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Opened 2 years ago

Closed 2 years ago

#20727 closed defect (fixed)

CPU 0 Unable to handle kernel paging request at virtual address

Reported by: webtron Owned by: developers
Priority: high Milestone: Designated Driver (Trunk)
Component: kernel Version: Trunk
Keywords: Cc:

Description (last modified by florian)

I'm getting this error a lot but it appears to be random. The AP needs a reboot to sort itself out but most cli commands give a seg fault error. These devices are remote so it's hard to access them when they do this and hence hard to debug. This is on OM2P-LC, UBNT Airrouters and tplink 740N all configured as dumb ap's. Trunk version 46434

Sun Oct 11 20:56:39 2015 kern.alert kernel: [494175.337247] CPU 0 Unable to handle kernel paging request at virtual address 00500014, epc == 80115378, ra == 8010a7c4
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.346640] Oops[#3]:
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.348852] CPU: 0 PID: 16277 Comm: rm Tainted: G      D         4.1.2 #1
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.355705] task: 8182d420 ti: 8182a000 task.ti: 8182a000
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.361163] $ 0   : 00000000 fffffff8 8108eca4 8108a560
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.366459] $ 4   : 834217f8 8182bdf8 8182bd90 00000000
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.371753] $ 8   : 00000010 00bed9ac 8268b380 00000000
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.377048] $12   : 7fb0ed90 00000000 00000000 00000000
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.382344] $16   : 00500000 834217f8 8182bdf8 00000000
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.387638] $20   : 0000000b 4d600a38 82648019 77fd6000
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.392934] $24   : 00000000 8016c130                  
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.398230] $28   : 8182a000 8182bcf8 00000000 8010a7c4
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.403525] Hi    : 000001cb
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.406477] Lo    : 00001e75
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.409454] epc   : 80115378 __d_lookup+0x78/0x150
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.414311] ra    : 8010a7c4 lookup_fast+0x1f8/0x31c
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.419324] Status: 1000f403	KERNEL EXL IE 
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.423576] Cause : 00800008
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.426529] BadVA : 00500014
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.429481] PrId  : 00019374 (MIPS 24Kc)
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.433471] Modules linked in: ath9k ath9k_common iptable_nat ebtable_nat ebtable_filter ebtable_broute ath9k_hw ath nf_nat_ipv4 nf_conntrack_ipv4 mac80211 iptable_mangle iptable_filter ipt_REJECT ipt_MASQUERADE ip_tables ebtables ebt_vlan ebt_stp ebt_redirect ebt_pkttype ebt_mark_m ebt_mark ebt_limit ebt_among ebt_802_3 cfg80211 xt_time xt_tcpudp xt_nat xt_multiport xt_mark xt_mac xt_limit xt_id xt_comment xt_TCPMSS xt_REDIRECT xt_LOG x_tables nf_reject_ipv4 Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.493900] Process rm (pid: 16277, threadinfo=8182a000, task=8182d420, tls=77fe3644)
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.501787] Stack : 82648019 8268b000 fffffff6 8182bdf0 ffffffec 82648019 8182bdf0 8182bdf0
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.501787] 	  8182bd88 00000001 8182bed0 8182bd90 83a84910 8010a7c4 83a84910 834217f8
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.501787] 	  83afcca0 83464e58 00000001 81082214 8182bdf0 8182bdf0 00000000 ffffff9c
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.501787] 	  8182bed0 ffffff69 7fb0ef84 77fd6000 00000000 8010c604 00000013 800ceb00
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.501787] 	  00000000 00000cd4 81007ee0 8340c0d4 8182be1c 81007ee0 00000000 00000000
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.501787] 	  ...
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.537293] Call Trace:
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.539822] [<80115378>] __d_lookup+0x78/0x150
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.544342] [<8010a7c4>] lookup_fast+0x1f8/0x31c
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.549027] [<8010c604>] path_lookupat+0xe0/0x710
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.553802] [<8010cc64>] filename_lookup+0x30/0x9c
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.558665] [<8010e194>] user_path_at_empty+0x64/0xa4
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.563784] [<8010e1e8>] user_path_at+0x14/0x20
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.568382] [<80104104>] vfs_fstatat+0x64/0xd0
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.572897] [<80104728>] SyS_lstat64+0x18/0x3c
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.577417] [<80062b3c>] handle_sys+0x11c/0x140
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.582003] 
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.583559] 
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.583559] Code: 8c500000  1200002c  00009821 <8e020014> 14550027  00000000  8e020008  14510024  00000000 
Sun Oct 11 20:56:39 2015 kern.warn kernel: [494175.593695] ---[ end trace bc81ea644298e349 ]---

Attachments (0)

Change History (11)

comment:1 Changed 2 years ago by florian

  • Description modified (diff)

Are you doing specific filesystem operations when this crash occurs? It could be pretty much anything involving reading/writing to/from flash or an externally attached medium.

comment:2 Changed 2 years ago by webtron

No the only thing I have been able to pinpoint is when I restarted the wifi and it occurred once. Here's the log from the wifi restart.
Sat Oct 3 00:02:13 2015 daemon.notice netifd: Network device 'wlan0-1' link is down
Sat Oct 3 00:02:13 2015 kern.info kernel: [168832.491602] br-lan: port 4(wlan0-1) entered disabled state
Sat Oct 3 00:02:13 2015 kern.info kernel: [168832.503718] device wlan0-1 left promiscuous mode
Sat Oct 3 00:02:13 2015 kern.info kernel: [168832.507219] br-lan: port 4(wlan0-1) entered disabled state
Sat Oct 3 00:02:13 2015 kern.alert kernel: [168832.530275] CPU 0 Unable to handle kernel paging request at virtual address 00000000, epc == 801ed854, ra == 801ed838
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.539728] Oops#1:
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.541874] CPU: 0 PID: 17055 Comm: hostapd Not tainted 4.1.2 #8
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.547948] task: 83a82840 ti: 83356000 task.ti: 83356000
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.553406] $ 0 : 00000000 00000000 8335f8d0 8335f910
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.558702] $ 4 : 80380000 8335f90c 00000000 00000001
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.563996] $ 8 : 82c14a00 00000033 001c0066 00000001
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.569291] $12 : 00000000 00000000 00000000 00000000
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.574588] $16 : 80380000 832c22b0 80375dd0 80370000
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.579881] $20 : 80347df4 80348030 00100100 00000008
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.585177] $24 : 00000000 801ee3a8
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.590471] $28 : 83356000 83357b30 00000000 801ed838
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.595768] Hi : 000001d2
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.598720] Lo : 00000004
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.601706] epc : 801ed854 driver_deferred_probe_del+0x3c/0x60
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.607760] ra : 801ed838 driver_deferred_probe_del+0x20/0x60
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.613824] Status: 1000f403 KERNEL EXL IE
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.618078] Cause : 0080000c
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.621029] BadVA : 00000000
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.623983] PrId : 00019374 (MIPS 24Kc)
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.627971] Modules linked in: ath9k ath9k_common iptable_nat ebtable_nat ebtable_filter ebtable_broute ath9k_hw ath nf_nat_ipv4 nf_conntrack_ipv4 mac80211 iptable_mangle iptable_filter ipt_REJECT ipt_MASQUERADE ip_tables ebtables ebt_vlan ebt_stp ebt_redirect ebt_pkttype ebt_mark_m ebt_mark ebt_limit ebt_among ebt_802_3 cfg80211 xt_time xt_tcpudp xt_nat xt_multiport xt_mark xt_mac xt_limit xt_id xt_comment xt_TCPMSS xt_REDIRECT xt_LOG x_tables nf_reject_ipv4 Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.688399] Process hostapd (pid: 17055, threadinfo=83356000, task=83a82840, tls=77a85644)
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.696722] Stack : 8335fd88 8019a618 00000011 832c22b0 832c22b0 832c22b0 8387d634 801ea6ec
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.696722] 832c22b0 8019a778 80347df4 00150040 832c2000 832c22b0 00000004 8025b7e4
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.696722] 82dc9900 bcab98c2 83357b94 832c2000 83357bd8 82dc9900 80348030 802403c0
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.696722] 00000004 8026951c 82d9f000 833240c0 83357ba0 83357ba0 832c2000 00000000
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.696722] 832c2408 83357c74 83b91000 00000000 00000004 80240468 83a82870 83a82840
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.696722] ...
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.732227] Call Trace:
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.734759] [<801ed854>] driver_deferred_probe_del+0x3c/0x60
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.740490] [<801ea6ec>] device_del+0x160/0x1f0
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.745108] [<802403c0>] rollback_registered_many+0x300/0x380
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.750905] [<80240468>] rollback_registered+0x28/0x44
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.756119] [<80242df0>] unregister_netdevice_queue+0x78/0xc0
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.762009] [<8319a4b4>] ieee80211_csa_finish+0x23a8/0x24c4 [mac80211]
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.768552]
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.770073]
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.770073] Code: 02002021 8c460044 aca60004 <acc50000> ac430040 ac430044 8fbf001c 8fb10018 8fb00014
Sat Oct 3 00:02:13 2015 kern.warn kernel: [168832.780826] ---[ end trace e8094fecd70e5104 ]---

There's no external medium attached.
The AP's use curl to pull a config file from a server and output it to /tmp. This file is generally empty so nothing else happens.
The same hardware with the same functions using version 41336 didn't display this problem.
Do both of these logs point to a read/write error?

comment:3 Changed 2 years ago by anonymous

root@Ruijie:/# wifi reload >/dev/null 2>/dev/null &
root@Ruijie:/# [ 258.420000] br-lan: port 2(ra0) entered disabled state
[ 258.450000] br-guest: port 1(ra1) entered disabled state
[ 259.170000] CPU 0 Unable to handle kernel paging request at virtual address 00000004, epc == 80035944, ra == 8003593c
[ 259.170000] Oops#1:
[ 259.170000] CPU: 0 PID: 242 Comm: kworker/0:2 Tainted: P 3.18.14 #18
[ 259.170000] task: 838ca1e8 ti: 83ae4000 task.ti: 83ae4000
[ 259.170000] $ 0 : 00000000 00000000 00000000 ffffff00
[ 259.170000] $ 4 : 832a1080 832a1080 8108b700 00000001
[ 259.170000] $ 8 : 00000001 0000e400 00000000 00200020
[ 259.170000] $12 : 0000003c 773f03a0 00000001 77460000
[ 259.170000] $16 : 83ae2280 832a1080 80325410 00000000
[ 259.170000] $20 : 00000001 80320000 80325420 80325410
[ 259.170000] $24 : 000003e8 80040a78
[ 259.170000] $28 : 83ae4000 83ae5e60 00000008 8003593c
[ 259.170000] Hi : 00000009
[ 259.170000] Lo : 00000001
[ 259.170000] epc : 80035944 process_one_work+0x40/0x338
[ 259.170000] Tainted: P
[ 259.170000] ra : 8003593c process_one_work+0x38/0x338
[ 259.170000] Status: 1100e402 KERNEL EXL
[ 259.170000] Cause : 40800008
[ 259.170000] BadVA : 00000004
[ 259.170000] PrId : 00019650 (MIPS 24KEc)
[ 259.170000] Modules linked in: pppoe ppp_async l2tp_ppp iptable_nat pptp pppox ppp_mppe ppp_generic nf_nat_pptp nf_nat_ipv4 nf_nat_amanda nf_conntrack_pptp nf_conntrack_ipv6 nf_conntrack_ipv4 nf_conntrack_amanda ipt_REJECT ipt_MASQUERADE xt_time xt_tcpudp xt_tcpmss xt_string xt_statistic xt_state xt_recent xt_quota xt_policy xt_pkttype xt_owner xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_id 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_TCPMSS xt_REDIRECT xt_NFLOG xt_NETMAP xt_LOG xt_HL xt_DSCP xt_CT xt_CLASSIFY ts_kmp ts_fsm ts_bm slhc nfnetlink_log nf_reject_ipv4 nf_nat_tftp nf_nat_snmp_basic nf_nat_sip nf_nat_proto_gre nf_nat_masquerade_ipv4 nf_nat_irc nf_nat_h323 nf_nat_ftp nf_nat nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_tftp nf_conntrack_snmp nf_conntrack_sip nf_conntrack_rtcache nf_conntrack_proto_gre nf_conntrack_irc nf_conntrack_h323 nf_conntrack_ftp nf_conntrack_broadcast nf_conntrack iptable_raw iptable_mangle iptable_filter ipt_ah ipt_ECN ip_tables crc_itu_t crc_ccitt compat_xtables mt7620(P) act_skbedit act_mirred em_u32 cls_u32 cls_tcindex cls_flow cls_route cls_fw sch_ingress i2c_dev ledtrig_usbdev xt_set ip_set_list_set ip_set_hash_netport ip_set_hash_netiface ip_set_hash_net ip_set_hash_ipportnet 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 ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_common ip6table_raw ip6table_mangle ip6table_filter ip6_tables x_tables ip_gre gre 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 tunnel6 tunnel4 ip_tunnel af_key xfrm_user xfrm_ipcomp xfrm_algo vfat fat autofs4 nls_iso8859_1 nls_cp437 regmap_spi regmap_i2c i2c_core regmap_core lzo_decompress lzo_compress ipv6 eeprom_93cx6 chainiv eseqiv crypto_wq sha1_generic krng rng md5 hmac ecb des_generic deflate zlib_inflate zlib_deflate cbc authenc aead arc4 crypto_blkcipher mmc_block usb_storage sdhci_pltfm sdhci mtk_sd mmc_core leds_gpio ohci_platform ohci_hcd ehci_platform ehci_hcd sd_mod scsi_mod gpio_button_hotplug ext4 crc16 jbd2 mbcache usbcore nls_base usb_common crypto_hash
[ 259.170000] Process kworker/0:2 (pid: 242, threadinfo=83ae4000, task=838ca1e8, tls=00000000)
[ 259.170000] Stack : 80322c60 8000a6a4 00000000 80040a78 1100e403 00000039 83ae2280 83ae2280

80325410 83ae2298 802cf928 00000001 80320000 80325420 80325410 80036654
00000000 00000000 00000000 83ae5eac 83ae2300 83ae2280 80370000 802d0000
800363a4 80320000 80325810 80333818 00000000 80039d54 00000001 00000000
00000000 802de260 00000000 83ae5e38 83ae2280 00000000 83ae5ef8 83ae5ef8
...

[ 259.170000] Call Trace:
[ 259.170000] [<80035944>] process_one_work+0x40/0x338
[ 259.170000] [<80036654>] worker_thread+0x2b0/0x40c
[ 259.170000] [<80039d54>] kthread+0xd8/0xe4
[ 259.170000] [<80004878>] ret_from_kernel_thread+0x14/0x1c
[ 259.170000]
[ 259.170000]
Code: 00a08821 00409821 8e120024 <8c420004> 8c550080 8e42000c 30420004 1440000d 7eb50140
[ 259.980000] ---[ end trace ebea93826e069365 ]---

me too

comment:4 Changed 2 years ago by webtron

I had another one today too on a Unifi but this one was related to /sbin/netifd and when I ran the "ps" command netifd was running twice. I also noted the routing table was empty and commands like ifconfig just hung. I tried killing netifd which failed silently and I tried /etc/init.d/network restart which seemed to reload without errors but still 2 netifd running in ps and still no routing table until I rebooted.

Sun Nov  1 04:09:36 2015 kern.alert kernel: [1346029.295502] CPU 0 Unable to handle kernel paging request at virtual address 00000004, epc == 802b1b18, ra == 802b2bec
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.306451] Oops[#29]:
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.309016] CPU: 0 PID: 730 Comm: netifd Tainted: G      D         4.1.2 #2
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.316177] task: 8398ca10 ti: 8330c000 task.ti: 8330c000
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.321769] $ 0   : 00000000 00be4094 00000000 00000015
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.327221] $ 4   : 83b340a0 833b5b94 00000020 00000001
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.332674] $ 8   : 00000015 00000000 00000000 00080004
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.338127] $12   : 02202000 00000000 00000000 0004ff00
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.343581] $16   : 833ae620 8330dc30 00000000 833aea54
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.349034] $20   : 833b5b94 83b34080 0a1e0101 00000000
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.354488] $24   : 00000000 8009f15c
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.359941] $28   : 8330c000 8330db70 00000000 802b2bec
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.365395] Hi    : 004e0079
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.368466] Lo    : 2ac20978
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.371569] epc   : 802b1b18 resize+0x38/0x630
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.376222] ra    : 802b2bec fib_table_delete+0x254/0x2dc
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.381815] Status: 1000d403    KERNEL EXL IE
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.386217] Cause : 00800008
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.389287] BadVA : 00000004
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.392360] PrId  : 00019374 (MIPS 24Kc)
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.396469] Modules linked in: ath9k ath9k_common iptable_nat ebtable_nat ebtable_filter ebtable_broute ath9k_hw ath nf_nat_ipv4 nf_conntrack_ipv4 mac80211 iptable_mangle iptable_filter ipt_REJECT ipt_MASQUERADE ip_tables ebtables ebt_vlan ebt_stp ebt_redirect ebt_pkttype ebt_mark_m ebt_mark ebt_limit ebt_among ebt_802_3 cfg80211 xt_time xt_tcpudp xt_nat xt_multiport xt_mark xt_mac xt_limit xt_id xt_comment xt_TCPMSS xt_REDIRECT xt_LOG x_tables nf_reject_ipv4Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.457641] Process netifd (pid: 730, threadinfo=8330c000, task=8398ca10, tls=77faf644)
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.465840] Stack : 00000000 833d8cc0 00000000 00000000 000000d0 00000000 00000010 00000004
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.465840]       00000000 80268b04 00000000 00000010 833ae620 8330dc30 00000000 833aea54
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.465840]       833b5b94 83b34080 0a1e0101 00000000 00000000 802b2bec 83b340a0 801b8bd0
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.465840]       838ee870 8009ef90 00000000 000000d0 00000000 8289361c 82893600 83b340a0
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.465840]       00000001 833b5a14 82893600 838fe06c 803ec1f0 8315c300 00000001 00000000
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.465840]       ...
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.501927] Call Trace:
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.504575] [<802b1b18>] resize+0x38/0x630
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.508878] [<802b2bec>] fib_table_delete+0x254/0x2dc
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.514137] [<802ad888>] inet_rtm_delroute+0x34/0x4c
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.519300] [<80255ef8>] rtnetlink_rcv_msg+0x1cc/0x1fc
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.524652] [<802690fc>] netlink_rcv_skb+0x78/0xf0
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.529659] [<80253ad4>] rtnetlink_rcv+0x24/0x34
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.534479] [<802689b0>] netlink_unicast+0x150/0x234
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.539645] [<80268ef8>] netlink_sendmsg+0x394/0x3d0
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.544810] [<8022b03c>] sock_sendmsg+0x18/0x30
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.549542] [<8022c574>] ___sys_sendmsg+0x174/0x210
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.554622] [<8022d4c4>] __sys_sendmsg+0x48/0x7c
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.559447] [<80062b3c>] handle_sys+0x11c/0x140
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.564171]
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.565843]
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.565843] Code: 8ca2fffc  afa40058  24060020 <90440004> 00a08021  8ca30000  10860004  8c450000  00a31826
Sun Nov  1 04:09:36 2015 kern.warn kernel: [1346029.577287] ---[ end trace 0afb02db1421b5e1 ]---
Sun Nov  1 04:09:40 2015 kern.alert kernel: [1346033.906060] CPU 0 Unable to handle kernel paging request at virtual address 00000004, epc == 802b1078, ra == 802b1134
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346033.917023] Oops[#30]:
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346033.919588] CPU: 0 PID: 31007 Comm: route Tainted: G      D         4.1.2 #2
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346033.926835] task: 8398ca10 ti: 828a6000 task.ti: 828a6000
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346033.932427] $ 0   : 00000000 00000001 00000000 833b5b94
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346033.937880] $ 4   : 83b03084 00000020 00000000 00000000
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346033.943333] $ 8   : 0a415000 00000023 00000001 20202020
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346033.948786] $12   : 20202020 77677320 00000000 20202020
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346033.954240] $16   : 83b03080 00000180 00000080 82b0b000
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346033.959693] $20   : 83b03db0 833ae134 828a7f08 775c9688
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346033.965146] $24   : 00000000 77631830
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346033.970600] $28   : 828a6000 828a7da8 00000380 802b1134
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346033.976054] Hi    : 00000003
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346033.979124] Lo    : 199999a6
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346033.982230] epc   : 802b1078 leaf_walk_rcu+0x9c/0x10c
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346033.987489] ra    : 802b1134 fib_route_seq_next+0x4c/0xa4
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346033.993074] Status: 1000d403    KERNEL EXL IE
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346033.997476] Cause : 00800008
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.000545] BadVA : 00000004
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.003609] PrId  : 00019374 (MIPS 24Kc)
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.007719] Modules linked in: ath9k ath9k_common iptable_nat ebtable_nat ebtable_filter ebtable_broute ath9k_hw ath nf_nat_ipv4 nf_conntrack_ipv4 mac80211 iptable_mangle iptable_filter ipt_REJECT ipt_MASQUERADE ip_tables ebtables ebt_vlan ebt_stp ebt_redirect ebt_pkttype ebt_mark_m ebt_mark ebt_limit ebt_among ebt_802_3 cfg80211 xt_time xt_tcpudp xt_nat xt_multiport xt_mark xt_mac xt_limit xt_id xt_comment xt_TCPMSS xt_REDIRECT xt_LOG x_tables nf_reject_ipv4Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.068891] Process route (pid: 31007, threadinfo=828a6000, task=8398ca10, tls=77677644)
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.077177] Stack : 00000080 82b0b000 83b03db0 833ae134 83b03d80 8011f1e0 00000000 0043aed3
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.077177]       833ea780 800a1464 00000000 00000003 00000000 00000004 838b5580 fffffffb
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.077177]       00000000 828a7f08 828a7e44 00000400 801411e4 00000000 00000000 80141250
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.077177]       835337e0 828a7e78 833ea788 82b0b000 82b0b000 00000000 82b0b000 801002c4
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.077177]       803706e0 00000001 833ea788 00000001 828a7e40 828a7e44 00000000 00000000
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.077177]       ...
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.113264] Call Trace:
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.115905] [<802b1078>] leaf_walk_rcu+0x9c/0x10c
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.120816] [<802b1134>] fib_route_seq_next+0x4c/0xa4
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.126080] [<8011f1e0>] seq_read+0x2cc/0x490
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.130641] [<80141250>] proc_reg_read+0x6c/0x90
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.135473] [<801002c4>] do_readv_writev+0x18c/0x288
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.140643] [<80100400>] vfs_readv+0x40/0x5c
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.145114] [<80100cc4>] SyS_readv+0x58/0xc4
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.149588] [<80062b3c>] handle_sys+0x11c/0x140
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.154313]
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.155984]
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.155984] Code: 24c20002  8c62fffc  8c660000 <90430004> 1065000b  8c470000  00e63026  00663006  24c60001
Sun Nov  1 04:09:40 2015 kern.warn kernel: [1346034.167724] ---[ end trace 0afb02db1421b5e2 ]---

comment:5 Changed 2 years ago by nbd

please try current trunk

comment:6 Changed 2 years ago by anonymous

[ 1197.210000] CPU 0 Unable to handle kernel paging request at virtual address 00000004, epc == 800915dc, ra == 800915d4

[ 1197.210000] Oops#1:
[ 1197.210000] CPU: 0 PID: 65 Comm: kworker/0:1 Not tainted 3.18.23 #1
[ 1197.210000] task: 838d0000 ti: 838d4000 task.ti: 838d4000
[ 1197.210000] $ 0 : 00000000 00000000 00000000 ffffff00
[ 1197.210000] $ 4 : 833f07e0 833f07e0 81082300 00000001
[ 1197.210000] $ 8 : 00000001 0000f400 00000000 83816840
[ 1197.210000] $12 : 00000117 773aa3a0 00419daf 7743b3d0
[ 1197.210000] $16 : 838b9900 833f07e0 80358df0 00000000
[ 1197.210000] $20 : 00000001 80360000 80358e00 80358df0
[ 1197.210000] $24 : 7742c000 8009c74c
[ 1197.210000] $28 : 838d4000 838d5e60 00000008 800915d4
[ 1197.210000] Hi : 00000009
[ 1197.210000] Lo : 00000002
[ 1197.210000] epc : 800915dc process_one_work+0x40/0x338
[ 1197.210000] Not tainted
[ 1197.210000] ra : 800915d4 process_one_work+0x38/0x338
[ 1197.210000] Status: 1100f402 KERNEL EXL
[ 1197.210000] Cause : 00800008
[ 1197.210000] BadVA : 00000004
[ 1197.210000] PrId : 0001974c (MIPS 74Kc)
[ 1197.210000] Modules linked in: ipt_WEBSEC netlink airqos pppoe ppp_async iptable_nat pppox ppp_generic nf_nat_ipv4 nf_conntrack_ipv4 ipt_REJECT ipt_MASQUERADE xt_time xt_tcpudp xt_tcpmss xt_statistic xt_state xt_recent xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_id xt_hl xt_helper xt_ecn xt_dscp xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS xt_REDIRECT xt_LOG xt_HL xt_DSCP xt_CT xt_CLASSIFY slhc nf_reject_ipv4 nf_nat_masquerade_ipv4 nf_nat_ftp nf_nat nf_log_ipv4 nf_log_common nf_defrag_ipv4 nf_conntrack_netlink nf_conntrack_ftp nf_conntrack iptable_raw iptable_mangle iptable_filter ipt_ECN ip_tables crc_ccitt compat_xtables arptable_filter arpt_mangle arp_tables act_skbedit em_u32 cls_u32 cls_tcindex cls_flow cls_route cls_fw sch_hfsc sch_ingress xt_set x_tables ip_set_list_set ip_set_hash_netiface ip_set_hash_netport ip_set_hash_netnet ip_set_hash_net ip_set_hash_netportnet ip_set_hash_mac ip_set_hash_ipportnet 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 ath9k mac80211 ath9k_common ath9k_hw ath cfg80211 compat arc4 crypto_blkcipher usb_storage ehci_platform ehci_hcd sd_mod scsi_mod gpio_button_hotplug usbcore nls_base usb_common [last unloaded: netlink]
[ 1197.210000] Process kworker/0:1 (pid: 65, threadinfo=838d4000, task=838d0000, tls=00000000)
[ 1197.210000] Stack : 803591f0 80066630 00000000 8006d7c8 1100f403 00000009 838b9900 838b9900

80358df0 838b9918 80304fec 00000001 80360000 80358e00 80358df0 800922ec
5ec7f8cd d86cdc4e 3e0b3e13 0e0b3f1b 838b9980 838b9900 803a0000 80300000
8009203c 80360000 803591f0 80363a78 00000000 800959e8 0a177e65 2f4b0f96
da871c8e 9a8e5d48 00000000 4f274f07 838b9900 00000000 838d5ef8 838d5ef8
...

[ 1197.210000] Call Trace:
[ 1197.210000] [<800915dc>] process_one_work+0x40/0x338
[ 1197.210000] [<800922ec>] worker_thread+0x2b0/0x40c
[ 1197.210000] [<800959e8>] kthread+0xd8/0xe4
[ 1197.210000] [<80060878>] ret_from_kernel_thread+0x14/0x1c
[ 1197.210000]
[ 1197.210000]
Code: 00a08821 00409821 8e120024 <8c420004> 8c550080 8e42000c 30420004 1440000d 7eb50140
[ 1197.510000] ---[ end trace 801b443fa82eb0e1 ]---
[ 1197.530000] eth0: link down
[ 1197.890000] CPU 0 Unable to handle kernel paging request at virtual address fffffff0, epc == 80095d14, ra == 800924e4
[ 1197.890000] Oops#2:
[ 1197.890000] CPU: 0 PID: 65 Comm: kworker/0:1 Tainted: G D 3.18.23 #1
[ 1197.890000] task: 838d0000 ti: 838d4000 task.ti: 838d4000
[ 1197.890000] $ 0 : 00000000 00000000 00000000 ed7464bf
[ 1197.890000] $ 4 : 838d0000 00000000 803591f0 ed7464bf
[ 1197.890000] $ 8 : 0000001e 00000000 00000000 00000013
[ 1197.890000] $12 : 0000000e 00000007 00000001 80329d68
[ 1197.890000] $16 : 00000000 00000001 803591f0 83828000
[ 1197.890000] $20 : 838d01fc 80360000 803591f0 00000000
[ 1197.890000] $24 : 0000000e 8009c74c
[ 1197.890000] $28 : 838d4000 838d5c18 00000010 800924e4
[ 1197.890000] Hi : 00000116
[ 1197.890000] Lo : e7ced480
[ 1197.890000] epc : 80095d14 kthread_data+0x4/0xc
[ 1197.890000] Tainted: G D
[ 1197.890000] ra : 800924e4 wq_worker_sleeping+0x14/0xc0
[ 1197.890000] Status: 1100f402 KERNEL EXL
[ 1197.890000] Cause : 80800008
[ 1197.890000] BadVA : fffffff0
[ 1197.890000] PrId : 0001974c (MIPS 74Kc)
[ 1197.890000] Modules linked in: ipt_WEBSEC netlink airqos pppoe ppp_async iptable_nat pppox ppp_generic nf_nat_ipv4 nf_conntrack_ipv4 ipt_REJECT ipt_MASQUERADE xt_time xt_tcpudp xt_tcpmss xt_statistic xt_state xt_recent xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_id xt_hl xt_helper xt_ecn xt_dscp xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS xt_REDIRECT xt_LOG xt_HL xt_DSCP xt_CT xt_CLASSIFY slhc nf_reject_ipv4 nf_nat_masquerade_ipv4 nf_nat_ftp nf_nat nf_log_ipv4 nf_log_common nf_defrag_ipv4 nf_conntrack_netlink nf_conntrack_ftp nf_conntrack iptable_raw iptable_mangle iptable_filter ipt_ECN ip_tables crc_ccitt compat_xtables arptable_filter arpt_mangle arp_tables act_skbedit em_u32 cls_u32 cls_tcindex cls_flow cls_route cls_fw sch_hfsc sch_ingress xt_set x_tables ip_set_list_set ip_set_hash_netiface ip_set_hash_netport ip_set_hash_netnet ip_set_hash_net ip_set_hash_netportnet ip_set_hash_mac ip_set_hash_ipportnet 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 ath9k mac80211 ath9k_common ath9k_hw ath cfg80211 compat arc4 crypto_blkcipher usb_storage ehci_platform ehci_hcd sd_mod scsi_mod gpio_button_hotplug usbcore nls_base usb_common [last unloaded: netlink]
[ 1197.890000] Process kworker/0:1 (pid: 65, threadinfo=838d4000, task=838d0000, tls=00000000)
[ 1197.890000] Stack : 00000001 803591f0 83828000 838d01fc 838d0000 80066278 803c0000 00000000

838d5c38 838d5c38 838d0000 00000001 838cfff8 83828000 838d0178 00000001
838cfff8 00000000 00000010 8008117c 803c6978 00000002 803614f0 803c0000
838d5c78 838d5c78 838d01c0 801d6d0c 838d5c78 838d5ca4 838d5da8 803029c8
0000000b 00000028 00000001 80360000 00000000 00000000 00030000 80070b40
...

[ 1197.890000] Call Trace:
[ 1197.890000] [<80095d14>] kthread_data+0x4/0xc
[ 1197.890000] [<800924e4>] wq_worker_sleeping+0x14/0xc0
[ 1197.890000] [<80066278>] schedule+0x108/0x5b4
[ 1197.890000] [<8008117c>] do_exit+0x74c/0x764
[ 1197.890000] [<80070b40>] default_cu2_call+0x0/0x44
[ 1197.890000]
[ 1197.890000]
Code: 03e00008 7c420080 8c8201d0 <03e00008> 8c42fff0 27bdffe0 afbf001c 8c8501d0 24060004
[ 1198.190000] ---[ end trace 801b443fa82eb0e2 ]---
[ 1198.200000] Fixing recursive fault but reboot is needed!

comment:7 follow-up: Changed 2 years ago by nbd

  • Resolution set to no_response
  • Status changed from new to closed

That last kernel log is definitely something different (and on a different device too) and has nothing to do with the original report. Also, it has some weird kernel modules that I don't know and that might be causing this issue (e.g. ipt_WEBSEC, airqos). Not sure where you got those from...

comment:8 in reply to: ↑ 7 Changed 2 years ago by anonymous

It is similar to comment 3, no any other ticket found, so I reported here. The kernel crached When executed the function "process_one_work()" , it maybe caused by the generic patch 081-pppoe-Use-workqueue-to-die-properly-when-a-PADT-is-r.patch. In function pppoe_connect(), a workqueue was initialzed, a NULL pointer would appear if the pppoe session was missing. Removed the patch, it seems to be ok.

comment:9 Changed 2 years ago by webtron

  • Resolution no_response deleted
  • Status changed from closed to reopened

Sorry for the lack of response but I'm still testing this with r47890. Looks ok so far but I only have it at limited installs and it's a random bug that seems to appear on busy sites when the AP loses connectivity to the internet.

comment:10 Changed 2 years ago by webtron

I haven't sen this bug on r47890 so it looks like it's been fixed.

comment:11 Changed 2 years ago by nbd

  • Resolution set to fixed
  • Status changed from reopened to closed

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