On Tue, Mar 12, 2019 at 08:34:39PM +0800, 贾乘 wrote:
> Hi All,
>
> This is my bridge configuration:
>
> Bridge br-int
> Controller "tcp:127.0.0.1:6653"
> is_connected: true
> fail_mode: secure
> Port br-int
> Interface br-int
> type: internal
> Port vxlan-vtp
> Interface vxlan-vtp
> type: vxlan
> options: {dst_port="4789", key=flow,
> local_ip="10.23.127.129", remote_ip=flow}
> Port br-ex-patch
> Interface br-ex-patch
> type: patch
> options: {peer=br-int-patch}
> I do something as the following steps:
> 1. Disconnect the controller
> 2. Change the vxlan port interface , the local_ip is set to be "flow”.
>
> The ovs-vswitchd is crashed, then I got the ovs-vswitchd core dump:
>
> #0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
> #1 0x00007f855f89542a in __GI_abort () at abort.c:89
> #2 0x000055e14c6f7fae in ofputil_protocol_to_ofp_version
> (protocol=<optimized out>) at lib/ofp-protocol.c:123
> #3 0x000055e14c6f32ce in ofputil_encode_port_status
> (ps=ps@entry=0x7ffdfceab670, protocol=<optimized out>) at lib/ofp-port.c:938
> #4 0x000055e14c662dcb in connmgr_send_port_status (mgr=0x55e14da54370,
> source=source@entry=0x0, pp=pp@entry=0x55e14db9af50, reason=reason@entry=2
> '\002')
> at ofproto/connmgr.c:1654
> #5 0x000055e14c62bf26 in update_port (ofproto=ofproto@entry=0x55e14db778e0,
> name=name@entry=0x55e14dbe01a0 "vxlan-vtp") at ofproto/ofproto.c:2652
> #6 0x000055e14c62c477 in ofproto_run (p=0x55e14db778e0) at
> ofproto/ofproto.c:1818
> #7 0x000055e14c61a8bc in bridge_run__ () at vswitchd/bridge.c:2944
> #8 0x000055e14c61bc71 in bridge_reconfigure
> (ovs_cfg=ovs_cfg@entry=0x55e14da5ab10) at vswitchd/bridge.c:721
> #9 0x000055e14c61fba9 in bridge_run () at vswitchd/bridge.c:3023
> #10 0x000055e14c2bdbdd in main (argc=<optimized out>, argv=<optimized out>)
> at vswitchd/ovs-vswitchd.c:125
>
>
> From the code , the function connmgr_send_port_status try to send the
> message of the port status update to every controller connection, but since I
> disconnect the controller , the rconn state is S_BACKOFF. So based on the
> function
> ofconn_get_protocol, the protocol will be OFPUTIL_P_NONE. When calling
> ofputil_encode_port_status with none protocol, the ovs-vswitchd is crashed.
>
> connmgr_send_port_status. —> ofconn_get_protocol (conn disconnected, it
> return none protocol)
> —> ofputil_encode_port_status.
> (With None protocol , ovs-vswitchd crash)
>
>
> So I suggest to check if the protocol is null before calling
> ofputil_encode_port_status.
Thanks for the report.
What version of OVS are you testing?
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