#18248: Open vSwitch module could not be loaded
---------------------------------------+------------------------
Reporter: anonymous | Owner: developers
Type: defect | Status: new
Priority: normal | Milestone:
Component: packages | Version: Trunk
Keywords: open vswitch, openvswitch |
---------------------------------------+------------------------
I built the Open vSwitch package (including the kernel module). Although I
managed to make it run on a device (Netgear WNDR3700v2), I noticed that it
does not load the module by default. I manually tried to insert the
module, but it failed (Segmentation Fault on the console after "insmod
openvswitch").
Here is part of dmesg:
[ 489.290000] openvswitch: Open vSwitch switching datapath 2.1.2, built
Oct 28 2014 20:31:18
[ 489.300000] CPU 0 Unable to handle kernel paging request at virtual
address 65000100, epc == 82f1a698, ra == 82f1a668
[ 489.310000] Oops[#1]:
[ 489.310000] CPU: 0 PID: 1470 Comm: insmod Not tainted 3.10.49 #9
[ 489.310000] task: 82e90000 ti: 82eea000 task.ti: 82eea000
[ 489.310000] $ 0 : 00000000 00000000 65000000 ffff7fff
[ 489.310000] $ 4 : 82ee9e00 82f20000 83b4d000 80394b50
[ 489.310000] $ 8 : 00000000 80064910 82ed5400 82cf88c0
[ 489.310000] $12 : 00000014 00000001 00000000 00000001
[ 489.310000] $16 : 82ee9e00 00000006 80323cd8 00000000
[ 489.310000] $20 : 8032a4f4 80323d40 82f1e060 00000004
[ 489.310000] $24 : 00000000 800f9b44
[ 489.310000] $28 : 82eea000 82eebd40 00000124 82f1a668
[ 489.310000] Hi : 00000007
[ 489.310000] Lo : 00000000
[ 489.310000] epc : 82f1a698 ovs_netdev_detach_dev+0x48/0x90
[openvswitch]
[ 489.310000] Not tainted
[ 489.310000] ra : 82f1a668 ovs_netdev_detach_dev+0x18/0x90
[openvswitch]
[ 489.310000] Status: 1000fc03 KERNEL EXL IE
[ 489.310000] Cause : 00800008
[ 489.310000] BadVA : 65000100
[ 489.310000] PrId : 00019374 (MIPS 24Kc)
[ 489.310000] Modules linked in: openvswitch(+) ath9k ath9k_common pppoe
ppp_async iptable_nat ath9k_hw ath pppox ppp_generic nf_nat_ipv4
nf_conntrack_ipv6 nf_conntrack_ipv4 mac80211 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_nat_irc nf_nat_ftp nf_nat nf_defrag_ipv6 nf_defrag_ipv4
nf_conntrack_irc nf_conntrack_ftp nf_conntrack iptable_raw iptable_mangle
iptable_filter ipt_REJECT ip_tables crc_ccitt compat ledtrig_usbdev
ip6t_REJECT ip6table_raw ip6table_mangle ip6table_filter ip6_tables
x_tables ip_gre ip_tunnel tun libcrc32c gre ipv6 arc4 crypto_blkcipher
ohci_hcd ehci_platform ehci_hcd gpio_button_hotplug usbcore nls_base
usb_common crc32c crypto_hash
[ 489.310000] Process insmod (pid: 1470, threadinfo=82eea000,
task=82e90000, tls=77029440)
[ 489.310000] Stack : 82f1de68 00000004 82f1ddc8 82f1cd90 82f1e060
83b4d000 00000006 82f135a8
[ 489.310000] 00000000 80390000 ffff7fff 80202d14 00000000 82f1e020
83b4d000 80285bac
[ 489.310000] 82f1ddc8 8008f0bc 00000000 82f20000 80390000 ffffffef
00000000 00000000
[ 489.310000] 82f20000 82f20000 82f1cd90 82ee0198 8108217c 82f1d49c
82f1e060 ffffffff
[ 489.310000] 00000000 82ee0068 82eebee0 80390000 00000000 80330000
80330000 00000000
[ 489.310000] ...
[ 489.310000] Call Trace:
[ 489.310000] [<82f1a698>] ovs_netdev_detach_dev+0x48/0x90 [openvswitch]
[ 489.310000] [<82f135a8>] cleanup_module+0xc4/0x12c [openvswitch]
[ 489.310000]
[ 489.310000]
[ 489.310000] Code: 8e020098 3c03ffff 24637fff <8c440100> 00831824
ac430100 0c06dd1e 8e040098 8e110098
[ 489.550000] ---[ end trace e14ff4cb50a82de9 ]---
I should note that I am using Open vSwitch version 2.1.2, but it does not
seems to relate to that. I tried to run klogd and syslogd, but could not
get any further information out of those logs.
By looking at dmesg, it seems that the problem is with function
"ovs_netdev_detach_dev" in datapath/linux/vport-netdev.c. This function is
probably called from module clean up.
--
Ticket URL: <https://dev.openwrt.org/ticket/18248>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
_______________________________________________
openwrt-tickets mailing list
[email protected]
https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-tickets
