auth/auth_util.c:make_server_info_sam(840)
User nobody in passdb, but getpwnam() fails!
I never found the solution to this in the web, as usual so Ithought I'd post the fix. In plain English smbd is telling us that the user "nobody" does not exist in /etc/passwd.
You can simply add this to your /etc/passwd file like so:
nobody:x:65534:65534:nobody:/nonexistent:/sbin/nologin
Now SAMBA/smbd should........