[Samba] get_ea_dos_attribute: Cannot get attribute from EA on file .: Error = No data available

[Lorenzo Milesi]

Samba 4.12.1, single server with AD+DC on Ubuntu 18.04. Filesystem:
/dev/sdb1 on /home type ext4 (rw,relatime,stripe=32750,data=ordered)

It all work as expected, but I occasionally get the error in subject which denies access to shares. Restarting Samba will restore functionality. 
What can be the cause of this problem?
Thanks.

[2020/05/27 18:24:35.795379,  8] ../../source3/smbd/smb2_query_directory.c:493(smbd_smb2_query_directory_send)
  smbd_smb2_query_directory_send: dirpath=<2017 PAE/2 secondo-terzo trimestre 2017 inviati/2 Asdrubale 2/Tizio Caio> dontdescend=<>, in_output_buffer_length = 65528
[2020/05/27 18:24:35.795404,  6] ../../source3/smbd/dir.c:820(smbd_dirptr_get_entry)
  smbd_dirptr_get_entry: dirptr 0x55f3ceabc250 now at offset 0
[2020/05/27 18:24:35.795423,  8] ../../source3/smbd/dosmode.c:779(dos_mode)
  dos_mode: 2017 PAE/2 secondo-terzo trimestre 2017 inviati/2 Asdrubale 2/Tizio Caio/.
[2020/05/27 18:24:35.795439,  5] ../../source3/smbd/dosmode.c:449(get_ea_dos_attribute)
  get_ea_dos_attribute: Cannot get attribute from EA on file 2017 PAE/2 secondo-terzo trimestre 2017 inviati/2 Asdrubale 2/Tizio Caio/.: Error = No data available
[2020/05/27 18:24:35.795455,  5] ../../source3/smbd/dosmode.c:72(dos_mode_debug_print)
  dos_mode_debug_print: dos_mode returning (0x10): "d"

-- 
Lorenzo Milesi - lorenzo.milesi at yetopen.it

YetOpen S.r.l. - https://www.yetopen.it/
Via Salerno 18 - 23900 Lecco - ITALY -
Tel +39 0341 220 205 - Fax +39 178 6070 222

Think green - Non stampare questa e-mail se non necessario / Don't print this email unless necessary

-------- D.Lgs. 196/2003 e GDPR 679/2016 --------
Tutte le informazioni contenute in questo messaggio sono riservate ed a uso esclusivo del destinatario.
Tutte le informazioni ivi contenute, compresi eventuali allegati, sono da ritenere confidenziali e riservate secondo i termini
del vigente D.Lgs. 196/2003 in materia di privacy e del Regolamento europeo 679/2016 - GDPR - e quindi ne e' proibita l'utilizzazione ulteriore non autorizzata.
Nel caso in cui questo messaggio Le fosse pervenuto per errore, La invitiamo ad eliminarlo senza copiarlo, stamparlo, a non inoltrarlo a terzi e ad avvertirci non appena possibile.
Grazie.

Confidentiality notice: this email message including any attachment is for the sole use of the intended recipient and may contain confidential and privileged information;
pursuant to Legislative Decree 196/2003 and the European General Data Protection Regulation 679/2016 - GDPR - any unauthorized review, use, disclosure or distribution
is prohibited. If you are not the intended recepient please delete this message without copying, printing or forwarding it to others, and alert us as soon as possible.
Thank you.