Connman crashes when loosing network
Hi All,
I experience reproducible connman crashes with version v1.20, v1.21, v1.22,
v1.23 and HEAD of git. Older version I did not try.
The situation is as follow:
I have a controller (AM3547 from TI, ARM Cortex-A8) attached to a Wifi extender
by wire. The Wifi extender is connected to a Wifi access point which is connect
to our network. If the connection are up and running everything works well.
When I however turn off the Wifi access point connman crashes with a
segmentation fault (see log below). I have seen more connman crashes when
networks are coming and going but there were not so nicely reproducible as this
one.
For cross compiling I use Yocto-Poky (OpenEmbedded).
If you need more information, e.g. Wireshark logs or other kind of information
I am happy to provide this.
Connman was started with: connmand -d -n --nobacktrace -r
But also with dnsproxy connman crashes. When I restart connman in this
situation it ends in a seg fault again. When the connection to the Wifi access
point is restored connman starts without problems.
Hope someone can help me because this is a serious problem for us.
Best regards,
Marcel
05/01/14 09:56:37 AM connmand[26030]:
src/ipconfig.c:__connman_ipconfig_append_ipv4()
05/01/14 09:56:37 AM connmand[26030]:
src/ipconfig.c:__connman_ipconfig_append_ipv4config()
05/01/14 09:56:37 AM connmand[26030]:
src/ipconfig.c:__connman_ipconfig_append_ipv6config()
05/01/14 09:56:37 AM connmand[26030]:
src/service.c:append_nameservers() servers[0] 192.168.4.13 available 1
05/01/14 09:56:37 AM connmand[26030]:
src/service.c:append_nameservers() servers[1] 192.168.1.26 available 1
05/01/14 09:56:37 AM connmand[26030]: src/storage.c:storage_load()
Loading /var/lib/connman/settings
05/01/14 09:56:45 AM connmand[26030]: src/rtnl.c:rtnl_message() buf
0xbea8ab18 len 576
05/01/14 09:56:45 AM connmand[26030]: src/rtnl.c:rtnl_message()
NEWLINK len 576 type 16 flags 0x seq 0 pid 0
05/01/14 09:56:45 AM connmand[26030]:
src/ipconfig.c:__connman_ipconfig_newlink() index 3
05/01/14 09:56:45 AM connmand[26030]: eth0 {RX} 38268 packets 4322051
bytes
05/01/14 09:56:45 AM connmand[26030]: eth0 {TX} 31213 packets 3869059
bytes
05/01/14 09:56:45 AM connmand[26030]: src/service.c:stats_update()
service 0xad800
05/01/14 09:56:45 AM connmand[26030]: eth0 {update} flags 36867 UP
05/01/14 09:56:45 AM connmand[26030]:
src/service.c:service_lower_down() eth0 lower down
05/01/14 09:56:45 AM connmand[26030]:
src/ipconfig.c:__connman_ipconfig_disable() ipconfig 0xac3e0
05/01/14 09:56:45 AM connmand[26030]:
src/ipconfig.c:__connman_ipconfig_unref_debug() 0xac3e0 ref 1 by
src/ipconfig.c:1694:__connman_ipconfig_disable()
05/01/14 09:56:45 AM connmand[26030]: src/service.c:stats_stop()
service 0xad800
05/01/14 09:56:45 AM connmand[26030]: src/service.c:service_save()
service 0xad800 new 0
05/01/14 09:56:45 AM connmand[26030]: src/storage.c:storage_load()
Loading /var/lib/connman/ethernet_5056631d05ad_cable/settings
05/01/14 09:56:45 AM connmand[26030]:
src/ipconfig.c:__connman_ipconfig_save() ipconfig 0xac3e0 identifier
ethernet_5056631d05ad_cable method dhcp
05/01/14 09:56:45 AM connmand[26030]:
src/ipconfig.c:__connman_ipconfig_save() ipconfig 0xa9fd8 identifier
ethernet_5056631d05ad_cable method off
05/01/14 09:56:45 AM connmand[26030]:
src/ipconfig.c:__connman_ipconfig_lower_down() ipconfig ipv4 (nil) ipv6 0xa9fd8
05/01/14 09:56:45 AM connmand[26030]:
src/inet.c:connman_inet_clear_ipv6_address() index 3 address (null) prefix_len 0
05/01/14 09:56:45 AM connmand[26030]: eth0 {newlink} index 3 address
50:56:63:1D:05:AD mtu 1500
05/01/14 09:56:45 AM connmand[26030]: eth0 {newlink} index 3
operstate 2 DOWN
05/01/14 09:56:45 AM connmand[26030]: src/detect.c:detect_newlink()
type 1 index 3
05/01/14 09:56:45 AM connmand[26030]:
plugins/ethernet.c:ethernet_newlink() index 3 flags 36867 change 0
05/01/14 09:56:45 AM connmand[26030]:
plugins/ethernet.c:ethernet_newlink() carrier off
05/01/14 09:56:45 AM connmand[26030]:
src/device.c:connman_device_remove_network() device 0xacf88 network 0xaaf10
05/01/14 09:56:45 AM connmand[26030]: src/device.c:free_network()
network 0xaaf10
05/01/14 09:56:45 AM connmand[26030]: src/network.c:network_remove()
network 0xaaf10 name Wired
05/01/14 09:56:45 AM connmand[26030]:
src/network.c:set_disconnected() service 0xad800 ipv4 0xac3e0 ipv6 0xa9fd8
05/01/14 09:56:45 AM connmand[26030]:
src/network.c:set_disconnected() method ipv4 4 ipv6 1
05/01/14 09:56:45 AM connmand[26030]:
src/dhcp.c:__connman_dhcp_stop() network_table 0xa5528 network
Re: Connman crashes when loosing network
Could you please try with HEAD version and pastebin the logs? Saw a
refcount issue in:
05/01/14 09:56:55 AM connmand[26030]:
src/ipconfig.c:__connman_ipconfig_unref_debug() 0xa9fd8 ref -1 by
src/ipconfig.c:1707:__connman_ipconfig_disable()
But I don't know which version your are actually running.
On Thu, May 1, 2014 at 4:05 AM, Marcel Mulder mmul...@victronenergy.comwrote:
Hi All,
I experience reproducible connman crashes with version v1.20, v1.21,
v1.22, v1.23 and HEAD of git. Older version I did not try.
The situation is as follow:
I have a controller (AM3547 from TI, ARM Cortex-A8) attached to a Wifi
extender by wire. The Wifi extender is connected to a Wifi access point
which is connect to our network. If the connection are up and running
everything works well. When I however turn off the Wifi access point
connman crashes with a segmentation fault (see log below). I have seen more
connman crashes when networks are coming and going but there were not so
nicely reproducible as this one.
For cross compiling I use Yocto-Poky (OpenEmbedded).
If you need more information, e.g. Wireshark logs or other kind of
information I am happy to provide this.
Connman was started with: connmand -d -n --nobacktrace -r
But also with dnsproxy connman crashes. When I restart connman in this
situation it ends in a seg fault again. When the connection to the Wifi
access point is restored connman starts without problems.
Hope someone can help me because this is a serious problem for us.
Best regards,
Marcel
05/01/14 09:56:37 AM connmand[26030]:
src/ipconfig.c:__connman_ipconfig_append_ipv4()
05/01/14 09:56:37 AM connmand[26030]:
src/ipconfig.c:__connman_ipconfig_append_ipv4config()
05/01/14 09:56:37 AM connmand[26030]:
src/ipconfig.c:__connman_ipconfig_append_ipv6config()
05/01/14 09:56:37 AM connmand[26030]:
src/service.c:append_nameservers() servers[0] 192.168.4.13 available 1
05/01/14 09:56:37 AM connmand[26030]:
src/service.c:append_nameservers() servers[1] 192.168.1.26 available 1
05/01/14 09:56:37 AM connmand[26030]:
src/storage.c:storage_load() Loading /var/lib/connman/settings
05/01/14 09:56:45 AM connmand[26030]: src/rtnl.c:rtnl_message()
buf 0xbea8ab18 len 576
05/01/14 09:56:45 AM connmand[26030]: src/rtnl.c:rtnl_message()
NEWLINK len 576 type 16 flags 0x seq 0 pid 0
05/01/14 09:56:45 AM connmand[26030]:
src/ipconfig.c:__connman_ipconfig_newlink() index 3
05/01/14 09:56:45 AM connmand[26030]: eth0 {RX} 38268 packets
4322051 bytes
05/01/14 09:56:45 AM connmand[26030]: eth0 {TX} 31213 packets
3869059 bytes
05/01/14 09:56:45 AM connmand[26030]:
src/service.c:stats_update() service 0xad800
05/01/14 09:56:45 AM connmand[26030]: eth0 {update} flags 36867
UP
05/01/14 09:56:45 AM connmand[26030]:
src/service.c:service_lower_down() eth0 lower down
05/01/14 09:56:45 AM connmand[26030]:
src/ipconfig.c:__connman_ipconfig_disable() ipconfig 0xac3e0
05/01/14 09:56:45 AM connmand[26030]:
src/ipconfig.c:__connman_ipconfig_unref_debug() 0xac3e0 ref 1 by
src/ipconfig.c:1694:__connman_ipconfig_disable()
05/01/14 09:56:45 AM connmand[26030]: src/service.c:stats_stop()
service 0xad800
05/01/14 09:56:45 AM connmand[26030]:
src/service.c:service_save() service 0xad800 new 0
05/01/14 09:56:45 AM connmand[26030]:
src/storage.c:storage_load() Loading
/var/lib/connman/ethernet_5056631d05ad_cable/settings
05/01/14 09:56:45 AM connmand[26030]:
src/ipconfig.c:__connman_ipconfig_save() ipconfig 0xac3e0 identifier
ethernet_5056631d05ad_cable method dhcp
05/01/14 09:56:45 AM connmand[26030]:
src/ipconfig.c:__connman_ipconfig_save() ipconfig 0xa9fd8 identifier
ethernet_5056631d05ad_cable method off
05/01/14 09:56:45 AM connmand[26030]:
src/ipconfig.c:__connman_ipconfig_lower_down() ipconfig ipv4 (nil) ipv6
0xa9fd8
05/01/14 09:56:45 AM connmand[26030]:
src/inet.c:connman_inet_clear_ipv6_address() index 3 address (null)
prefix_len 0
05/01/14 09:56:45 AM connmand[26030]: eth0 {newlink} index 3
address 50:56:63:1D:05:AD mtu 1500
05/01/14 09:56:45 AM connmand[26030]: eth0 {newlink} index 3
operstate 2 DOWN
05/01/14 09:56:45 AM connmand[26030]:
src/detect.c:detect_newlink() type 1 index 3
05/01/14 09:56:45 AM connmand[26030]:
plugins/ethernet.c:ethernet_newlink() index 3 flags 36867 change 0
05/01/14 09:56:45 AM connmand[26030]:
plugins/ethernet.c:ethernet_newlink() carrier off
05/01/14 09:56:45 AM connmand[26030]:
src/device.c:connman_device_remove_network() device 0xacf88 network 0xaaf10
05/01/14 09:56:45 AM connmand[26030]:
src/device.c:free_network() network 0xaaf10
Re: Connman crashes when loosing network
On Thu, 2014-05-01 at 08:05 +, Marcel Mulder wrote: I experience reproducible connman crashes with version v1.20, v1.21, v1.22, v1.23 and HEAD of git. Older version I did not try. See if dd96d41ea182f0d1e0b55686adf793fa72e0e4d3 helps. At least it was an attempt to solve a very similar sounding problem. When debugging this, run 'CONNMAN_DHCP_DEBUG=1 connmand -n -d src/dhcp.c' so that all DHCP logs are available. Cheers, Patrik ___ connman mailing list connman@connman.net https://lists.connman.net/mailman/listinfo/connman
