Unable to decode message length

[Valentin David]

Hello all,

I have been trying to get libvirtd to work but when I connect to it 
with virsh, I get "error : virNetMessageDecodeLength:131 : Unable to 
decode message length"

This happens with libvirt 6.1.0, libtirpc 1.2.6, rpcsvc-proto 1.4.1. I 
have tried with other versions, but I still get the same error.

If anybody has any tip on what to try next, that would be helpful. 
Thank you in advance.

Here is the debug log of libvirtd when I try to connect with virsh:

2020-07-14 16:29:58.220+0000: 5352: info : 
virEventGLibHandleDispatch:116 : EVENT_GLIB_DISPATCH_HANDLE: watch=2 
events=1 cb=0x7f7b55b86c50 opaque=0x556fbcf8b8a0
2020-07-14 16:29:58.220+0000: 5352: info : virObjectNew:250 : 
OBJECT_NEW: obj=0x556fbcf8d770 classname=virNetSocket
2020-07-14 16:29:58.220+0000: 5352: info : virNetSocketNew:278 : 
RPC_SOCKET_NEW: sock=0x556fbcf8d770 fd=18 errfd=-1 pid=0 
localAddr=127.0.0.1;0, remoteAddr=127.0.0.1;0
2020-07-14 16:29:58.220+0000: 5352: info : virObjectNew:250 : 
OBJECT_NEW: obj=0x556fbcf8da50 classname=virNetServerClient
2020-07-14 16:29:58.220+0000: 5352: info : virObjectRef:385 : 
OBJECT_REF: obj=0x556fbcf8d770
2020-07-14 16:29:58.220+0000: 5352: info : virEventGLibTimeoutAdd:341 : 
EVENT_GLIB_ADD_TIMEOUT: timer=1 interval=-1 cb=0x7f7b55b8d490 
opaque=0x556fbcf8da50 ff=(nil)
2020-07-14 16:29:58.220+0000: 5352: info : 
virNetServerClientNewInternal:421 : RPC_SERVER_CLIENT_NEW: 
client=0x556fbcf8da50 sock=0x556fbcf8d770
2020-07-14 16:29:58.220+0000: 5352: info : virObjectRef:385 : 
OBJECT_REF: obj=0x556fbcf8da50
2020-07-14 16:29:58.220+0000: 5352: info : virObjectRef:385 : 
OBJECT_REF: obj=0x556fbcf8d770
2020-07-14 16:29:58.220+0000: 5352: info : virEventGLibHandleAdd:160 : 
EVENT_GLIB_ADD_HANDLE: watch=11 fd=18 events=1 cb=0x7f7b55b86c50 
opaque=0x556fbcf8d770 ff=0x7f7b55b86c00
2020-07-14 16:29:58.220+0000: 5352: info : virObjectRef:385 : 
OBJECT_REF: obj=0x556fbcf8da50
2020-07-14 16:29:58.220+0000: 5352: info : virNetServerCheckLimits:280 
: Re-enabling services
2020-07-14 16:29:58.220+0000: 5352: info : virEventGLibHandleUpdate:194 
: EVENT_GLIB_UPDATE_HANDLE: watch=2 events=1
2020-07-14 16:29:58.220+0000: 5352: info : virObjectNew:250 : 
OBJECT_NEW: obj=0x556fbcf8e330 classname=virKeepAlive
2020-07-14 16:29:58.220+0000: 5352: info : virKeepAliveNew:208 : 
RPC_KEEPALIVE_NEW: ka=0x556fbcf8e330 client=0x556fbcf8da50
2020-07-14 16:29:58.220+0000: 5352: info : virObjectRef:385 : 
OBJECT_REF: obj=0x556fbcf8da50
2020-07-14 16:29:58.220+0000: 5352: info : virObjectUnref:347 : 
OBJECT_UNREF: obj=0x556fbcf8da50
2020-07-14 16:29:58.220+0000: 5352: info : virObjectUnref:347 : 
OBJECT_UNREF: obj=0x556fbcf8d770
2020-07-14 16:29:58.220+0000: 5352: info : 
virEventGLibHandleDispatch:116 : EVENT_GLIB_DISPATCH_HANDLE: watch=11 
events=1 cb=0x7f7b55b86c50 opaque=0x556fbcf8d770
2020-07-14 16:29:58.220+0000: 5352: error : 
virNetMessageDecodeLength:131 : Unable to decode message length
2020-07-14 16:29:58.220+0000: 5352: info : virKeepAliveStop:300 : 
RPC_KEEPALIVE_STOP: ka=0x556fbcf8e330 client=0x556fbcf8da50
2020-07-14 16:29:58.221+0000: 5352: info : virObjectRef:385 : 
OBJECT_REF: obj=0x556fbcf8da50
2020-07-14 16:29:58.221+0000: 5352: info : virObjectUnref:347 : 
OBJECT_UNREF: obj=0x556fbcf8e330
2020-07-14 16:29:58.221+0000: 5352: info : virObjectUnref:349 : 
OBJECT_DISPOSE: obj=0x556fbcf8e330
2020-07-14 16:29:58.221+0000: 5352: info : virKeepAliveDispose:221 : 
RPC_KEEPALIVE_DISPOSE: ka=0x556fbcf8e330
2020-07-14 16:29:58.221+0000: 5352: info : virObjectUnref:347 : 
OBJECT_UNREF: obj=0x556fbcf8da50
2020-07-14 16:29:58.221+0000: 5352: info : virObjectUnref:347 : 
OBJECT_UNREF: obj=0x556fbcf8da50
2020-07-14 16:29:58.221+0000: 5352: info : virObjectRef:385 : 
OBJECT_REF: obj=0x556fbcf8da50
2020-07-14 16:29:58.221+0000: 5352: info : virObjectUnref:347 : 
OBJECT_UNREF: obj=0x556fbcf8da50
2020-07-14 16:29:58.221+0000: 5352: info : virEventGLibHandleRemove:261 
: EVENT_GLIB_REMOVE_HANDLE: watch=11
2020-07-14 16:29:58.221+0000: 5352: info : virObjectUnref:347 : 
OBJECT_UNREF: obj=0x556fbcf8d770
2020-07-14 16:29:58.221+0000: 5352: info : virNetServerCheckLimits:280 
: Re-enabling services
2020-07-14 16:29:58.221+0000: 5352: info : virEventGLibHandleUpdate:194 
: EVENT_GLIB_UPDATE_HANDLE: watch=2 events=1
2020-07-14 16:29:58.221+0000: 5352: info : virObjectUnref:347 : 
OBJECT_UNREF: obj=0x556fbcf8da50
2020-07-14 16:29:58.221+0000: 5352: info : 
virEventGLibHandleRemoveIdle:242 : EVENT_GLIB_REMOVE_HANDLE_IDLE: 
watch=11 ff=0x7f7b55b86c00 opaque=0x556fbcf8d770
2020-07-14 16:29:58.221+0000: 5352: info : virObjectUnref:347 : 
OBJECT_UNREF: obj=0x556fbcf8da50
2020-07-14 16:29:58.221+0000: 5352: info : virObjectUnref:349 : 
OBJECT_DISPOSE: obj=0x556fbcf8da50
2020-07-14 16:29:58.221+0000: 5352: info : 
virNetServerClientDispose:976 : RPC_SERVER_CLIENT_DISPOSE: 
client=0x556fbcf8da50
2020-07-14 16:29:58.221+0000: 5352: info : 
virEventGLibTimeoutRemove:437 : EVENT_GLIB_REMOVE_TIMEOUT: timer=1
2020-07-14 16:29:58.221+0000: 5352: info : virObjectUnref:347 : 
OBJECT_UNREF: obj=0x556fbcf8d770
2020-07-14 16:29:58.221+0000: 5352: info : virObjectUnref:349 : 
OBJECT_DISPOSE: obj=0x556fbcf8d770
2020-07-14 16:29:58.221+0000: 5352: info : virNetSocketDispose:1332 : 
RPC_SOCKET_DISPOSE: sock=0x556fbcf8d770
2020-07-14 16:29:58.221+0000: 5352: info : 
virEventGLibTimeoutRemoveIdle:417 : EVENT_GLIB_REMOVE_TIMEOUT_IDLE: 
timer=1 ff=(nil) opaque=0x556fbcf8da50


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