crash log on mir3g 20200725

<6>[   47.995557] br-lan: port 2(wlan0) entered forwarding state
<1>[61382.989176] CPU 0 Unable to handle kernel paging request at virtual address 000021b0, epc == 805d8a4c, ra == 805d8a44
<4>[61383.000775] Oops[#1]:
<4>[61383.003092] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.4.52 #0
<4>[61383.009202] Workqueue: events swconfig_led_work_func
<4>[61383.014151] $ 0   : 00000000 00000001 00000000 0000000a
<4>[61383.019355] $ 4   : 8fe63458 8fc39580 00000004 00000106
<4>[61383.024557] $ 8   : feff7273 00000018 80808080 fefefeff
<4>[61383.029758] $12   : 00000000 34b5e6c7 ca8f50bd 36190000
<4>[61383.034960] $16   : 00000001 8fd5ba61 80694d20 8f420088
<4>[61383.040161] $20   : 00000002 8fd5b82c 00000001 0000000e
<4>[61383.045363] $24   : 11800000 803831b8                  
<4>[61383.050574] $28   : 8fc54000 8fc55e28 00000002 805d8a44
<4>[61383.055783] Hi    : 00000000
<4>[61383.058644] Lo    : 000c7c00
<4>[61383.061511] epc   : 805d8a4c 0x805d8a4c
<4>[61383.065325] ra    : 805d8a44 0x805d8a44
<4>[61383.069137] Status: 11008403	KERNEL EXL IE 
<4>[61383.073302] Cause : 40800008 (ExcCode 02)
<4>[61383.077286] BadVA : 000021b0
<4>[61383.080149] PrId  : 0001992f (MIPS 1004Kc)
<4>[61383.084220] Modules linked in: ksmbd natcap qcserial pppoe ppp_async option l2tp_ppp cdc_mbim usb_wwan sierra_net sierra rndis_host qmi_wwan pptp pppox ppp_mppe ppp_generic mt76x2e mt76x2_common mt76x02_lib mt7603e mt76 mac80211 ipt_REJECT huawei_cdc_ncm cfg80211 cdc_ncm cdc_ether xt_time xt_tcpudp xt_tcpmss xt_statistic xt_state xt_socket 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_ipp2p xt_iface xt_hl xt_helper xt_hashlimit xt_esp xt_ecn xt_dscp xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_addrtype xt_TPROXY xt_TCPMSS xt_REDIRECT xt_NETMAP xt_MASQUERADE xt_LOG xt_IPMARK xt_HL xt_DSCP xt_CT xt_CLASSIFY wireguard usbserial usbnet usblp ts_fsm ts_bm slhc sch_cake r8152 nft_reject_ipv6 nft_reject_ipv4 nft_reject_inet nft_reject_bridge nft_reject nft_redir nft_quota nft_objref nft_numgen nft_meta_bridge nft_log nft_limit nft_hash nft_fwd_netdev nft_dup_netdev nft_ct nft_counter nf_tproxy_ipv6
<4>[61383.084423]  nf_tproxy_ipv4 nf_tables_set nf_tables nf_socket_ipv6 nf_socket_ipv4 nf_reject_ipv4 nf_nat_tftp nf_nat_snmp_basic nf_nat_sip nf_nat_rtsp nf_nat_pptp nf_nat_irc nf_nat_h323 nf_nat_ftp nf_nat_amanda nf_log_ipv4 nf_dup_netdev nf_conntrack_tftp nf_conntrack_snmp nf_conntrack_sip nf_conntrack_rtsp nf_conntrack_rtcache nf_conntrack_pptp nf_conntrack_netlink nf_conntrack_irc nf_conntrack_h323 nf_conntrack_ftp nf_conntrack_broadcast ts_kmp nf_conntrack_amanda nf_conncount macvlan iptable_raw iptable_nat iptable_mangle iptable_filter ipt_ah ipt_ECN ipheth ip_tables crc_ccitt compat_xtables compat cdc_wdm br_netfilter asn1_decoder natflow fuse tcp_bbr sch_tbf sch_ingress sch_htb sch_hfsc em_u32 cls_u32 cls_tcindex cls_route cls_matchall cls_fw cls_flow cls_basic act_skbedit act_mirred ledtrig_usbport ledtrig_heartbeat xt_set ip_set_list_set ip_set_hash_netportnet ip_set_hash_netport ip_set_hash_netnet ip_set_hash_netiface ip_set_hash_net ip_set_hash_mac ip_set_hash_ipportnet
<4>[61383.171097]  ip_set_hash_ipportip ip_set_hash_ipport ip_set_hash_ipmark ip_set_hash_ip ip_set_bitmap_port ip_set_bitmap_ipmac ip_set_bitmap_ip ip_set nfnetlink ip6table_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_NPT ip6t_rt ip6t_mh ip6t_ipv6header ip6t_hbh ip6t_frag ip6t_eui64 ip6t_ah nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 msdos ip6_gre ip_gre gre ifb sit l2tp_netlink l2tp_core udp_tunnel ip6_udp_tunnel ip6_tunnel tunnel6 tunnel4 ip_tunnel tun vfat fat autofs4 nls_utf8 nls_iso8859_1 nls_cp437 sha512_generic sha256_generic libsha256 sha1_generic seqiv jitterentropy_rng drbg md5 md4 hmac ghash_generic gf128mul gcm ecb des_generic libdes ctr cmac ccm arc4 uas usb_storage leds_gpio xhci_plat_hcd xhci_pci xhci_mtk xhci_hcd ohci_platform ohci_hcd softdog fsl_mph_dr_of ehci_platform ehci_fsl sd_mod scsi_mod ehci_hcd gpio_button_hotplug ext4 mbcache jbd2 exfat usbcore nls_base usb_common mii crc32c_generic
<4>[61383.257578]  [last unloaded: natcap]
<4>[61383.347427] Process kworker/0:0 (pid: 5, threadinfo=3e1a53bd, task=9268ed8f, tls=00000000)
<4>[61383.355654] Stack : 8fc398b0 8fc55e6c 806a0000 800521a0 8fc39580 805e0000 43f416e0 00000023
<4>[61383.363988]         ab34dfe5 0000000a 8fd5b82c 8fc19f00 81005a40 81008900 00000000 00000000
<4>[61383.372314]         00000000 806a0000 81005a40 80040f5c 81005a40 81005a40 00000008 81005a58
<4>[61383.380634]         80690000 806a0000 8fc19f00 8fc19f14 81005a40 00000008 81005a58 80690000
<4>[61383.388953]         806a0000 80041318 00000000 8fc39580 8fc1f000 8fc41dc4 80698df4 805d7928
<4>[61383.397273]         ...
<4>[61383.399706] Call Trace:
<4>[61383.399708] 
<4>[61383.403634] [<800521a0>] pick_next_task_idle+0xa8/0xb0
<4>[61383.408758] [<80040f5c>] process_one_work+0x244/0x498
<4>[61383.413785] [<80041318>] worker_thread+0x168/0x5ec
<4>[61383.418554] [<800411b0>] worker_thread+0x0/0x5ec
<4>[61383.423159] [<80046a28>] kthread+0x130/0x138
<4>[61383.427409] [<800468f8>] kthread+0x0/0x138
<4>[61383.431486] [<800468f8>] kthread+0x0/0x138
<4>[61383.435562] [<800468f8>] kthread+0x0/0x138
<4>[61383.439642] [<800068d8>] ret_from_kernel_thread+0x14/0x1c
<4>[61383.445015] 
<4>[61383.446493] Code: 00632e65  00000000  00000000 <800521b0> 00000000  00000000  800521a8  800520f8  800520b4 
<4>[61383.456215] 
<4>[61383.458715] ---[ end trace 55c124b0c4641206 ]---