[Samba] Odd and repeating "error" being logged

[Karl Denninger]

Context: FreeBSD 12.2-STABLE, Samba 4.13.8

Samba is running as a Workgroup server and running perfectly well -- but 
in the system log I keep getting this sort of error every 5 minutes on 
the button:

Jun  1 14:47:44 NewFS winbindd[64462]: [2021/06/01 14:47:44.823191,  0] 
../../source3/rpc_server/rpc_ncacn_np.c:456(rpcint_dispatch)
Jun  1 14:47:44 NewFS winbindd[64462]:   rpcint_dispatch: DCE/RPC fault 
in call lsarpc:32 - DCERPC_NCA_S_OP_RNG_ERROR
Jun  1 14:47:44 NewFS winbindd[64462]: [2021/06/01 14:47:44.823963,  0] 
../../source3/rpc_server/rpc_ncacn_np.c:456(rpcint_dispatch)
Jun  1 14:47:44 NewFS winbindd[64462]:   rpcint_dispatch: DCE/RPC fault 
in call lsarpc:32 - DCERPC_NCA_S_OP_RNG_ERROR
Jun  1 14:52:44 NewFS winbindd[64462]: [2021/06/01 14:52:44.851005,  0] 
../../source3/rpc_server/rpc_ncacn_np.c:456(rpcint_dispatch)
Jun  1 14:52:44 NewFS winbindd[64462]:   rpcint_dispatch: DCE/RPC fault 
in call lsarpc:32 - DCERPC_NCA_S_OP_RNG_ERROR
Jun  1 14:52:44 NewFS winbindd[64462]: [2021/06/01 14:52:44.851713,  0] 
../../source3/rpc_server/rpc_ncacn_np.c:456(rpcint_dispatch)
Jun  1 14:52:44 NewFS winbindd[64462]:   rpcint_dispatch: DCE/RPC fault 
in call lsarpc:32 - DCERPC_NCA_S_OP_RNG_ERROR

Googling around has not helped with finding the cause.... This is an 
"isolated" machine in that it does not have an LDAP server or other 
Windows Domain Controller on the network it is attached to; user 
authentication is done via local smbpasswd.  Basically, a very simple 
local setup that provides file and printer service for a handful of 
Windows 10 machines.  It is running perfectly well without problems; the 
client machines have no issues with connectivity or file service.

 From the error I would surmise that it's upset about a cryptographic 
seed in some form, but where and why I don't know.

Any idea what's going on here?

-- 
Karl Denninger
karl at denninger.net <mailto:karl at denninger.net>
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