Bellow you can see kernel log. I don't know what to do.
u Apr 26 09:06:42 2018 kern.warn kernel: [ 34.517145] WARNING: CPU: 1 PID: 0 at net/sched/sch_generic.c:320 dev_watchdog+0x1ac/0x324
Thu Apr 26 09:06:42 2018 kern.info kernel: [ 34.533602] NETDEV WATCHDOG: eth0 (mtk_soc_eth): transmit queue 0 timed out
Thu Apr 26 09:06:42 2018 kern.warn kernel: [ 34.547465] Modules linked in: pppoe ppp_async ath10k_pci ath10k_core ath pppox ppp_generic nf_conntrack_ipv6 mt76x2e 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 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 ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables x_tables vfat fat nls_utf8 nls_iso8859_1 nls_cp437 mmc_block mtk_sd mmc_core leds_gpio xhci_mtk xhci_plat_hcd xhci_pci
Thu Apr 26 09:06:42 2018 kern.warn kernel: [ 34.688272] xhci_hcd ahci libahci libata sd_mod scsi_mod gpio_button_hotplug usbcore nls_base usb_common
Thu Apr 26 09:06:42 2018 kern.warn kernel: [ 34.707368] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.14.36 #0
Thu Apr 26 09:06:43 2018 kern.warn kernel: [ 34.719309] Stack : 00000000 00000000 00000000 00000000 805b7ada 00000034 00000000 00000000
Thu Apr 26 09:06:43 2018 kern.warn kernel: [ 34.735941] 8fc441f4 805548a7 804e3edc 00000001 00000000 00000001 8fc0dd68 532616c5
Thu Apr 26 09:06:43 2018 kern.warn kernel: [ 34.752573] 00000000 00000000 805b0000 00006920 00000000 0000013a 00000007 00000000
Thu Apr 26 09:06:43 2018 kern.warn kernel: [ 34.769206] 00000000 80560000 000acb28 00000000 00000000 00000000 80570000 803539d8
Thu Apr 26 09:06:43 2018 kern.warn kernel: [ 34.785836] 00000009 00000140 00000001 8fe72940 00000003 8027e1e8 00000004 805b0004
Thu Apr 26 09:06:43 2018 kern.warn kernel: [ 34.802465] ...
Thu Apr 26 09:06:43 2018 kern.warn kernel: [ 34.807324] Call Trace:
Thu Apr 26 09:06:43 2018 kern.warn kernel: [ 34.812210] [<80010498>] show_stack+0x58/0x100
Thu Apr 26 09:06:43 2018 kern.warn kernel: [ 34.821064] [<8042b9cc>] dump_stack+0x9c/0xe0
Thu Apr 26 09:06:43 2018 kern.warn kernel: [ 34.829729] [<8002e1d8>] __warn+0xe0/0x114
Thu Apr 26 09:06:43 2018 kern.warn kernel: [ 34.837872] [<8002e23c>] warn_slowpath_fmt+0x30/0x3c
Thu Apr 26 09:06:43 2018 kern.warn kernel: [ 34.847757] [<803539d8>] dev_watchdog+0x1ac/0x324
Thu Apr 26 09:06:43 2018 kern.warn kernel: [ 34.857127] [<80085f64>] call_timer_fn.isra.3+0x24/0x84
Thu Apr 26 09:06:43 2018 kern.warn kernel: [ 34.867520] [<8008617c>] run_timer_softirq+0x1b8/0x244
Thu Apr 26 09:06:43 2018 kern.warn kernel: [ 34.877759] [<80448bb0>] __do_softirq+0x128/0x2ec
Thu Apr 26 09:06:43 2018 kern.warn kernel: [ 34.887122] [<800328e0>] irq_exit+0x98/0xcc
Thu Apr 26 09:06:43 2018 kern.warn kernel: [ 34.895459] [<8023afac>] plat_irq_dispatch+0xfc/0x138
Thu Apr 26 09:06:43 2018 kern.warn kernel: [ 34.905503] [<8000b5a8>] except_vec_vi_end+0xb8/0xc4
Thu Apr 26 09:06:43 2018 kern.warn kernel: [ 34.915377] [<8000cf70>] r4k_wait_irqoff+0x1c/0x24
Thu Apr 26 09:06:43 2018 kern.warn kernel: [ 34.924926] [<8006621c>] do_idle+0xe4/0x168
Thu Apr 26 09:06:43 2018 kern.warn kernel: [ 34.933246] [<80066498>] cpu_startup_entry+0x24/0x2c
Thu Apr 26 09:06:43 2018 kern.warn kernel: [ 34.943215] ---[ end trace fceba6b07c2cbae8 ]---
Thu