[FS#126] kernel panic on brcm47xx (netgear wgt634u) when routing at a high speed
LEDE Bugs
lede-bugs at lists.infradead.org
Tue Aug 30 02:05:57 PDT 2016
A new Flyspray task has been opened. Details are below.
User who did this - Russell Senior (russell)
Attached to Project - LEDE Project
Summary - kernel panic on brcm47xx (netgear wgt634u) when routing at a high speed
Task Type - Bug Report
Category - Kernel
Status - Unconfirmed
Assigned To -
Operating System - All
Severity - Medium
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - With LEDE version reboot-1444-g1bb914d, when pulling data through the WAN interface to the LAN interface at a sufficiently high speed, e.g. on a Raspberry Pi connected by ethernet to a LAN port, and the WAN interface connected to a gigabit internet service and issuing a command like:
curl https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.7.2.tar.xz > /dev/null
>From the pi, I see something like:
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
9 86.2M 9 7977k 0 0 1834k 0 0:00:48 0:00:04 0:00:44 1835k[ 352.295252] smsc95xx 1-1.1:1.0 eth0: link down
9 86.2M 9 7977k 0 0 1255k 0 0:01:10 0:00:06 0:01:04 1155k[ 353.959380] smsc95xx 1-1.1:1.0 eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
9 86.2M 9 7977k 0 0 43292 0 0:34:48 0:03:08 0:31:40 0
or
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
8 86.2M 8 7440k 0 0 1478k 0 0:00:59 0:00:05 0:00:54 1478k[ 1100.164849] smsc95xx 1-1.1:1.0 eth0: link down
8 86.2M 8 7440k 0 0 1232k 0 0:01:11 0:00:06 0:01:05 1300k[ 1101.836954] smsc95xx 1-1.1:1.0 eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
8 86.2M 8 7440k 0 0 740k 0 0:01:59 0:00:10 0:01:49 0
Where the "link down" is the WGT634U panic'ing and rebooting. The panic on the WGT634U looks like this:
[ 171.966841] CPU 0 Unable to handle kernel paging request at virtual address 008224d8, epc == 80077ecc, ra == 801d8100
[ 171.977700] Oops[#1]:
[ 171.980093] CPU: 0 PID: 3 Comm: ksoftirqd/0 Not tainted 4.1.20 #0
[ 171.986265] task: 8181e008 ti: 8182a000 task.ti: 8182a000
[ 171.991711] $ 0 : 00000000 1000b800 008224d8 b41c479b
[ 171.997140] $ 4 : 008224d8 00010000 80361ef8 00000000
[ 172.002557] $ 8 : 81018b14 8101da14 00100100 dceb27b8
[ 172.007983] $12 : ffffffff 00000001 ffffff80 000042c6
[ 172.013400] $16 : b41c479b 00000001 81b450a8 81b7d260
[ 172.018817] $20 : 803b5dcc 00000002 00000008 0000000a
[ 172.024235] $24 : 00000000 80072b24
[ 172.029653] $28 : 8182a000 8182bdb8 00000100 801d8100
[ 172.035083] Hi : 00000000
[ 172.038026] Lo : 0000006c
[ 172.041036] epc : 80077ecc put_compound_page+0x78/0x240
[ 172.046547] ra : 801d8100 skb_release_data+0xa8/0x10c
[ 172.051920] Status: 1000b803 KERNEL EXL IE
[ 172.056254] Cause : 00800008
[ 172.059194] BadVA : 008224d8
[ 172.062144] PrId : 00029007 (Broadcom BMIPS3300)
[ 172.066891] Modules linked in: pppoe ppp_async iptable_nat ath5k ath pppox ppp_generic nf_nat_ipv4 nf_conntrack_ipv6 nf_conntrack_ipv4 mac80211 ipt_REJECT ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark xt_mac xt_limit xt_id xt_conntrack xt_comment xt_TCPMSS xt_REDIRECT xt_LOG xt_CT slhc nf_reject_ipv4 nf_nat_redirect nf_nat_masquerade_ipv4 nf_nat nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache nf_conntrack iptable_raw iptable_mangle iptable_filter ip_tables crc_ccitt compat ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_common ip6table_raw ip6table_mangle ip6table_filter ip6_tables x_tables leds_gpio ehci_platform ehci_hcd gpio_button_hotplug usbcore nls_base usb_common ssb_hcd
[ 172.132913] Process ksoftirqd/0 (pid: 3, threadinfo=8182a000, task=8181e008, tls=00000000)
[ 172.141213] Stack : 1000b803 00000000 0000006c b41c479b 81b45080 801d8100 00000000 0000012c
00000001 801e7d60 81becb60 81b7d260 81b7d260 80335b3c 81bece60 801d818c
80360000 803623e0 81becb60 80335b3c 803623e0 801e63d8 8182be10 8182be10
00000001 00000002 803b5dd0 00000001 803b5dd4 00000003 803b0000 80024fec
81841048 80361100 819bb770 80007664 80364510 8181e008 80362898 04208040
...
[ 172.178058] Call Trace:
[ 172.180640] [] put_compound_page+0x78/0x240
[ 172.185822] [] skb_release_data+0xa8/0x10c
[ 172.190895] [] __kfree_skb+0x28/0xb4
[ 172.195466] [] net_tx_action+0xd8/0x140
[ 172.200329] [] __do_softirq+0x184/0x2b0
[ 172.205184] [] run_ksoftirqd+0x28/0x80
[ 172.209953] [] smpboot_thread_fn+0x148/0x178
[ 172.215246] [] kthread+0xdc/0xe8
[ 172.219459] [] ret_from_kernel_thread+0x14/0x1c
[ 172.224921]
[ 172.226470]
Code: 30840001 0204100a 00402021 000211c2 30420001 10400018 00000000 8e020000
[ 172.237022] ---[ end trace 89a3318b662df6d8 ]---
[ 172.250536] Kernel panic - not syncing: Fatal exception in interrupt
[ 172.262338] Rebooting in 3 seconds..
or
[ 1317.958261] Unhandled kernel unaligned access[#1]:
[ 1317.963173] CPU: 0 PID: 3 Comm: ksoftirqd/0 Not tainted 4.1.20 #0
[ 1317.969349] task: 8181e008 ti: 8182a000 task.ti: 8182a000
[ 1317.974795] $ 0 : 00000000 1000b801 00000001 00200000
[ 1317.980232] $ 4 : 647b394a 00010000 00018da4 00000000
[ 1317.985658] $ 8 : 8181e040 b1e1b104 00000017 40000000
[ 1317.991085] $12 : 500018dd 00000000 00000000 010102f2
[ 1317.996510] $16 : 80e4d1e0 00000001 80e4d208 81acb0e0
[ 1318.001936] $20 : 803b5dcc 00000002 00000008 0000000a
[ 1318.007362] $24 : 00000010 8001ead0
[ 1318.012789] $28 : 8182a000 8182bdd0 00000100 801d8100
[ 1318.018220] Hi : 00000001
[ 1318.021160] Lo : 00000001
[ 1318.024169] epc : 80078474 put_page+0x0/0x4c
[ 1318.028732] ra : 801d8100 skb_release_data+0xa8/0x10c
[ 1318.034104] Status: 1000b803 KERNEL EXL IE
[ 1318.038439] Cause : 00800010
[ 1318.041380] BadVA : 647b394a
[ 1318.044330] PrId : 00029007 (Broadcom BMIPS3300)
[ 1318.049076] Modules linked in: pppoe ppp_async iptable_nat ath5k ath pppox ppp_generic nf_nat_ipv4 nf_conntrack_ipv6 nf_conntrack_ipv4 mac80211 ipt_REJECT ipt_MASQUERADE cfg80211 xt_time xt_tcpudp xt_state xt_nat xt_multiport xt_mark xt_mac xt_limit xt_id xt_conntrack xt_comment xt_TCPMSS xt_REDIRECT xt_LOG xt_CT slhc nf_reject_ipv4 nf_nat_redirect nf_nat_masquerade_ipv4 nf_nat nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache nf_conntrack iptable_raw iptable_mangle iptable_filter ip_tables crc_ccitt compat ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_common ip6table_raw ip6table_mangle ip6table_filter ip6_tables x_tables leds_gpio ehci_platform ehci_hcd gpio_button_hotplug usbcore nls_base usb_common ssb_hcd
[ 1318.115124] Process ksoftirqd/0 (pid: 3, threadinfo=8182a000, task=8181e008, tls=00000000)
[ 1318.123424] Stack : 00000000 80c60c94 00db35c0 626a006e ff330000 81acb0e0 81acb0e0 80335b3c
80c28260 801d818c 80360000 8004f368 00000018 0000000a 803623e0 801e63d8
8182be10 8182be10 80361100 00000002 803b5dd0 00000001 803b5dd4 00000013
803b0000 80024fec 80364510 80361100 80360000 8000736c 80364510 8181e008
80362898 04208040 00018da4 80360000 80310000 803b5dcc 803615a0 803114f4
...
[ 1318.160295] Call Trace:
[ 1318.162885] [] put_page+0x0/0x4c
[ 1318.167108] [] skb_release_data+0xa8/0x10c
[ 1318.172182] [] __kfree_skb+0x28/0xb4
[ 1318.176752] [] net_tx_action+0xd8/0x140
[ 1318.181614] [] __do_softirq+0x184/0x2b0
[ 1318.186471] [] run_ksoftirqd+0x28/0x80
[ 1318.191238] [] smpboot_thread_fn+0x148/0x178
[ 1318.196530] [] kthread+0xdc/0xe8
[ 1318.200744] [] ret_from_kernel_thread+0x14/0x1c
[ 1318.206200]
[ 1318.207747]
Code: 00003021 0801e0ce 24a57888 3042c000 10400003 00801821 0801df95 00000000
[ 1318.218397] ---[ end trace 2502a626803fb4b9 ]---
[ 1318.231740] Kernel panic - not syncing: Fatal exception in interrupt
[ 1318.243362] Rebooting in 3 seconds..
This looks similar to: https://dev.openwrt.org/ticket/11091
More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=126
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