[Samba] Samba Process stops while trying to print to a CUPS

[Sammy Ellis]

I have a Linux RHEL 7.8 server that has been having issues with CUPS
printing with Samba.

A few notes:

   - Samba Version 4.10
   - CUPS Version 1.6.3
   - Windows Connecting Client - Windows Server 2016
   - I do see the print job making it to the configured path in the
   smb.conf file
   - I am able to manually print to the CUPs printer
   - Therefore I know Samba is working, and CUPs are working
   - When I tail the log.smbd file it seems to stop at the same please
   every time.
   - To me, the behavior seems like Samba is having an issue with the CUPS
   API it was built against.


Any advice one what to look for next?  I'm real close to just building
another server.

*Samba Config (redacted)*
[global]
        workgroup = WORKGROUP
        server string = MyCompany Server 8.3 RH7
        netbios name = MyCompany
        hosts allow = .
        server min protocol = SMB2_10
        client min protocol = SMB2
        client max protocol = SMB3
        log file = /var/log/samba/log.%m
        max log size = 50
        dns proxy = no
        log level = 5
        security = user
        passdb backend = tdbsam
        map to guest = bad user

       guest account = MyGuestAccount

        printing = CUPS
        printcap name = cups
        load printers = yes
        cups options = raw

# Samba Configuration file

[printers]
        comment           = All Printers
        path              = /var/spool/samba
        browseable        = yes
        guest ok          = yes
        writeable         = no
        public            = yes
        print command = lp -d %p -s %s

*Log.smbd File (printing to vch2)*
[2020/09/25 09:20:31.513309,  5]
../../source3/printing/printing.c:1587(print_queue_update_with_lock)
  print_queue_update_with_lock: printer share = vch2
[2020/09/25 09:20:31.513384,  4]
../../source3/printing/printing.c:1373(print_cache_expired)
  print_cache_expired: cache expired for queue vch2 (last_qscan_time =
1601046985, time now = 1601047231, qcachetime = 30)
[2020/09/25 09:20:31.513416,  5]
../../source3/printing/printing.c:1205(set_updating_pid)
  set_updating_pid: updating lpq cache for print share vch2
[2020/09/25 09:20:31.513448,  5]
../../source3/printing/printing.c:1428(print_queue_update_internal)
  print_queue_update_internal: printer = vch2, type = 8, lpq command =
[vch2]
[2020/09/25 09:20:31.513467,  5]
../../source3/printing/print_cups.c:1180(cups_queue_get)
  cups_queue_get(vch2, 0x7fff8bb069b8, 0x7fff8bb06a20)
[2020/09/25 09:20:31.514957,  3]
../../source3/printing/printing.c:1449(print_queue_update_internal)
  print_queue_update_internal: 0 jobs in queue for vch2
[2020/09/25 09:20:31.515333,  5]
../../source3/printing/printing.c:1205(set_updating_pid)
  set_updating_pid: not updating lpq cache for print share vch2