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,
Jia Cheng.
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