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Unable to handle kernel paging request at virtual address 163cffac, epc == 80183de4, ra == 80183d70

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OmegaTron

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В очередной раз сев за комп обнаружил валящийся в syslog лог. Полез в веб-морду - ожидаемо зависла. Разбираться не стал, ребутнул через ssh. Сегодня только дошли руки посмотреть, что же там роутер накидал в лог 

May  1 09:54:47 ndm: kernel: CPU 0 Unable to handle kernel paging request at virtual address 163cffac, epc == 80183de4, ra == 80183d70
May  1 09:54:47 ndm: kernel: Oops[#1]:
May  1 09:54:47 ndm: kernel: Cpu 0
May  1 09:54:47 ndm: kernel: $ 0   : 00000000 00000065 163cffac 830c3e48
May  1 09:54:47 ndm: kernel: $ 4   : 163cffac 00000010 163d0000 ffffffeb
May  1 09:54:47 ndm: kernel: $ 8   : 00000010 00000000 00000000 00000000
May  1 09:54:47 ndm: kernel: $12   : 77065d4c 00000807 00000000 00000000
May  1 09:54:47 ndm: kernel: $16   : 830c3e48 803000d8 000089ff 803000d8
May  1 09:54:47 ndm: kernel: $20   : 77065cfc 00000000 00000000 7787d2c0
May  1 09:54:47 ndm: kernel: $24   : 00000000 77964d00                  
May  1 09:54:47 ndm: kernel: $28   : 830c2000 830c3e00 770665f0 80183d70
May  1 09:54:47 ndm: kernel: Hi    : 000000c9
May  1 09:54:47 ndm: kernel: Lo    : 000b930c
May  1 09:54:47 ndm: kernel: epc   : 80183de4 dev_get_by_name_rcu+0xa4/0xfc
May  1 09:54:47 ndm: kernel:     Tainted: P           O
May  1 09:54:47 ndm: kernel: ra    : 80183d70 dev_get_by_name_rcu+0x30/0xfc
May  1 09:54:47 ndm: kernel: Status: 1100ec03    KERNEL EXL IE 
May  1 09:54:47 ndm: kernel: Cause : 00800008
May  1 09:54:47 ndm: kernel: BadVA : 163cffac
May  1 09:54:47 ndm: kernel: PrId  : 00019650 (MIPS 24KEc)
May  1 09:54:47 ndm: kernel: Modules linked in: fastvpn(PO) hw_nat(O) mt76x2_ap(O) rtsoc_eth(PO) ip_set_hash_ip ip_set_hash_ipportip ip_set_hash_net ip_set_hash_ipport ip_set_hash_ipportnet ip_set_bitmap_port xt_set ip_set_bitmap_ipmac ip_set_hash_netiface ip_set_bitmap_ip ip_set_hash_netport ip_set_list_set usbextras(PO) nls_utf8 ip_set xt_IPMARK(O) nfsd xt_ACCOUNT(O) nls_cp1251 nfs usb_storage nfnetlink_log xt_DNETMAP(O) xt_length2(O) arptable_filter sd_mod ohci_hcd sr_mod nls_cp437 xt_DELUDE(O) xt_CHAOS(O) lockd auth_rpcgss sg ext4 xt_LOGMARK(O) nfnetlink_queue ebtable_broute xt_STEAL(O) nls_cp866 xt_ipp2p(O) xt_DHCPMAC(O) ebtable_filter jffs2 xt_psd(O) ebtable_nat ehci_hcd xt_TPROXY cifs xt_RAWNAT(O) xt_SYSRQ(O) xt_TARPIT(O) nf_conntrack_netlink usbcore ebt_redirect xt_geoip(O) xt_iprange xt_NOTRACK ipt_ULOG ip6t_rt xt_connbytes xt_addrtype xt_recent lzo_decompress ip6t_mh xt_string cdrom resetnds(PO) hmac ebt_dnat des_generic xt_iface(O) ebt_802_3 mtdoops_proc(O) nacct(PO) xt_comment nf_tproxy_c [...]
May  1 09:54:47 ndm: kernel: Process ndm (pid: 135, threadinfo=830c2000, task=83d46d20, tls=7706e960)
May  1 09:54:47 ndm: kernel: Stack : 7787d2c0 8018ada8 00000001 ffffffff 77065cdc 830c3e48 830c3e48 80186d44
May  1 09:54:47 ndm: kernel:         77065cfc 00000000 00000000 7787d2c0 77065cdc 8018b268 007ba000 83098ae0
May  1 09:54:47 ndm: kernel:         0000043c 80f66f40 32687465 00000000 00000000 00000000 77065d4c 00000000
May  1 09:54:47 ndm: kernel:         00000000 00000000 00000000 00000000 8383a8e0 77065cdc 000089ff 77065cdc
May  1 09:54:47 ndm: kernel:         000089ff 77065cdc 00000000 7787d2c0 770665f0 800ad914 80f66f40 83890658
May  1 09:54:47 ndm: kernel:         ...
May  1 09:54:47 ndm: kernel: Call Trace:
May  1 09:54:47 ndm: kernel: [<80183de4>] dev_get_by_name_rcu+0xa4/0xfc
May  1 09:54:47 ndm: kernel: [<80186d44>] dev_load+0x14/0x9c
May  1 09:54:47 ndm: kernel: [<8018b268>] dev_ioctl+0x34c/0x664
May  1 09:54:47 ndm: kernel: [<800ad914>] do_vfs_ioctl+0x48c/0x5c8
May  1 09:54:47 ndm: kernel: [<800ada98>] sys_ioctl+0x48/0x90
May  1 09:54:47 ndm: kernel: [<80011250>] stack_done+0x20/0x44
May  1 09:54:47 ndm: kernel: 
May  1 09:54:47 ndm: kernel: 
May  1 09:54:47 ndm: kernel: Code: 8fbf001c  00402021  01002821 
May  1 09:54:47 ndm: kernel:  10a00006  90610000  24a5ffff  14270004  24840001 
May  1 09:54:47 ndm: kernel: ---[ end trace fee9c31a07fa0035 ]---
May  1 09:54:48 ndm: Thread: failed to get thread 135 statistics: invalid argument.
May  1 09:55:38 ndm: Event::Acceptor: sending "Event::Type::Neighbour" to "Network::Interface::AccessPoint" 30 seconds.
May  1 09:55:47 ndm: Core::Watchdog: Timer holds REPOSITORY (25) lock 60 seconds acquired May  1 09:54:47.
May  1 09:56:08 ndm: Event::Acceptor: sending "Event::Type::Neighbour" to "Network::Interface::AccessPoint" 60 seconds.
May  1 09:56:38 ndm: Event::Acceptor: sending "Event::Type::Neighbour" to "Network::Interface::AccessPoint" 90 seconds.
May  1 09:56:47 ndm: Core::Watchdog: Timer holds REPOSITORY (25) lock 120 seconds acquired May  1 09:54:47.
May  1 09:57:08 ndm: Event::Acceptor: sending "Event::Type::Neighbour" to "Network::Interface::AccessPoint" 120 seconds.
May  1 09:57:38 ndm: Event::Acceptor: sending "Event::Type::Neighbour" to "Network::Interface::AccessPoint" 150 seconds.
May  1 09:57:47 ndm: Core::Watchdog: Timer holds REPOSITORY (25) lock 180 seconds acquired May  1 09:54:47.
May  1 09:58:08 ndm: Event::Acceptor: sending "Event::Type::Neighbour" to "Network::Interface::AccessPoint" 180 seconds.
May  1 09:58:38 ndm: Event::Acceptor: sending "Event::Type::Neighbour" to "Network::Interface::AccessPoint" 210 seconds.
May  1 09:58:47 ndm: Core::Watchdog: Timer holds REPOSITORY (25) lock 240 seconds acquired May  1 09:54:47.
May  1 09:59:08 ndm: Event::Acceptor: sending "Event::Type::Neighbour" to "Network::Interface::AccessPoint" 240 seconds.
May  1 09:59:38 ndm: Event::Acceptor: sending "Event::Type::Neighbour" to "Network::Interface::AccessPoint" 270 seconds.
May  1 09:59:47 ndm: Core::Watchdog: Timer holds REPOSITORY (25) lock 300 seconds acquired May  1 09:54:47.
May  1 10:00:08 ndm: Event::Acceptor: sending "Event::Type::Neighbour" to "Network::Interface::AccessPoint" 300 seconds.

И так вплоть до ребута.

Вот что было при обращении к веб-морде 

May  1 23:32:20 keenetic_omni nginx: 2018/05/01 23:32:20 [error] 407#0: *5257 upstream timed out (145: Unknown error) while reading response header from upstream, client: 192.168.0.10, server: my.keenetic.net, request: "POST /ci HTTP/1.1", upstream: "scgi://unix:/var/run/ndm.scgi.socket", host: "192.168.0.1:10080", referrer: "http://192.168.0.1:10080/"

Ну и на закуску, сообщение о неясном баге, датированное сегодняшним днём (ночью) 

May  3 00:18:42 ndm: kernel: BUG: Bad page map in process ndm  pte:126a5a1e pmd:830b8000
May  3 00:18:42 ndm: kernel: addr:00afb470 vm_flags:00100077 anon_vma:830a7c58 mapping:  (null) index:afb
May  3 00:18:42 ndm: kernel: Call Trace:
May  3 00:18:42 ndm: kernel: [<8028247c>] dump_stack+0x8/0x34
May  3 00:18:42 ndm: kernel: [<80080fa8>] print_bad_pte+0x18c/0x208
May  3 00:18:42 ndm: kernel: [<80084620>] handle_pte_fault+0x2c8/0x834
May  3 00:18:42 ndm: kernel: [<80084c1c>] handle_mm_fault+0x90/0xe8
May  3 00:18:42 ndm: kernel: [<80012f28>] do_page_fault+0xb8/0x390
May  3 00:18:42 ndm: kernel: [<800099a0>] ret_from_exception+0x0/0x10
May  3 00:18:42 ndm: kernel: 
Apr 25 02:05:24 pppd[395]: Remote message: Authentication success,Welcome!
Apr 25 02:05:24 pppd[395]: PAP authentication succeeded

Прошивка 2.11.C.0.0-2

 

 

Edited by OmegaTron
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OmegaTron Content Generator

OmegaTron

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Примечательно, но с того момента, как я переправил свой костыль для обхода дубликации правил iptables в виде дубликата исходного правила с ключём "-D", поставленного в начало скрипта, на проверку условий, как это предложено на гитхабе (лень было до этого с этим вопросом разбираться), роутер имеет вот уже недельный аптайм. До этого работа без самовольного ребута по неясным (для меня) причинам длилась от силы пару суток. Возможно это просто совпадение, но всё же.

Edited by OmegaTron
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