyspray ) for your soc
  • try master / snapshot
1 Like
5

I will try, for sure. In the meantime, I've received some new weird syslog messages. Again, it happens just after a Dnsmasq action:

Feb  8 15:42:38 wrt hostapd: wlan1: STA-OPMODE-N_SS-CHANGED 5c:3a:45:dc:a4:07 2
Feb  8 15:42:38 wrt hostapd: wlan1: STA 5c:3a:45:dc:a4:07 IEEE 802.11: associated (aid 1)
Feb  8 15:42:38 wrt hostapd: wlan1: AP-STA-CONNECTED 5c:3a:45:dc:a4:07
Feb  8 15:42:38 wrt hostapd: wlan1: STA 5c:3a:45:dc:a4:07 RADIUS: starting accounting session 39AC7A7655FBA505
Feb  8 15:42:38 wrt hostapd: wlan1: STA 5c:3a:45:dc:a4:07 WPA: pairwise key handshake completed (RSN)
Feb  8 15:42:38 wrt dnsmasq-dhcp[3946]: DHCPREQUEST(br-lan) 10.4.0.132 5c:3a:45:dc:a4:07
Feb  8 15:42:38 wrt dnsmasq-dhcp[3946]: DHCPACK(br-lan) 10.4.0.132 5c:3a:45:dc:a4:07 magicbookFlo
Feb  8 15:42:39 wrt dnsmasq[3946]: read /etc/hosts - 4 addresses
Feb  8 15:42:39 wrt dnsmasq[3946]: read /tmp/hosts/odhcpd - 3 addresses
Feb  8 15:42:39 wrt dnsmasq[3946]: read /tmp/hosts/dhcp.cfg01411c - 25 addresses
Feb  8 15:42:40 wrt dnsmasq[3946]: read /etc/hosts - 4 addresses
Feb  8 15:42:40 wrt dnsmasq[3946]: read /tmp/hosts/odhcpd - 4 addresses
Feb  8 15:42:40 wrt dnsmasq[3946]: read /tmp/hosts/dhcp.cfg01411c - 25 addresses
Feb  8 15:52:40 wrt kernel: [27019.474078] mt76x2e 0000:02:00.0: Firmware Version: 0.0.00
Feb  8 15:52:40 wrt kernel: [27019.479561] mt76x2e 0000:02:00.0: Build: 1
Feb  8 15:52:40 wrt kernel: [27019.483739] mt76x2e 0000:02:00.0: Build Time: 201507311614____
Feb  8 15:52:40 wrt kernel: [27019.512450] mt76x2e 0000:02:00.0: Firmware running!
Feb  8 15:52:40 wrt kernel: [27019.522612] ieee80211 phy1: Hardware restart was requested
Feb  8 15:53:33 wrt kernel: [27072.453446] mt76x2e 0000:02:00.0: Firmware Version: 0.0.00
Feb  8 15:53:33 wrt kernel: [27072.458928] mt76x2e 0000:02:00.0: Build: 1
Feb  8 15:53:33 wrt kernel: [27072.463253] mt76x2e 0000:02:00.0: Build Time: 201507311614____
Feb  8 15:53:33 wrt kernel: [27072.491828] mt76x2e 0000:02:00.0: Firmware running!
Feb  8 15:53:33 wrt kernel: [27072.501999] ieee80211 phy1: Hardware restart was requested
Feb  8 15:54:00 wrt kernel: [27099.013473] mt76x2e 0000:02:00.0: Firmware Version: 0.0.00
Feb  8 15:54:00 wrt kernel: [27099.018994] mt76x2e 0000:02:00.0: Build: 1
Feb  8 15:54:00 wrt kernel: [27099.023218] mt76x2e 0000:02:00.0: Build Time: 201507311614____
Feb  8 15:54:00 wrt kernel: [27099.061612] mt76x2e 0000:02:00.0: Firmware running!
Feb  8 15:54:00 wrt kernel: [27099.081868] ieee80211 phy1: Hardware restart was requested

[and that continues indefinitely]

6

Is your 5 GHz radio working? This one is your wireless hardware acting up.

Feb  8 15:52:40 wrt kernel: [27019.474078] mt76x2e 0000:02:00.0: Firmware Version: 0.0.00
Feb  8 15:52:40 wrt kernel: [27019.479561] mt76x2e 0000:02:00.0: Build: 1
Feb  8 15:52:40 wrt kernel: [27019.483739] mt76x2e 0000:02:00.0: Build Time: 201507311614____
Feb  8 15:52:40 wrt kernel: [27019.512450] mt76x2e 0000:02:00.0: Firmware running!
Feb  8 15:52:40 wrt kernel: [27019.522612] ieee80211 phy1: Hardware restart was requested

See the GitHub issue:

As for the kernel oops, that's probably not related to dnsmasq either.

1 Like
7

For this latter issue, I followed that post MT76 driver issues V19.07 - Feedback - #9 by db260179 and set temporarily wifi country code to undefined/world (frequencies, power level and DFS are compatible with my countries' regulations). I'll see what it gives on a period.

8

Well, as your first error comes from netfilter flow tables, I would definitely disable hardware offloading...

Like already said , the remaining errors seem to be WiFi restarts, or net scheduler errors.

So far nothing about dnsmasq visible in logs...

1 Like
9

A couple of days later, after having hardware offloading disabled, no more reboot. I'll update the thread if I have anything new.
It seems that I didn't use the right keywords when searching the forum, as there are several threads actually about issues on hardware offloading on this CPU.

1 Like
10

Still no reboot since I disabled hardware offloading. I wish of course one manages to fix it :slight_smile: